diff options
Diffstat (limited to 'libX11/src/XlibInt.c')
| -rw-r--r-- | libX11/src/XlibInt.c | 7352 |
1 files changed, 3680 insertions, 3672 deletions
diff --git a/libX11/src/XlibInt.c b/libX11/src/XlibInt.c index fb6e71525..ce62ae36d 100644 --- a/libX11/src/XlibInt.c +++ b/libX11/src/XlibInt.c @@ -1,3672 +1,3680 @@ -/* - -Copyright 1985, 1986, 1987, 1998 The Open Group - -Permission to use, copy, modify, distribute, and sell this software and its -documentation for any purpose is hereby granted without fee, provided that -the above copyright notice appear in all copies and that both that -copyright notice and this permission notice appear in supporting -documentation. - -The above copyright notice and this permission notice shall be included -in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR -OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, -ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR -OTHER DEALINGS IN THE SOFTWARE. - -Except as contained in this notice, the name of The Open Group shall -not be used in advertising or otherwise to promote the sale, use or -other dealings in this Software without prior written authorization -from The Open Group. - -*/ - -/* - * XlibInt.c - Internal support routines for the C subroutine - * interface library (Xlib) to the X Window System Protocol V11.0. - */ -#define NEED_EVENTS -#define NEED_REPLIES - -#ifdef WIN32 -#define _XLIBINT_ -#endif -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "Xlibint.h" -#include "Xprivate.h" -#include <X11/Xpoll.h> -#if !USE_XCB -#include <X11/Xtrans/Xtrans.h> -#include <X11/extensions/xcmiscstr.h> -#endif /* !USE_XCB */ -#include <assert.h> -#include <stdio.h> -#ifdef WIN32 -#include <direct.h> -#endif - -#ifdef XTHREADS -#include "locking.h" - -/* these pointers get initialized by XInitThreads */ -LockInfoPtr _Xglobal_lock = NULL; -void (*_XCreateMutex_fn)(LockInfoPtr) = NULL; -/* struct _XCVList *(*_XCreateCVL_fn)() = NULL; */ -void (*_XFreeMutex_fn)(LockInfoPtr) = NULL; -void (*_XLockMutex_fn)( - LockInfoPtr /* lock */ -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) - , char * /* file */ - , int /* line */ -#endif - ) = NULL; -void (*_XUnlockMutex_fn)( - LockInfoPtr /* lock */ -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) - , char * /* file */ - , int /* line */ -#endif - ) = NULL; -xthread_t (*_Xthread_self_fn)(void) = NULL; - -#define XThread_Self() ((*_Xthread_self_fn)()) - -#if !USE_XCB -#define UnlockNextReplyReader(d) if ((d)->lock) \ - (*(d)->lock->pop_reader)((d),&(d)->lock->reply_awaiters,&(d)->lock->reply_awaiters_tail) - -#define QueueReplyReaderLock(d) ((d)->lock ? \ - (*(d)->lock->push_reader)(d,&(d)->lock->reply_awaiters_tail) : NULL) -#define QueueEventReaderLock(d) ((d)->lock ? \ - (*(d)->lock->push_reader)(d,&(d)->lock->event_awaiters_tail) : NULL) - -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) -#define InternalLockDisplay(d,wskip) if ((d)->lock) \ - (*(d)->lock->internal_lock_display)(d,wskip,__FILE__,__LINE__) -#else -#define InternalLockDisplay(d,wskip) if ((d)->lock) \ - (*(d)->lock->internal_lock_display)(d,wskip) -#endif -#endif /* !USE_XCB */ - -#else /* XTHREADS else */ - -#if !USE_XCB -#define UnlockNextReplyReader(d) -#define UnlockNextEventReader(d) -#define InternalLockDisplay(d,wskip) -#endif /* !USE_XCB */ - -#endif /* XTHREADS else */ - -/* check for both EAGAIN and EWOULDBLOCK, because some supposedly POSIX - * systems are broken and return EWOULDBLOCK when they should return EAGAIN - */ -#ifdef WIN32 -#define ETEST() (WSAGetLastError() == WSAEWOULDBLOCK) -#else -#ifdef __CYGWIN__ /* Cygwin uses ENOBUFS to signal socket is full */ -#define ETEST() (errno == EAGAIN || errno == EWOULDBLOCK || errno == ENOBUFS) -#else -#if defined(EAGAIN) && defined(EWOULDBLOCK) -#define ETEST() (errno == EAGAIN || errno == EWOULDBLOCK) -#else -#ifdef EAGAIN -#define ETEST() (errno == EAGAIN) -#else -#define ETEST() (errno == EWOULDBLOCK) -#endif /* EAGAIN */ -#endif /* EAGAIN && EWOULDBLOCK */ -#endif /* __CYGWIN__ */ -#endif /* WIN32 */ - -#ifdef WIN32 -#define ECHECK(err) (WSAGetLastError() == err) -#define ESET(val) WSASetLastError(val) -#else -#ifdef __UNIXOS2__ -#define ECHECK(err) (errno == err) -#define ESET(val) -#else -#define ECHECK(err) (errno == err) -#define ESET(val) errno = val -#endif -#endif - -#if defined(LOCALCONN) || defined(LACHMAN) -#ifdef EMSGSIZE -#define ESZTEST() (ECHECK(EMSGSIZE) || ECHECK(ERANGE)) -#else -#define ESZTEST() ECHECK(ERANGE) -#endif -#else -#ifdef EMSGSIZE -#define ESZTEST() ECHECK(EMSGSIZE) -#endif -#endif - -#ifdef __UNIXOS2__ -#if !USE_XCB -#define select(n,r,w,x,t) os2ClientSelect(n,r,w,x,t) -#endif /* !USE_XCB */ -#include <limits.h> -#define MAX_PATH _POSIX_PATH_MAX -#endif - -#if !USE_XCB -#ifdef MUSTCOPY - -#define STARTITERATE(tpvar,type,start,endcond) \ - { register char *cpvar; \ - for (cpvar = (char *) (start); endcond; ) { \ - type dummy; memcpy ((char *) &dummy, cpvar, SIZEOF(type)); \ - tpvar = &dummy; -#define ITERPTR(tpvar) cpvar -#define RESETITERPTR(tpvar,type,start) cpvar = start -#define INCITERPTR(tpvar,type) cpvar += SIZEOF(type) -#define ENDITERATE }} - -#else - -#define STARTITERATE(tpvar,type,start,endcond) \ - for (tpvar = (type *) (start); endcond; ) -#define ITERPTR(tpvar) (char *)tpvar -#define RESETITERPTR(tpvar,type,start) tpvar = (type *) (start) -#define INCITERPTR(tpvar,type) tpvar++ -#define ENDITERATE - -#endif /* MUSTCOPY */ - -typedef union { - xReply rep; - char buf[BUFSIZE]; -} _XAlignedBuffer; - -static char *_XAsyncReply( - Display *dpy, - register xReply *rep, - char *buf, - register int *lenp, - Bool discard); -#endif /* !USE_XCB */ - -/* - * The following routines are internal routines used by Xlib for protocol - * packet transmission and reception. - * - * _XIOError(Display *) will be called if any sort of system call error occurs. - * This is assumed to be a fatal condition, i.e., XIOError should not return. - * - * _XError(Display *, xError *) will be called whenever an X_Error event is - * received. This is not assumed to be a fatal condition, i.e., it is - * acceptable for this procedure to return. However, XError should NOT - * perform any operations (directly or indirectly) on the DISPLAY. - * - * Routines declared with a return type of 'Status' return 0 on failure, - * and non 0 on success. Routines with no declared return type don't - * return anything. Whenever possible routines that create objects return - * the object they have created. - */ - -#if !USE_XCB -static xReq _dummy_request = { - 0, 0, 0 -}; - -/* - * This is an OS dependent routine which: - * 1) returns as soon as the connection can be written on.... - * 2) if the connection can be read, must enqueue events and handle errors, - * until the connection is writable. - */ -static void -_XWaitForWritable( - Display *dpy -#ifdef XTHREADS - , - xcondition_t cv /* our reading condition variable */ -#endif - ) -{ -#ifdef USE_POLL - struct pollfd filedes; -#else - fd_set r_mask; - fd_set w_mask; -#endif - int nfound; - -#ifdef USE_POLL - filedes.fd = dpy->fd; - filedes.events = 0; -#else - FD_ZERO(&r_mask); - FD_ZERO(&w_mask); -#endif - - for (;;) { -#ifdef XTHREADS - /* We allow only one thread at a time to read, to minimize - passing of read data between threads. - Now, who is it? If there is a non-NULL reply_awaiters and - we (i.e., our cv) are not at the head of it, then whoever - is at the head is the reader, and we don't read. - Otherwise there is no reply_awaiters or we are at the - head, having just appended ourselves. - In this case, if there is a event_awaiters, then whoever - is at the head of it got there before we did, and they are the - reader. - - Last cases: no event_awaiters and we are at the head of - reply_awaiters or reply_awaiters is NULL: we are the reader, - since there is obviously no one else involved. - - XXX - what if cv is NULL and someone else comes along after - us while we are waiting? - */ - - if (!dpy->lock || - (!dpy->lock->event_awaiters && - (!dpy->lock->reply_awaiters || - dpy->lock->reply_awaiters->cv == cv))) -#endif -#ifdef USE_POLL - filedes.events = POLLIN; - filedes.events |= POLLOUT; -#else - FD_SET(dpy->fd, &r_mask); - FD_SET(dpy->fd, &w_mask); -#endif - - do { - UnlockDisplay(dpy); -#ifdef USE_POLL - nfound = poll (&filedes, 1, -1); -#else - nfound = Select (dpy->fd + 1, &r_mask, &w_mask, NULL, NULL); -#endif - InternalLockDisplay(dpy, cv != NULL); - if (nfound < 0 && !(ECHECK(EINTR) || ETEST())) - _XIOError(dpy); - } while (nfound <= 0); - - if ( -#ifdef USE_POLL - filedes.revents & POLLIN -#else - FD_ISSET(dpy->fd, &r_mask) -#endif - ) - { - _XAlignedBuffer buf; - BytesReadable_t pend; - register int len; - register xReply *rep; - - /* find out how much data can be read */ - if (_X11TransBytesReadable(dpy->trans_conn, &pend) < 0) - _XIOError(dpy); - len = pend; - - /* must read at least one xEvent; if none is pending, then - we'll just block waiting for it */ - if (len < SIZEOF(xReply) -#ifdef XTHREADS - || dpy->async_handlers -#endif - ) - len = SIZEOF(xReply); - - /* but we won't read more than the max buffer size */ - if (len > BUFSIZE) len = BUFSIZE; - - /* round down to an integral number of XReps */ - len = (len / SIZEOF(xReply)) * SIZEOF(xReply); - - (void) _XRead (dpy, buf.buf, (long) len); - - STARTITERATE(rep,xReply,buf.buf,len > 0) { - if (rep->generic.type == X_Reply) { - int tmp = len; - RESETITERPTR(rep,xReply, - _XAsyncReply (dpy, rep, - ITERPTR(rep), &tmp, True)); - len = tmp; - pend = len; - } else { - if (rep->generic.type == X_Error) - _XError (dpy, (xError *)rep); - else /* must be an event packet */ - _XEnq (dpy, (xEvent *)rep); - INCITERPTR(rep,xReply); - len -= SIZEOF(xReply); - } - } ENDITERATE -#ifdef XTHREADS - if (dpy->lock && dpy->lock->event_awaiters) - ConditionSignal(dpy, dpy->lock->event_awaiters->cv); -#endif - } -#ifdef USE_POLL - if (filedes.revents & (POLLOUT|POLLHUP|POLLERR)) -#else - if (FD_ISSET(dpy->fd, &w_mask)) -#endif - { -#ifdef XTHREADS - if (dpy->lock) { - ConditionBroadcast(dpy, dpy->lock->writers); - } -#endif - return; - } - } -} -#endif /* !USE_XCB */ - - -#define POLLFD_CACHE_SIZE 5 - -/* initialize the struct array passed to poll() below */ -Bool _XPollfdCacheInit( - Display *dpy) -{ -#ifdef USE_POLL - struct pollfd *pfp; - - pfp = (struct pollfd *)Xmalloc(POLLFD_CACHE_SIZE * sizeof(struct pollfd)); - if (!pfp) - return False; - pfp[0].fd = dpy->fd; - pfp[0].events = POLLIN; - - dpy->filedes = (XPointer)pfp; -#endif - return True; -} - -void _XPollfdCacheAdd( - Display *dpy, - int fd) -{ -#ifdef USE_POLL - struct pollfd *pfp = (struct pollfd *)dpy->filedes; - - if (dpy->im_fd_length <= POLLFD_CACHE_SIZE) { - pfp[dpy->im_fd_length].fd = fd; - pfp[dpy->im_fd_length].events = POLLIN; - } -#endif -} - -/* ARGSUSED */ -void _XPollfdCacheDel( - Display *dpy, - int fd) /* not used */ -{ -#ifdef USE_POLL - struct pollfd *pfp = (struct pollfd *)dpy->filedes; - struct _XConnectionInfo *conni; - - /* just recalculate whole list */ - if (dpy->im_fd_length <= POLLFD_CACHE_SIZE) { - int loc = 1; - for (conni = dpy->im_fd_info; conni; conni=conni->next) { - pfp[loc].fd = conni->fd; - pfp[loc].events = POLLIN; - loc++; - } - } -#endif -} - -#if !USE_XCB -/* returns True iff there is an event in the queue newer than serial_num */ - -static Bool -_XNewerQueuedEvent( - Display *dpy, - int serial_num) -{ - _XQEvent *qev; - - if (dpy->next_event_serial_num == serial_num) - return False; - - qev = dpy->head; - while (qev) { - if (qev->qserial_num >= serial_num) { - return True; - } - qev = qev->next; - } - return False; -} - -static int -_XWaitForReadable( - Display *dpy) -{ - int result; - int fd = dpy->fd; - struct _XConnectionInfo *ilist; - register int saved_event_serial = 0; - int in_read_events = 0; - register Bool did_proc_conni = False; -#ifdef USE_POLL - struct pollfd *filedes; -#else - fd_set r_mask; - int highest_fd = fd; -#endif - -#ifdef USE_POLL - if (dpy->im_fd_length + 1 > POLLFD_CACHE_SIZE - && !(dpy->flags & XlibDisplayProcConni)) { - /* XXX - this fallback is gross */ - int i; - - filedes = (struct pollfd *)Xmalloc(dpy->im_fd_length * sizeof(struct pollfd)); - filedes[0].fd = fd; - filedes[0].events = POLLIN; - for (ilist=dpy->im_fd_info, i=1; ilist; ilist=ilist->next, i++) { - filedes[i].fd = ilist->fd; - filedes[i].events = POLLIN; - } - } else { - filedes = (struct pollfd *)dpy->filedes; - } -#else - FD_ZERO(&r_mask); -#endif - for (;;) { -#ifndef USE_POLL - FD_SET(fd, &r_mask); - if (!(dpy->flags & XlibDisplayProcConni)) - for (ilist=dpy->im_fd_info; ilist; ilist=ilist->next) { - FD_SET(ilist->fd, &r_mask); - if (ilist->fd > highest_fd) - highest_fd = ilist->fd; - } -#endif - UnlockDisplay(dpy); -#ifdef USE_POLL - result = poll(filedes, - (dpy->flags & XlibDisplayProcConni) ? 1 : 1+dpy->im_fd_length, - -1); -#else - result = Select(highest_fd + 1, &r_mask, NULL, NULL, NULL); -#endif - InternalLockDisplay(dpy, dpy->flags & XlibDisplayReply); - if (result == -1 && !(ECHECK(EINTR) || ETEST())) _XIOError(dpy); - if (result <= 0) - continue; -#ifdef USE_POLL - if (filedes[0].revents & (POLLIN|POLLHUP|POLLERR)) -#else - if (FD_ISSET(fd, &r_mask)) -#endif - break; - if (!(dpy->flags & XlibDisplayProcConni)) { - int i; - - saved_event_serial = dpy->next_event_serial_num; - /* dpy flags can be clobbered by internal connection callback */ - in_read_events = dpy->flags & XlibDisplayReadEvents; - for (ilist=dpy->im_fd_info, i=1; ilist; ilist=ilist->next, i++) { -#ifdef USE_POLL - if (filedes[i].revents & POLLIN) -#else - if (FD_ISSET(ilist->fd, &r_mask)) -#endif - { - _XProcessInternalConnection(dpy, ilist); - did_proc_conni = True; - } - } -#ifdef USE_POLL - if (dpy->im_fd_length + 1 > POLLFD_CACHE_SIZE) - Xfree(filedes); -#endif - } - if (did_proc_conni) { - /* some internal connection callback might have done an - XPutBackEvent. We notice it here and if we needed an event, - we can return all the way. */ - if (_XNewerQueuedEvent(dpy, saved_event_serial) - && (in_read_events -#ifdef XTHREADS - || (dpy->lock && dpy->lock->event_awaiters) -#endif - )) - return -2; - did_proc_conni = False; - } - } -#ifdef XTHREADS -#ifdef XTHREADS_DEBUG - printf("thread %x _XWaitForReadable returning\n", XThread_Self()); -#endif -#endif - return 0; -} -#endif /* !USE_XCB */ - -static int sync_hazard(Display *dpy) -{ - unsigned long span = dpy->request - dpy->last_request_read; - unsigned long hazard = min((dpy->bufmax - dpy->buffer) / SIZEOF(xReq), 65535 - 10); - return span >= 65535 - hazard - 10; -} - -static -int _XSeqSyncFunction( - register Display *dpy) -{ - xGetInputFocusReply rep; - register xReq *req; - int sent_sync = 0; - - LockDisplay(dpy); - if ((dpy->request - dpy->last_request_read) >= (65535 - BUFSIZE/SIZEOF(xReq))) { - GetEmptyReq(GetInputFocus, req); - (void) _XReply (dpy, (xReply *)&rep, 0, xTrue); - sent_sync = 1; - } else if (sync_hazard(dpy)) - _XSetPrivSyncFunction(dpy); - UnlockDisplay(dpy); - if (sent_sync) - SyncHandle(); - return 0; -} - -static int -_XPrivSyncFunction (Display *dpy) -{ - assert(dpy->synchandler == _XPrivSyncFunction); - assert((dpy->flags & XlibDisplayPrivSync) != 0); - dpy->synchandler = dpy->savedsynchandler; - dpy->savedsynchandler = NULL; - dpy->flags &= ~XlibDisplayPrivSync; - _XIDHandler(dpy); - _XSeqSyncFunction(dpy); - return 0; -} - -void _XSetPrivSyncFunction(Display *dpy) -{ - if (!(dpy->flags & XlibDisplayPrivSync)) { - dpy->savedsynchandler = dpy->synchandler; - dpy->synchandler = _XPrivSyncFunction; - dpy->flags |= XlibDisplayPrivSync; - } -} - -void _XSetSeqSyncFunction(Display *dpy) -{ - if (sync_hazard(dpy)) - _XSetPrivSyncFunction (dpy); -} - -#if !USE_XCB -#ifdef XTHREADS -static void _XFlushInt( - register Display *dpy, - register xcondition_t cv); -#endif - -/* - * _XFlush - Flush the X request buffer. If the buffer is empty, no - * action is taken. This routine correctly handles incremental writes. - * This routine may have to be reworked if int < long. - */ -void _XFlush( - register Display *dpy) -{ -#ifdef XTHREADS - /* With multi-threading we introduce an internal routine to which - we can pass a condition variable to do locking correctly. */ - - _XFlushInt(dpy, NULL); -} - -/* _XFlushInt - Internal version of _XFlush used to do multi-threaded - * locking correctly. - */ - -static void _XFlushInt( - register Display *dpy, - register xcondition_t cv) -{ -#endif /* XTHREADS*/ - register long size, todo; - register int write_stat; - register char *bufindex; - _XExtension *ext; - - /* This fix resets the bufptr to the front of the buffer so - * additional appends to the bufptr will not corrupt memory. Since - * the server is down, these appends are no-op's anyway but - * callers of _XFlush() are not verifying this before they call it. - */ - if (dpy->flags & XlibDisplayIOError) - { - dpy->bufptr = dpy->buffer; - dpy->last_req = (char *)&_dummy_request; - return; - } - -#ifdef XTHREADS - while (dpy->flags & XlibDisplayWriting) { - if (dpy->lock) { - ConditionWait(dpy, dpy->lock->writers); - } else { - _XWaitForWritable (dpy, cv); - } - } -#endif - size = todo = dpy->bufptr - dpy->buffer; - if (!size) return; -#ifdef XTHREADS - dpy->flags |= XlibDisplayWriting; - /* make sure no one else can put in data */ - dpy->bufptr = dpy->bufmax; -#endif - for (ext = dpy->flushes; ext; ext = ext->next_flush) - (*ext->before_flush)(dpy, &ext->codes, dpy->buffer, size); - bufindex = dpy->buffer; - /* - * While write has not written the entire buffer, keep looping - * until the entire buffer is written. bufindex will be - * incremented and size decremented as buffer is written out. - */ - while (size) { - ESET(0); - write_stat = _X11TransWrite(dpy->trans_conn, - bufindex, (int) todo); - if (write_stat >= 0) { - size -= write_stat; - todo = size; - bufindex += write_stat; - } else if (ETEST()) { - _XWaitForWritable(dpy -#ifdef XTHREADS - , cv -#endif - ); -#ifdef SUNSYSV - } else if (ECHECK(0)) { - _XWaitForWritable(dpy -#ifdef XTHREADS - , cv -#endif - ); -#endif -#ifdef ESZTEST - } else if (ESZTEST()) { - if (todo > 1) - todo >>= 1; - else { - _XWaitForWritable(dpy -#ifdef XTHREADS - , cv -#endif - ); - } -#endif - } else if (!ECHECK(EINTR)) { - /* Write failed! */ - /* errno set by write system call. */ - _XIOError(dpy); - } - } - dpy->last_req = (char *)&_dummy_request; - _XSetSeqSyncFunction(dpy); - dpy->bufptr = dpy->buffer; -#ifdef XTHREADS - dpy->flags &= ~XlibDisplayWriting; -#endif -} - -int -_XEventsQueued( - register Display *dpy, - int mode) -{ - register int len; - BytesReadable_t pend; - _XAlignedBuffer buf; - register xReply *rep; - char *read_buf; -#ifdef XTHREADS - int entry_event_serial_num; - struct _XCVList *cvl = NULL; - xthread_t self; - -#ifdef XTHREADS_DEBUG - printf("_XEventsQueued called in thread %x\n", XThread_Self()); -#endif -#endif /* XTHREADS*/ - - if (mode == QueuedAfterFlush) - { - _XFlush(dpy); - if (dpy->qlen) - return(dpy->qlen); - } - if (dpy->flags & XlibDisplayIOError) return(dpy->qlen); - -#ifdef XTHREADS - /* create our condition variable and append to list, - * unless we were called from within XProcessInternalConnection - * or XLockDisplay - */ - xthread_clear_id(self); - if (dpy->lock && (xthread_have_id (dpy->lock->conni_thread) - || xthread_have_id (dpy->lock->locking_thread))) - /* some thread is in XProcessInternalConnection or XLockDisplay - so we have to see if we are it */ - self = XThread_Self(); - if (!xthread_have_id(self) - || (!xthread_equal(self, dpy->lock->conni_thread) - && !xthread_equal(self, dpy->lock->locking_thread))) { - /* In the multi-threaded case, if there is someone else - reading events, then there aren't any available, so - we just return. If we waited we would block. - */ - if (dpy->lock && dpy->lock->event_awaiters) - return dpy->qlen; - /* nobody here but us, so lock out any newcomers */ - cvl = QueueEventReaderLock(dpy); - } - - while (dpy->lock && cvl && dpy->lock->reply_first) { - /* note which events we have already seen so we'll know - if _XReply (in another thread) reads one */ - entry_event_serial_num = dpy->next_event_serial_num; - ConditionWait(dpy, cvl->cv); - /* did _XReply read an event we can return? */ - if (_XNewerQueuedEvent(dpy, entry_event_serial_num)) - { - UnlockNextEventReader(dpy); - return 0; - } - } -#endif /* XTHREADS*/ - - if (_X11TransBytesReadable(dpy->trans_conn, &pend) < 0) - _XIOError(dpy); -#ifdef XCONN_CHECK_FREQ - /* This is a crock, required because FIONREAD or equivalent is - * not guaranteed to detect a broken connection. - */ - if (!pend && !dpy->qlen && ++dpy->conn_checker >= XCONN_CHECK_FREQ) - { - int result; -#ifdef USE_POLL - struct pollfd filedes; -#else - fd_set r_mask; - static struct timeval zero_time; -#endif - - dpy->conn_checker = 0; -#ifdef USE_POLL - filedes.fd = dpy->fd; - filedes.events = POLLIN; - if ((result = poll(&filedes, 1, 0))) -#else - FD_ZERO(&r_mask); - FD_SET(dpy->fd, &r_mask); - if ((result = Select(dpy->fd + 1, &r_mask, NULL, NULL, &zero_time))) -#endif - { - if (result > 0) - { - if (_X11TransBytesReadable(dpy->trans_conn, &pend) < 0) - _XIOError(dpy); - /* we should not get zero, if we do, force a read */ - if (!pend) - pend = SIZEOF(xReply); - } - else if (result < 0 && !(ECHECK(EINTR) || ETEST())) - _XIOError(dpy); - } - } -#endif /* XCONN_CHECK_FREQ */ - if (!(len = pend)) { - /* _XFlush can enqueue events */ -#ifdef XTHREADS - if (cvl) -#endif - { - UnlockNextEventReader(dpy); - } - return(dpy->qlen); - } - /* Force a read if there is not enough data. Otherwise, - * a select() loop at a higher-level will spin undesirably, - * and we've seen at least one OS that appears to not update - * the result from FIONREAD once it has returned nonzero. - */ -#ifdef XTHREADS - if (dpy->lock && dpy->lock->reply_awaiters) { - read_buf = (char *)dpy->lock->reply_awaiters->buf; - len = SIZEOF(xReply); - } else -#endif /* XTHREADS*/ - { - read_buf = buf.buf; - - if (len < SIZEOF(xReply) -#ifdef XTHREADS - || dpy->async_handlers -#endif - ) - len = SIZEOF(xReply); - else if (len > BUFSIZE) - len = BUFSIZE; - len = (len / SIZEOF(xReply)) * SIZEOF(xReply); - } -#ifdef XCONN_CHECK_FREQ - dpy->conn_checker = 0; -#endif - - (void) _XRead (dpy, read_buf, (long) len); - -#ifdef XTHREADS - /* what did we actually read: reply or event? */ - if (dpy->lock && dpy->lock->reply_awaiters) { - if (((xReply *)read_buf)->generic.type == X_Reply || - ((xReply *)read_buf)->generic.type == X_Error) - { - dpy->lock->reply_was_read = True; - dpy->lock->reply_first = True; - if (read_buf != (char *)dpy->lock->reply_awaiters->buf) - memcpy(dpy->lock->reply_awaiters->buf, read_buf, - len); - if (cvl) { - UnlockNextEventReader(dpy); - } - return(dpy->qlen); /* we read, so we can return */ - } else if (read_buf != buf.buf) - memcpy(buf.buf, read_buf, len); - } -#endif /* XTHREADS*/ - - STARTITERATE(rep,xReply,buf.buf,len > 0) { - if (rep->generic.type == X_Reply) { - int tmp = len; - RESETITERPTR(rep,xReply, - _XAsyncReply (dpy, rep, - ITERPTR(rep), &tmp, True)); - len = tmp; - pend = len; - } else { - if (rep->generic.type == X_Error) - _XError (dpy, (xError *)rep); - else /* must be an event packet */ - _XEnq (dpy, (xEvent *)rep); - INCITERPTR(rep,xReply); - len -= SIZEOF(xReply); - } - } ENDITERATE - -#ifdef XTHREADS - if (cvl) -#endif - { - UnlockNextEventReader(dpy); - } - return(dpy->qlen); -} - -/* _XReadEvents - Flush the output queue, - * then read as many events as possible (but at least 1) and enqueue them - */ -void _XReadEvents( - register Display *dpy) -{ - _XAlignedBuffer buf; - BytesReadable_t pend; - int len; - register xReply *rep; - Bool not_yet_flushed = True; - char *read_buf; - int i; - int entry_event_serial_num = dpy->next_event_serial_num; -#ifdef XTHREADS - struct _XCVList *cvl = NULL; - xthread_t self; - -#ifdef XTHREADS_DEBUG - printf("_XReadEvents called in thread %x\n", - XThread_Self()); -#endif - /* create our condition variable and append to list, - * unless we were called from within XProcessInternalConnection - * or XLockDisplay - */ - xthread_clear_id(self); - if (dpy->lock && (xthread_have_id (dpy->lock->conni_thread) - || xthread_have_id (dpy->lock->locking_thread))) - /* some thread is in XProcessInternalConnection or XLockDisplay - so we have to see if we are it */ - self = XThread_Self(); - if (!xthread_have_id(self) - || (!xthread_equal(self, dpy->lock->conni_thread) - && !xthread_equal(self, dpy->lock->locking_thread))) - cvl = QueueEventReaderLock(dpy); -#endif /* XTHREADS */ - - do { -#ifdef XTHREADS - /* if it is not our turn to read an event off the wire, - wait til we're at head of list */ - if (dpy->lock && cvl && - (dpy->lock->event_awaiters != cvl || - dpy->lock->reply_first)) { - ConditionWait(dpy, cvl->cv); - continue; - } -#endif /* XTHREADS */ - /* find out how much data can be read */ - if (_X11TransBytesReadable(dpy->trans_conn, &pend) < 0) - _XIOError(dpy); - len = pend; - - /* must read at least one xEvent; if none is pending, then - we'll just flush and block waiting for it */ - if (len < SIZEOF(xEvent) -#ifdef XTHREADS - || dpy->async_handlers -#endif - ) { - len = SIZEOF(xEvent); - /* don't flush until the first time we would block */ - if (not_yet_flushed) { - _XFlush (dpy); - if (_XNewerQueuedEvent(dpy, entry_event_serial_num)) { - /* _XReply has read an event for us */ - goto got_event; - } - not_yet_flushed = False; - } - } - -#ifdef XTHREADS - /* If someone is waiting for a reply, gamble that - the reply will be the next thing on the wire - and read it into their buffer. */ - if (dpy->lock && dpy->lock->reply_awaiters) { - read_buf = (char *)dpy->lock->reply_awaiters->buf; - len = SIZEOF(xReply); - } else -#endif /* XTHREADS*/ - { - read_buf = buf.buf; - - /* but we won't read more than the max buffer size */ - if (len > BUFSIZE) - len = BUFSIZE; - - /* round down to an integral number of XReps */ - len = (len / SIZEOF(xEvent)) * SIZEOF(xEvent); - } - -#ifdef XTHREADS - if (xthread_have_id(self)) - /* save value we may have to stick in conni_thread */ - dpy->lock->reading_thread = self; -#endif /* XTHREADS */ - dpy->flags |= XlibDisplayReadEvents; - i = _XRead (dpy, read_buf, (long) len); - dpy->flags &= ~XlibDisplayReadEvents; - if (i == -2) { - /* special flag from _XRead to say that internal connection has - done XPutBackEvent. Which we can use so we're done. */ - got_event: -#ifdef XTHREADS - if (dpy->lock && dpy->lock->lock_wait) { - if (dpy->lock->event_awaiters != cvl) - /* since it is not us, must be user lock thread */ - ConditionSignal(dpy, - dpy->lock->event_awaiters->cv); - (*dpy->lock->lock_wait)(dpy); - continue; - } -#endif - break; - } -#ifdef XTHREADS - if (xthread_have_id(self)) - xthread_clear_id(dpy->lock->reading_thread); - - /* what did we actually read: reply or event? */ - if (dpy->lock && dpy->lock->reply_awaiters) { - if (((xReply *)read_buf)->generic.type == X_Reply || - ((xReply *)read_buf)->generic.type == X_Error) - { - dpy->lock->reply_was_read = True; - dpy->lock->reply_first = True; - if (read_buf != (char *)dpy->lock->reply_awaiters->buf) - memcpy(dpy->lock->reply_awaiters->buf, - read_buf, len); - ConditionSignal(dpy, dpy->lock->reply_awaiters->cv); - continue; - } else if (read_buf != buf.buf) - memcpy(buf.buf, read_buf, len); - } -#endif /* XTHREADS */ - - STARTITERATE(rep,xReply,buf.buf,len > 0) { - if (rep->generic.type == X_Reply) { - RESETITERPTR(rep,xReply, - _XAsyncReply (dpy, rep, - ITERPTR(rep), &len, True)); - pend = len; - } else { - if (rep->generic.type == X_Error) - _XError (dpy, (xError *) rep); - else /* must be an event packet */ - { - if (rep->generic.type == GenericEvent) - { - int evlen; - evlen = (rep->generic.length << 2); - if (_XRead(dpy, &read_buf[len], evlen) == -2) - goto got_event; /* XXX: aargh! */ - } - - _XEnq (dpy, (xEvent *)rep); - } - INCITERPTR(rep,xReply); - len -= SIZEOF(xReply); - } - } ENDITERATE; - } while (!_XNewerQueuedEvent(dpy, entry_event_serial_num)); - - UnlockNextEventReader(dpy); -} - -/* - * _XRead - Read bytes from the socket taking into account incomplete - * reads. This routine may have to be reworked if int < long. - */ -int _XRead( - register Display *dpy, - register char *data, - register long size) -{ - register long bytes_read; -#ifdef XTHREADS - int original_size = size; -#endif - - if ((dpy->flags & XlibDisplayIOError) || size == 0) - return 0; - ESET(0); - while ((bytes_read = _X11TransRead(dpy->trans_conn, data, (int)size)) - != size) { - - if (bytes_read > 0) { - size -= bytes_read; - data += bytes_read; - } - else if (ETEST()) { - if (_XWaitForReadable(dpy) == -2) - return -2; /* internal connection did XPutBackEvent */ - ESET(0); - } -#ifdef SUNSYSV - else if (ECHECK(0)) { - if (_XWaitForReadable(dpy) == -2) - return -2; /* internal connection did XPutBackEvent */ - } -#endif - else if (bytes_read == 0) { - /* Read failed because of end of file! */ - ESET(EPIPE); - _XIOError(dpy); - } - - else /* bytes_read is less than 0; presumably -1 */ { - /* If it's a system call interrupt, it's not an error. */ - if (!ECHECK(EINTR)) - _XIOError(dpy); - } - } -#ifdef XTHREADS - if (dpy->lock && dpy->lock->reply_bytes_left > 0) - { - dpy->lock->reply_bytes_left -= original_size; - if (dpy->lock->reply_bytes_left == 0) { - dpy->flags &= ~XlibDisplayReply; - UnlockNextReplyReader(dpy); - } - } -#endif /* XTHREADS*/ - return 0; -} -#endif /* !USE_XCB */ - -#ifdef LONG64 -void _XRead32( - Display *dpy, - register long *data, - long len) -{ - register int *buf; - register long i; - - if (len) { - (void) _XRead(dpy, (char *)data, len); - i = len >> 2; - buf = (int *)data + i; - data += i; - while (--i >= 0) - *--data = *--buf; - } -} -#endif /* LONG64 */ - -#ifdef WORD64 - -/* - * XXX This is a *really* stupid way of doing this.... - * PACKBUFFERSIZE must be a multiple of 4. - */ - -#define PACKBUFFERSIZE 4096 - - -/* - * _XRead32 - Read bytes from the socket unpacking each 32 bits - * into a long (64 bits on a CRAY computer). - * - */ -static void _doXRead32( - register Display *dpy, - register long *data - register long size, - register char *packbuffer) -{ - long *lpack,*lp; - long mask32 = 0x00000000ffffffff; - long maskw, nwords, i, bits; - - _XReadPad (dpy, packbuffer, size); - - lp = data; - lpack = (long *) packbuffer; - nwords = size >> 2; - bits = 32; - - for(i=0;i<nwords;i++){ - maskw = mask32 << bits; - *lp++ = ( *lpack & maskw ) >> bits; - bits = bits ^32; - if(bits){ - lpack++; - } - } -} - -void _XRead32( - Display *dpy, - long *data, - long len) -{ - char packbuffer[PACKBUFFERSIZE]; - unsigned nunits = PACKBUFFERSIZE >> 2; - - for (; len > PACKBUFFERSIZE; len -= PACKBUFFERSIZE, data += nunits) { - _doXRead32 (dpy, data, PACKBUFFERSIZE, packbuffer); - } - if (len) _doXRead32 (dpy, data, len, packbuffer); -} - - - -/* - * _XRead16 - Read bytes from the socket unpacking each 16 bits - * into a long (64 bits on a CRAY computer). - * - */ -static _doXRead16( - register Display *dpy, - register short *data, - register long size, - char *packbuffer) -{ - long *lpack,*lp; - long mask16 = 0x000000000000ffff; - long maskw, nwords, i, bits; - - (void) _XRead(dpy,packbuffer,size); /* don't do a padded read... */ - - lp = (long *) data; - lpack = (long *) packbuffer; - nwords = size >> 1; /* number of 16 bit words to be unpacked */ - bits = 48; - for(i=0;i<nwords;i++){ - maskw = mask16 << bits; - *lp++ = ( *lpack & maskw ) >> bits; - bits -= 16; - if(bits < 0){ - lpack++; - bits = 48; - } - } -} - -void _XRead16( - Display *dpy, - short *data, - long len) -{ - char packbuffer[PACKBUFFERSIZE]; - unsigned nunits = PACKBUFFERSIZE >> 1; - - for (; len > PACKBUFFERSIZE; len -= PACKBUFFERSIZE, data += nunits) { - _doXRead16 (dpy, data, PACKBUFFERSIZE, packbuffer); - } - if (len) _doXRead16 (dpy, data, len, packbuffer); -} - -void _XRead16Pad( - Display *dpy, - short *data, - long size) -{ - int slop = (size & 3); - short slopbuf[3]; - - _XRead16 (dpy, data, size); - if (slop > 0) { - _XRead16 (dpy, slopbuf, 4 - slop); - } -} -#endif /* WORD64 */ - - -#if !USE_XCB -/* - * _XReadPad - Read bytes from the socket taking into account incomplete - * reads. If the number of bytes is not 0 mod 4, read additional pad - * bytes. This routine may have to be reworked if int < long. - */ -void _XReadPad( - register Display *dpy, - register char *data, - register long size) -{ - register long bytes_read; - struct iovec iov[2]; - char pad[3]; -#ifdef XTHREADS - int original_size; -#endif - - if ((dpy->flags & XlibDisplayIOError) || size == 0) return; - iov[0].iov_len = (int)size; - iov[0].iov_base = data; - /* - * The following hack is used to provide 32 bit long-word - * aligned padding. The [1] vector is of length 0, 1, 2, or 3, - * whatever is needed. - */ - - iov[1].iov_len = -size & 3; - iov[1].iov_base = pad; - size += iov[1].iov_len; -#ifdef XTHREADS - original_size = size; -#endif - ESET(0); - while ((bytes_read = _X11TransReadv (dpy->trans_conn, iov, 2)) != size) { - - if (bytes_read > 0) { - size -= bytes_read; - if (iov[0].iov_len < bytes_read) { - int pad_bytes_read = bytes_read - iov[0].iov_len; - iov[1].iov_len -= pad_bytes_read; - iov[1].iov_base = - (char *)iov[1].iov_base + pad_bytes_read; - iov[0].iov_len = 0; - } - else { - iov[0].iov_len -= bytes_read; - iov[0].iov_base = (char *)iov[0].iov_base + bytes_read; - } - } - else if (ETEST()) { - _XWaitForReadable(dpy); - ESET(0); - } -#ifdef SUNSYSV - else if (ECHECK(0)) { - _XWaitForReadable(dpy); - } -#endif - else if (bytes_read == 0) { - /* Read failed because of end of file! */ - ESET(EPIPE); - _XIOError(dpy); - } - - else /* bytes_read is less than 0; presumably -1 */ { - /* If it's a system call interrupt, it's not an error. */ - if (!ECHECK(EINTR)) - _XIOError(dpy); - } - } -#ifdef XTHREADS - if (dpy->lock && dpy->lock->reply_bytes_left > 0) - { - dpy->lock->reply_bytes_left -= original_size; - if (dpy->lock->reply_bytes_left == 0) { - dpy->flags &= ~XlibDisplayReply; - UnlockNextReplyReader(dpy); - } - } -#endif /* XTHREADS*/ -} - -/* - * _XSend - Flush the buffer and send the client data. 32 bit word aligned - * transmission is used, if size is not 0 mod 4, extra bytes are transmitted. - * This routine may have to be reworked if int < long; - */ -void -_XSend ( - register Display *dpy, - _Xconst char *data, - register long size) -{ - struct iovec iov[3]; - static char const pad[3] = {0, 0, 0}; - /* XText8 and XText16 require that the padding bytes be zero! */ - - long skip, dbufsize, padsize, total, todo; - _XExtension *ext; - - if (!size || (dpy->flags & XlibDisplayIOError)) return; - dbufsize = dpy->bufptr - dpy->buffer; -#ifdef XTHREADS - dpy->flags |= XlibDisplayWriting; - /* make sure no one else can put in data */ - dpy->bufptr = dpy->bufmax; -#endif - padsize = -size & 3; - for (ext = dpy->flushes; ext; ext = ext->next_flush) { - (*ext->before_flush)(dpy, &ext->codes, dpy->buffer, dbufsize); - (*ext->before_flush)(dpy, &ext->codes, (char *)data, size); - if (padsize) - (*ext->before_flush)(dpy, &ext->codes, pad, padsize); - } - skip = 0; - todo = total = dbufsize + size + padsize; - - /* - * There are 3 pieces that may need to be written out: - * - * o whatever is in the display buffer - * o the data passed in by the user - * o any padding needed to 32bit align the whole mess - * - * This loop looks at all 3 pieces each time through. It uses skip - * to figure out whether or not a given piece is needed. - */ - while (total) { - long before = skip; /* amount of whole thing written */ - long remain = todo; /* amount to try this time, <= total */ - int i = 0; - long len; - - /* You could be very general here and have "in" and "out" iovecs - * and write a loop without using a macro, but what the heck. This - * translates to: - * - * how much of this piece is new? - * if more new then we are trying this time, clamp - * if nothing new - * then bump down amount already written, for next piece - * else put new stuff in iovec, will need all of next piece - * - * Note that todo had better be at least 1 or else we'll end up - * writing 0 iovecs. - */ -#define InsertIOV(pointer, length) \ - len = (length) - before; \ - if (len > remain) \ - len = remain; \ - if (len <= 0) { \ - before = (-len); \ - } else { \ - iov[i].iov_len = len; \ - iov[i].iov_base = (pointer) + before; \ - i++; \ - remain -= len; \ - before = 0; \ - } - - InsertIOV (dpy->buffer, dbufsize) - InsertIOV ((char *)data, size) - InsertIOV ((char *)pad, padsize) - - ESET(0); - if ((len = _X11TransWritev(dpy->trans_conn, iov, i)) >= 0) { - skip += len; - total -= len; - todo = total; - } else if (ETEST()) { - _XWaitForWritable(dpy -#ifdef XTHREADS - , NULL -#endif - ); -#ifdef SUNSYSV - } else if (ECHECK(0)) { - _XWaitForWritable(dpy -#ifdef XTHREADS - , NULL -#endif - ); -#endif -#ifdef ESZTEST - } else if (ESZTEST()) { - if (todo > 1) - todo >>= 1; - else { - _XWaitForWritable(dpy -#ifdef XTHREADS - , NULL -#endif - ); - } -#endif - } else if (!ECHECK(EINTR)) { - _XIOError(dpy); - } - } - dpy->last_req = (char *) & _dummy_request; - _XSetSeqSyncFunction(dpy); - dpy->bufptr = dpy->buffer; -#ifdef XTHREADS - dpy->flags &= ~XlibDisplayWriting; -#endif - return; -} - -static void -_XGetMiscCode( - register Display *dpy) -{ - xQueryExtensionReply qrep; - register xQueryExtensionReq *qreq; - xXCMiscGetVersionReply vrep; - register xXCMiscGetVersionReq *vreq; - - if (dpy->xcmisc_opcode) - return; - GetReq(QueryExtension, qreq); - qreq->nbytes = sizeof(XCMiscExtensionName) - 1; - qreq->length += (qreq->nbytes+(unsigned)3)>>2; - _XSend(dpy, XCMiscExtensionName, (long)qreq->nbytes); - if (!_XReply (dpy, (xReply *)&qrep, 0, xTrue)) - dpy->xcmisc_opcode = -1; - else { - GetReq(XCMiscGetVersion, vreq); - vreq->reqType = qrep.major_opcode; - vreq->miscReqType = X_XCMiscGetVersion; - vreq->majorVersion = XCMiscMajorVersion; - vreq->minorVersion = XCMiscMinorVersion; - if (!_XReply (dpy, (xReply *)&vrep, 0, xTrue)) - dpy->xcmisc_opcode = -1; - else - dpy->xcmisc_opcode = qrep.major_opcode; - } -} - -int -_XIDHandler( - register Display *dpy) -{ - xXCMiscGetXIDRangeReply grep; - register xXCMiscGetXIDRangeReq *greq; - int sent_req = 0; - - LockDisplay(dpy); - if (dpy->resource_max == dpy->resource_mask + 1) { - _XGetMiscCode(dpy); - if (dpy->xcmisc_opcode > 0) { - GetReq(XCMiscGetXIDRange, greq); - greq->reqType = dpy->xcmisc_opcode; - greq->miscReqType = X_XCMiscGetXIDRange; - if (_XReply (dpy, (xReply *)&grep, 0, xTrue) && grep.count) { - dpy->resource_id = ((grep.start_id - dpy->resource_base) >> - dpy->resource_shift); - dpy->resource_max = dpy->resource_id; - if (grep.count > 5) - dpy->resource_max += grep.count - 6; - dpy->resource_max <<= dpy->resource_shift; - } - sent_req = 1; - } - } - UnlockDisplay(dpy); - if (sent_req) - SyncHandle(); - return 0; -} - -/* - * _XAllocID - resource ID allocation routine. - */ -XID _XAllocID( - register Display *dpy) -{ - XID id; - - id = dpy->resource_id << dpy->resource_shift; - if (id >= dpy->resource_max) { - _XSetPrivSyncFunction(dpy); - dpy->resource_max = dpy->resource_mask + 1; - } - if (id <= dpy->resource_mask) { - dpy->resource_id++; - return (dpy->resource_base + id); - } - if (id != 0x10000000) { - (void) fprintf(stderr, - "Xlib: resource ID allocation space exhausted!\n"); - id = 0x10000000; - dpy->resource_id = id >> dpy->resource_shift; - } - return id; -} - -/* - * _XAllocIDs - multiple resource ID allocation routine. - */ -void _XAllocIDs( - register Display *dpy, - XID *ids, - int count) -{ - XID id; - int i; - xXCMiscGetXIDListReply grep; - register xXCMiscGetXIDListReq *greq; - - id = dpy->resource_id << dpy->resource_shift; - if (dpy->resource_max <= dpy->resource_mask && - id <= dpy->resource_mask && - (dpy->resource_max - id) > ((count - 1) << dpy->resource_shift)) { - id += dpy->resource_base; - for (i = 0; i < count; i++) { - ids[i] = id; - id += (1 << dpy->resource_shift); - dpy->resource_id++; - } - return; - } - grep.count = 0; - _XGetMiscCode(dpy); - if (dpy->xcmisc_opcode > 0) { - GetReq(XCMiscGetXIDList, greq); - greq->reqType = dpy->xcmisc_opcode; - greq->miscReqType = X_XCMiscGetXIDList; - greq->count = count; - if (_XReply(dpy, (xReply *)&grep, 0, xFalse) && grep.count) { - _XRead32(dpy, (long *) ids, 4L * (long) (grep.count)); - for (i = 0; i < grep.count; i++) { - id = (ids[i] - dpy->resource_base) >> dpy->resource_shift; - if (id >= dpy->resource_id) - dpy->resource_id = id; - } - if (id >= dpy->resource_max) { - _XSetPrivSyncFunction(dpy); - dpy->resource_max = dpy->resource_mask + 1; - } - } - } - for (i = grep.count; i < count; i++) - ids[i] = XAllocID(dpy); -} -#endif /* !USE_XCB */ - -/* - * The hard part about this is that we only get 16 bits from a reply. - * We have three values that will march along, with the following invariant: - * dpy->last_request_read <= rep->sequenceNumber <= dpy->request - * We have to keep - * dpy->request - dpy->last_request_read < 2^16 - * or else we won't know for sure what value to use in events. We do this - * by forcing syncs when we get close. - */ - -unsigned long -_XSetLastRequestRead( - register Display *dpy, - register xGenericReply *rep) -{ - register unsigned long newseq, lastseq; - - lastseq = dpy->last_request_read; - /* - * KeymapNotify has no sequence number, but is always guaranteed - * to immediately follow another event, except when generated via - * SendEvent (hmmm). - */ - if ((rep->type & 0x7f) == KeymapNotify) - return(lastseq); - - newseq = (lastseq & ~((unsigned long)0xffff)) | rep->sequenceNumber; - - if (newseq < lastseq) { - newseq += 0x10000; - if (newseq > dpy->request) { - (void) fprintf (stderr, - "Xlib: sequence lost (0x%lx > 0x%lx) in reply type 0x%x!\n", - newseq, dpy->request, - (unsigned int) rep->type); - newseq -= 0x10000; - } - } - - dpy->last_request_read = newseq; - return(newseq); -} - -#if !USE_XCB -/* - * _XReply - Wait for a reply packet and copy its contents into the - * specified rep. Meanwhile we must handle error and event packets that - * we may encounter. - */ -Status -_XReply ( - register Display *dpy, - register xReply *rep, - int extra, /* number of 32-bit words expected after the reply */ - Bool discard) /* should I discard data following "extra" words? */ -{ - /* Pull out the serial number now, so that (currently illegal) requests - * generated by an error handler don't confuse us. - */ - unsigned long cur_request = dpy->request; -#ifdef XTHREADS - struct _XCVList *cvl; -#endif - - if (dpy->flags & XlibDisplayIOError) - return 0; - -#ifdef XTHREADS - /* create our condition variable and append to list */ - cvl = QueueReplyReaderLock(dpy); - if (cvl) { - cvl->buf = rep; - if (dpy->lock->reply_awaiters == cvl && !dpy->lock->event_awaiters) - dpy->lock->reply_first = True; - } - -#ifdef XTHREADS_DEBUG - printf("_XReply called in thread %x, adding %x to cvl\n", - XThread_Self(), cvl); -#endif - - _XFlushInt(dpy, cvl ? cvl->cv : NULL); - /* if it is not our turn to read a reply off the wire, - * wait til we're at head of list. if there is an event waiter, - * and our reply hasn't been read, they'll be in select and will - * hand control back to us next. - */ - if(dpy->lock && - (dpy->lock->reply_awaiters != cvl || !dpy->lock->reply_first)) { - ConditionWait(dpy, cvl->cv); - } - dpy->flags |= XlibDisplayReply; -#else /* XTHREADS else */ - _XFlush(dpy); -#endif - - for (;;) { -#ifdef XTHREADS - /* Did another thread's _XReadEvents get our reply by accident? */ - if (!dpy->lock || !dpy->lock->reply_was_read) -#endif - (void) _XRead(dpy, (char *)rep, (long)SIZEOF(xReply)); -#ifdef XTHREADS - if (dpy->lock) - dpy->lock->reply_was_read = False; -#endif - - switch ((int)rep->generic.type) { - - case X_Reply: - /* Reply received. Fast update for synchronous replies, - * but deal with multiple outstanding replies. - */ - if (rep->generic.sequenceNumber == (cur_request & 0xffff)) - dpy->last_request_read = cur_request; - else { - int pend = SIZEOF(xReply); - if (_XAsyncReply(dpy, rep, (char *)rep, &pend, False) - != (char *)rep) - continue; - } - if (extra <= rep->generic.length) { - if (extra > 0) - /* - * Read the extra data into storage immediately - * following the GenericReply structure. - */ - (void) _XRead (dpy, (char *) (NEXTPTR(rep,xReply)), - ((long)extra) << 2); - if (discard) { - if (extra < rep->generic.length) - _XEatData(dpy, (rep->generic.length - extra) << 2); - } -#ifdef XTHREADS - if (dpy->lock) { - if (discard) { - dpy->lock->reply_bytes_left = 0; - } else { - dpy->lock->reply_bytes_left = - (rep->generic.length - extra) << 2; - } - if (dpy->lock->reply_bytes_left == 0) { - dpy->flags &= ~XlibDisplayReply; - UnlockNextReplyReader(dpy); - } - } else - dpy->flags &= ~XlibDisplayReply; -#endif - return 1; - } - /* - *if we get here, then extra > rep->generic.length--meaning we - * read a reply that's shorter than we expected. This is an - * error, but we still need to figure out how to handle it... - */ - (void) _XRead (dpy, (char *) (NEXTPTR(rep,xReply)), - ((long) rep->generic.length) << 2); - dpy->flags &= ~XlibDisplayReply; - UnlockNextReplyReader(dpy); - _XIOError (dpy); - return (0); - - case X_Error: - { - register _XExtension *ext; - register Bool ret = False; - int ret_code; - xError *err = (xError *) rep; - unsigned long serial; - - dpy->flags &= ~XlibDisplayReply; - serial = _XSetLastRequestRead(dpy, (xGenericReply *)rep); - if (serial == cur_request) - /* do not die on "no such font", "can't allocate", - "can't grab" failures */ - switch ((int)err->errorCode) { - case BadName: - switch (err->majorCode) { - case X_LookupColor: - case X_AllocNamedColor: - UnlockNextReplyReader(dpy); - return(0); - } - break; - case BadFont: - if (err->majorCode == X_QueryFont) { - UnlockNextReplyReader(dpy); - return (0); - } - break; - case BadAlloc: - case BadAccess: - UnlockNextReplyReader(dpy); - return (0); - } - /* - * we better see if there is an extension who may - * want to suppress the error. - */ - for (ext = dpy->ext_procs; !ret && ext; ext = ext->next) { - if (ext->error) - ret = (*ext->error)(dpy, err, &ext->codes, &ret_code); - } - if (!ret) { - _XError(dpy, err); - ret_code = 0; - } - if (serial == cur_request) { - UnlockNextReplyReader(dpy); - return(ret_code); - } - - } /* case X_Error */ - break; - default: - _XEnq(dpy, (xEvent *) rep); -#ifdef XTHREADS - if (dpy->lock && dpy->lock->event_awaiters) - ConditionSignal(dpy, dpy->lock->event_awaiters->cv); -#endif - break; - } - } -} - -static char * -_XAsyncReply( - Display *dpy, - register xReply *rep, - char *buf, - register int *lenp, - Bool discard) -{ - register _XAsyncHandler *async, *next; - register int len; - register Bool consumed = False; - char *nbuf; - - (void) _XSetLastRequestRead(dpy, &rep->generic); - len = SIZEOF(xReply) + (rep->generic.length << 2); - if (len < SIZEOF(xReply)) { - _XIOError (dpy); - buf += *lenp; - *lenp = 0; - return buf; - } - - for (async = dpy->async_handlers; async; async = next) { - next = async->next; - if ((consumed = (*async->handler)(dpy, rep, buf, *lenp, async->data))) - break; - } - if (!consumed) { - if (!discard) - return buf; - (void) fprintf(stderr, - "Xlib: unexpected async reply (sequence 0x%lx)!\n", - dpy->last_request_read); -#ifdef XTHREADS -#ifdef XTHREADS_DEBUG - printf("thread %x, unexpected async reply\n", XThread_Self()); -#endif -#endif - if (len > *lenp) - _XEatData(dpy, len - *lenp); - } - if (len < SIZEOF(xReply)) - { - _XIOError (dpy); - buf += *lenp; - *lenp = 0; - return buf; - } - if (len >= *lenp) { - buf += *lenp; - *lenp = 0; - return buf; - } - *lenp -= len; - buf += len; - len = *lenp; - nbuf = buf; - while (len > SIZEOF(xReply)) { - if (*buf == X_Reply) - return nbuf; - buf += SIZEOF(xReply); - len -= SIZEOF(xReply); - } - if (len > 0 && len < SIZEOF(xReply)) { - buf = nbuf; - len = SIZEOF(xReply) - len; - nbuf -= len; - memmove(nbuf, buf, *lenp); - (void) _XRead(dpy, nbuf + *lenp, (long)len); - *lenp += len; - } - return nbuf; -} -#endif /* !USE_XCB */ - -/* - * Support for internal connections, such as an IM might use. - * By Stephen Gildea, X Consortium, September 1993 - */ - -/* _XRegisterInternalConnection - * Each IM (or Xlib extension) that opens a file descriptor that Xlib should - * include in its select/poll mask must call this function to register the - * fd with Xlib. Any XConnectionWatchProc registered by XAddConnectionWatch - * will also be called. - * - * Whenever Xlib detects input available on fd, it will call callback - * with call_data to process it. If non-Xlib code calls select/poll - * and detects input available, it must call XProcessInternalConnection, - * which will call the associated callback. - * - * Non-Xlib code can learn about these additional fds by calling - * XInternalConnectionNumbers or, more typically, by registering - * a XConnectionWatchProc with XAddConnectionWatch - * to be called when fds are registered or unregistered. - * - * Returns True if registration succeeded, False if not, typically - * because could not allocate memory. - * Assumes Display locked when called. - */ -Status -_XRegisterInternalConnection( - Display* dpy, - int fd, - _XInternalConnectionProc callback, - XPointer call_data -) -{ - struct _XConnectionInfo *new_conni, **iptr; - struct _XConnWatchInfo *watchers; - XPointer *wd; - - new_conni = (struct _XConnectionInfo*)Xmalloc(sizeof(struct _XConnectionInfo)); - if (!new_conni) - return 0; - new_conni->watch_data = (XPointer *)Xmalloc(dpy->watcher_count * sizeof(XPointer)); - if (!new_conni->watch_data) { - Xfree(new_conni); - return 0; - } - new_conni->fd = fd; - new_conni->read_callback = callback; - new_conni->call_data = call_data; - new_conni->next = NULL; - /* link new structure onto end of list */ - for (iptr = &dpy->im_fd_info; *iptr; iptr = &(*iptr)->next) - ; - *iptr = new_conni; - dpy->im_fd_length++; - _XPollfdCacheAdd(dpy, fd); - - for (watchers=dpy->conn_watchers, wd=new_conni->watch_data; - watchers; - watchers=watchers->next, wd++) { - *wd = NULL; /* for cleanliness */ - (*watchers->fn) (dpy, watchers->client_data, fd, True, wd); - } - - return 1; -} - -/* _XUnregisterInternalConnection - * Each IM (or Xlib extension) that closes a file descriptor previously - * registered with _XRegisterInternalConnection must call this function. - * Any XConnectionWatchProc registered by XAddConnectionWatch - * will also be called. - * - * Assumes Display locked when called. - */ -void -_XUnregisterInternalConnection( - Display* dpy, - int fd -) -{ - struct _XConnectionInfo *info_list, **prev; - struct _XConnWatchInfo *watch; - XPointer *wd; - - for (prev = &dpy->im_fd_info; (info_list = *prev); - prev = &info_list->next) { - if (info_list->fd == fd) { - *prev = info_list->next; - dpy->im_fd_length--; - for (watch=dpy->conn_watchers, wd=info_list->watch_data; - watch; - watch=watch->next, wd++) { - (*watch->fn) (dpy, watch->client_data, fd, False, wd); - } - if (info_list->watch_data) - Xfree (info_list->watch_data); - Xfree (info_list); - break; - } - } - _XPollfdCacheDel(dpy, fd); -} - -/* XInternalConnectionNumbers - * Returns an array of fds and an array of corresponding call data. - * Typically a XConnectionWatchProc registered with XAddConnectionWatch - * will be used instead of this function to discover - * additional fds to include in the select/poll mask. - * - * The list is allocated with Xmalloc and should be freed by the caller - * with Xfree; - */ -Status -XInternalConnectionNumbers( - Display *dpy, - int **fd_return, - int *count_return -) -{ - int count; - struct _XConnectionInfo *info_list; - int *fd_list; - - LockDisplay(dpy); - count = 0; - for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) - count++; - fd_list = (int*) Xmalloc (count * sizeof(int)); - if (!fd_list) { - UnlockDisplay(dpy); - return 0; - } - count = 0; - for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) { - fd_list[count] = info_list->fd; - count++; - } - UnlockDisplay(dpy); - - *fd_return = fd_list; - *count_return = count; - return 1; -} - -void _XProcessInternalConnection( - Display *dpy, - struct _XConnectionInfo *conn_info) -{ - dpy->flags |= XlibDisplayProcConni; -#if defined(XTHREADS) && !USE_XCB - if (dpy->lock) { - /* check cache to avoid call to thread_self */ - if (xthread_have_id(dpy->lock->reading_thread)) - dpy->lock->conni_thread = dpy->lock->reading_thread; - else - dpy->lock->conni_thread = XThread_Self(); - } -#endif /* XTHREADS && !USE_XCB */ - UnlockDisplay(dpy); - (*conn_info->read_callback) (dpy, conn_info->fd, conn_info->call_data); - LockDisplay(dpy); -#if defined(XTHREADS) && !USE_XCB - if (dpy->lock) - xthread_clear_id(dpy->lock->conni_thread); -#endif /* XTHREADS && !USE_XCB */ - dpy->flags &= ~XlibDisplayProcConni; -} - -/* XProcessInternalConnection - * Call the _XInternalConnectionProc registered by _XRegisterInternalConnection - * for this fd. - * The Display is NOT locked during the call. - */ -void -XProcessInternalConnection( - Display* dpy, - int fd -) -{ - struct _XConnectionInfo *info_list; - - LockDisplay(dpy); - for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) { - if (info_list->fd == fd) { - _XProcessInternalConnection(dpy, info_list); - break; - } - } - UnlockDisplay(dpy); -} - -/* XAddConnectionWatch - * Register a callback to be called whenever _XRegisterInternalConnection - * or _XUnregisterInternalConnection is called. - * Callbacks are called with the Display locked. - * If any connections are already registered, the callback is immediately - * called for each of them. - */ -Status -XAddConnectionWatch( - Display* dpy, - XConnectionWatchProc callback, - XPointer client_data -) -{ - struct _XConnWatchInfo *new_watcher, **wptr; - struct _XConnectionInfo *info_list; - XPointer *wd_array; - - LockDisplay(dpy); - - /* allocate new watch data */ - for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) { - wd_array = (XPointer *)Xrealloc((char *)info_list->watch_data, - (dpy->watcher_count + 1) * - sizeof(XPointer)); - if (!wd_array) { - UnlockDisplay(dpy); - return 0; - } - wd_array[dpy->watcher_count] = NULL; /* for cleanliness */ - } - - new_watcher = (struct _XConnWatchInfo*)Xmalloc(sizeof(struct _XConnWatchInfo)); - if (!new_watcher) { - UnlockDisplay(dpy); - return 0; - } - new_watcher->fn = callback; - new_watcher->client_data = client_data; - new_watcher->next = NULL; - - /* link new structure onto end of list */ - for (wptr = &dpy->conn_watchers; *wptr; wptr = &(*wptr)->next) - ; - *wptr = new_watcher; - dpy->watcher_count++; - - /* call new watcher on all currently registered fds */ - for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) { - (*callback) (dpy, client_data, info_list->fd, True, - info_list->watch_data + dpy->watcher_count - 1); - } - - UnlockDisplay(dpy); - return 1; -} - -/* XRemoveConnectionWatch - * Unregister a callback registered by XAddConnectionWatch. - * Both callback and client_data must match what was passed to - * XAddConnectionWatch. - */ -void -XRemoveConnectionWatch( - Display* dpy, - XConnectionWatchProc callback, - XPointer client_data -) -{ - struct _XConnWatchInfo *watch; - struct _XConnWatchInfo *previous = NULL; - struct _XConnectionInfo *conni; - int counter = 0; - - LockDisplay(dpy); - for (watch=dpy->conn_watchers; watch; watch=watch->next) { - if (watch->fn == callback && watch->client_data == client_data) { - if (previous) - previous->next = watch->next; - else - dpy->conn_watchers = watch->next; - Xfree (watch); - dpy->watcher_count--; - /* remove our watch_data for each connection */ - for (conni=dpy->im_fd_info; conni; conni=conni->next) { - /* don't bother realloc'ing; these arrays are small anyway */ - /* overlapping */ - memmove(conni->watch_data+counter, - conni->watch_data+counter+1, - dpy->watcher_count - counter); - } - break; - } - previous = watch; - counter++; - } - UnlockDisplay(dpy); -} - -/* end of internal connections support */ - - -#if !USE_XCB -/* Read and discard "n" 8-bit bytes of data */ - -void _XEatData( - Display *dpy, - register unsigned long n) -{ -#define SCRATCHSIZE 2048 - char buf[SCRATCHSIZE]; - - while (n > 0) { - register long bytes_read = (n > SCRATCHSIZE) ? SCRATCHSIZE : n; - (void) _XRead (dpy, buf, bytes_read); - n -= bytes_read; - } -#undef SCRATCHSIZE -} -#endif /* !USE_XCB */ - -/* Cookie jar implementation - dpy->cookiejar is a linked list. _XEnq receives the events but leaves - them in the normal EQ. _XStoreEvent returns the cookie event (minus - data pointer) and adds it to the cookiejar. _XDeq just removes - the entry like any other event but resets the data pointer for - cookie events (to avoid double-free, the memory is re-used by Xlib). - - _XFetchEventCookie (called from XGetEventData) removes a cookie from the - jar. _XFreeEventCookies removes all unclaimed cookies from the jar - (called by XNextEvent). - - _XFreeDisplayStructure calls _XFreeEventCookies for each cookie in the - normal EQ. - */ - -#include "utlist.h" -struct stored_event { - XGenericEventCookie ev; - struct stored_event *prev; - struct stored_event *next; -}; - -Bool -_XIsEventCookie(Display *dpy, XEvent *ev) -{ - return (ev->xcookie.type == GenericEvent && - dpy->generic_event_vec[ev->xcookie.extension & 0x7F] != NULL); -} - -/** - * Free all events in the event list. - */ -void -_XFreeEventCookies(Display *dpy) -{ - struct stored_event **head, *e, *tmp; - - if (!dpy->cookiejar) - return; - - head = (struct stored_event**)&dpy->cookiejar; - - DL_FOREACH_SAFE(*head, e, tmp) { - XFree(e->ev.data); - XFree(e); - if (dpy->cookiejar == e) - dpy->cookiejar = NULL; - } -} - -/** - * Add an event to the display's event list. This event must be freed on the - * next call to XNextEvent(). - */ -void -_XStoreEventCookie(Display *dpy, XEvent *event) -{ - XGenericEventCookie* cookie = &event->xcookie; - struct stored_event **head, *add; - - if (!_XIsEventCookie(dpy, event)) - return; - - head = (struct stored_event**)(&dpy->cookiejar); - - add = Xmalloc(sizeof(struct stored_event)); - if (!add) { - ESET(ENOMEM); - _XIOError(dpy); - } - add->ev = *cookie; - DL_APPEND(*head, add); - cookie->data = NULL; /* don't return data yet, must be claimed */ -} - -/** - * Return the event with the given cookie and remove it from the list. - */ -Bool -_XFetchEventCookie(Display *dpy, XGenericEventCookie* ev) -{ - Bool ret = False; - struct stored_event **head, *event; - head = (struct stored_event**)&dpy->cookiejar; - - if (!_XIsEventCookie(dpy, (XEvent*)ev)) - return ret; - - DL_FOREACH(*head, event) { - if (event->ev.cookie == ev->cookie && - event->ev.extension == ev->extension && - event->ev.evtype == ev->evtype) { - *ev = event->ev; - DL_DELETE(*head, event); - Xfree(event); - ret = True; - break; - } - } - - return ret; -} - -Bool -_XCopyEventCookie(Display *dpy, XGenericEventCookie *in, XGenericEventCookie *out) -{ - Bool ret = False; - int extension; - - if (!_XIsEventCookie(dpy, (XEvent*)in) || !out) - return ret; - - extension = in->extension & 0x7F; - - if (!dpy->generic_event_copy_vec[extension]) - return ret; - - ret = ((*dpy->generic_event_copy_vec[extension])(dpy, in, out)); - out->cookie = ret ? ++dpy->next_cookie : 0; - return ret; -} - - -/* - * _XEnq - Place event packets on the display's queue. - * note that no squishing of move events in V11, since there - * is pointer motion hints.... - */ -void _XEnq( - register Display *dpy, - register xEvent *event) -{ - register _XQEvent *qelt; - int type, extension; - - if ((qelt = dpy->qfree)) { - /* If dpy->qfree is non-NULL do this, else malloc a new one. */ - dpy->qfree = qelt->next; - } - else if ((qelt = - (_XQEvent *) Xmalloc((unsigned)sizeof(_XQEvent))) == NULL) { - /* Malloc call failed! */ - ESET(ENOMEM); - _XIOError(dpy); - } - qelt->next = NULL; - - type = event->u.u.type & 0177; - extension = ((xGenericEvent*)event)->extension; - /* If an extension has registerd a generic_event_vec handler, then - * it can handle event cookies. Otherwise, proceed with the normal - * event handlers. - * - * If the generic_event_vec is called, qelt->event is a event cookie - * with the data pointer and the "free" pointer set. Data pointer is - * some memory allocated by the extension. - */ - if (type == GenericEvent && dpy->generic_event_vec[extension & 0x7F]) { - XGenericEventCookie *cookie = &qelt->event.xcookie; - (*dpy->generic_event_vec[extension & 0x7F])(dpy, cookie, event); - cookie->cookie = ++dpy->next_cookie; - - qelt->qserial_num = dpy->next_event_serial_num++; - if (dpy->tail) dpy->tail->next = qelt; - else dpy->head = qelt; - - dpy->tail = qelt; - dpy->qlen++; - } else if ((*dpy->event_vec[type])(dpy, &qelt->event, event)) { - qelt->qserial_num = dpy->next_event_serial_num++; - if (dpy->tail) dpy->tail->next = qelt; - else dpy->head = qelt; - - dpy->tail = qelt; - dpy->qlen++; - } else { - /* ignored, or stashed away for many-to-one compression */ - qelt->next = dpy->qfree; - dpy->qfree = qelt; - } -} - -/* - * _XDeq - Remove event packet from the display's queue. - */ -void _XDeq( - register Display *dpy, - register _XQEvent *prev, /* element before qelt */ - register _XQEvent *qelt) /* element to be unlinked */ -{ - if (prev) { - if ((prev->next = qelt->next) == NULL) - dpy->tail = prev; - } else { - /* no prev, so removing first elt */ - if ((dpy->head = qelt->next) == NULL) - dpy->tail = NULL; - } - qelt->qserial_num = 0; - qelt->next = dpy->qfree; - dpy->qfree = qelt; - dpy->qlen--; - - if (_XIsEventCookie(dpy, &qelt->event)) { - XGenericEventCookie* cookie = &qelt->event.xcookie; - /* dpy->qfree is re-used, reset memory to avoid double free on - * _XFreeDisplayStructure */ - cookie->data = NULL; - } -} - -/* - * EventToWire in separate file in that often not needed. - */ - -/*ARGSUSED*/ -Bool -_XUnknownWireEvent( - register Display *dpy, /* pointer to display structure */ - register XEvent *re, /* pointer to where event should be reformatted */ - register xEvent *event) /* wire protocol event */ -{ -#ifdef notdef - (void) fprintf(stderr, - "Xlib: unhandled wire event! event number = %d, display = %x\n.", - event->u.u.type, dpy); -#endif - return(False); -} - -Bool -_XUnknownWireEventCookie( - Display *dpy, /* pointer to display structure */ - XGenericEventCookie *re, /* pointer to where event should be reformatted */ - xEvent *event) /* wire protocol event */ -{ -#ifdef notdef - fprintf(stderr, - "Xlib: unhandled wire cookie event! extension number = %d, display = %x\n.", - ((xGenericEvent*)event)->extension, dpy); -#endif - return(False); -} - -Bool -_XUnknownCopyEventCookie( - Display *dpy, /* pointer to display structure */ - XGenericEventCookie *in, /* source */ - XGenericEventCookie *out) /* destination */ -{ -#ifdef notdef - fprintf(stderr, - "Xlib: unhandled cookie event copy! extension number = %d, display = %x\n.", - in->extension, dpy); -#endif - return(False); -} - -/*ARGSUSED*/ -Status -_XUnknownNativeEvent( - register Display *dpy, /* pointer to display structure */ - register XEvent *re, /* pointer to where event should be reformatted */ - register xEvent *event) /* wire protocol event */ -{ -#ifdef notdef - (void) fprintf(stderr, - "Xlib: unhandled native event! event number = %d, display = %x\n.", - re->type, dpy); -#endif - return(0); -} -/* - * reformat a wire event into an XEvent structure of the right type. - */ -Bool -_XWireToEvent( - register Display *dpy, /* pointer to display structure */ - register XEvent *re, /* pointer to where event should be reformatted */ - register xEvent *event) /* wire protocol event */ -{ - - re->type = event->u.u.type & 0x7f; - ((XAnyEvent *)re)->serial = _XSetLastRequestRead(dpy, - (xGenericReply *)event); - ((XAnyEvent *)re)->send_event = ((event->u.u.type & 0x80) != 0); - ((XAnyEvent *)re)->display = dpy; - - /* Ignore the leading bit of the event type since it is set when a - client sends an event rather than the server. */ - - switch (event-> u.u.type & 0177) { - case KeyPress: - case KeyRelease: - { - register XKeyEvent *ev = (XKeyEvent*) re; - ev->root = event->u.keyButtonPointer.root; - ev->window = event->u.keyButtonPointer.event; - ev->subwindow = event->u.keyButtonPointer.child; - ev->time = event->u.keyButtonPointer.time; - ev->x = cvtINT16toInt(event->u.keyButtonPointer.eventX); - ev->y = cvtINT16toInt(event->u.keyButtonPointer.eventY); - ev->x_root = cvtINT16toInt(event->u.keyButtonPointer.rootX); - ev->y_root = cvtINT16toInt(event->u.keyButtonPointer.rootY); - ev->state = event->u.keyButtonPointer.state; - ev->same_screen = event->u.keyButtonPointer.sameScreen; - ev->keycode = event->u.u.detail; - } - break; - case ButtonPress: - case ButtonRelease: - { - register XButtonEvent *ev = (XButtonEvent *) re; - ev->root = event->u.keyButtonPointer.root; - ev->window = event->u.keyButtonPointer.event; - ev->subwindow = event->u.keyButtonPointer.child; - ev->time = event->u.keyButtonPointer.time; - ev->x = cvtINT16toInt(event->u.keyButtonPointer.eventX); - ev->y = cvtINT16toInt(event->u.keyButtonPointer.eventY); - ev->x_root = cvtINT16toInt(event->u.keyButtonPointer.rootX); - ev->y_root = cvtINT16toInt(event->u.keyButtonPointer.rootY); - ev->state = event->u.keyButtonPointer.state; - ev->same_screen = event->u.keyButtonPointer.sameScreen; - ev->button = event->u.u.detail; - } - break; - case MotionNotify: - { - register XMotionEvent *ev = (XMotionEvent *)re; - ev->root = event->u.keyButtonPointer.root; - ev->window = event->u.keyButtonPointer.event; - ev->subwindow = event->u.keyButtonPointer.child; - ev->time = event->u.keyButtonPointer.time; - ev->x = cvtINT16toInt(event->u.keyButtonPointer.eventX); - ev->y = cvtINT16toInt(event->u.keyButtonPointer.eventY); - ev->x_root = cvtINT16toInt(event->u.keyButtonPointer.rootX); - ev->y_root = cvtINT16toInt(event->u.keyButtonPointer.rootY); - ev->state = event->u.keyButtonPointer.state; - ev->same_screen = event->u.keyButtonPointer.sameScreen; - ev->is_hint = event->u.u.detail; - } - break; - case EnterNotify: - case LeaveNotify: - { - register XCrossingEvent *ev = (XCrossingEvent *) re; - ev->root = event->u.enterLeave.root; - ev->window = event->u.enterLeave.event; - ev->subwindow = event->u.enterLeave.child; - ev->time = event->u.enterLeave.time; - ev->x = cvtINT16toInt(event->u.enterLeave.eventX); - ev->y = cvtINT16toInt(event->u.enterLeave.eventY); - ev->x_root = cvtINT16toInt(event->u.enterLeave.rootX); - ev->y_root = cvtINT16toInt(event->u.enterLeave.rootY); - ev->state = event->u.enterLeave.state; - ev->mode = event->u.enterLeave.mode; - ev->same_screen = (event->u.enterLeave.flags & - ELFlagSameScreen) && True; - ev->focus = (event->u.enterLeave.flags & - ELFlagFocus) && True; - ev->detail = event->u.u.detail; - } - break; - case FocusIn: - case FocusOut: - { - register XFocusChangeEvent *ev = (XFocusChangeEvent *) re; - ev->window = event->u.focus.window; - ev->mode = event->u.focus.mode; - ev->detail = event->u.u.detail; - } - break; - case KeymapNotify: - { - register XKeymapEvent *ev = (XKeymapEvent *) re; - ev->window = None; - memcpy(&ev->key_vector[1], - (char *)((xKeymapEvent *) event)->map, - sizeof (((xKeymapEvent *) event)->map)); - } - break; - case Expose: - { - register XExposeEvent *ev = (XExposeEvent *) re; - ev->window = event->u.expose.window; - ev->x = event->u.expose.x; - ev->y = event->u.expose.y; - ev->width = event->u.expose.width; - ev->height = event->u.expose.height; - ev->count = event->u.expose.count; - } - break; - case GraphicsExpose: - { - register XGraphicsExposeEvent *ev = - (XGraphicsExposeEvent *) re; - ev->drawable = event->u.graphicsExposure.drawable; - ev->x = event->u.graphicsExposure.x; - ev->y = event->u.graphicsExposure.y; - ev->width = event->u.graphicsExposure.width; - ev->height = event->u.graphicsExposure.height; - ev->count = event->u.graphicsExposure.count; - ev->major_code = event->u.graphicsExposure.majorEvent; - ev->minor_code = event->u.graphicsExposure.minorEvent; - } - break; - case NoExpose: - { - register XNoExposeEvent *ev = (XNoExposeEvent *) re; - ev->drawable = event->u.noExposure.drawable; - ev->major_code = event->u.noExposure.majorEvent; - ev->minor_code = event->u.noExposure.minorEvent; - } - break; - case VisibilityNotify: - { - register XVisibilityEvent *ev = (XVisibilityEvent *) re; - ev->window = event->u.visibility.window; - ev->state = event->u.visibility.state; - } - break; - case CreateNotify: - { - register XCreateWindowEvent *ev = - (XCreateWindowEvent *) re; - ev->window = event->u.createNotify.window; - ev->parent = event->u.createNotify.parent; - ev->x = cvtINT16toInt(event->u.createNotify.x); - ev->y = cvtINT16toInt(event->u.createNotify.y); - ev->width = event->u.createNotify.width; - ev->height = event->u.createNotify.height; - ev->border_width = event->u.createNotify.borderWidth; - ev->override_redirect = event->u.createNotify.override; - } - break; - case DestroyNotify: - { - register XDestroyWindowEvent *ev = - (XDestroyWindowEvent *) re; - ev->window = event->u.destroyNotify.window; - ev->event = event->u.destroyNotify.event; - } - break; - case UnmapNotify: - { - register XUnmapEvent *ev = (XUnmapEvent *) re; - ev->window = event->u.unmapNotify.window; - ev->event = event->u.unmapNotify.event; - ev->from_configure = event->u.unmapNotify.fromConfigure; - } - break; - case MapNotify: - { - register XMapEvent *ev = (XMapEvent *) re; - ev->window = event->u.mapNotify.window; - ev->event = event->u.mapNotify.event; - ev->override_redirect = event->u.mapNotify.override; - } - break; - case MapRequest: - { - register XMapRequestEvent *ev = (XMapRequestEvent *) re; - ev->window = event->u.mapRequest.window; - ev->parent = event->u.mapRequest.parent; - } - break; - case ReparentNotify: - { - register XReparentEvent *ev = (XReparentEvent *) re; - ev->event = event->u.reparent.event; - ev->window = event->u.reparent.window; - ev->parent = event->u.reparent.parent; - ev->x = cvtINT16toInt(event->u.reparent.x); - ev->y = cvtINT16toInt(event->u.reparent.y); - ev->override_redirect = event->u.reparent.override; - } - break; - case ConfigureNotify: - { - register XConfigureEvent *ev = (XConfigureEvent *) re; - ev->event = event->u.configureNotify.event; - ev->window = event->u.configureNotify.window; - ev->above = event->u.configureNotify.aboveSibling; - ev->x = cvtINT16toInt(event->u.configureNotify.x); - ev->y = cvtINT16toInt(event->u.configureNotify.y); - ev->width = event->u.configureNotify.width; - ev->height = event->u.configureNotify.height; - ev->border_width = event->u.configureNotify.borderWidth; - ev->override_redirect = event->u.configureNotify.override; - } - break; - case ConfigureRequest: - { - register XConfigureRequestEvent *ev = - (XConfigureRequestEvent *) re; - ev->window = event->u.configureRequest.window; - ev->parent = event->u.configureRequest.parent; - ev->above = event->u.configureRequest.sibling; - ev->x = cvtINT16toInt(event->u.configureRequest.x); - ev->y = cvtINT16toInt(event->u.configureRequest.y); - ev->width = event->u.configureRequest.width; - ev->height = event->u.configureRequest.height; - ev->border_width = event->u.configureRequest.borderWidth; - ev->value_mask = event->u.configureRequest.valueMask; - ev->detail = event->u.u.detail; - } - break; - case GravityNotify: - { - register XGravityEvent *ev = (XGravityEvent *) re; - ev->window = event->u.gravity.window; - ev->event = event->u.gravity.event; - ev->x = cvtINT16toInt(event->u.gravity.x); - ev->y = cvtINT16toInt(event->u.gravity.y); - } - break; - case ResizeRequest: - { - register XResizeRequestEvent *ev = - (XResizeRequestEvent *) re; - ev->window = event->u.resizeRequest.window; - ev->width = event->u.resizeRequest.width; - ev->height = event->u.resizeRequest.height; - } - break; - case CirculateNotify: - { - register XCirculateEvent *ev = (XCirculateEvent *) re; - ev->window = event->u.circulate.window; - ev->event = event->u.circulate.event; - ev->place = event->u.circulate.place; - } - break; - case CirculateRequest: - { - register XCirculateRequestEvent *ev = - (XCirculateRequestEvent *) re; - ev->window = event->u.circulate.window; - ev->parent = event->u.circulate.event; - ev->place = event->u.circulate.place; - } - break; - case PropertyNotify: - { - register XPropertyEvent *ev = (XPropertyEvent *) re; - ev->window = event->u.property.window; - ev->atom = event->u.property.atom; - ev->time = event->u.property.time; - ev->state = event->u.property.state; - } - break; - case SelectionClear: - { - register XSelectionClearEvent *ev = - (XSelectionClearEvent *) re; - ev->window = event->u.selectionClear.window; - ev->selection = event->u.selectionClear.atom; - ev->time = event->u.selectionClear.time; - } - break; - case SelectionRequest: - { - register XSelectionRequestEvent *ev = - (XSelectionRequestEvent *) re; - ev->owner = event->u.selectionRequest.owner; - ev->requestor = event->u.selectionRequest.requestor; - ev->selection = event->u.selectionRequest.selection; - ev->target = event->u.selectionRequest.target; - ev->property = event->u.selectionRequest.property; - ev->time = event->u.selectionRequest.time; - } - break; - case SelectionNotify: - { - register XSelectionEvent *ev = (XSelectionEvent *) re; - ev->requestor = event->u.selectionNotify.requestor; - ev->selection = event->u.selectionNotify.selection; - ev->target = event->u.selectionNotify.target; - ev->property = event->u.selectionNotify.property; - ev->time = event->u.selectionNotify.time; - } - break; - case ColormapNotify: - { - register XColormapEvent *ev = (XColormapEvent *) re; - ev->window = event->u.colormap.window; - ev->colormap = event->u.colormap.colormap; - ev->new = event->u.colormap.new; - ev->state = event->u.colormap.state; - } - break; - case ClientMessage: - { - register int i; - register XClientMessageEvent *ev - = (XClientMessageEvent *) re; - ev->window = event->u.clientMessage.window; - ev->format = event->u.u.detail; - switch (ev->format) { - case 8: - ev->message_type = event->u.clientMessage.u.b.type; - for (i = 0; i < 20; i++) - ev->data.b[i] = event->u.clientMessage.u.b.bytes[i]; - break; - case 16: - ev->message_type = event->u.clientMessage.u.s.type; - ev->data.s[0] = cvtINT16toShort(event->u.clientMessage.u.s.shorts0); - ev->data.s[1] = cvtINT16toShort(event->u.clientMessage.u.s.shorts1); - ev->data.s[2] = cvtINT16toShort(event->u.clientMessage.u.s.shorts2); - ev->data.s[3] = cvtINT16toShort(event->u.clientMessage.u.s.shorts3); - ev->data.s[4] = cvtINT16toShort(event->u.clientMessage.u.s.shorts4); - ev->data.s[5] = cvtINT16toShort(event->u.clientMessage.u.s.shorts5); - ev->data.s[6] = cvtINT16toShort(event->u.clientMessage.u.s.shorts6); - ev->data.s[7] = cvtINT16toShort(event->u.clientMessage.u.s.shorts7); - ev->data.s[8] = cvtINT16toShort(event->u.clientMessage.u.s.shorts8); - ev->data.s[9] = cvtINT16toShort(event->u.clientMessage.u.s.shorts9); - break; - case 32: - ev->message_type = event->u.clientMessage.u.l.type; - ev->data.l[0] = cvtINT32toLong(event->u.clientMessage.u.l.longs0); - ev->data.l[1] = cvtINT32toLong(event->u.clientMessage.u.l.longs1); - ev->data.l[2] = cvtINT32toLong(event->u.clientMessage.u.l.longs2); - ev->data.l[3] = cvtINT32toLong(event->u.clientMessage.u.l.longs3); - ev->data.l[4] = cvtINT32toLong(event->u.clientMessage.u.l.longs4); - break; - default: /* XXX should never occur */ - break; - } - } - break; - case MappingNotify: - { - register XMappingEvent *ev = (XMappingEvent *)re; - ev->window = 0; - ev->first_keycode = event->u.mappingNotify.firstKeyCode; - ev->request = event->u.mappingNotify.request; - ev->count = event->u.mappingNotify.count; - } - break; - default: - return(_XUnknownWireEvent(dpy, re, event)); - } - return(True); -} - - -/* - * _XDefaultIOError - Default fatal system error reporting routine. Called - * when an X internal system error is encountered. - */ -int _XDefaultIOError( - Display *dpy) -{ - if (ECHECK(EPIPE)) { - (void) fprintf (stderr, - "X connection to %s broken (explicit kill or server shutdown).\r\n", - DisplayString (dpy)); - } else { - (void) fprintf (stderr, - "XIO: fatal IO error %d (%s) on X server \"%s\"\r\n", -#ifdef WIN32 - WSAGetLastError(), strerror(WSAGetLastError()), -#else - errno, strerror (errno), -#endif - DisplayString (dpy)); - (void) fprintf (stderr, - " after %lu requests (%lu known processed) with %d events remaining.\r\n", - NextRequest(dpy) - 1, LastKnownRequestProcessed(dpy), - QLength(dpy)); - - } - exit(1); - return(0); /* dummy - function should never return */ -} - - -static int _XPrintDefaultError( - Display *dpy, - XErrorEvent *event, - FILE *fp) -{ - char buffer[BUFSIZ]; - char mesg[BUFSIZ]; - char number[32]; - const char *mtype = "XlibMessage"; - register _XExtension *ext = (_XExtension *)NULL; - _XExtension *bext = (_XExtension *)NULL; - XGetErrorText(dpy, event->error_code, buffer, BUFSIZ); - XGetErrorDatabaseText(dpy, mtype, "XError", "X Error", mesg, BUFSIZ); - (void) fprintf(fp, "%s: %s\n ", mesg, buffer); - XGetErrorDatabaseText(dpy, mtype, "MajorCode", "Request Major code %d", - mesg, BUFSIZ); - (void) fprintf(fp, mesg, event->request_code); - if (event->request_code < 128) { - sprintf(number, "%d", event->request_code); - XGetErrorDatabaseText(dpy, "XRequest", number, "", buffer, BUFSIZ); - } else { - for (ext = dpy->ext_procs; - ext && (ext->codes.major_opcode != event->request_code); - ext = ext->next) - ; - if (ext) - strcpy(buffer, ext->name); - else - buffer[0] = '\0'; - } - (void) fprintf(fp, " (%s)\n", buffer); - if (event->request_code >= 128) { - XGetErrorDatabaseText(dpy, mtype, "MinorCode", "Request Minor code %d", - mesg, BUFSIZ); - fputs(" ", fp); - (void) fprintf(fp, mesg, event->minor_code); - if (ext) { - sprintf(mesg, "%s.%d", ext->name, event->minor_code); - XGetErrorDatabaseText(dpy, "XRequest", mesg, "", buffer, BUFSIZ); - (void) fprintf(fp, " (%s)", buffer); - } - fputs("\n", fp); - } - if (event->error_code >= 128) { - /* kludge, try to find the extension that caused it */ - buffer[0] = '\0'; - for (ext = dpy->ext_procs; ext; ext = ext->next) { - if (ext->error_string) - (*ext->error_string)(dpy, event->error_code, &ext->codes, - buffer, BUFSIZ); - if (buffer[0]) { - bext = ext; - break; - } - if (ext->codes.first_error && - ext->codes.first_error < (int)event->error_code && - (!bext || ext->codes.first_error > bext->codes.first_error)) - bext = ext; - } - if (bext) - sprintf(buffer, "%s.%d", bext->name, - event->error_code - bext->codes.first_error); - else - strcpy(buffer, "Value"); - XGetErrorDatabaseText(dpy, mtype, buffer, "", mesg, BUFSIZ); - if (mesg[0]) { - fputs(" ", fp); - (void) fprintf(fp, mesg, event->resourceid); - fputs("\n", fp); - } - /* let extensions try to print the values */ - for (ext = dpy->ext_procs; ext; ext = ext->next) { - if (ext->error_values) - (*ext->error_values)(dpy, event, fp); - } - } else if ((event->error_code == BadWindow) || - (event->error_code == BadPixmap) || - (event->error_code == BadCursor) || - (event->error_code == BadFont) || - (event->error_code == BadDrawable) || - (event->error_code == BadColor) || - (event->error_code == BadGC) || - (event->error_code == BadIDChoice) || - (event->error_code == BadValue) || - (event->error_code == BadAtom)) { - if (event->error_code == BadValue) - XGetErrorDatabaseText(dpy, mtype, "Value", "Value 0x%x", - mesg, BUFSIZ); - else if (event->error_code == BadAtom) - XGetErrorDatabaseText(dpy, mtype, "AtomID", "AtomID 0x%x", - mesg, BUFSIZ); - else - XGetErrorDatabaseText(dpy, mtype, "ResourceID", "ResourceID 0x%x", - mesg, BUFSIZ); - fputs(" ", fp); - (void) fprintf(fp, mesg, event->resourceid); - fputs("\n", fp); - } - XGetErrorDatabaseText(dpy, mtype, "ErrorSerial", "Error Serial #%d", - mesg, BUFSIZ); - fputs(" ", fp); - (void) fprintf(fp, mesg, event->serial); - XGetErrorDatabaseText(dpy, mtype, "CurrentSerial", "Current Serial #%d", - mesg, BUFSIZ); - fputs("\n ", fp); - (void) fprintf(fp, mesg, dpy->request); - fputs("\n", fp); - if (event->error_code == BadImplementation) return 0; - return 1; -} - -int _XDefaultError( - Display *dpy, - XErrorEvent *event) -{ - if (_XPrintDefaultError (dpy, event, stderr) == 0) return 0; - exit(1); - /*NOTREACHED*/ -} - -/*ARGSUSED*/ -Bool _XDefaultWireError(Display *display, XErrorEvent *he, xError *we) -{ - return True; -} - -/* - * _XError - upcall internal or user protocol error handler - */ -int _XError ( - Display *dpy, - register xError *rep) -{ - /* - * X_Error packet encountered! We need to unpack the error before - * giving it to the user. - */ - XEvent event; /* make it a large event */ - register _XAsyncHandler *async, *next; - - event.xerror.serial = _XSetLastRequestRead(dpy, (xGenericReply *)rep); - - for (async = dpy->async_handlers; async; async = next) { - next = async->next; - if ((*async->handler)(dpy, (xReply *)rep, - (char *)rep, SIZEOF(xError), async->data)) - return 0; - } - - event.xerror.display = dpy; - event.xerror.type = X_Error; - event.xerror.resourceid = rep->resourceID; - event.xerror.error_code = rep->errorCode; - event.xerror.request_code = rep->majorCode; - event.xerror.minor_code = rep->minorCode; - if (dpy->error_vec && - !(*dpy->error_vec[rep->errorCode])(dpy, &event.xerror, rep)) - return 0; - if (_XErrorFunction != NULL) { - int rtn_val; -#if defined(XTHREADS) && !USE_XCB - if (dpy->lock) - (*dpy->lock->user_lock_display)(dpy); - UnlockDisplay(dpy); -#endif /* XTHREADS && !USE_XCB */ - rtn_val = (*_XErrorFunction)(dpy, (XErrorEvent *)&event); /* upcall */ -#if defined(XTHREADS) && !USE_XCB - LockDisplay(dpy); - if (dpy->lock) - (*dpy->lock->user_unlock_display)(dpy); -#endif /* XTHREADS && !USE_XCB */ - return rtn_val; - } else { - return _XDefaultError(dpy, (XErrorEvent *)&event); - } -} - -/* - * _XIOError - call user connection error handler and exit - */ -int -_XIOError ( - Display *dpy) -{ - dpy->flags |= XlibDisplayIOError; -#ifdef WIN32 - errno = WSAGetLastError(); -#endif - - /* This assumes that the thread calling exit will call any atexit handlers. - * If this does not hold, then an alternate solution would involve - * registering an atexit handler to take over the lock, which would only - * assume that the same thread calls all the atexit handlers. */ -#ifdef XTHREADS - if (dpy->lock) - (*dpy->lock->user_lock_display)(dpy); -#endif - UnlockDisplay(dpy); - - if (_XIOErrorFunction != NULL) - (*_XIOErrorFunction)(dpy); - else - _XDefaultIOError(dpy); - exit (1); - return 0; -} - - -/* - * This routine can be used to (cheaply) get some memory within a single - * Xlib routine for scratch space. A single buffer is reused each time - * if possible. To be MT safe, you can only call this between a call to - * GetReq* and a call to Data* or _XSend*, or in a context when the thread - * is guaranteed to not unlock the display. - */ -char *_XAllocScratch( - register Display *dpy, - unsigned long nbytes) -{ - if (nbytes > dpy->scratch_length) { - if (dpy->scratch_buffer) Xfree (dpy->scratch_buffer); - if ((dpy->scratch_buffer = Xmalloc((unsigned) nbytes))) - dpy->scratch_length = nbytes; - else dpy->scratch_length = 0; - } - return (dpy->scratch_buffer); -} - -/* - * Scratch space allocator you can call any time, multiple times, and be - * MT safe, but you must hand the buffer back with _XFreeTemp. - */ -char *_XAllocTemp( - register Display *dpy, - unsigned long nbytes) -{ - char *buf; - - buf = _XAllocScratch(dpy, nbytes); - dpy->scratch_buffer = NULL; - dpy->scratch_length = 0; - return buf; -} - -void _XFreeTemp( - register Display *dpy, - char *buf, - unsigned long nbytes) -{ - if (dpy->scratch_buffer) - Xfree(dpy->scratch_buffer); - dpy->scratch_buffer = buf; - dpy->scratch_length = nbytes; -} - -/* - * Given a visual id, find the visual structure for this id on this display. - */ -Visual *_XVIDtoVisual( - Display *dpy, - VisualID id) -{ - register int i, j, k; - register Screen *sp; - register Depth *dp; - register Visual *vp; - for (i = 0; i < dpy->nscreens; i++) { - sp = &dpy->screens[i]; - for (j = 0; j < sp->ndepths; j++) { - dp = &sp->depths[j]; - /* if nvisuals == 0 then visuals will be NULL */ - for (k = 0; k < dp->nvisuals; k++) { - vp = &dp->visuals[k]; - if (vp->visualid == id) return (vp); - } - } - } - return (NULL); -} - -int -XFree (void *data) -{ - Xfree (data); - return 1; -} - -#ifdef _XNEEDBCOPYFUNC -void _Xbcopy(b1, b2, length) - register char *b1, *b2; - register length; -{ - if (b1 < b2) { - b2 += length; - b1 += length; - while (length--) - *--b2 = *--b1; - } else { - while (length--) - *b2++ = *b1++; - } -} -#endif - -#ifdef DataRoutineIsProcedure -void Data( - Display *dpy, - char *data, - long len) -{ - if (dpy->bufptr + (len) <= dpy->bufmax) { - memcpy(dpy->bufptr, data, (int)len); - dpy->bufptr += ((len) + 3) & ~3; - } else { - _XSend(dpy, data, len); - } -} -#endif /* DataRoutineIsProcedure */ - - -#ifdef LONG64 -int -_XData32( - Display *dpy, - register long *data, - unsigned len) -{ - register int *buf; - register long i; - - while (len) { - buf = (int *)dpy->bufptr; - i = dpy->bufmax - (char *)buf; - if (!i) { - _XFlush(dpy); - continue; - } - if (len < i) - i = len; - dpy->bufptr = (char *)buf + i; - len -= i; - i >>= 2; - while (--i >= 0) - *buf++ = *data++; - } - return 0; -} -#endif /* LONG64 */ - -#ifdef WORD64 - -/* - * XXX This is a *really* stupid way of doing this. It should just use - * dpy->bufptr directly, taking into account where in the word it is. - */ - -/* - * Data16 - Place 16 bit data in the buffer. - * - * "dpy" is a pointer to a Display. - * "data" is a pointer to the data. - * "len" is the length in bytes of the data. - */ - -static doData16( - register Display *dpy, - short *data, - unsigned len, - char *packbuffer) -{ - long *lp,*lpack; - long i, nwords,bits; - long mask16 = 0x000000000000ffff; - - lp = (long *)data; - lpack = (long *)packbuffer; - -/* nwords is the number of 16 bit values to be packed, - * the low order 16 bits of each word will be packed - * into 64 bit words - */ - nwords = len >> 1; - bits = 48; - - for(i=0;i<nwords;i++){ - if (bits == 48) *lpack = 0; - *lpack ^= (*lp & mask16) << bits; - bits -= 16 ; - lp++; - if(bits < 0){ - lpack++; - bits = 48; - } - } - Data(dpy, packbuffer, len); -} - -_XData16 ( - Display *dpy, - short *data, - unsigned len) -{ - char packbuffer[PACKBUFFERSIZE]; - unsigned nunits = PACKBUFFERSIZE >> 1; - - for (; len > PACKBUFFERSIZE; len -= PACKBUFFERSIZE, data += nunits) { - doData16 (dpy, data, PACKBUFFERSIZE, packbuffer); - } - if (len) doData16 (dpy, data, len, packbuffer); -} - -/* - * Data32 - Place 32 bit data in the buffer. - * - * "dpy" is a pointer to a Display. - * "data" is a pointer to the data. - * "len" is the length in bytes of the data. - */ - -static doData32( - register Display *dpy - long *data, - unsigned len, - char *packbuffer) -{ - long *lp,*lpack; - long i,bits,nwords; - long mask32 = 0x00000000ffffffff; - - lpack = (long *) packbuffer; - lp = data; - -/* nwords is the number of 32 bit values to be packed - * the low order 32 bits of each word will be packed - * into 64 bit words - */ - nwords = len >> 2; - bits = 32; - - for(i=0;i<nwords;i++){ - if (bits == 32) *lpack = 0; - *lpack ^= (*lp & mask32) << bits; - bits = bits ^32; - lp++; - if(bits) - lpack++; - } - Data(dpy, packbuffer, len); -} - -void _XData32( - Display *dpy, - long *data, - unsigned len) -{ - char packbuffer[PACKBUFFERSIZE]; - unsigned nunits = PACKBUFFERSIZE >> 2; - - for (; len > PACKBUFFERSIZE; len -= PACKBUFFERSIZE, data += nunits) { - doData32 (dpy, data, PACKBUFFERSIZE, packbuffer); - } - if (len) doData32 (dpy, data, len, packbuffer); -} - -#endif /* WORD64 */ - - -/* Make sure this produces the same string as DefineLocal/DefineSelf in xdm. - * Otherwise, Xau will not be able to find your cookies in the Xauthority file. - * - * Note: POSIX says that the ``nodename'' member of utsname does _not_ have - * to have sufficient information for interfacing to the network, - * and so, you may be better off using gethostname (if it exists). - */ - -#if (defined(_POSIX_SOURCE) && !defined(AIXV3) && !defined(__QNX__)) || defined(hpux) || defined(SVR4) -#define NEED_UTSNAME -#include <sys/utsname.h> -#endif - -/* - * _XGetHostname - similar to gethostname but allows special processing. - */ -int _XGetHostname ( - char *buf, - int maxlen) -{ - int len; - -#ifdef NEED_UTSNAME - struct utsname name; - - if (maxlen <= 0 || buf == NULL) - return 0; - - uname (&name); - len = strlen (name.nodename); - if (len >= maxlen) len = maxlen - 1; - strncpy (buf, name.nodename, len); - buf[len] = '\0'; -#else - if (maxlen <= 0 || buf == NULL) - return 0; - - buf[0] = '\0'; - (void) gethostname (buf, maxlen); - buf [maxlen - 1] = '\0'; - len = strlen(buf); -#endif /* NEED_UTSNAME */ - return len; -} - - -/* - * _XScreenOfWindow - get the Screen of a given window - */ - -Screen *_XScreenOfWindow(Display *dpy, Window w) -{ - register int i; - Window root; - int x, y; /* dummy variables */ - unsigned int width, height, bw, depth; /* dummy variables */ - - if (XGetGeometry (dpy, w, &root, &x, &y, &width, &height, - &bw, &depth) == False) { - return NULL; - } - for (i = 0; i < ScreenCount (dpy); i++) { /* find root from list */ - if (root == RootWindow (dpy, i)) { - return ScreenOfDisplay (dpy, i); - } - } - return NULL; -} - - -#if defined(WIN32) - -/* - * These functions are intended to be used internally to Xlib only. - * These functions will always prefix the path with a DOS drive in the - * form "<drive-letter>:". As such, these functions are only suitable - * for use by Xlib function that supply a root-based path to some - * particular file, e.g. <ProjectRoot>/lib/X11/locale/locale.dir will - * be converted to "C:/usr/X11R6.3/lib/X11/locale/locale.dir". - */ - -static int access_file (path, pathbuf, len_pathbuf, pathret) - char* path; - char* pathbuf; - int len_pathbuf; - char** pathret; -{ - if (access (path, F_OK) == 0) { - if (strlen (path) < len_pathbuf) - *pathret = pathbuf; - else - *pathret = Xmalloc (strlen (path) + 1); - if (*pathret) { - strcpy (*pathret, path); - return 1; - } - } - return 0; -} - -static int AccessFile (path, pathbuf, len_pathbuf, pathret) - char* path; - char* pathbuf; - int len_pathbuf; - char** pathret; -{ - unsigned long drives; - int i, len; - char* drive; - char buf[MAX_PATH]; - char* bufp; - - /* just try the "raw" name first and see if it works */ - if (access_file (path, pathbuf, len_pathbuf, pathret)) - return 1; - - /* try the places set in the environment */ - drive = getenv ("_XBASEDRIVE"); -#ifdef __UNIXOS2__ - if (!drive) - drive = getenv ("X11ROOT"); -#endif - if (!drive) - drive = "C:"; - len = strlen (drive) + strlen (path); - if (len < MAX_PATH) bufp = buf; - else bufp = Xmalloc (len + 1); - strcpy (bufp, drive); - strcat (bufp, path); - if (access_file (bufp, pathbuf, len_pathbuf, pathret)) { - if (bufp != buf) Xfree (bufp); - return 1; - } - -#ifndef __UNIXOS2__ - /* one last place to look */ - drive = getenv ("HOMEDRIVE"); - if (drive) { - len = strlen (drive) + strlen (path); - if (len < MAX_PATH) bufp = buf; - else bufp = Xmalloc (len + 1); - strcpy (bufp, drive); - strcat (bufp, path); - if (access_file (bufp, pathbuf, len_pathbuf, pathret)) { - if (bufp != buf) Xfree (bufp); - return 1; - } - } - - /* tried everywhere else, go fishing */ -#define C_DRIVE ('C' - 'A') -#define Z_DRIVE ('Z' - 'A') - /* does OS/2 (with or with gcc-emx) have getdrives? */ - drives = _getdrives (); - for (i = C_DRIVE; i <= Z_DRIVE; i++) { /* don't check on A: or B: */ - if ((1 << i) & drives) { - len = 2 + strlen (path); - if (len < MAX_PATH) bufp = buf; - else bufp = Xmalloc (len + 1); - *bufp = 'A' + i; - *(bufp + 1) = ':'; - *(bufp + 2) = '\0'; - strcat (bufp, path); - if (access_file (bufp, pathbuf, len_pathbuf, pathret)) { - if (bufp != buf) Xfree (bufp); - return 1; - } - } - } -#endif - return 0; -} - -int _XOpenFile(path, flags) - _Xconst char* path; - int flags; -{ - char buf[MAX_PATH]; - char* bufp = NULL; - int ret = -1; - UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS); - - if (AccessFile (path, buf, MAX_PATH, &bufp)) - ret = open (bufp, flags); - - (void) SetErrorMode (olderror); - - if (bufp != buf) Xfree (bufp); - - return ret; -} - -int _XOpenFileMode(path, flags, mode) - _Xconst char* path; - int flags; - mode_t mode; -{ - char buf[MAX_PATH]; - char* bufp = NULL; - int ret = -1; - UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS); - - if (AccessFile (path, buf, MAX_PATH, &bufp)) - ret = open (bufp, flags, mode); - - (void) SetErrorMode (olderror); - - if (bufp != buf) Xfree (bufp); - - return ret; -} - -void* _XFopenFile(path, mode) - _Xconst char* path; - _Xconst char* mode; -{ - char buf[MAX_PATH]; - char* bufp = NULL; - void* ret = NULL; - UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS); - - if (AccessFile (path, buf, MAX_PATH, &bufp)) - ret = fopen (bufp, mode); - - (void) SetErrorMode (olderror); - - if (bufp != buf) Xfree (bufp); - - return ret; -} - -int _XAccessFile(path) - _Xconst char* path; -{ - char buf[MAX_PATH]; - char* bufp; - int ret = -1; - UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS); - - ret = AccessFile (path, buf, MAX_PATH, &bufp); - - (void) SetErrorMode (olderror); - - if (bufp != buf) Xfree (bufp); - - return ret; -} - -#endif - -#ifdef WIN32 -#undef _Xdebug -int _Xdebug = 0; -int *_Xdebug_p = &_Xdebug; -void (**_XCreateMutex_fn_p)(LockInfoPtr) = &_XCreateMutex_fn; -void (**_XFreeMutex_fn_p)(LockInfoPtr) = &_XFreeMutex_fn; -void (**_XLockMutex_fn_p)(LockInfoPtr -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) - , char * /* file */ - , int /* line */ -#endif - ) = &_XLockMutex_fn; -void (**_XUnlockMutex_fn_p)(LockInfoPtr -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) - , char * /* file */ - , int /* line */ -#endif - ) = &_XUnlockMutex_fn; -LockInfoPtr *_Xglobal_lock_p = &_Xglobal_lock; -#endif +/*
+
+Copyright 1985, 1986, 1987, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+/*
+ * XlibInt.c - Internal support routines for the C subroutine
+ * interface library (Xlib) to the X Window System Protocol V11.0.
+ */
+#define NEED_EVENTS
+#define NEED_REPLIES
+
+#ifdef WIN32
+#define _XLIBINT_
+#endif
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include "Xprivate.h"
+#include <X11/Xpoll.h>
+#if !USE_XCB
+#include <X11/Xtrans/Xtrans.h>
+#include <X11/extensions/xcmiscstr.h>
+#endif /* !USE_XCB */
+#include <assert.h>
+#include <stdio.h>
+#ifdef WIN32
+#include <direct.h>
+#endif
+
+#ifdef XTHREADS
+#include "locking.h"
+
+/* these pointers get initialized by XInitThreads */
+LockInfoPtr _Xglobal_lock = NULL;
+void (*_XCreateMutex_fn)(LockInfoPtr) = NULL;
+/* struct _XCVList *(*_XCreateCVL_fn)() = NULL; */
+void (*_XFreeMutex_fn)(LockInfoPtr) = NULL;
+void (*_XLockMutex_fn)(
+ LockInfoPtr /* lock */
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+ , char * /* file */
+ , int /* line */
+#endif
+ ) = NULL;
+void (*_XUnlockMutex_fn)(
+ LockInfoPtr /* lock */
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+ , char * /* file */
+ , int /* line */
+#endif
+ ) = NULL;
+xthread_t (*_Xthread_self_fn)(void) = NULL;
+
+#define XThread_Self() ((*_Xthread_self_fn)())
+
+#if !USE_XCB
+#define UnlockNextReplyReader(d) if ((d)->lock) \
+ (*(d)->lock->pop_reader)((d),&(d)->lock->reply_awaiters,&(d)->lock->reply_awaiters_tail)
+
+#define QueueReplyReaderLock(d) ((d)->lock ? \
+ (*(d)->lock->push_reader)(d,&(d)->lock->reply_awaiters_tail) : NULL)
+#define QueueEventReaderLock(d) ((d)->lock ? \
+ (*(d)->lock->push_reader)(d,&(d)->lock->event_awaiters_tail) : NULL)
+#endif /* !USE_XCB */
+
+#else /* XTHREADS else */
+
+#if !USE_XCB
+#define UnlockNextReplyReader(d)
+#define UnlockNextEventReader(d)
+#endif /* !USE_XCB */
+
+#endif /* XTHREADS else */
+
+/* check for both EAGAIN and EWOULDBLOCK, because some supposedly POSIX
+ * systems are broken and return EWOULDBLOCK when they should return EAGAIN
+ */
+#ifdef WIN32
+#define ETEST() (WSAGetLastError() == WSAEWOULDBLOCK)
+#else
+#ifdef __CYGWIN__ /* Cygwin uses ENOBUFS to signal socket is full */
+#define ETEST() (errno == EAGAIN || errno == EWOULDBLOCK || errno == ENOBUFS)
+#else
+#if defined(EAGAIN) && defined(EWOULDBLOCK)
+#define ETEST() (errno == EAGAIN || errno == EWOULDBLOCK)
+#else
+#ifdef EAGAIN
+#define ETEST() (errno == EAGAIN)
+#else
+#define ETEST() (errno == EWOULDBLOCK)
+#endif /* EAGAIN */
+#endif /* EAGAIN && EWOULDBLOCK */
+#endif /* __CYGWIN__ */
+#endif /* WIN32 */
+
+#ifdef WIN32
+#define ECHECK(err) (WSAGetLastError() == err)
+#define ESET(val) WSASetLastError(val)
+#else
+#ifdef __UNIXOS2__
+#define ECHECK(err) (errno == err)
+#define ESET(val)
+#else
+#define ECHECK(err) (errno == err)
+#define ESET(val) errno = val
+#endif
+#endif
+
+#if defined(LOCALCONN) || defined(LACHMAN)
+#ifdef EMSGSIZE
+#define ESZTEST() (ECHECK(EMSGSIZE) || ECHECK(ERANGE))
+#else
+#define ESZTEST() ECHECK(ERANGE)
+#endif
+#else
+#ifdef EMSGSIZE
+#define ESZTEST() ECHECK(EMSGSIZE)
+#endif
+#endif
+
+#ifdef __UNIXOS2__
+#if !USE_XCB
+#define select(n,r,w,x,t) os2ClientSelect(n,r,w,x,t)
+#endif /* !USE_XCB */
+#include <limits.h>
+#define MAX_PATH _POSIX_PATH_MAX
+#endif
+
+#if !USE_XCB
+#ifdef MUSTCOPY
+
+#define STARTITERATE(tpvar,type,start,endcond) \
+ { register char *cpvar; \
+ for (cpvar = (char *) (start); endcond; ) { \
+ type dummy; memcpy ((char *) &dummy, cpvar, SIZEOF(type)); \
+ tpvar = &dummy;
+#define ITERPTR(tpvar) cpvar
+#define RESETITERPTR(tpvar,type,start) cpvar = start
+#define INCITERPTR(tpvar,type) cpvar += SIZEOF(type)
+#define ENDITERATE }}
+
+#else
+
+#define STARTITERATE(tpvar,type,start,endcond) \
+ for (tpvar = (type *) (start); endcond; )
+#define ITERPTR(tpvar) (char *)tpvar
+#define RESETITERPTR(tpvar,type,start) tpvar = (type *) (start)
+#define INCITERPTR(tpvar,type) tpvar++
+#define ENDITERATE
+
+#endif /* MUSTCOPY */
+
+typedef union {
+ xReply rep;
+ char buf[BUFSIZE];
+} _XAlignedBuffer;
+
+static char *_XAsyncReply(
+ Display *dpy,
+ register xReply *rep,
+ char *buf,
+ register int *lenp,
+ Bool discard);
+#endif /* !USE_XCB */
+
+/*
+ * The following routines are internal routines used by Xlib for protocol
+ * packet transmission and reception.
+ *
+ * _XIOError(Display *) will be called if any sort of system call error occurs.
+ * This is assumed to be a fatal condition, i.e., XIOError should not return.
+ *
+ * _XError(Display *, xError *) will be called whenever an X_Error event is
+ * received. This is not assumed to be a fatal condition, i.e., it is
+ * acceptable for this procedure to return. However, XError should NOT
+ * perform any operations (directly or indirectly) on the DISPLAY.
+ *
+ * Routines declared with a return type of 'Status' return 0 on failure,
+ * and non 0 on success. Routines with no declared return type don't
+ * return anything. Whenever possible routines that create objects return
+ * the object they have created.
+ */
+
+#if !USE_XCB
+static xReq _dummy_request = {
+ 0, 0, 0
+};
+
+/*
+ * This is an OS dependent routine which:
+ * 1) returns as soon as the connection can be written on....
+ * 2) if the connection can be read, must enqueue events and handle errors,
+ * until the connection is writable.
+ */
+static void
+_XWaitForWritable(
+ Display *dpy
+#ifdef XTHREADS
+ ,
+ xcondition_t cv /* our reading condition variable */
+#endif
+ )
+{
+#ifdef USE_POLL
+ struct pollfd filedes;
+#else
+ fd_set r_mask;
+ fd_set w_mask;
+#endif
+ int nfound;
+
+#ifdef USE_POLL
+ filedes.fd = dpy->fd;
+ filedes.events = 0;
+#else
+ FD_ZERO(&r_mask);
+ FD_ZERO(&w_mask);
+#endif
+
+ for (;;) {
+#ifdef XTHREADS
+ /* We allow only one thread at a time to read, to minimize
+ passing of read data between threads.
+ Now, who is it? If there is a non-NULL reply_awaiters and
+ we (i.e., our cv) are not at the head of it, then whoever
+ is at the head is the reader, and we don't read.
+ Otherwise there is no reply_awaiters or we are at the
+ head, having just appended ourselves.
+ In this case, if there is a event_awaiters, then whoever
+ is at the head of it got there before we did, and they are the
+ reader.
+
+ Last cases: no event_awaiters and we are at the head of
+ reply_awaiters or reply_awaiters is NULL: we are the reader,
+ since there is obviously no one else involved.
+
+ XXX - what if cv is NULL and someone else comes along after
+ us while we are waiting?
+ */
+
+ if (!dpy->lock ||
+ (!dpy->lock->event_awaiters &&
+ (!dpy->lock->reply_awaiters ||
+ dpy->lock->reply_awaiters->cv == cv)))
+#endif
+#ifdef USE_POLL
+ filedes.events = POLLIN;
+ filedes.events |= POLLOUT;
+#else
+ FD_SET(dpy->fd, &r_mask);
+ FD_SET(dpy->fd, &w_mask);
+#endif
+
+ do {
+ UnlockDisplay(dpy);
+#ifdef USE_POLL
+ nfound = poll (&filedes, 1, -1);
+#else
+ nfound = Select (dpy->fd + 1, &r_mask, &w_mask, NULL, NULL);
+#endif
+ InternalLockDisplay(dpy, cv != NULL);
+ if (nfound < 0 && !(ECHECK(EINTR) || ETEST()))
+ _XIOError(dpy);
+ } while (nfound <= 0);
+
+ if (
+#ifdef USE_POLL
+ filedes.revents & POLLIN
+#else
+ FD_ISSET(dpy->fd, &r_mask)
+#endif
+ )
+ {
+ _XAlignedBuffer buf;
+ BytesReadable_t pend;
+ register int len;
+ register xReply *rep;
+
+ /* find out how much data can be read */
+ if (_X11TransBytesReadable(dpy->trans_conn, &pend) < 0)
+ _XIOError(dpy);
+ len = pend;
+
+ /* must read at least one xEvent; if none is pending, then
+ we'll just block waiting for it */
+ if (len < SIZEOF(xReply)
+#ifdef XTHREADS
+ || dpy->async_handlers
+#endif
+ )
+ len = SIZEOF(xReply);
+
+ /* but we won't read more than the max buffer size */
+ if (len > BUFSIZE) len = BUFSIZE;
+
+ /* round down to an integral number of XReps */
+ len = (len / SIZEOF(xReply)) * SIZEOF(xReply);
+
+ (void) _XRead (dpy, buf.buf, (long) len);
+
+ STARTITERATE(rep,xReply,buf.buf,len > 0) {
+ if (rep->generic.type == X_Reply) {
+ int tmp = len;
+ RESETITERPTR(rep,xReply,
+ _XAsyncReply (dpy, rep,
+ ITERPTR(rep), &tmp, True));
+ len = tmp;
+ pend = len;
+ } else {
+ if (rep->generic.type == X_Error)
+ _XError (dpy, (xError *)rep);
+ else /* must be an event packet */
+ _XEnq (dpy, (xEvent *)rep);
+ INCITERPTR(rep,xReply);
+ len -= SIZEOF(xReply);
+ }
+ } ENDITERATE
+#ifdef XTHREADS
+ if (dpy->lock && dpy->lock->event_awaiters)
+ ConditionSignal(dpy, dpy->lock->event_awaiters->cv);
+#endif
+ }
+#ifdef USE_POLL
+ if (filedes.revents & (POLLOUT|POLLHUP|POLLERR))
+#else
+ if (FD_ISSET(dpy->fd, &w_mask))
+#endif
+ {
+#ifdef XTHREADS
+ if (dpy->lock) {
+ ConditionBroadcast(dpy, dpy->lock->writers);
+ }
+#endif
+ return;
+ }
+ }
+}
+#endif /* !USE_XCB */
+
+
+#define POLLFD_CACHE_SIZE 5
+
+/* initialize the struct array passed to poll() below */
+Bool _XPollfdCacheInit(
+ Display *dpy)
+{
+#ifdef USE_POLL
+ struct pollfd *pfp;
+
+ pfp = (struct pollfd *)Xmalloc(POLLFD_CACHE_SIZE * sizeof(struct pollfd));
+ if (!pfp)
+ return False;
+ pfp[0].fd = dpy->fd;
+ pfp[0].events = POLLIN;
+
+ dpy->filedes = (XPointer)pfp;
+#endif
+ return True;
+}
+
+void _XPollfdCacheAdd(
+ Display *dpy,
+ int fd)
+{
+#ifdef USE_POLL
+ struct pollfd *pfp = (struct pollfd *)dpy->filedes;
+
+ if (dpy->im_fd_length <= POLLFD_CACHE_SIZE) {
+ pfp[dpy->im_fd_length].fd = fd;
+ pfp[dpy->im_fd_length].events = POLLIN;
+ }
+#endif
+}
+
+/* ARGSUSED */
+void _XPollfdCacheDel(
+ Display *dpy,
+ int fd) /* not used */
+{
+#ifdef USE_POLL
+ struct pollfd *pfp = (struct pollfd *)dpy->filedes;
+ struct _XConnectionInfo *conni;
+
+ /* just recalculate whole list */
+ if (dpy->im_fd_length <= POLLFD_CACHE_SIZE) {
+ int loc = 1;
+ for (conni = dpy->im_fd_info; conni; conni=conni->next) {
+ pfp[loc].fd = conni->fd;
+ pfp[loc].events = POLLIN;
+ loc++;
+ }
+ }
+#endif
+}
+
+#if !USE_XCB
+/* returns True iff there is an event in the queue newer than serial_num */
+
+static Bool
+_XNewerQueuedEvent(
+ Display *dpy,
+ int serial_num)
+{
+ _XQEvent *qev;
+
+ if (dpy->next_event_serial_num == serial_num)
+ return False;
+
+ qev = dpy->head;
+ while (qev) {
+ if (qev->qserial_num >= serial_num) {
+ return True;
+ }
+ qev = qev->next;
+ }
+ return False;
+}
+
+static int
+_XWaitForReadable(
+ Display *dpy)
+{
+ int result;
+ int fd = dpy->fd;
+ struct _XConnectionInfo *ilist;
+ register int saved_event_serial = 0;
+ int in_read_events = 0;
+ register Bool did_proc_conni = False;
+#ifdef USE_POLL
+ struct pollfd *filedes;
+#else
+ fd_set r_mask;
+ int highest_fd = fd;
+#endif
+
+#ifdef USE_POLL
+ if (dpy->im_fd_length + 1 > POLLFD_CACHE_SIZE
+ && !(dpy->flags & XlibDisplayProcConni)) {
+ /* XXX - this fallback is gross */
+ int i;
+
+ filedes = (struct pollfd *)Xmalloc(dpy->im_fd_length * sizeof(struct pollfd));
+ filedes[0].fd = fd;
+ filedes[0].events = POLLIN;
+ for (ilist=dpy->im_fd_info, i=1; ilist; ilist=ilist->next, i++) {
+ filedes[i].fd = ilist->fd;
+ filedes[i].events = POLLIN;
+ }
+ } else {
+ filedes = (struct pollfd *)dpy->filedes;
+ }
+#else
+ FD_ZERO(&r_mask);
+#endif
+ for (;;) {
+#ifndef USE_POLL
+ FD_SET(fd, &r_mask);
+ if (!(dpy->flags & XlibDisplayProcConni))
+ for (ilist=dpy->im_fd_info; ilist; ilist=ilist->next) {
+ FD_SET(ilist->fd, &r_mask);
+ if (ilist->fd > highest_fd)
+ highest_fd = ilist->fd;
+ }
+#endif
+ UnlockDisplay(dpy);
+#ifdef USE_POLL
+ result = poll(filedes,
+ (dpy->flags & XlibDisplayProcConni) ? 1 : 1+dpy->im_fd_length,
+ -1);
+#else
+ result = Select(highest_fd + 1, &r_mask, NULL, NULL, NULL);
+#endif
+ InternalLockDisplay(dpy, dpy->flags & XlibDisplayReply);
+ if (result == -1 && !(ECHECK(EINTR) || ETEST())) _XIOError(dpy);
+ if (result <= 0)
+ continue;
+#ifdef USE_POLL
+ if (filedes[0].revents & (POLLIN|POLLHUP|POLLERR))
+#else
+ if (FD_ISSET(fd, &r_mask))
+#endif
+ break;
+ if (!(dpy->flags & XlibDisplayProcConni)) {
+ int i;
+
+ saved_event_serial = dpy->next_event_serial_num;
+ /* dpy flags can be clobbered by internal connection callback */
+ in_read_events = dpy->flags & XlibDisplayReadEvents;
+ for (ilist=dpy->im_fd_info, i=1; ilist; ilist=ilist->next, i++) {
+#ifdef USE_POLL
+ if (filedes[i].revents & POLLIN)
+#else
+ if (FD_ISSET(ilist->fd, &r_mask))
+#endif
+ {
+ _XProcessInternalConnection(dpy, ilist);
+ did_proc_conni = True;
+ }
+ }
+#ifdef USE_POLL
+ if (dpy->im_fd_length + 1 > POLLFD_CACHE_SIZE)
+ Xfree(filedes);
+#endif
+ }
+ if (did_proc_conni) {
+ /* some internal connection callback might have done an
+ XPutBackEvent. We notice it here and if we needed an event,
+ we can return all the way. */
+ if (_XNewerQueuedEvent(dpy, saved_event_serial)
+ && (in_read_events
+#ifdef XTHREADS
+ || (dpy->lock && dpy->lock->event_awaiters)
+#endif
+ ))
+ return -2;
+ did_proc_conni = False;
+ }
+ }
+#ifdef XTHREADS
+#ifdef XTHREADS_DEBUG
+ printf("thread %x _XWaitForReadable returning\n", XThread_Self());
+#endif
+#endif
+ return 0;
+}
+#endif /* !USE_XCB */
+
+static int sync_hazard(Display *dpy)
+{
+ unsigned long span = dpy->request - dpy->last_request_read;
+ unsigned long hazard = min((dpy->bufmax - dpy->buffer) / SIZEOF(xReq), 65535 - 10);
+ return span >= 65535 - hazard - 10;
+}
+
+static
+void sync_while_locked(Display *dpy)
+{
+#ifdef XTHREADS
+ if (dpy->lock)
+ (*dpy->lock->user_lock_display)(dpy);
+#endif
+ UnlockDisplay(dpy);
+ SyncHandle();
+ InternalLockDisplay(dpy, /* don't skip user locks */ 0);
+#ifdef XTHREADS
+ if (dpy->lock)
+ (*dpy->lock->user_unlock_display)(dpy);
+#endif
+}
+
+void _XSeqSyncFunction(
+ register Display *dpy)
+{
+ xGetInputFocusReply rep;
+ register xReq *req;
+
+ if ((dpy->request - dpy->last_request_read) >= (65535 - BUFSIZE/SIZEOF(xReq))) {
+ GetEmptyReq(GetInputFocus, req);
+ (void) _XReply (dpy, (xReply *)&rep, 0, xTrue);
+ sync_while_locked(dpy);
+ } else if (sync_hazard(dpy))
+ _XSetPrivSyncFunction(dpy);
+}
+
+/* NOTE: only called if !XTHREADS, or when XInitThreads wasn't called. */
+static int
+_XPrivSyncFunction (Display *dpy)
+{
+#if XTHREADS
+ assert(!dpy->lock_fns);
+#endif
+ assert(dpy->synchandler == _XPrivSyncFunction);
+ assert((dpy->flags & XlibDisplayPrivSync) != 0);
+ dpy->synchandler = dpy->savedsynchandler;
+ dpy->savedsynchandler = NULL;
+ dpy->flags &= ~XlibDisplayPrivSync;
+ if(dpy->synchandler)
+ dpy->synchandler(dpy);
+ _XIDHandler(dpy);
+ _XSeqSyncFunction(dpy);
+ return 0;
+}
+
+void _XSetPrivSyncFunction(Display *dpy)
+{
+#ifdef XTHREADS
+ if (dpy->lock_fns)
+ return;
+#endif
+ if (!(dpy->flags & XlibDisplayPrivSync)) {
+ dpy->savedsynchandler = dpy->synchandler;
+ dpy->synchandler = _XPrivSyncFunction;
+ dpy->flags |= XlibDisplayPrivSync;
+ }
+}
+
+void _XSetSeqSyncFunction(Display *dpy)
+{
+ if (sync_hazard(dpy))
+ _XSetPrivSyncFunction (dpy);
+}
+
+#if !USE_XCB
+#ifdef XTHREADS
+static void _XFlushInt(
+ register Display *dpy,
+ register xcondition_t cv);
+#endif
+
+/*
+ * _XFlush - Flush the X request buffer. If the buffer is empty, no
+ * action is taken. This routine correctly handles incremental writes.
+ * This routine may have to be reworked if int < long.
+ */
+void _XFlush(
+ register Display *dpy)
+{
+#ifdef XTHREADS
+ /* With multi-threading we introduce an internal routine to which
+ we can pass a condition variable to do locking correctly. */
+
+ _XFlushInt(dpy, NULL);
+}
+
+/* _XFlushInt - Internal version of _XFlush used to do multi-threaded
+ * locking correctly.
+ */
+
+static void _XFlushInt(
+ register Display *dpy,
+ register xcondition_t cv)
+{
+#endif /* XTHREADS*/
+ register long size, todo;
+ register int write_stat;
+ register char *bufindex;
+ _XExtension *ext;
+
+ /* This fix resets the bufptr to the front of the buffer so
+ * additional appends to the bufptr will not corrupt memory. Since
+ * the server is down, these appends are no-op's anyway but
+ * callers of _XFlush() are not verifying this before they call it.
+ */
+ if (dpy->flags & XlibDisplayIOError)
+ {
+ dpy->bufptr = dpy->buffer;
+ dpy->last_req = (char *)&_dummy_request;
+ return;
+ }
+
+#ifdef XTHREADS
+ while (dpy->flags & XlibDisplayWriting) {
+ if (dpy->lock) {
+ ConditionWait(dpy, dpy->lock->writers);
+ } else {
+ _XWaitForWritable (dpy, cv);
+ }
+ }
+#endif
+ size = todo = dpy->bufptr - dpy->buffer;
+ if (!size) return;
+#ifdef XTHREADS
+ dpy->flags |= XlibDisplayWriting;
+ /* make sure no one else can put in data */
+ dpy->bufptr = dpy->bufmax;
+#endif
+ for (ext = dpy->flushes; ext; ext = ext->next_flush)
+ (*ext->before_flush)(dpy, &ext->codes, dpy->buffer, size);
+ bufindex = dpy->buffer;
+ /*
+ * While write has not written the entire buffer, keep looping
+ * until the entire buffer is written. bufindex will be
+ * incremented and size decremented as buffer is written out.
+ */
+ while (size) {
+ ESET(0);
+ write_stat = _X11TransWrite(dpy->trans_conn,
+ bufindex, (int) todo);
+ if (write_stat >= 0) {
+ size -= write_stat;
+ todo = size;
+ bufindex += write_stat;
+ } else if (ETEST()) {
+ _XWaitForWritable(dpy
+#ifdef XTHREADS
+ , cv
+#endif
+ );
+#ifdef SUNSYSV
+ } else if (ECHECK(0)) {
+ _XWaitForWritable(dpy
+#ifdef XTHREADS
+ , cv
+#endif
+ );
+#endif
+#ifdef ESZTEST
+ } else if (ESZTEST()) {
+ if (todo > 1)
+ todo >>= 1;
+ else {
+ _XWaitForWritable(dpy
+#ifdef XTHREADS
+ , cv
+#endif
+ );
+ }
+#endif
+ } else if (!ECHECK(EINTR)) {
+ /* Write failed! */
+ /* errno set by write system call. */
+ _XIOError(dpy);
+ }
+ }
+ dpy->last_req = (char *)&_dummy_request;
+ _XSetSeqSyncFunction(dpy);
+ dpy->bufptr = dpy->buffer;
+#ifdef XTHREADS
+ dpy->flags &= ~XlibDisplayWriting;
+#endif
+}
+
+int
+_XEventsQueued(
+ register Display *dpy,
+ int mode)
+{
+ register int len;
+ BytesReadable_t pend;
+ _XAlignedBuffer buf;
+ register xReply *rep;
+ char *read_buf;
+#ifdef XTHREADS
+ int entry_event_serial_num;
+ struct _XCVList *cvl = NULL;
+ xthread_t self;
+
+#ifdef XTHREADS_DEBUG
+ printf("_XEventsQueued called in thread %x\n", XThread_Self());
+#endif
+#endif /* XTHREADS*/
+
+ if (mode == QueuedAfterFlush)
+ {
+ _XFlush(dpy);
+ if (dpy->qlen)
+ return(dpy->qlen);
+ }
+ if (dpy->flags & XlibDisplayIOError) return(dpy->qlen);
+
+#ifdef XTHREADS
+ /* create our condition variable and append to list,
+ * unless we were called from within XProcessInternalConnection
+ * or XLockDisplay
+ */
+ xthread_clear_id(self);
+ if (dpy->lock && (xthread_have_id (dpy->lock->conni_thread)
+ || xthread_have_id (dpy->lock->locking_thread)))
+ /* some thread is in XProcessInternalConnection or XLockDisplay
+ so we have to see if we are it */
+ self = XThread_Self();
+ if (!xthread_have_id(self)
+ || (!xthread_equal(self, dpy->lock->conni_thread)
+ && !xthread_equal(self, dpy->lock->locking_thread))) {
+ /* In the multi-threaded case, if there is someone else
+ reading events, then there aren't any available, so
+ we just return. If we waited we would block.
+ */
+ if (dpy->lock && dpy->lock->event_awaiters)
+ return dpy->qlen;
+ /* nobody here but us, so lock out any newcomers */
+ cvl = QueueEventReaderLock(dpy);
+ }
+
+ while (dpy->lock && cvl && dpy->lock->reply_first) {
+ /* note which events we have already seen so we'll know
+ if _XReply (in another thread) reads one */
+ entry_event_serial_num = dpy->next_event_serial_num;
+ ConditionWait(dpy, cvl->cv);
+ /* did _XReply read an event we can return? */
+ if (_XNewerQueuedEvent(dpy, entry_event_serial_num))
+ {
+ UnlockNextEventReader(dpy);
+ return 0;
+ }
+ }
+#endif /* XTHREADS*/
+
+ if (_X11TransBytesReadable(dpy->trans_conn, &pend) < 0)
+ _XIOError(dpy);
+#ifdef XCONN_CHECK_FREQ
+ /* This is a crock, required because FIONREAD or equivalent is
+ * not guaranteed to detect a broken connection.
+ */
+ if (!pend && !dpy->qlen && ++dpy->conn_checker >= XCONN_CHECK_FREQ)
+ {
+ int result;
+#ifdef USE_POLL
+ struct pollfd filedes;
+#else
+ fd_set r_mask;
+ static struct timeval zero_time;
+#endif
+
+ dpy->conn_checker = 0;
+#ifdef USE_POLL
+ filedes.fd = dpy->fd;
+ filedes.events = POLLIN;
+ if ((result = poll(&filedes, 1, 0)))
+#else
+ FD_ZERO(&r_mask);
+ FD_SET(dpy->fd, &r_mask);
+ if ((result = Select(dpy->fd + 1, &r_mask, NULL, NULL, &zero_time)))
+#endif
+ {
+ if (result > 0)
+ {
+ if (_X11TransBytesReadable(dpy->trans_conn, &pend) < 0)
+ _XIOError(dpy);
+ /* we should not get zero, if we do, force a read */
+ if (!pend)
+ pend = SIZEOF(xReply);
+ }
+ else if (result < 0 && !(ECHECK(EINTR) || ETEST()))
+ _XIOError(dpy);
+ }
+ }
+#endif /* XCONN_CHECK_FREQ */
+ if (!(len = pend)) {
+ /* _XFlush can enqueue events */
+#ifdef XTHREADS
+ if (cvl)
+#endif
+ {
+ UnlockNextEventReader(dpy);
+ }
+ return(dpy->qlen);
+ }
+ /* Force a read if there is not enough data. Otherwise,
+ * a select() loop at a higher-level will spin undesirably,
+ * and we've seen at least one OS that appears to not update
+ * the result from FIONREAD once it has returned nonzero.
+ */
+#ifdef XTHREADS
+ if (dpy->lock && dpy->lock->reply_awaiters) {
+ read_buf = (char *)dpy->lock->reply_awaiters->buf;
+ len = SIZEOF(xReply);
+ } else
+#endif /* XTHREADS*/
+ {
+ read_buf = buf.buf;
+
+ if (len < SIZEOF(xReply)
+#ifdef XTHREADS
+ || dpy->async_handlers
+#endif
+ )
+ len = SIZEOF(xReply);
+ else if (len > BUFSIZE)
+ len = BUFSIZE;
+ len = (len / SIZEOF(xReply)) * SIZEOF(xReply);
+ }
+#ifdef XCONN_CHECK_FREQ
+ dpy->conn_checker = 0;
+#endif
+
+ (void) _XRead (dpy, read_buf, (long) len);
+
+#ifdef XTHREADS
+ /* what did we actually read: reply or event? */
+ if (dpy->lock && dpy->lock->reply_awaiters) {
+ if (((xReply *)read_buf)->generic.type == X_Reply ||
+ ((xReply *)read_buf)->generic.type == X_Error)
+ {
+ dpy->lock->reply_was_read = True;
+ dpy->lock->reply_first = True;
+ if (read_buf != (char *)dpy->lock->reply_awaiters->buf)
+ memcpy(dpy->lock->reply_awaiters->buf, read_buf,
+ len);
+ if (cvl) {
+ UnlockNextEventReader(dpy);
+ }
+ return(dpy->qlen); /* we read, so we can return */
+ } else if (read_buf != buf.buf)
+ memcpy(buf.buf, read_buf, len);
+ }
+#endif /* XTHREADS*/
+
+ STARTITERATE(rep,xReply,buf.buf,len > 0) {
+ if (rep->generic.type == X_Reply) {
+ int tmp = len;
+ RESETITERPTR(rep,xReply,
+ _XAsyncReply (dpy, rep,
+ ITERPTR(rep), &tmp, True));
+ len = tmp;
+ pend = len;
+ } else {
+ if (rep->generic.type == X_Error)
+ _XError (dpy, (xError *)rep);
+ else /* must be an event packet */
+ _XEnq (dpy, (xEvent *)rep);
+ INCITERPTR(rep,xReply);
+ len -= SIZEOF(xReply);
+ }
+ } ENDITERATE
+
+#ifdef XTHREADS
+ if (cvl)
+#endif
+ {
+ UnlockNextEventReader(dpy);
+ }
+ return(dpy->qlen);
+}
+
+/* _XReadEvents - Flush the output queue,
+ * then read as many events as possible (but at least 1) and enqueue them
+ */
+void _XReadEvents(
+ register Display *dpy)
+{
+ _XAlignedBuffer buf;
+ BytesReadable_t pend;
+ int len;
+ register xReply *rep;
+ Bool not_yet_flushed = True;
+ char *read_buf;
+ int i;
+ int entry_event_serial_num = dpy->next_event_serial_num;
+#ifdef XTHREADS
+ struct _XCVList *cvl = NULL;
+ xthread_t self;
+
+#ifdef XTHREADS_DEBUG
+ printf("_XReadEvents called in thread %x\n",
+ XThread_Self());
+#endif
+ /* create our condition variable and append to list,
+ * unless we were called from within XProcessInternalConnection
+ * or XLockDisplay
+ */
+ xthread_clear_id(self);
+ if (dpy->lock && (xthread_have_id (dpy->lock->conni_thread)
+ || xthread_have_id (dpy->lock->locking_thread)))
+ /* some thread is in XProcessInternalConnection or XLockDisplay
+ so we have to see if we are it */
+ self = XThread_Self();
+ if (!xthread_have_id(self)
+ || (!xthread_equal(self, dpy->lock->conni_thread)
+ && !xthread_equal(self, dpy->lock->locking_thread)))
+ cvl = QueueEventReaderLock(dpy);
+#endif /* XTHREADS */
+
+ do {
+#ifdef XTHREADS
+ /* if it is not our turn to read an event off the wire,
+ wait til we're at head of list */
+ if (dpy->lock && cvl &&
+ (dpy->lock->event_awaiters != cvl ||
+ dpy->lock->reply_first)) {
+ ConditionWait(dpy, cvl->cv);
+ continue;
+ }
+#endif /* XTHREADS */
+ /* find out how much data can be read */
+ if (_X11TransBytesReadable(dpy->trans_conn, &pend) < 0)
+ _XIOError(dpy);
+ len = pend;
+
+ /* must read at least one xEvent; if none is pending, then
+ we'll just flush and block waiting for it */
+ if (len < SIZEOF(xEvent)
+#ifdef XTHREADS
+ || dpy->async_handlers
+#endif
+ ) {
+ len = SIZEOF(xEvent);
+ /* don't flush until the first time we would block */
+ if (not_yet_flushed) {
+ _XFlush (dpy);
+ if (_XNewerQueuedEvent(dpy, entry_event_serial_num)) {
+ /* _XReply has read an event for us */
+ goto got_event;
+ }
+ not_yet_flushed = False;
+ }
+ }
+
+#ifdef XTHREADS
+ /* If someone is waiting for a reply, gamble that
+ the reply will be the next thing on the wire
+ and read it into their buffer. */
+ if (dpy->lock && dpy->lock->reply_awaiters) {
+ read_buf = (char *)dpy->lock->reply_awaiters->buf;
+ len = SIZEOF(xReply);
+ } else
+#endif /* XTHREADS*/
+ {
+ read_buf = buf.buf;
+
+ /* but we won't read more than the max buffer size */
+ if (len > BUFSIZE)
+ len = BUFSIZE;
+
+ /* round down to an integral number of XReps */
+ len = (len / SIZEOF(xEvent)) * SIZEOF(xEvent);
+ }
+
+#ifdef XTHREADS
+ if (xthread_have_id(self))
+ /* save value we may have to stick in conni_thread */
+ dpy->lock->reading_thread = self;
+#endif /* XTHREADS */
+ dpy->flags |= XlibDisplayReadEvents;
+ i = _XRead (dpy, read_buf, (long) len);
+ dpy->flags &= ~XlibDisplayReadEvents;
+ if (i == -2) {
+ /* special flag from _XRead to say that internal connection has
+ done XPutBackEvent. Which we can use so we're done. */
+ got_event:
+#ifdef XTHREADS
+ if (dpy->lock && dpy->lock->lock_wait) {
+ if (dpy->lock->event_awaiters != cvl)
+ /* since it is not us, must be user lock thread */
+ ConditionSignal(dpy,
+ dpy->lock->event_awaiters->cv);
+ (*dpy->lock->lock_wait)(dpy);
+ continue;
+ }
+#endif
+ break;
+ }
+#ifdef XTHREADS
+ if (xthread_have_id(self))
+ xthread_clear_id(dpy->lock->reading_thread);
+
+ /* what did we actually read: reply or event? */
+ if (dpy->lock && dpy->lock->reply_awaiters) {
+ if (((xReply *)read_buf)->generic.type == X_Reply ||
+ ((xReply *)read_buf)->generic.type == X_Error)
+ {
+ dpy->lock->reply_was_read = True;
+ dpy->lock->reply_first = True;
+ if (read_buf != (char *)dpy->lock->reply_awaiters->buf)
+ memcpy(dpy->lock->reply_awaiters->buf,
+ read_buf, len);
+ ConditionSignal(dpy, dpy->lock->reply_awaiters->cv);
+ continue;
+ } else if (read_buf != buf.buf)
+ memcpy(buf.buf, read_buf, len);
+ }
+#endif /* XTHREADS */
+
+ STARTITERATE(rep,xReply,buf.buf,len > 0) {
+ if (rep->generic.type == X_Reply) {
+ RESETITERPTR(rep,xReply,
+ _XAsyncReply (dpy, rep,
+ ITERPTR(rep), &len, True));
+ pend = len;
+ } else {
+ if (rep->generic.type == X_Error)
+ _XError (dpy, (xError *) rep);
+ else /* must be an event packet */
+ {
+ if (rep->generic.type == GenericEvent)
+ {
+ int evlen;
+ evlen = (rep->generic.length << 2);
+ if (_XRead(dpy, &read_buf[len], evlen) == -2)
+ goto got_event; /* XXX: aargh! */
+ }
+
+ _XEnq (dpy, (xEvent *)rep);
+ }
+ INCITERPTR(rep,xReply);
+ len -= SIZEOF(xReply);
+ }
+ } ENDITERATE;
+ } while (!_XNewerQueuedEvent(dpy, entry_event_serial_num));
+
+ UnlockNextEventReader(dpy);
+}
+
+/*
+ * _XRead - Read bytes from the socket taking into account incomplete
+ * reads. This routine may have to be reworked if int < long.
+ */
+int _XRead(
+ register Display *dpy,
+ register char *data,
+ register long size)
+{
+ register long bytes_read;
+#ifdef XTHREADS
+ int original_size = size;
+#endif
+
+ if ((dpy->flags & XlibDisplayIOError) || size == 0)
+ return 0;
+ ESET(0);
+ while ((bytes_read = _X11TransRead(dpy->trans_conn, data, (int)size))
+ != size) {
+
+ if (bytes_read > 0) {
+ size -= bytes_read;
+ data += bytes_read;
+ }
+ else if (ETEST()) {
+ if (_XWaitForReadable(dpy) == -2)
+ return -2; /* internal connection did XPutBackEvent */
+ ESET(0);
+ }
+#ifdef SUNSYSV
+ else if (ECHECK(0)) {
+ if (_XWaitForReadable(dpy) == -2)
+ return -2; /* internal connection did XPutBackEvent */
+ }
+#endif
+ else if (bytes_read == 0) {
+ /* Read failed because of end of file! */
+ ESET(EPIPE);
+ _XIOError(dpy);
+ }
+
+ else /* bytes_read is less than 0; presumably -1 */ {
+ /* If it's a system call interrupt, it's not an error. */
+ if (!ECHECK(EINTR))
+ _XIOError(dpy);
+ }
+ }
+#ifdef XTHREADS
+ if (dpy->lock && dpy->lock->reply_bytes_left > 0)
+ {
+ dpy->lock->reply_bytes_left -= original_size;
+ if (dpy->lock->reply_bytes_left == 0) {
+ dpy->flags &= ~XlibDisplayReply;
+ UnlockNextReplyReader(dpy);
+ }
+ }
+#endif /* XTHREADS*/
+ return 0;
+}
+#endif /* !USE_XCB */
+
+#ifdef LONG64
+void _XRead32(
+ Display *dpy,
+ register long *data,
+ long len)
+{
+ register int *buf;
+ register long i;
+
+ if (len) {
+ (void) _XRead(dpy, (char *)data, len);
+ i = len >> 2;
+ buf = (int *)data + i;
+ data += i;
+ while (--i >= 0)
+ *--data = *--buf;
+ }
+}
+#endif /* LONG64 */
+
+#ifdef WORD64
+
+/*
+ * XXX This is a *really* stupid way of doing this....
+ * PACKBUFFERSIZE must be a multiple of 4.
+ */
+
+#define PACKBUFFERSIZE 4096
+
+
+/*
+ * _XRead32 - Read bytes from the socket unpacking each 32 bits
+ * into a long (64 bits on a CRAY computer).
+ *
+ */
+static void _doXRead32(
+ register Display *dpy,
+ register long *data
+ register long size,
+ register char *packbuffer)
+{
+ long *lpack,*lp;
+ long mask32 = 0x00000000ffffffff;
+ long maskw, nwords, i, bits;
+
+ _XReadPad (dpy, packbuffer, size);
+
+ lp = data;
+ lpack = (long *) packbuffer;
+ nwords = size >> 2;
+ bits = 32;
+
+ for(i=0;i<nwords;i++){
+ maskw = mask32 << bits;
+ *lp++ = ( *lpack & maskw ) >> bits;
+ bits = bits ^32;
+ if(bits){
+ lpack++;
+ }
+ }
+}
+
+void _XRead32(
+ Display *dpy,
+ long *data,
+ long len)
+{
+ char packbuffer[PACKBUFFERSIZE];
+ unsigned nunits = PACKBUFFERSIZE >> 2;
+
+ for (; len > PACKBUFFERSIZE; len -= PACKBUFFERSIZE, data += nunits) {
+ _doXRead32 (dpy, data, PACKBUFFERSIZE, packbuffer);
+ }
+ if (len) _doXRead32 (dpy, data, len, packbuffer);
+}
+
+
+
+/*
+ * _XRead16 - Read bytes from the socket unpacking each 16 bits
+ * into a long (64 bits on a CRAY computer).
+ *
+ */
+static _doXRead16(
+ register Display *dpy,
+ register short *data,
+ register long size,
+ char *packbuffer)
+{
+ long *lpack,*lp;
+ long mask16 = 0x000000000000ffff;
+ long maskw, nwords, i, bits;
+
+ (void) _XRead(dpy,packbuffer,size); /* don't do a padded read... */
+
+ lp = (long *) data;
+ lpack = (long *) packbuffer;
+ nwords = size >> 1; /* number of 16 bit words to be unpacked */
+ bits = 48;
+ for(i=0;i<nwords;i++){
+ maskw = mask16 << bits;
+ *lp++ = ( *lpack & maskw ) >> bits;
+ bits -= 16;
+ if(bits < 0){
+ lpack++;
+ bits = 48;
+ }
+ }
+}
+
+void _XRead16(
+ Display *dpy,
+ short *data,
+ long len)
+{
+ char packbuffer[PACKBUFFERSIZE];
+ unsigned nunits = PACKBUFFERSIZE >> 1;
+
+ for (; len > PACKBUFFERSIZE; len -= PACKBUFFERSIZE, data += nunits) {
+ _doXRead16 (dpy, data, PACKBUFFERSIZE, packbuffer);
+ }
+ if (len) _doXRead16 (dpy, data, len, packbuffer);
+}
+
+void _XRead16Pad(
+ Display *dpy,
+ short *data,
+ long size)
+{
+ int slop = (size & 3);
+ short slopbuf[3];
+
+ _XRead16 (dpy, data, size);
+ if (slop > 0) {
+ _XRead16 (dpy, slopbuf, 4 - slop);
+ }
+}
+#endif /* WORD64 */
+
+
+#if !USE_XCB
+/*
+ * _XReadPad - Read bytes from the socket taking into account incomplete
+ * reads. If the number of bytes is not 0 mod 4, read additional pad
+ * bytes. This routine may have to be reworked if int < long.
+ */
+void _XReadPad(
+ register Display *dpy,
+ register char *data,
+ register long size)
+{
+ register long bytes_read;
+ struct iovec iov[2];
+ char pad[3];
+#ifdef XTHREADS
+ int original_size;
+#endif
+
+ if ((dpy->flags & XlibDisplayIOError) || size == 0) return;
+ iov[0].iov_len = (int)size;
+ iov[0].iov_base = data;
+ /*
+ * The following hack is used to provide 32 bit long-word
+ * aligned padding. The [1] vector is of length 0, 1, 2, or 3,
+ * whatever is needed.
+ */
+
+ iov[1].iov_len = -size & 3;
+ iov[1].iov_base = pad;
+ size += iov[1].iov_len;
+#ifdef XTHREADS
+ original_size = size;
+#endif
+ ESET(0);
+ while ((bytes_read = _X11TransReadv (dpy->trans_conn, iov, 2)) != size) {
+
+ if (bytes_read > 0) {
+ size -= bytes_read;
+ if (iov[0].iov_len < bytes_read) {
+ int pad_bytes_read = bytes_read - iov[0].iov_len;
+ iov[1].iov_len -= pad_bytes_read;
+ iov[1].iov_base =
+ (char *)iov[1].iov_base + pad_bytes_read;
+ iov[0].iov_len = 0;
+ }
+ else {
+ iov[0].iov_len -= bytes_read;
+ iov[0].iov_base = (char *)iov[0].iov_base + bytes_read;
+ }
+ }
+ else if (ETEST()) {
+ _XWaitForReadable(dpy);
+ ESET(0);
+ }
+#ifdef SUNSYSV
+ else if (ECHECK(0)) {
+ _XWaitForReadable(dpy);
+ }
+#endif
+ else if (bytes_read == 0) {
+ /* Read failed because of end of file! */
+ ESET(EPIPE);
+ _XIOError(dpy);
+ }
+
+ else /* bytes_read is less than 0; presumably -1 */ {
+ /* If it's a system call interrupt, it's not an error. */
+ if (!ECHECK(EINTR))
+ _XIOError(dpy);
+ }
+ }
+#ifdef XTHREADS
+ if (dpy->lock && dpy->lock->reply_bytes_left > 0)
+ {
+ dpy->lock->reply_bytes_left -= original_size;
+ if (dpy->lock->reply_bytes_left == 0) {
+ dpy->flags &= ~XlibDisplayReply;
+ UnlockNextReplyReader(dpy);
+ }
+ }
+#endif /* XTHREADS*/
+}
+
+/*
+ * _XSend - Flush the buffer and send the client data. 32 bit word aligned
+ * transmission is used, if size is not 0 mod 4, extra bytes are transmitted.
+ * This routine may have to be reworked if int < long;
+ */
+void
+_XSend (
+ register Display *dpy,
+ _Xconst char *data,
+ register long size)
+{
+ struct iovec iov[3];
+ static char const pad[3] = {0, 0, 0};
+ /* XText8 and XText16 require that the padding bytes be zero! */
+
+ long skip, dbufsize, padsize, total, todo;
+ _XExtension *ext;
+
+ if (!size || (dpy->flags & XlibDisplayIOError)) return;
+ dbufsize = dpy->bufptr - dpy->buffer;
+#ifdef XTHREADS
+ dpy->flags |= XlibDisplayWriting;
+ /* make sure no one else can put in data */
+ dpy->bufptr = dpy->bufmax;
+#endif
+ padsize = -size & 3;
+ for (ext = dpy->flushes; ext; ext = ext->next_flush) {
+ (*ext->before_flush)(dpy, &ext->codes, dpy->buffer, dbufsize);
+ (*ext->before_flush)(dpy, &ext->codes, (char *)data, size);
+ if (padsize)
+ (*ext->before_flush)(dpy, &ext->codes, pad, padsize);
+ }
+ skip = 0;
+ todo = total = dbufsize + size + padsize;
+
+ /*
+ * There are 3 pieces that may need to be written out:
+ *
+ * o whatever is in the display buffer
+ * o the data passed in by the user
+ * o any padding needed to 32bit align the whole mess
+ *
+ * This loop looks at all 3 pieces each time through. It uses skip
+ * to figure out whether or not a given piece is needed.
+ */
+ while (total) {
+ long before = skip; /* amount of whole thing written */
+ long remain = todo; /* amount to try this time, <= total */
+ int i = 0;
+ long len;
+
+ /* You could be very general here and have "in" and "out" iovecs
+ * and write a loop without using a macro, but what the heck. This
+ * translates to:
+ *
+ * how much of this piece is new?
+ * if more new then we are trying this time, clamp
+ * if nothing new
+ * then bump down amount already written, for next piece
+ * else put new stuff in iovec, will need all of next piece
+ *
+ * Note that todo had better be at least 1 or else we'll end up
+ * writing 0 iovecs.
+ */
+#define InsertIOV(pointer, length) \
+ len = (length) - before; \
+ if (len > remain) \
+ len = remain; \
+ if (len <= 0) { \
+ before = (-len); \
+ } else { \
+ iov[i].iov_len = len; \
+ iov[i].iov_base = (pointer) + before; \
+ i++; \
+ remain -= len; \
+ before = 0; \
+ }
+
+ InsertIOV (dpy->buffer, dbufsize)
+ InsertIOV ((char *)data, size)
+ InsertIOV ((char *)pad, padsize)
+
+ ESET(0);
+ if ((len = _X11TransWritev(dpy->trans_conn, iov, i)) >= 0) {
+ skip += len;
+ total -= len;
+ todo = total;
+ } else if (ETEST()) {
+ _XWaitForWritable(dpy
+#ifdef XTHREADS
+ , NULL
+#endif
+ );
+#ifdef SUNSYSV
+ } else if (ECHECK(0)) {
+ _XWaitForWritable(dpy
+#ifdef XTHREADS
+ , NULL
+#endif
+ );
+#endif
+#ifdef ESZTEST
+ } else if (ESZTEST()) {
+ if (todo > 1)
+ todo >>= 1;
+ else {
+ _XWaitForWritable(dpy
+#ifdef XTHREADS
+ , NULL
+#endif
+ );
+ }
+#endif
+ } else if (!ECHECK(EINTR)) {
+ _XIOError(dpy);
+ }
+ }
+ dpy->last_req = (char *) & _dummy_request;
+ _XSetSeqSyncFunction(dpy);
+ dpy->bufptr = dpy->buffer;
+#ifdef XTHREADS
+ dpy->flags &= ~XlibDisplayWriting;
+#endif
+ return;
+}
+
+static void
+_XGetMiscCode(
+ register Display *dpy)
+{
+ xQueryExtensionReply qrep;
+ register xQueryExtensionReq *qreq;
+ xXCMiscGetVersionReply vrep;
+ register xXCMiscGetVersionReq *vreq;
+
+ if (dpy->xcmisc_opcode)
+ return;
+ GetReq(QueryExtension, qreq);
+ qreq->nbytes = sizeof(XCMiscExtensionName) - 1;
+ qreq->length += (qreq->nbytes+(unsigned)3)>>2;
+ _XSend(dpy, XCMiscExtensionName, (long)qreq->nbytes);
+ if (!_XReply (dpy, (xReply *)&qrep, 0, xTrue))
+ dpy->xcmisc_opcode = -1;
+ else {
+ GetReq(XCMiscGetVersion, vreq);
+ vreq->reqType = qrep.major_opcode;
+ vreq->miscReqType = X_XCMiscGetVersion;
+ vreq->majorVersion = XCMiscMajorVersion;
+ vreq->minorVersion = XCMiscMinorVersion;
+ if (!_XReply (dpy, (xReply *)&vrep, 0, xTrue))
+ dpy->xcmisc_opcode = -1;
+ else
+ dpy->xcmisc_opcode = qrep.major_opcode;
+ }
+}
+
+void
+_XIDHandler(
+ register Display *dpy)
+{
+ xXCMiscGetXIDRangeReply grep;
+ register xXCMiscGetXIDRangeReq *greq;
+
+ if (dpy->resource_max == dpy->resource_mask + 1) {
+ _XGetMiscCode(dpy);
+ if (dpy->xcmisc_opcode > 0) {
+ GetReq(XCMiscGetXIDRange, greq);
+ greq->reqType = dpy->xcmisc_opcode;
+ greq->miscReqType = X_XCMiscGetXIDRange;
+ if (_XReply (dpy, (xReply *)&grep, 0, xTrue) && grep.count) {
+ dpy->resource_id = ((grep.start_id - dpy->resource_base) >>
+ dpy->resource_shift);
+ dpy->resource_max = dpy->resource_id;
+ if (grep.count > 5)
+ dpy->resource_max += grep.count - 6;
+ dpy->resource_max <<= dpy->resource_shift;
+ }
+ sync_while_locked(dpy);
+ }
+ }
+}
+
+/*
+ * _XAllocID - resource ID allocation routine.
+ */
+XID _XAllocID(
+ register Display *dpy)
+{
+ XID id;
+
+ id = dpy->resource_id << dpy->resource_shift;
+ if (id >= dpy->resource_max) {
+ _XSetPrivSyncFunction(dpy);
+ dpy->resource_max = dpy->resource_mask + 1;
+ }
+ if (id <= dpy->resource_mask) {
+ dpy->resource_id++;
+ return (dpy->resource_base + id);
+ }
+ if (id != 0x10000000) {
+ (void) fprintf(stderr,
+ "Xlib: resource ID allocation space exhausted!\n");
+ id = 0x10000000;
+ dpy->resource_id = id >> dpy->resource_shift;
+ }
+ return id;
+}
+
+/*
+ * _XAllocIDs - multiple resource ID allocation routine.
+ */
+void _XAllocIDs(
+ register Display *dpy,
+ XID *ids,
+ int count)
+{
+ XID id;
+ int i;
+ xXCMiscGetXIDListReply grep;
+ register xXCMiscGetXIDListReq *greq;
+
+ id = dpy->resource_id << dpy->resource_shift;
+ if (dpy->resource_max <= dpy->resource_mask &&
+ id <= dpy->resource_mask &&
+ (dpy->resource_max - id) > ((count - 1) << dpy->resource_shift)) {
+ id += dpy->resource_base;
+ for (i = 0; i < count; i++) {
+ ids[i] = id;
+ id += (1 << dpy->resource_shift);
+ dpy->resource_id++;
+ }
+ return;
+ }
+ grep.count = 0;
+ _XGetMiscCode(dpy);
+ if (dpy->xcmisc_opcode > 0) {
+ GetReq(XCMiscGetXIDList, greq);
+ greq->reqType = dpy->xcmisc_opcode;
+ greq->miscReqType = X_XCMiscGetXIDList;
+ greq->count = count;
+ if (_XReply(dpy, (xReply *)&grep, 0, xFalse) && grep.count) {
+ _XRead32(dpy, (long *) ids, 4L * (long) (grep.count));
+ for (i = 0; i < grep.count; i++) {
+ id = (ids[i] - dpy->resource_base) >> dpy->resource_shift;
+ if (id >= dpy->resource_id)
+ dpy->resource_id = id;
+ }
+ if (id >= dpy->resource_max) {
+ _XSetPrivSyncFunction(dpy);
+ dpy->resource_max = dpy->resource_mask + 1;
+ }
+ }
+ }
+ for (i = grep.count; i < count; i++)
+ ids[i] = XAllocID(dpy);
+}
+#endif /* !USE_XCB */
+
+/*
+ * The hard part about this is that we only get 16 bits from a reply.
+ * We have three values that will march along, with the following invariant:
+ * dpy->last_request_read <= rep->sequenceNumber <= dpy->request
+ * We have to keep
+ * dpy->request - dpy->last_request_read < 2^16
+ * or else we won't know for sure what value to use in events. We do this
+ * by forcing syncs when we get close.
+ */
+
+unsigned long
+_XSetLastRequestRead(
+ register Display *dpy,
+ register xGenericReply *rep)
+{
+ register unsigned long newseq, lastseq;
+
+ lastseq = dpy->last_request_read;
+ /*
+ * KeymapNotify has no sequence number, but is always guaranteed
+ * to immediately follow another event, except when generated via
+ * SendEvent (hmmm).
+ */
+ if ((rep->type & 0x7f) == KeymapNotify)
+ return(lastseq);
+
+ newseq = (lastseq & ~((unsigned long)0xffff)) | rep->sequenceNumber;
+
+ if (newseq < lastseq) {
+ newseq += 0x10000;
+ if (newseq > dpy->request) {
+ (void) fprintf (stderr,
+ "Xlib: sequence lost (0x%lx > 0x%lx) in reply type 0x%x!\n",
+ newseq, dpy->request,
+ (unsigned int) rep->type);
+ newseq -= 0x10000;
+ }
+ }
+
+ dpy->last_request_read = newseq;
+ return(newseq);
+}
+
+#if !USE_XCB
+/*
+ * _XReply - Wait for a reply packet and copy its contents into the
+ * specified rep. Meanwhile we must handle error and event packets that
+ * we may encounter.
+ */
+Status
+_XReply (
+ register Display *dpy,
+ register xReply *rep,
+ int extra, /* number of 32-bit words expected after the reply */
+ Bool discard) /* should I discard data following "extra" words? */
+{
+ /* Pull out the serial number now, so that (currently illegal) requests
+ * generated by an error handler don't confuse us.
+ */
+ unsigned long cur_request = dpy->request;
+#ifdef XTHREADS
+ struct _XCVList *cvl;
+#endif
+
+ if (dpy->flags & XlibDisplayIOError)
+ return 0;
+
+#ifdef XTHREADS
+ /* create our condition variable and append to list */
+ cvl = QueueReplyReaderLock(dpy);
+ if (cvl) {
+ cvl->buf = rep;
+ if (dpy->lock->reply_awaiters == cvl && !dpy->lock->event_awaiters)
+ dpy->lock->reply_first = True;
+ }
+
+#ifdef XTHREADS_DEBUG
+ printf("_XReply called in thread %x, adding %x to cvl\n",
+ XThread_Self(), cvl);
+#endif
+
+ _XFlushInt(dpy, cvl ? cvl->cv : NULL);
+ /* if it is not our turn to read a reply off the wire,
+ * wait til we're at head of list. if there is an event waiter,
+ * and our reply hasn't been read, they'll be in select and will
+ * hand control back to us next.
+ */
+ if(dpy->lock &&
+ (dpy->lock->reply_awaiters != cvl || !dpy->lock->reply_first)) {
+ ConditionWait(dpy, cvl->cv);
+ }
+ dpy->flags |= XlibDisplayReply;
+#else /* XTHREADS else */
+ _XFlush(dpy);
+#endif
+
+ for (;;) {
+#ifdef XTHREADS
+ /* Did another thread's _XReadEvents get our reply by accident? */
+ if (!dpy->lock || !dpy->lock->reply_was_read)
+#endif
+ (void) _XRead(dpy, (char *)rep, (long)SIZEOF(xReply));
+#ifdef XTHREADS
+ if (dpy->lock)
+ dpy->lock->reply_was_read = False;
+#endif
+
+ switch ((int)rep->generic.type) {
+
+ case X_Reply:
+ /* Reply received. Fast update for synchronous replies,
+ * but deal with multiple outstanding replies.
+ */
+ if (rep->generic.sequenceNumber == (cur_request & 0xffff))
+ dpy->last_request_read = cur_request;
+ else {
+ int pend = SIZEOF(xReply);
+ if (_XAsyncReply(dpy, rep, (char *)rep, &pend, False)
+ != (char *)rep)
+ continue;
+ }
+ if (extra <= rep->generic.length) {
+ if (extra > 0)
+ /*
+ * Read the extra data into storage immediately
+ * following the GenericReply structure.
+ */
+ (void) _XRead (dpy, (char *) (NEXTPTR(rep,xReply)),
+ ((long)extra) << 2);
+ if (discard) {
+ if (extra < rep->generic.length)
+ _XEatData(dpy, (rep->generic.length - extra) << 2);
+ }
+#ifdef XTHREADS
+ if (dpy->lock) {
+ if (discard) {
+ dpy->lock->reply_bytes_left = 0;
+ } else {
+ dpy->lock->reply_bytes_left =
+ (rep->generic.length - extra) << 2;
+ }
+ if (dpy->lock->reply_bytes_left == 0) {
+ dpy->flags &= ~XlibDisplayReply;
+ UnlockNextReplyReader(dpy);
+ }
+ } else
+ dpy->flags &= ~XlibDisplayReply;
+#endif
+ return 1;
+ }
+ /*
+ *if we get here, then extra > rep->generic.length--meaning we
+ * read a reply that's shorter than we expected. This is an
+ * error, but we still need to figure out how to handle it...
+ */
+ (void) _XRead (dpy, (char *) (NEXTPTR(rep,xReply)),
+ ((long) rep->generic.length) << 2);
+ dpy->flags &= ~XlibDisplayReply;
+ UnlockNextReplyReader(dpy);
+ _XIOError (dpy);
+ return (0);
+
+ case X_Error:
+ {
+ register _XExtension *ext;
+ register Bool ret = False;
+ int ret_code;
+ xError *err = (xError *) rep;
+ unsigned long serial;
+
+ dpy->flags &= ~XlibDisplayReply;
+ serial = _XSetLastRequestRead(dpy, (xGenericReply *)rep);
+ if (serial == cur_request)
+ /* do not die on "no such font", "can't allocate",
+ "can't grab" failures */
+ switch ((int)err->errorCode) {
+ case BadName:
+ switch (err->majorCode) {
+ case X_LookupColor:
+ case X_AllocNamedColor:
+ UnlockNextReplyReader(dpy);
+ return(0);
+ }
+ break;
+ case BadFont:
+ if (err->majorCode == X_QueryFont) {
+ UnlockNextReplyReader(dpy);
+ return (0);
+ }
+ break;
+ case BadAlloc:
+ case BadAccess:
+ UnlockNextReplyReader(dpy);
+ return (0);
+ }
+ /*
+ * we better see if there is an extension who may
+ * want to suppress the error.
+ */
+ for (ext = dpy->ext_procs; !ret && ext; ext = ext->next) {
+ if (ext->error)
+ ret = (*ext->error)(dpy, err, &ext->codes, &ret_code);
+ }
+ if (!ret) {
+ _XError(dpy, err);
+ ret_code = 0;
+ }
+ if (serial == cur_request) {
+ UnlockNextReplyReader(dpy);
+ return(ret_code);
+ }
+
+ } /* case X_Error */
+ break;
+ default:
+ _XEnq(dpy, (xEvent *) rep);
+#ifdef XTHREADS
+ if (dpy->lock && dpy->lock->event_awaiters)
+ ConditionSignal(dpy, dpy->lock->event_awaiters->cv);
+#endif
+ break;
+ }
+ }
+}
+
+static char *
+_XAsyncReply(
+ Display *dpy,
+ register xReply *rep,
+ char *buf,
+ register int *lenp,
+ Bool discard)
+{
+ register _XAsyncHandler *async, *next;
+ register int len;
+ register Bool consumed = False;
+ char *nbuf;
+
+ (void) _XSetLastRequestRead(dpy, &rep->generic);
+ len = SIZEOF(xReply) + (rep->generic.length << 2);
+ if (len < SIZEOF(xReply)) {
+ _XIOError (dpy);
+ buf += *lenp;
+ *lenp = 0;
+ return buf;
+ }
+
+ for (async = dpy->async_handlers; async; async = next) {
+ next = async->next;
+ if ((consumed = (*async->handler)(dpy, rep, buf, *lenp, async->data)))
+ break;
+ }
+ if (!consumed) {
+ if (!discard)
+ return buf;
+ (void) fprintf(stderr,
+ "Xlib: unexpected async reply (sequence 0x%lx)!\n",
+ dpy->last_request_read);
+#ifdef XTHREADS
+#ifdef XTHREADS_DEBUG
+ printf("thread %x, unexpected async reply\n", XThread_Self());
+#endif
+#endif
+ if (len > *lenp)
+ _XEatData(dpy, len - *lenp);
+ }
+ if (len < SIZEOF(xReply))
+ {
+ _XIOError (dpy);
+ buf += *lenp;
+ *lenp = 0;
+ return buf;
+ }
+ if (len >= *lenp) {
+ buf += *lenp;
+ *lenp = 0;
+ return buf;
+ }
+ *lenp -= len;
+ buf += len;
+ len = *lenp;
+ nbuf = buf;
+ while (len > SIZEOF(xReply)) {
+ if (*buf == X_Reply)
+ return nbuf;
+ buf += SIZEOF(xReply);
+ len -= SIZEOF(xReply);
+ }
+ if (len > 0 && len < SIZEOF(xReply)) {
+ buf = nbuf;
+ len = SIZEOF(xReply) - len;
+ nbuf -= len;
+ memmove(nbuf, buf, *lenp);
+ (void) _XRead(dpy, nbuf + *lenp, (long)len);
+ *lenp += len;
+ }
+ return nbuf;
+}
+#endif /* !USE_XCB */
+
+/*
+ * Support for internal connections, such as an IM might use.
+ * By Stephen Gildea, X Consortium, September 1993
+ */
+
+/* _XRegisterInternalConnection
+ * Each IM (or Xlib extension) that opens a file descriptor that Xlib should
+ * include in its select/poll mask must call this function to register the
+ * fd with Xlib. Any XConnectionWatchProc registered by XAddConnectionWatch
+ * will also be called.
+ *
+ * Whenever Xlib detects input available on fd, it will call callback
+ * with call_data to process it. If non-Xlib code calls select/poll
+ * and detects input available, it must call XProcessInternalConnection,
+ * which will call the associated callback.
+ *
+ * Non-Xlib code can learn about these additional fds by calling
+ * XInternalConnectionNumbers or, more typically, by registering
+ * a XConnectionWatchProc with XAddConnectionWatch
+ * to be called when fds are registered or unregistered.
+ *
+ * Returns True if registration succeeded, False if not, typically
+ * because could not allocate memory.
+ * Assumes Display locked when called.
+ */
+Status
+_XRegisterInternalConnection(
+ Display* dpy,
+ int fd,
+ _XInternalConnectionProc callback,
+ XPointer call_data
+)
+{
+ struct _XConnectionInfo *new_conni, **iptr;
+ struct _XConnWatchInfo *watchers;
+ XPointer *wd;
+
+ new_conni = (struct _XConnectionInfo*)Xmalloc(sizeof(struct _XConnectionInfo));
+ if (!new_conni)
+ return 0;
+ new_conni->watch_data = (XPointer *)Xmalloc(dpy->watcher_count * sizeof(XPointer));
+ if (!new_conni->watch_data) {
+ Xfree(new_conni);
+ return 0;
+ }
+ new_conni->fd = fd;
+ new_conni->read_callback = callback;
+ new_conni->call_data = call_data;
+ new_conni->next = NULL;
+ /* link new structure onto end of list */
+ for (iptr = &dpy->im_fd_info; *iptr; iptr = &(*iptr)->next)
+ ;
+ *iptr = new_conni;
+ dpy->im_fd_length++;
+ _XPollfdCacheAdd(dpy, fd);
+
+ for (watchers=dpy->conn_watchers, wd=new_conni->watch_data;
+ watchers;
+ watchers=watchers->next, wd++) {
+ *wd = NULL; /* for cleanliness */
+ (*watchers->fn) (dpy, watchers->client_data, fd, True, wd);
+ }
+
+ return 1;
+}
+
+/* _XUnregisterInternalConnection
+ * Each IM (or Xlib extension) that closes a file descriptor previously
+ * registered with _XRegisterInternalConnection must call this function.
+ * Any XConnectionWatchProc registered by XAddConnectionWatch
+ * will also be called.
+ *
+ * Assumes Display locked when called.
+ */
+void
+_XUnregisterInternalConnection(
+ Display* dpy,
+ int fd
+)
+{
+ struct _XConnectionInfo *info_list, **prev;
+ struct _XConnWatchInfo *watch;
+ XPointer *wd;
+
+ for (prev = &dpy->im_fd_info; (info_list = *prev);
+ prev = &info_list->next) {
+ if (info_list->fd == fd) {
+ *prev = info_list->next;
+ dpy->im_fd_length--;
+ for (watch=dpy->conn_watchers, wd=info_list->watch_data;
+ watch;
+ watch=watch->next, wd++) {
+ (*watch->fn) (dpy, watch->client_data, fd, False, wd);
+ }
+ if (info_list->watch_data)
+ Xfree (info_list->watch_data);
+ Xfree (info_list);
+ break;
+ }
+ }
+ _XPollfdCacheDel(dpy, fd);
+}
+
+/* XInternalConnectionNumbers
+ * Returns an array of fds and an array of corresponding call data.
+ * Typically a XConnectionWatchProc registered with XAddConnectionWatch
+ * will be used instead of this function to discover
+ * additional fds to include in the select/poll mask.
+ *
+ * The list is allocated with Xmalloc and should be freed by the caller
+ * with Xfree;
+ */
+Status
+XInternalConnectionNumbers(
+ Display *dpy,
+ int **fd_return,
+ int *count_return
+)
+{
+ int count;
+ struct _XConnectionInfo *info_list;
+ int *fd_list;
+
+ LockDisplay(dpy);
+ count = 0;
+ for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next)
+ count++;
+ fd_list = (int*) Xmalloc (count * sizeof(int));
+ if (!fd_list) {
+ UnlockDisplay(dpy);
+ return 0;
+ }
+ count = 0;
+ for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) {
+ fd_list[count] = info_list->fd;
+ count++;
+ }
+ UnlockDisplay(dpy);
+
+ *fd_return = fd_list;
+ *count_return = count;
+ return 1;
+}
+
+void _XProcessInternalConnection(
+ Display *dpy,
+ struct _XConnectionInfo *conn_info)
+{
+ dpy->flags |= XlibDisplayProcConni;
+#if defined(XTHREADS) && !USE_XCB
+ if (dpy->lock) {
+ /* check cache to avoid call to thread_self */
+ if (xthread_have_id(dpy->lock->reading_thread))
+ dpy->lock->conni_thread = dpy->lock->reading_thread;
+ else
+ dpy->lock->conni_thread = XThread_Self();
+ }
+#endif /* XTHREADS && !USE_XCB */
+ UnlockDisplay(dpy);
+ (*conn_info->read_callback) (dpy, conn_info->fd, conn_info->call_data);
+ LockDisplay(dpy);
+#if defined(XTHREADS) && !USE_XCB
+ if (dpy->lock)
+ xthread_clear_id(dpy->lock->conni_thread);
+#endif /* XTHREADS && !USE_XCB */
+ dpy->flags &= ~XlibDisplayProcConni;
+}
+
+/* XProcessInternalConnection
+ * Call the _XInternalConnectionProc registered by _XRegisterInternalConnection
+ * for this fd.
+ * The Display is NOT locked during the call.
+ */
+void
+XProcessInternalConnection(
+ Display* dpy,
+ int fd
+)
+{
+ struct _XConnectionInfo *info_list;
+
+ LockDisplay(dpy);
+ for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) {
+ if (info_list->fd == fd) {
+ _XProcessInternalConnection(dpy, info_list);
+ break;
+ }
+ }
+ UnlockDisplay(dpy);
+}
+
+/* XAddConnectionWatch
+ * Register a callback to be called whenever _XRegisterInternalConnection
+ * or _XUnregisterInternalConnection is called.
+ * Callbacks are called with the Display locked.
+ * If any connections are already registered, the callback is immediately
+ * called for each of them.
+ */
+Status
+XAddConnectionWatch(
+ Display* dpy,
+ XConnectionWatchProc callback,
+ XPointer client_data
+)
+{
+ struct _XConnWatchInfo *new_watcher, **wptr;
+ struct _XConnectionInfo *info_list;
+ XPointer *wd_array;
+
+ LockDisplay(dpy);
+
+ /* allocate new watch data */
+ for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) {
+ wd_array = (XPointer *)Xrealloc((char *)info_list->watch_data,
+ (dpy->watcher_count + 1) *
+ sizeof(XPointer));
+ if (!wd_array) {
+ UnlockDisplay(dpy);
+ return 0;
+ }
+ wd_array[dpy->watcher_count] = NULL; /* for cleanliness */
+ }
+
+ new_watcher = (struct _XConnWatchInfo*)Xmalloc(sizeof(struct _XConnWatchInfo));
+ if (!new_watcher) {
+ UnlockDisplay(dpy);
+ return 0;
+ }
+ new_watcher->fn = callback;
+ new_watcher->client_data = client_data;
+ new_watcher->next = NULL;
+
+ /* link new structure onto end of list */
+ for (wptr = &dpy->conn_watchers; *wptr; wptr = &(*wptr)->next)
+ ;
+ *wptr = new_watcher;
+ dpy->watcher_count++;
+
+ /* call new watcher on all currently registered fds */
+ for (info_list=dpy->im_fd_info; info_list; info_list=info_list->next) {
+ (*callback) (dpy, client_data, info_list->fd, True,
+ info_list->watch_data + dpy->watcher_count - 1);
+ }
+
+ UnlockDisplay(dpy);
+ return 1;
+}
+
+/* XRemoveConnectionWatch
+ * Unregister a callback registered by XAddConnectionWatch.
+ * Both callback and client_data must match what was passed to
+ * XAddConnectionWatch.
+ */
+void
+XRemoveConnectionWatch(
+ Display* dpy,
+ XConnectionWatchProc callback,
+ XPointer client_data
+)
+{
+ struct _XConnWatchInfo *watch;
+ struct _XConnWatchInfo *previous = NULL;
+ struct _XConnectionInfo *conni;
+ int counter = 0;
+
+ LockDisplay(dpy);
+ for (watch=dpy->conn_watchers; watch; watch=watch->next) {
+ if (watch->fn == callback && watch->client_data == client_data) {
+ if (previous)
+ previous->next = watch->next;
+ else
+ dpy->conn_watchers = watch->next;
+ Xfree (watch);
+ dpy->watcher_count--;
+ /* remove our watch_data for each connection */
+ for (conni=dpy->im_fd_info; conni; conni=conni->next) {
+ /* don't bother realloc'ing; these arrays are small anyway */
+ /* overlapping */
+ memmove(conni->watch_data+counter,
+ conni->watch_data+counter+1,
+ dpy->watcher_count - counter);
+ }
+ break;
+ }
+ previous = watch;
+ counter++;
+ }
+ UnlockDisplay(dpy);
+}
+
+/* end of internal connections support */
+
+
+#if !USE_XCB
+/* Read and discard "n" 8-bit bytes of data */
+
+void _XEatData(
+ Display *dpy,
+ register unsigned long n)
+{
+#define SCRATCHSIZE 2048
+ char buf[SCRATCHSIZE];
+
+ while (n > 0) {
+ register long bytes_read = (n > SCRATCHSIZE) ? SCRATCHSIZE : n;
+ (void) _XRead (dpy, buf, bytes_read);
+ n -= bytes_read;
+ }
+#undef SCRATCHSIZE
+}
+#endif /* !USE_XCB */
+
+/* Cookie jar implementation
+ dpy->cookiejar is a linked list. _XEnq receives the events but leaves
+ them in the normal EQ. _XStoreEvent returns the cookie event (minus
+ data pointer) and adds it to the cookiejar. _XDeq just removes
+ the entry like any other event but resets the data pointer for
+ cookie events (to avoid double-free, the memory is re-used by Xlib).
+
+ _XFetchEventCookie (called from XGetEventData) removes a cookie from the
+ jar. _XFreeEventCookies removes all unclaimed cookies from the jar
+ (called by XNextEvent).
+
+ _XFreeDisplayStructure calls _XFreeEventCookies for each cookie in the
+ normal EQ.
+ */
+
+#include "utlist.h"
+struct stored_event {
+ XGenericEventCookie ev;
+ struct stored_event *prev;
+ struct stored_event *next;
+};
+
+Bool
+_XIsEventCookie(Display *dpy, XEvent *ev)
+{
+ return (ev->xcookie.type == GenericEvent &&
+ dpy->generic_event_vec[ev->xcookie.extension & 0x7F] != NULL);
+}
+
+/**
+ * Free all events in the event list.
+ */
+void
+_XFreeEventCookies(Display *dpy)
+{
+ struct stored_event **head, *e, *tmp;
+
+ if (!dpy->cookiejar)
+ return;
+
+ head = (struct stored_event**)&dpy->cookiejar;
+
+ DL_FOREACH_SAFE(*head, e, tmp) {
+ XFree(e->ev.data);
+ XFree(e);
+ if (dpy->cookiejar == e)
+ dpy->cookiejar = NULL;
+ }
+}
+
+/**
+ * Add an event to the display's event list. This event must be freed on the
+ * next call to XNextEvent().
+ */
+void
+_XStoreEventCookie(Display *dpy, XEvent *event)
+{
+ XGenericEventCookie* cookie = &event->xcookie;
+ struct stored_event **head, *add;
+
+ if (!_XIsEventCookie(dpy, event))
+ return;
+
+ head = (struct stored_event**)(&dpy->cookiejar);
+
+ add = Xmalloc(sizeof(struct stored_event));
+ if (!add) {
+ ESET(ENOMEM);
+ _XIOError(dpy);
+ }
+ add->ev = *cookie;
+ DL_APPEND(*head, add);
+ cookie->data = NULL; /* don't return data yet, must be claimed */
+}
+
+/**
+ * Return the event with the given cookie and remove it from the list.
+ */
+Bool
+_XFetchEventCookie(Display *dpy, XGenericEventCookie* ev)
+{
+ Bool ret = False;
+ struct stored_event **head, *event;
+ head = (struct stored_event**)&dpy->cookiejar;
+
+ if (!_XIsEventCookie(dpy, (XEvent*)ev))
+ return ret;
+
+ DL_FOREACH(*head, event) {
+ if (event->ev.cookie == ev->cookie &&
+ event->ev.extension == ev->extension &&
+ event->ev.evtype == ev->evtype) {
+ *ev = event->ev;
+ DL_DELETE(*head, event);
+ Xfree(event);
+ ret = True;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+Bool
+_XCopyEventCookie(Display *dpy, XGenericEventCookie *in, XGenericEventCookie *out)
+{
+ Bool ret = False;
+ int extension;
+
+ if (!_XIsEventCookie(dpy, (XEvent*)in) || !out)
+ return ret;
+
+ extension = in->extension & 0x7F;
+
+ if (!dpy->generic_event_copy_vec[extension])
+ return ret;
+
+ ret = ((*dpy->generic_event_copy_vec[extension])(dpy, in, out));
+ out->cookie = ret ? ++dpy->next_cookie : 0;
+ return ret;
+}
+
+
+/*
+ * _XEnq - Place event packets on the display's queue.
+ * note that no squishing of move events in V11, since there
+ * is pointer motion hints....
+ */
+void _XEnq(
+ register Display *dpy,
+ register xEvent *event)
+{
+ register _XQEvent *qelt;
+ int type, extension;
+
+ if ((qelt = dpy->qfree)) {
+ /* If dpy->qfree is non-NULL do this, else malloc a new one. */
+ dpy->qfree = qelt->next;
+ }
+ else if ((qelt =
+ (_XQEvent *) Xmalloc((unsigned)sizeof(_XQEvent))) == NULL) {
+ /* Malloc call failed! */
+ ESET(ENOMEM);
+ _XIOError(dpy);
+ }
+ qelt->next = NULL;
+
+ type = event->u.u.type & 0177;
+ extension = ((xGenericEvent*)event)->extension;
+ /* If an extension has registerd a generic_event_vec handler, then
+ * it can handle event cookies. Otherwise, proceed with the normal
+ * event handlers.
+ *
+ * If the generic_event_vec is called, qelt->event is a event cookie
+ * with the data pointer and the "free" pointer set. Data pointer is
+ * some memory allocated by the extension.
+ */
+ if (type == GenericEvent && dpy->generic_event_vec[extension & 0x7F]) {
+ XGenericEventCookie *cookie = &qelt->event.xcookie;
+ (*dpy->generic_event_vec[extension & 0x7F])(dpy, cookie, event);
+ cookie->cookie = ++dpy->next_cookie;
+
+ qelt->qserial_num = dpy->next_event_serial_num++;
+ if (dpy->tail) dpy->tail->next = qelt;
+ else dpy->head = qelt;
+
+ dpy->tail = qelt;
+ dpy->qlen++;
+ } else if ((*dpy->event_vec[type])(dpy, &qelt->event, event)) {
+ qelt->qserial_num = dpy->next_event_serial_num++;
+ if (dpy->tail) dpy->tail->next = qelt;
+ else dpy->head = qelt;
+
+ dpy->tail = qelt;
+ dpy->qlen++;
+ } else {
+ /* ignored, or stashed away for many-to-one compression */
+ qelt->next = dpy->qfree;
+ dpy->qfree = qelt;
+ }
+}
+
+/*
+ * _XDeq - Remove event packet from the display's queue.
+ */
+void _XDeq(
+ register Display *dpy,
+ register _XQEvent *prev, /* element before qelt */
+ register _XQEvent *qelt) /* element to be unlinked */
+{
+ if (prev) {
+ if ((prev->next = qelt->next) == NULL)
+ dpy->tail = prev;
+ } else {
+ /* no prev, so removing first elt */
+ if ((dpy->head = qelt->next) == NULL)
+ dpy->tail = NULL;
+ }
+ qelt->qserial_num = 0;
+ qelt->next = dpy->qfree;
+ dpy->qfree = qelt;
+ dpy->qlen--;
+
+ if (_XIsEventCookie(dpy, &qelt->event)) {
+ XGenericEventCookie* cookie = &qelt->event.xcookie;
+ /* dpy->qfree is re-used, reset memory to avoid double free on
+ * _XFreeDisplayStructure */
+ cookie->data = NULL;
+ }
+}
+
+/*
+ * EventToWire in separate file in that often not needed.
+ */
+
+/*ARGSUSED*/
+Bool
+_XUnknownWireEvent(
+ register Display *dpy, /* pointer to display structure */
+ register XEvent *re, /* pointer to where event should be reformatted */
+ register xEvent *event) /* wire protocol event */
+{
+#ifdef notdef
+ (void) fprintf(stderr,
+ "Xlib: unhandled wire event! event number = %d, display = %x\n.",
+ event->u.u.type, dpy);
+#endif
+ return(False);
+}
+
+Bool
+_XUnknownWireEventCookie(
+ Display *dpy, /* pointer to display structure */
+ XGenericEventCookie *re, /* pointer to where event should be reformatted */
+ xEvent *event) /* wire protocol event */
+{
+#ifdef notdef
+ fprintf(stderr,
+ "Xlib: unhandled wire cookie event! extension number = %d, display = %x\n.",
+ ((xGenericEvent*)event)->extension, dpy);
+#endif
+ return(False);
+}
+
+Bool
+_XUnknownCopyEventCookie(
+ Display *dpy, /* pointer to display structure */
+ XGenericEventCookie *in, /* source */
+ XGenericEventCookie *out) /* destination */
+{
+#ifdef notdef
+ fprintf(stderr,
+ "Xlib: unhandled cookie event copy! extension number = %d, display = %x\n.",
+ in->extension, dpy);
+#endif
+ return(False);
+}
+
+/*ARGSUSED*/
+Status
+_XUnknownNativeEvent(
+ register Display *dpy, /* pointer to display structure */
+ register XEvent *re, /* pointer to where event should be reformatted */
+ register xEvent *event) /* wire protocol event */
+{
+#ifdef notdef
+ (void) fprintf(stderr,
+ "Xlib: unhandled native event! event number = %d, display = %x\n.",
+ re->type, dpy);
+#endif
+ return(0);
+}
+/*
+ * reformat a wire event into an XEvent structure of the right type.
+ */
+Bool
+_XWireToEvent(
+ register Display *dpy, /* pointer to display structure */
+ register XEvent *re, /* pointer to where event should be reformatted */
+ register xEvent *event) /* wire protocol event */
+{
+
+ re->type = event->u.u.type & 0x7f;
+ ((XAnyEvent *)re)->serial = _XSetLastRequestRead(dpy,
+ (xGenericReply *)event);
+ ((XAnyEvent *)re)->send_event = ((event->u.u.type & 0x80) != 0);
+ ((XAnyEvent *)re)->display = dpy;
+
+ /* Ignore the leading bit of the event type since it is set when a
+ client sends an event rather than the server. */
+
+ switch (event-> u.u.type & 0177) {
+ case KeyPress:
+ case KeyRelease:
+ {
+ register XKeyEvent *ev = (XKeyEvent*) re;
+ ev->root = event->u.keyButtonPointer.root;
+ ev->window = event->u.keyButtonPointer.event;
+ ev->subwindow = event->u.keyButtonPointer.child;
+ ev->time = event->u.keyButtonPointer.time;
+ ev->x = cvtINT16toInt(event->u.keyButtonPointer.eventX);
+ ev->y = cvtINT16toInt(event->u.keyButtonPointer.eventY);
+ ev->x_root = cvtINT16toInt(event->u.keyButtonPointer.rootX);
+ ev->y_root = cvtINT16toInt(event->u.keyButtonPointer.rootY);
+ ev->state = event->u.keyButtonPointer.state;
+ ev->same_screen = event->u.keyButtonPointer.sameScreen;
+ ev->keycode = event->u.u.detail;
+ }
+ break;
+ case ButtonPress:
+ case ButtonRelease:
+ {
+ register XButtonEvent *ev = (XButtonEvent *) re;
+ ev->root = event->u.keyButtonPointer.root;
+ ev->window = event->u.keyButtonPointer.event;
+ ev->subwindow = event->u.keyButtonPointer.child;
+ ev->time = event->u.keyButtonPointer.time;
+ ev->x = cvtINT16toInt(event->u.keyButtonPointer.eventX);
+ ev->y = cvtINT16toInt(event->u.keyButtonPointer.eventY);
+ ev->x_root = cvtINT16toInt(event->u.keyButtonPointer.rootX);
+ ev->y_root = cvtINT16toInt(event->u.keyButtonPointer.rootY);
+ ev->state = event->u.keyButtonPointer.state;
+ ev->same_screen = event->u.keyButtonPointer.sameScreen;
+ ev->button = event->u.u.detail;
+ }
+ break;
+ case MotionNotify:
+ {
+ register XMotionEvent *ev = (XMotionEvent *)re;
+ ev->root = event->u.keyButtonPointer.root;
+ ev->window = event->u.keyButtonPointer.event;
+ ev->subwindow = event->u.keyButtonPointer.child;
+ ev->time = event->u.keyButtonPointer.time;
+ ev->x = cvtINT16toInt(event->u.keyButtonPointer.eventX);
+ ev->y = cvtINT16toInt(event->u.keyButtonPointer.eventY);
+ ev->x_root = cvtINT16toInt(event->u.keyButtonPointer.rootX);
+ ev->y_root = cvtINT16toInt(event->u.keyButtonPointer.rootY);
+ ev->state = event->u.keyButtonPointer.state;
+ ev->same_screen = event->u.keyButtonPointer.sameScreen;
+ ev->is_hint = event->u.u.detail;
+ }
+ break;
+ case EnterNotify:
+ case LeaveNotify:
+ {
+ register XCrossingEvent *ev = (XCrossingEvent *) re;
+ ev->root = event->u.enterLeave.root;
+ ev->window = event->u.enterLeave.event;
+ ev->subwindow = event->u.enterLeave.child;
+ ev->time = event->u.enterLeave.time;
+ ev->x = cvtINT16toInt(event->u.enterLeave.eventX);
+ ev->y = cvtINT16toInt(event->u.enterLeave.eventY);
+ ev->x_root = cvtINT16toInt(event->u.enterLeave.rootX);
+ ev->y_root = cvtINT16toInt(event->u.enterLeave.rootY);
+ ev->state = event->u.enterLeave.state;
+ ev->mode = event->u.enterLeave.mode;
+ ev->same_screen = (event->u.enterLeave.flags &
+ ELFlagSameScreen) && True;
+ ev->focus = (event->u.enterLeave.flags &
+ ELFlagFocus) && True;
+ ev->detail = event->u.u.detail;
+ }
+ break;
+ case FocusIn:
+ case FocusOut:
+ {
+ register XFocusChangeEvent *ev = (XFocusChangeEvent *) re;
+ ev->window = event->u.focus.window;
+ ev->mode = event->u.focus.mode;
+ ev->detail = event->u.u.detail;
+ }
+ break;
+ case KeymapNotify:
+ {
+ register XKeymapEvent *ev = (XKeymapEvent *) re;
+ ev->window = None;
+ memcpy(&ev->key_vector[1],
+ (char *)((xKeymapEvent *) event)->map,
+ sizeof (((xKeymapEvent *) event)->map));
+ }
+ break;
+ case Expose:
+ {
+ register XExposeEvent *ev = (XExposeEvent *) re;
+ ev->window = event->u.expose.window;
+ ev->x = event->u.expose.x;
+ ev->y = event->u.expose.y;
+ ev->width = event->u.expose.width;
+ ev->height = event->u.expose.height;
+ ev->count = event->u.expose.count;
+ }
+ break;
+ case GraphicsExpose:
+ {
+ register XGraphicsExposeEvent *ev =
+ (XGraphicsExposeEvent *) re;
+ ev->drawable = event->u.graphicsExposure.drawable;
+ ev->x = event->u.graphicsExposure.x;
+ ev->y = event->u.graphicsExposure.y;
+ ev->width = event->u.graphicsExposure.width;
+ ev->height = event->u.graphicsExposure.height;
+ ev->count = event->u.graphicsExposure.count;
+ ev->major_code = event->u.graphicsExposure.majorEvent;
+ ev->minor_code = event->u.graphicsExposure.minorEvent;
+ }
+ break;
+ case NoExpose:
+ {
+ register XNoExposeEvent *ev = (XNoExposeEvent *) re;
+ ev->drawable = event->u.noExposure.drawable;
+ ev->major_code = event->u.noExposure.majorEvent;
+ ev->minor_code = event->u.noExposure.minorEvent;
+ }
+ break;
+ case VisibilityNotify:
+ {
+ register XVisibilityEvent *ev = (XVisibilityEvent *) re;
+ ev->window = event->u.visibility.window;
+ ev->state = event->u.visibility.state;
+ }
+ break;
+ case CreateNotify:
+ {
+ register XCreateWindowEvent *ev =
+ (XCreateWindowEvent *) re;
+ ev->window = event->u.createNotify.window;
+ ev->parent = event->u.createNotify.parent;
+ ev->x = cvtINT16toInt(event->u.createNotify.x);
+ ev->y = cvtINT16toInt(event->u.createNotify.y);
+ ev->width = event->u.createNotify.width;
+ ev->height = event->u.createNotify.height;
+ ev->border_width = event->u.createNotify.borderWidth;
+ ev->override_redirect = event->u.createNotify.override;
+ }
+ break;
+ case DestroyNotify:
+ {
+ register XDestroyWindowEvent *ev =
+ (XDestroyWindowEvent *) re;
+ ev->window = event->u.destroyNotify.window;
+ ev->event = event->u.destroyNotify.event;
+ }
+ break;
+ case UnmapNotify:
+ {
+ register XUnmapEvent *ev = (XUnmapEvent *) re;
+ ev->window = event->u.unmapNotify.window;
+ ev->event = event->u.unmapNotify.event;
+ ev->from_configure = event->u.unmapNotify.fromConfigure;
+ }
+ break;
+ case MapNotify:
+ {
+ register XMapEvent *ev = (XMapEvent *) re;
+ ev->window = event->u.mapNotify.window;
+ ev->event = event->u.mapNotify.event;
+ ev->override_redirect = event->u.mapNotify.override;
+ }
+ break;
+ case MapRequest:
+ {
+ register XMapRequestEvent *ev = (XMapRequestEvent *) re;
+ ev->window = event->u.mapRequest.window;
+ ev->parent = event->u.mapRequest.parent;
+ }
+ break;
+ case ReparentNotify:
+ {
+ register XReparentEvent *ev = (XReparentEvent *) re;
+ ev->event = event->u.reparent.event;
+ ev->window = event->u.reparent.window;
+ ev->parent = event->u.reparent.parent;
+ ev->x = cvtINT16toInt(event->u.reparent.x);
+ ev->y = cvtINT16toInt(event->u.reparent.y);
+ ev->override_redirect = event->u.reparent.override;
+ }
+ break;
+ case ConfigureNotify:
+ {
+ register XConfigureEvent *ev = (XConfigureEvent *) re;
+ ev->event = event->u.configureNotify.event;
+ ev->window = event->u.configureNotify.window;
+ ev->above = event->u.configureNotify.aboveSibling;
+ ev->x = cvtINT16toInt(event->u.configureNotify.x);
+ ev->y = cvtINT16toInt(event->u.configureNotify.y);
+ ev->width = event->u.configureNotify.width;
+ ev->height = event->u.configureNotify.height;
+ ev->border_width = event->u.configureNotify.borderWidth;
+ ev->override_redirect = event->u.configureNotify.override;
+ }
+ break;
+ case ConfigureRequest:
+ {
+ register XConfigureRequestEvent *ev =
+ (XConfigureRequestEvent *) re;
+ ev->window = event->u.configureRequest.window;
+ ev->parent = event->u.configureRequest.parent;
+ ev->above = event->u.configureRequest.sibling;
+ ev->x = cvtINT16toInt(event->u.configureRequest.x);
+ ev->y = cvtINT16toInt(event->u.configureRequest.y);
+ ev->width = event->u.configureRequest.width;
+ ev->height = event->u.configureRequest.height;
+ ev->border_width = event->u.configureRequest.borderWidth;
+ ev->value_mask = event->u.configureRequest.valueMask;
+ ev->detail = event->u.u.detail;
+ }
+ break;
+ case GravityNotify:
+ {
+ register XGravityEvent *ev = (XGravityEvent *) re;
+ ev->window = event->u.gravity.window;
+ ev->event = event->u.gravity.event;
+ ev->x = cvtINT16toInt(event->u.gravity.x);
+ ev->y = cvtINT16toInt(event->u.gravity.y);
+ }
+ break;
+ case ResizeRequest:
+ {
+ register XResizeRequestEvent *ev =
+ (XResizeRequestEvent *) re;
+ ev->window = event->u.resizeRequest.window;
+ ev->width = event->u.resizeRequest.width;
+ ev->height = event->u.resizeRequest.height;
+ }
+ break;
+ case CirculateNotify:
+ {
+ register XCirculateEvent *ev = (XCirculateEvent *) re;
+ ev->window = event->u.circulate.window;
+ ev->event = event->u.circulate.event;
+ ev->place = event->u.circulate.place;
+ }
+ break;
+ case CirculateRequest:
+ {
+ register XCirculateRequestEvent *ev =
+ (XCirculateRequestEvent *) re;
+ ev->window = event->u.circulate.window;
+ ev->parent = event->u.circulate.event;
+ ev->place = event->u.circulate.place;
+ }
+ break;
+ case PropertyNotify:
+ {
+ register XPropertyEvent *ev = (XPropertyEvent *) re;
+ ev->window = event->u.property.window;
+ ev->atom = event->u.property.atom;
+ ev->time = event->u.property.time;
+ ev->state = event->u.property.state;
+ }
+ break;
+ case SelectionClear:
+ {
+ register XSelectionClearEvent *ev =
+ (XSelectionClearEvent *) re;
+ ev->window = event->u.selectionClear.window;
+ ev->selection = event->u.selectionClear.atom;
+ ev->time = event->u.selectionClear.time;
+ }
+ break;
+ case SelectionRequest:
+ {
+ register XSelectionRequestEvent *ev =
+ (XSelectionRequestEvent *) re;
+ ev->owner = event->u.selectionRequest.owner;
+ ev->requestor = event->u.selectionRequest.requestor;
+ ev->selection = event->u.selectionRequest.selection;
+ ev->target = event->u.selectionRequest.target;
+ ev->property = event->u.selectionRequest.property;
+ ev->time = event->u.selectionRequest.time;
+ }
+ break;
+ case SelectionNotify:
+ {
+ register XSelectionEvent *ev = (XSelectionEvent *) re;
+ ev->requestor = event->u.selectionNotify.requestor;
+ ev->selection = event->u.selectionNotify.selection;
+ ev->target = event->u.selectionNotify.target;
+ ev->property = event->u.selectionNotify.property;
+ ev->time = event->u.selectionNotify.time;
+ }
+ break;
+ case ColormapNotify:
+ {
+ register XColormapEvent *ev = (XColormapEvent *) re;
+ ev->window = event->u.colormap.window;
+ ev->colormap = event->u.colormap.colormap;
+ ev->new = event->u.colormap.new;
+ ev->state = event->u.colormap.state;
+ }
+ break;
+ case ClientMessage:
+ {
+ register int i;
+ register XClientMessageEvent *ev
+ = (XClientMessageEvent *) re;
+ ev->window = event->u.clientMessage.window;
+ ev->format = event->u.u.detail;
+ switch (ev->format) {
+ case 8:
+ ev->message_type = event->u.clientMessage.u.b.type;
+ for (i = 0; i < 20; i++)
+ ev->data.b[i] = event->u.clientMessage.u.b.bytes[i];
+ break;
+ case 16:
+ ev->message_type = event->u.clientMessage.u.s.type;
+ ev->data.s[0] = cvtINT16toShort(event->u.clientMessage.u.s.shorts0);
+ ev->data.s[1] = cvtINT16toShort(event->u.clientMessage.u.s.shorts1);
+ ev->data.s[2] = cvtINT16toShort(event->u.clientMessage.u.s.shorts2);
+ ev->data.s[3] = cvtINT16toShort(event->u.clientMessage.u.s.shorts3);
+ ev->data.s[4] = cvtINT16toShort(event->u.clientMessage.u.s.shorts4);
+ ev->data.s[5] = cvtINT16toShort(event->u.clientMessage.u.s.shorts5);
+ ev->data.s[6] = cvtINT16toShort(event->u.clientMessage.u.s.shorts6);
+ ev->data.s[7] = cvtINT16toShort(event->u.clientMessage.u.s.shorts7);
+ ev->data.s[8] = cvtINT16toShort(event->u.clientMessage.u.s.shorts8);
+ ev->data.s[9] = cvtINT16toShort(event->u.clientMessage.u.s.shorts9);
+ break;
+ case 32:
+ ev->message_type = event->u.clientMessage.u.l.type;
+ ev->data.l[0] = cvtINT32toLong(event->u.clientMessage.u.l.longs0);
+ ev->data.l[1] = cvtINT32toLong(event->u.clientMessage.u.l.longs1);
+ ev->data.l[2] = cvtINT32toLong(event->u.clientMessage.u.l.longs2);
+ ev->data.l[3] = cvtINT32toLong(event->u.clientMessage.u.l.longs3);
+ ev->data.l[4] = cvtINT32toLong(event->u.clientMessage.u.l.longs4);
+ break;
+ default: /* XXX should never occur */
+ break;
+ }
+ }
+ break;
+ case MappingNotify:
+ {
+ register XMappingEvent *ev = (XMappingEvent *)re;
+ ev->window = 0;
+ ev->first_keycode = event->u.mappingNotify.firstKeyCode;
+ ev->request = event->u.mappingNotify.request;
+ ev->count = event->u.mappingNotify.count;
+ }
+ break;
+ default:
+ return(_XUnknownWireEvent(dpy, re, event));
+ }
+ return(True);
+}
+
+
+/*
+ * _XDefaultIOError - Default fatal system error reporting routine. Called
+ * when an X internal system error is encountered.
+ */
+int _XDefaultIOError(
+ Display *dpy)
+{
+ if (ECHECK(EPIPE)) {
+ (void) fprintf (stderr,
+ "X connection to %s broken (explicit kill or server shutdown).\r\n",
+ DisplayString (dpy));
+ } else {
+ (void) fprintf (stderr,
+ "XIO: fatal IO error %d (%s) on X server \"%s\"\r\n",
+#ifdef WIN32
+ WSAGetLastError(), strerror(WSAGetLastError()),
+#else
+ errno, strerror (errno),
+#endif
+ DisplayString (dpy));
+ (void) fprintf (stderr,
+ " after %lu requests (%lu known processed) with %d events remaining.\r\n",
+ NextRequest(dpy) - 1, LastKnownRequestProcessed(dpy),
+ QLength(dpy));
+
+ }
+ exit(1);
+ return(0); /* dummy - function should never return */
+}
+
+
+static int _XPrintDefaultError(
+ Display *dpy,
+ XErrorEvent *event,
+ FILE *fp)
+{
+ char buffer[BUFSIZ];
+ char mesg[BUFSIZ];
+ char number[32];
+ const char *mtype = "XlibMessage";
+ register _XExtension *ext = (_XExtension *)NULL;
+ _XExtension *bext = (_XExtension *)NULL;
+ XGetErrorText(dpy, event->error_code, buffer, BUFSIZ);
+ XGetErrorDatabaseText(dpy, mtype, "XError", "X Error", mesg, BUFSIZ);
+ (void) fprintf(fp, "%s: %s\n ", mesg, buffer);
+ XGetErrorDatabaseText(dpy, mtype, "MajorCode", "Request Major code %d",
+ mesg, BUFSIZ);
+ (void) fprintf(fp, mesg, event->request_code);
+ if (event->request_code < 128) {
+ sprintf(number, "%d", event->request_code);
+ XGetErrorDatabaseText(dpy, "XRequest", number, "", buffer, BUFSIZ);
+ } else {
+ for (ext = dpy->ext_procs;
+ ext && (ext->codes.major_opcode != event->request_code);
+ ext = ext->next)
+ ;
+ if (ext)
+ strcpy(buffer, ext->name);
+ else
+ buffer[0] = '\0';
+ }
+ (void) fprintf(fp, " (%s)\n", buffer);
+ if (event->request_code >= 128) {
+ XGetErrorDatabaseText(dpy, mtype, "MinorCode", "Request Minor code %d",
+ mesg, BUFSIZ);
+ fputs(" ", fp);
+ (void) fprintf(fp, mesg, event->minor_code);
+ if (ext) {
+ sprintf(mesg, "%s.%d", ext->name, event->minor_code);
+ XGetErrorDatabaseText(dpy, "XRequest", mesg, "", buffer, BUFSIZ);
+ (void) fprintf(fp, " (%s)", buffer);
+ }
+ fputs("\n", fp);
+ }
+ if (event->error_code >= 128) {
+ /* kludge, try to find the extension that caused it */
+ buffer[0] = '\0';
+ for (ext = dpy->ext_procs; ext; ext = ext->next) {
+ if (ext->error_string)
+ (*ext->error_string)(dpy, event->error_code, &ext->codes,
+ buffer, BUFSIZ);
+ if (buffer[0]) {
+ bext = ext;
+ break;
+ }
+ if (ext->codes.first_error &&
+ ext->codes.first_error < (int)event->error_code &&
+ (!bext || ext->codes.first_error > bext->codes.first_error))
+ bext = ext;
+ }
+ if (bext)
+ sprintf(buffer, "%s.%d", bext->name,
+ event->error_code - bext->codes.first_error);
+ else
+ strcpy(buffer, "Value");
+ XGetErrorDatabaseText(dpy, mtype, buffer, "", mesg, BUFSIZ);
+ if (mesg[0]) {
+ fputs(" ", fp);
+ (void) fprintf(fp, mesg, event->resourceid);
+ fputs("\n", fp);
+ }
+ /* let extensions try to print the values */
+ for (ext = dpy->ext_procs; ext; ext = ext->next) {
+ if (ext->error_values)
+ (*ext->error_values)(dpy, event, fp);
+ }
+ } else if ((event->error_code == BadWindow) ||
+ (event->error_code == BadPixmap) ||
+ (event->error_code == BadCursor) ||
+ (event->error_code == BadFont) ||
+ (event->error_code == BadDrawable) ||
+ (event->error_code == BadColor) ||
+ (event->error_code == BadGC) ||
+ (event->error_code == BadIDChoice) ||
+ (event->error_code == BadValue) ||
+ (event->error_code == BadAtom)) {
+ if (event->error_code == BadValue)
+ XGetErrorDatabaseText(dpy, mtype, "Value", "Value 0x%x",
+ mesg, BUFSIZ);
+ else if (event->error_code == BadAtom)
+ XGetErrorDatabaseText(dpy, mtype, "AtomID", "AtomID 0x%x",
+ mesg, BUFSIZ);
+ else
+ XGetErrorDatabaseText(dpy, mtype, "ResourceID", "ResourceID 0x%x",
+ mesg, BUFSIZ);
+ fputs(" ", fp);
+ (void) fprintf(fp, mesg, event->resourceid);
+ fputs("\n", fp);
+ }
+ XGetErrorDatabaseText(dpy, mtype, "ErrorSerial", "Error Serial #%d",
+ mesg, BUFSIZ);
+ fputs(" ", fp);
+ (void) fprintf(fp, mesg, event->serial);
+ XGetErrorDatabaseText(dpy, mtype, "CurrentSerial", "Current Serial #%d",
+ mesg, BUFSIZ);
+ fputs("\n ", fp);
+ (void) fprintf(fp, mesg, dpy->request);
+ fputs("\n", fp);
+ if (event->error_code == BadImplementation) return 0;
+ return 1;
+}
+
+int _XDefaultError(
+ Display *dpy,
+ XErrorEvent *event)
+{
+ if (_XPrintDefaultError (dpy, event, stderr) == 0) return 0;
+ exit(1);
+ /*NOTREACHED*/
+}
+
+/*ARGSUSED*/
+Bool _XDefaultWireError(Display *display, XErrorEvent *he, xError *we)
+{
+ return True;
+}
+
+/*
+ * _XError - upcall internal or user protocol error handler
+ */
+int _XError (
+ Display *dpy,
+ register xError *rep)
+{
+ /*
+ * X_Error packet encountered! We need to unpack the error before
+ * giving it to the user.
+ */
+ XEvent event; /* make it a large event */
+ register _XAsyncHandler *async, *next;
+
+ event.xerror.serial = _XSetLastRequestRead(dpy, (xGenericReply *)rep);
+
+ for (async = dpy->async_handlers; async; async = next) {
+ next = async->next;
+ if ((*async->handler)(dpy, (xReply *)rep,
+ (char *)rep, SIZEOF(xError), async->data))
+ return 0;
+ }
+
+ event.xerror.display = dpy;
+ event.xerror.type = X_Error;
+ event.xerror.resourceid = rep->resourceID;
+ event.xerror.error_code = rep->errorCode;
+ event.xerror.request_code = rep->majorCode;
+ event.xerror.minor_code = rep->minorCode;
+ if (dpy->error_vec &&
+ !(*dpy->error_vec[rep->errorCode])(dpy, &event.xerror, rep))
+ return 0;
+ if (_XErrorFunction != NULL) {
+ int rtn_val;
+#if defined(XTHREADS) && !USE_XCB
+ if (dpy->lock)
+ (*dpy->lock->user_lock_display)(dpy);
+ UnlockDisplay(dpy);
+#endif /* XTHREADS && !USE_XCB */
+ rtn_val = (*_XErrorFunction)(dpy, (XErrorEvent *)&event); /* upcall */
+#if defined(XTHREADS) && !USE_XCB
+ LockDisplay(dpy);
+ if (dpy->lock)
+ (*dpy->lock->user_unlock_display)(dpy);
+#endif /* XTHREADS && !USE_XCB */
+ return rtn_val;
+ } else {
+ return _XDefaultError(dpy, (XErrorEvent *)&event);
+ }
+}
+
+/*
+ * _XIOError - call user connection error handler and exit
+ */
+int
+_XIOError (
+ Display *dpy)
+{
+ dpy->flags |= XlibDisplayIOError;
+#ifdef WIN32
+ errno = WSAGetLastError();
+#endif
+
+ /* This assumes that the thread calling exit will call any atexit handlers.
+ * If this does not hold, then an alternate solution would involve
+ * registering an atexit handler to take over the lock, which would only
+ * assume that the same thread calls all the atexit handlers. */
+#ifdef XTHREADS
+ if (dpy->lock)
+ (*dpy->lock->user_lock_display)(dpy);
+#endif
+ UnlockDisplay(dpy);
+
+ if (_XIOErrorFunction != NULL)
+ (*_XIOErrorFunction)(dpy);
+ else
+ _XDefaultIOError(dpy);
+ exit (1);
+ return 0;
+}
+
+
+/*
+ * This routine can be used to (cheaply) get some memory within a single
+ * Xlib routine for scratch space. A single buffer is reused each time
+ * if possible. To be MT safe, you can only call this between a call to
+ * GetReq* and a call to Data* or _XSend*, or in a context when the thread
+ * is guaranteed to not unlock the display.
+ */
+char *_XAllocScratch(
+ register Display *dpy,
+ unsigned long nbytes)
+{
+ if (nbytes > dpy->scratch_length) {
+ if (dpy->scratch_buffer) Xfree (dpy->scratch_buffer);
+ if ((dpy->scratch_buffer = Xmalloc((unsigned) nbytes)))
+ dpy->scratch_length = nbytes;
+ else dpy->scratch_length = 0;
+ }
+ return (dpy->scratch_buffer);
+}
+
+/*
+ * Scratch space allocator you can call any time, multiple times, and be
+ * MT safe, but you must hand the buffer back with _XFreeTemp.
+ */
+char *_XAllocTemp(
+ register Display *dpy,
+ unsigned long nbytes)
+{
+ char *buf;
+
+ buf = _XAllocScratch(dpy, nbytes);
+ dpy->scratch_buffer = NULL;
+ dpy->scratch_length = 0;
+ return buf;
+}
+
+void _XFreeTemp(
+ register Display *dpy,
+ char *buf,
+ unsigned long nbytes)
+{
+ if (dpy->scratch_buffer)
+ Xfree(dpy->scratch_buffer);
+ dpy->scratch_buffer = buf;
+ dpy->scratch_length = nbytes;
+}
+
+/*
+ * Given a visual id, find the visual structure for this id on this display.
+ */
+Visual *_XVIDtoVisual(
+ Display *dpy,
+ VisualID id)
+{
+ register int i, j, k;
+ register Screen *sp;
+ register Depth *dp;
+ register Visual *vp;
+ for (i = 0; i < dpy->nscreens; i++) {
+ sp = &dpy->screens[i];
+ for (j = 0; j < sp->ndepths; j++) {
+ dp = &sp->depths[j];
+ /* if nvisuals == 0 then visuals will be NULL */
+ for (k = 0; k < dp->nvisuals; k++) {
+ vp = &dp->visuals[k];
+ if (vp->visualid == id) return (vp);
+ }
+ }
+ }
+ return (NULL);
+}
+
+int
+XFree (void *data)
+{
+ Xfree (data);
+ return 1;
+}
+
+#ifdef _XNEEDBCOPYFUNC
+void _Xbcopy(b1, b2, length)
+ register char *b1, *b2;
+ register length;
+{
+ if (b1 < b2) {
+ b2 += length;
+ b1 += length;
+ while (length--)
+ *--b2 = *--b1;
+ } else {
+ while (length--)
+ *b2++ = *b1++;
+ }
+}
+#endif
+
+#ifdef DataRoutineIsProcedure
+void Data(
+ Display *dpy,
+ char *data,
+ long len)
+{
+ if (dpy->bufptr + (len) <= dpy->bufmax) {
+ memcpy(dpy->bufptr, data, (int)len);
+ dpy->bufptr += ((len) + 3) & ~3;
+ } else {
+ _XSend(dpy, data, len);
+ }
+}
+#endif /* DataRoutineIsProcedure */
+
+
+#ifdef LONG64
+int
+_XData32(
+ Display *dpy,
+ register long *data,
+ unsigned len)
+{
+ register int *buf;
+ register long i;
+
+ while (len) {
+ buf = (int *)dpy->bufptr;
+ i = dpy->bufmax - (char *)buf;
+ if (!i) {
+ _XFlush(dpy);
+ continue;
+ }
+ if (len < i)
+ i = len;
+ dpy->bufptr = (char *)buf + i;
+ len -= i;
+ i >>= 2;
+ while (--i >= 0)
+ *buf++ = *data++;
+ }
+ return 0;
+}
+#endif /* LONG64 */
+
+#ifdef WORD64
+
+/*
+ * XXX This is a *really* stupid way of doing this. It should just use
+ * dpy->bufptr directly, taking into account where in the word it is.
+ */
+
+/*
+ * Data16 - Place 16 bit data in the buffer.
+ *
+ * "dpy" is a pointer to a Display.
+ * "data" is a pointer to the data.
+ * "len" is the length in bytes of the data.
+ */
+
+static doData16(
+ register Display *dpy,
+ short *data,
+ unsigned len,
+ char *packbuffer)
+{
+ long *lp,*lpack;
+ long i, nwords,bits;
+ long mask16 = 0x000000000000ffff;
+
+ lp = (long *)data;
+ lpack = (long *)packbuffer;
+
+/* nwords is the number of 16 bit values to be packed,
+ * the low order 16 bits of each word will be packed
+ * into 64 bit words
+ */
+ nwords = len >> 1;
+ bits = 48;
+
+ for(i=0;i<nwords;i++){
+ if (bits == 48) *lpack = 0;
+ *lpack ^= (*lp & mask16) << bits;
+ bits -= 16 ;
+ lp++;
+ if(bits < 0){
+ lpack++;
+ bits = 48;
+ }
+ }
+ Data(dpy, packbuffer, len);
+}
+
+_XData16 (
+ Display *dpy,
+ short *data,
+ unsigned len)
+{
+ char packbuffer[PACKBUFFERSIZE];
+ unsigned nunits = PACKBUFFERSIZE >> 1;
+
+ for (; len > PACKBUFFERSIZE; len -= PACKBUFFERSIZE, data += nunits) {
+ doData16 (dpy, data, PACKBUFFERSIZE, packbuffer);
+ }
+ if (len) doData16 (dpy, data, len, packbuffer);
+}
+
+/*
+ * Data32 - Place 32 bit data in the buffer.
+ *
+ * "dpy" is a pointer to a Display.
+ * "data" is a pointer to the data.
+ * "len" is the length in bytes of the data.
+ */
+
+static doData32(
+ register Display *dpy
+ long *data,
+ unsigned len,
+ char *packbuffer)
+{
+ long *lp,*lpack;
+ long i,bits,nwords;
+ long mask32 = 0x00000000ffffffff;
+
+ lpack = (long *) packbuffer;
+ lp = data;
+
+/* nwords is the number of 32 bit values to be packed
+ * the low order 32 bits of each word will be packed
+ * into 64 bit words
+ */
+ nwords = len >> 2;
+ bits = 32;
+
+ for(i=0;i<nwords;i++){
+ if (bits == 32) *lpack = 0;
+ *lpack ^= (*lp & mask32) << bits;
+ bits = bits ^32;
+ lp++;
+ if(bits)
+ lpack++;
+ }
+ Data(dpy, packbuffer, len);
+}
+
+void _XData32(
+ Display *dpy,
+ long *data,
+ unsigned len)
+{
+ char packbuffer[PACKBUFFERSIZE];
+ unsigned nunits = PACKBUFFERSIZE >> 2;
+
+ for (; len > PACKBUFFERSIZE; len -= PACKBUFFERSIZE, data += nunits) {
+ doData32 (dpy, data, PACKBUFFERSIZE, packbuffer);
+ }
+ if (len) doData32 (dpy, data, len, packbuffer);
+}
+
+#endif /* WORD64 */
+
+
+/* Make sure this produces the same string as DefineLocal/DefineSelf in xdm.
+ * Otherwise, Xau will not be able to find your cookies in the Xauthority file.
+ *
+ * Note: POSIX says that the ``nodename'' member of utsname does _not_ have
+ * to have sufficient information for interfacing to the network,
+ * and so, you may be better off using gethostname (if it exists).
+ */
+
+#if (defined(_POSIX_SOURCE) && !defined(AIXV3) && !defined(__QNX__)) || defined(hpux) || defined(SVR4)
+#define NEED_UTSNAME
+#include <sys/utsname.h>
+#else
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#endif
+
+/*
+ * _XGetHostname - similar to gethostname but allows special processing.
+ */
+int _XGetHostname (
+ char *buf,
+ int maxlen)
+{
+ int len;
+
+#ifdef NEED_UTSNAME
+ struct utsname name;
+
+ if (maxlen <= 0 || buf == NULL)
+ return 0;
+
+ uname (&name);
+ len = strlen (name.nodename);
+ if (len >= maxlen) len = maxlen - 1;
+ strncpy (buf, name.nodename, len);
+ buf[len] = '\0';
+#else
+ if (maxlen <= 0 || buf == NULL)
+ return 0;
+
+ buf[0] = '\0';
+ (void) gethostname (buf, maxlen);
+ buf [maxlen - 1] = '\0';
+ len = strlen(buf);
+#endif /* NEED_UTSNAME */
+ return len;
+}
+
+
+/*
+ * _XScreenOfWindow - get the Screen of a given window
+ */
+
+Screen *_XScreenOfWindow(Display *dpy, Window w)
+{
+ register int i;
+ Window root;
+ int x, y; /* dummy variables */
+ unsigned int width, height, bw, depth; /* dummy variables */
+
+ if (XGetGeometry (dpy, w, &root, &x, &y, &width, &height,
+ &bw, &depth) == False) {
+ return NULL;
+ }
+ for (i = 0; i < ScreenCount (dpy); i++) { /* find root from list */
+ if (root == RootWindow (dpy, i)) {
+ return ScreenOfDisplay (dpy, i);
+ }
+ }
+ return NULL;
+}
+
+
+#if defined(WIN32)
+
+/*
+ * These functions are intended to be used internally to Xlib only.
+ * These functions will always prefix the path with a DOS drive in the
+ * form "<drive-letter>:". As such, these functions are only suitable
+ * for use by Xlib function that supply a root-based path to some
+ * particular file, e.g. <ProjectRoot>/lib/X11/locale/locale.dir will
+ * be converted to "C:/usr/X11R6.3/lib/X11/locale/locale.dir".
+ */
+
+static int access_file (path, pathbuf, len_pathbuf, pathret)
+ char* path;
+ char* pathbuf;
+ int len_pathbuf;
+ char** pathret;
+{
+ if (access (path, F_OK) == 0) {
+ if (strlen (path) < len_pathbuf)
+ *pathret = pathbuf;
+ else
+ *pathret = Xmalloc (strlen (path) + 1);
+ if (*pathret) {
+ strcpy (*pathret, path);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int AccessFile (path, pathbuf, len_pathbuf, pathret)
+ char* path;
+ char* pathbuf;
+ int len_pathbuf;
+ char** pathret;
+{
+ unsigned long drives;
+ int i, len;
+ char* drive;
+ char buf[MAX_PATH];
+ char* bufp;
+
+ /* just try the "raw" name first and see if it works */
+ if (access_file (path, pathbuf, len_pathbuf, pathret))
+ return 1;
+
+ /* try the places set in the environment */
+ drive = getenv ("_XBASEDRIVE");
+#ifdef __UNIXOS2__
+ if (!drive)
+ drive = getenv ("X11ROOT");
+#endif
+ if (!drive)
+ drive = "C:";
+ len = strlen (drive) + strlen (path);
+ if (len < MAX_PATH) bufp = buf;
+ else bufp = Xmalloc (len + 1);
+ strcpy (bufp, drive);
+ strcat (bufp, path);
+ if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
+ if (bufp != buf) Xfree (bufp);
+ return 1;
+ }
+
+#ifndef __UNIXOS2__
+ /* one last place to look */
+ drive = getenv ("HOMEDRIVE");
+ if (drive) {
+ len = strlen (drive) + strlen (path);
+ if (len < MAX_PATH) bufp = buf;
+ else bufp = Xmalloc (len + 1);
+ strcpy (bufp, drive);
+ strcat (bufp, path);
+ if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
+ if (bufp != buf) Xfree (bufp);
+ return 1;
+ }
+ }
+
+ /* tried everywhere else, go fishing */
+#define C_DRIVE ('C' - 'A')
+#define Z_DRIVE ('Z' - 'A')
+ /* does OS/2 (with or with gcc-emx) have getdrives? */
+ drives = _getdrives ();
+ for (i = C_DRIVE; i <= Z_DRIVE; i++) { /* don't check on A: or B: */
+ if ((1 << i) & drives) {
+ len = 2 + strlen (path);
+ if (len < MAX_PATH) bufp = buf;
+ else bufp = Xmalloc (len + 1);
+ *bufp = 'A' + i;
+ *(bufp + 1) = ':';
+ *(bufp + 2) = '\0';
+ strcat (bufp, path);
+ if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
+ if (bufp != buf) Xfree (bufp);
+ return 1;
+ }
+ }
+ }
+#endif
+ return 0;
+}
+
+int _XOpenFile(path, flags)
+ _Xconst char* path;
+ int flags;
+{
+ char buf[MAX_PATH];
+ char* bufp = NULL;
+ int ret = -1;
+ UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS);
+
+ if (AccessFile (path, buf, MAX_PATH, &bufp))
+ ret = open (bufp, flags);
+
+ (void) SetErrorMode (olderror);
+
+ if (bufp != buf) Xfree (bufp);
+
+ return ret;
+}
+
+int _XOpenFileMode(path, flags, mode)
+ _Xconst char* path;
+ int flags;
+ mode_t mode;
+{
+ char buf[MAX_PATH];
+ char* bufp = NULL;
+ int ret = -1;
+ UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS);
+
+ if (AccessFile (path, buf, MAX_PATH, &bufp))
+ ret = open (bufp, flags, mode);
+
+ (void) SetErrorMode (olderror);
+
+ if (bufp != buf) Xfree (bufp);
+
+ return ret;
+}
+
+void* _XFopenFile(path, mode)
+ _Xconst char* path;
+ _Xconst char* mode;
+{
+ char buf[MAX_PATH];
+ char* bufp = NULL;
+ void* ret = NULL;
+ UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS);
+
+ if (AccessFile (path, buf, MAX_PATH, &bufp))
+ ret = fopen (bufp, mode);
+
+ (void) SetErrorMode (olderror);
+
+ if (bufp != buf) Xfree (bufp);
+
+ return ret;
+}
+
+int _XAccessFile(path)
+ _Xconst char* path;
+{
+ char buf[MAX_PATH];
+ char* bufp;
+ int ret = -1;
+ UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS);
+
+ ret = AccessFile (path, buf, MAX_PATH, &bufp);
+
+ (void) SetErrorMode (olderror);
+
+ if (bufp != buf) Xfree (bufp);
+
+ return ret;
+}
+
+#endif
+
+#ifdef WIN32
+#undef _Xdebug
+int _Xdebug = 0;
+int *_Xdebug_p = &_Xdebug;
+void (**_XCreateMutex_fn_p)(LockInfoPtr) = &_XCreateMutex_fn;
+void (**_XFreeMutex_fn_p)(LockInfoPtr) = &_XFreeMutex_fn;
+void (**_XLockMutex_fn_p)(LockInfoPtr
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+ , char * /* file */
+ , int /* line */
+#endif
+ ) = &_XLockMutex_fn;
+void (**_XUnlockMutex_fn_p)(LockInfoPtr
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+ , char * /* file */
+ , int /* line */
+#endif
+ ) = &_XUnlockMutex_fn;
+LockInfoPtr *_Xglobal_lock_p = &_Xglobal_lock;
+#endif
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