diff options
Diffstat (limited to 'libxcb/src/xcb_in.c')
| -rw-r--r-- | libxcb/src/xcb_in.c | 123 |
1 files changed, 92 insertions, 31 deletions
diff --git a/libxcb/src/xcb_in.c b/libxcb/src/xcb_in.c index 40c32bbbd..9d893ae64 100644 --- a/libxcb/src/xcb_in.c +++ b/libxcb/src/xcb_in.c @@ -28,11 +28,9 @@ #include <assert.h> #include <string.h> #include <stdlib.h> -#include <stdio.h> -#ifndef _MSC_VER #include <unistd.h> -#include <sys/select.h> -#else +#include <stdio.h> +#ifdef _MSC_VER #include <X11/Xwinsock.h> #endif #include <errno.h> @@ -40,9 +38,17 @@ #include "xcb.h" #include "xcbext.h" #include "xcbint.h" +#ifndef _MSC_VER +#if USE_POLL +#include <poll.h> +#else +#include <sys/select.h> +#endif +#endif #define XCB_ERROR 0 #define XCB_REPLY 1 +#define XCB_XGE_EVENT 35 struct event_list { xcb_generic_event_t *event; @@ -55,7 +61,8 @@ struct reply_list { }; typedef struct pending_reply { - unsigned int request; + uint64_t first_request; + uint64_t last_request; enum workarounds workaround; int flags; struct pending_reply *next; @@ -81,6 +88,7 @@ static int read_packet(xcb_connection_t *c) { xcb_generic_reply_t genrep; int length = 32; + int eventlength = 0; /* length after first 32 bytes for GenericEvents */ void *buf; pending_reply *pend = 0; struct event_list *event; @@ -95,8 +103,8 @@ static int read_packet(xcb_connection_t *c) /* Compute 32-bit sequence number of this packet. */ if((genrep.response_type & 0x7f) != XCB_KEYMAP_NOTIFY) { - unsigned int lastread = c->in.request_read; - c->in.request_read = (lastread & 0xffff0000) | genrep.sequence; + uint64_t lastread = c->in.request_read; + c->in.request_read = (lastread & UINT64_C(0xffffffffffff0000)) | genrep.sequence; if(XCB_SEQUENCE_COMPARE(c->in.request_read, <, lastread)) c->in.request_read += 0x10000; if(XCB_SEQUENCE_COMPARE(c->in.request_read, >, c->in.request_expected)) @@ -114,7 +122,8 @@ static int read_packet(xcb_connection_t *c) } while(c->in.pending_replies && - XCB_SEQUENCE_COMPARE (c->in.pending_replies->request, <=, c->in.request_completed)) + c->in.pending_replies->workaround != WORKAROUND_EXTERNAL_SOCKET_OWNER && + XCB_SEQUENCE_COMPARE (c->in.pending_replies->last_request, <=, c->in.request_completed)) { pending_reply *oldpend = c->in.pending_replies; c->in.pending_replies = oldpend->next; @@ -130,7 +139,10 @@ static int read_packet(xcb_connection_t *c) if(genrep.response_type == XCB_ERROR || genrep.response_type == XCB_REPLY) { pend = c->in.pending_replies; - if(pend && pend->request != c->in.request_read) + if(pend && + !(XCB_SEQUENCE_COMPARE(pend->first_request, <=, c->in.request_read) && + (pend->workaround == WORKAROUND_EXTERNAL_SOCKET_OWNER || + XCB_SEQUENCE_COMPARE(c->in.request_read, <=, pend->last_request)))) pend = 0; } @@ -145,17 +157,36 @@ static int read_packet(xcb_connection_t *c) length += genrep.length * 4; } - buf = malloc(length + (genrep.response_type == XCB_REPLY ? 0 : sizeof(uint32_t))); + /* XGE events may have sizes > 32 */ + if (genrep.response_type == XCB_XGE_EVENT) + { + eventlength = ((xcb_ge_event_t*)&genrep)->length * 4; + } + + buf = malloc(length + eventlength + + (genrep.response_type == XCB_REPLY ? 0 : sizeof(uint32_t))); if(!buf) { _xcb_conn_shutdown(c); return 0; } + if(_xcb_in_read_block(c, buf, length) <= 0) { free(buf); return 0; } + + /* pull in XGE event data if available, append after event struct */ + if (eventlength) + { + if(_xcb_in_read_block(c, &((xcb_generic_event_t*)buf)[1], eventlength) <= 0) + { + free(buf); + return 0; + } + } + if(pend && (pend->flags & XCB_REQUEST_DISCARD_REPLY)) { free(buf); @@ -174,6 +205,7 @@ static int read_packet(xcb_connection_t *c) if(!cur) { _xcb_conn_shutdown(c); + free(buf); return 0; } cur->reply = buf; @@ -182,10 +214,10 @@ static int read_packet(xcb_connection_t *c) c->in.current_reply_tail = &cur->next; for(reader = c->in.readers; reader && - XCB_SEQUENCE_COMPARE(reader->request, <=, c->in.request_read); + XCB_SEQUENCE_COMPARE_32(reader->request, <=, c->in.request_read); reader = reader->next) { - if(reader->request == c->in.request_read) + if(XCB_SEQUENCE_COMPARE_32(reader->request, ==, c->in.request_read)) { pthread_cond_signal(reader->data); break; @@ -235,7 +267,7 @@ static void free_reply_list(struct reply_list *head) } } -static int read_block(const int fd, void *buf, const size_t len) +static int read_block(const int fd, void *buf, const ssize_t len) { #ifdef _MSC_VER int done = 0; @@ -276,12 +308,22 @@ static int read_block(const int fd, void *buf, const size_t len) done += ret; if(ret < 0 && errno == EAGAIN) { +#if USE_POLL + struct pollfd pfd; + pfd.fd = fd; + pfd.events = POLLIN; + pfd.revents = 0; + do { + ret = poll(&pfd, 1, -1); + } while (ret == -1 && errno == EINTR); +#else fd_set fds; FD_ZERO(&fds); FD_SET(fd, &fds); do { ret = select(fd + 1, &fds, 0, 0, 0); } while (ret == -1 && errno == EINTR); +#endif } if(ret <= 0) return ret; @@ -299,7 +341,7 @@ static int poll_for_reply(xcb_connection_t *c, unsigned int request, void **repl head = 0; /* We've read requests past the one we want, so if it has replies we have * them all and they're in the replies map. */ - else if(XCB_SEQUENCE_COMPARE(request, <, c->in.request_read)) + else if(XCB_SEQUENCE_COMPARE_32(request, <, c->in.request_read)) { head = _xcb_map_remove(c->in.replies, request); if(head && head->next) @@ -307,7 +349,7 @@ static int poll_for_reply(xcb_connection_t *c, unsigned int request, void **repl } /* We're currently processing the responses to the request we want, and we * have a reply ready to return. So just return it without blocking. */ - else if(request == c->in.request_read && c->in.current_reply) + else if(XCB_SEQUENCE_COMPARE_32(request, ==, c->in.request_read) && c->in.current_reply) { head = c->in.current_reply; c->in.current_reply = head->next; @@ -316,7 +358,7 @@ static int poll_for_reply(xcb_connection_t *c, unsigned int request, void **repl } /* We know this request can't have any more replies, and we've already * established it doesn't have a reply now. Don't bother blocking. */ - else if(request == c->in.request_completed) + else if(XCB_SEQUENCE_COMPARE_32(request, ==, c->in.request_completed)) head = 0; /* We may have more replies on the way for this request: block until we're * sure. */ @@ -349,16 +391,21 @@ static int poll_for_reply(xcb_connection_t *c, unsigned int request, void **repl void *xcb_wait_for_reply(xcb_connection_t *c, unsigned int request, xcb_generic_error_t **e) { + uint64_t widened_request; void *ret = 0; if(e) *e = 0; if(c->has_error) return 0; - _xcb_lock_io(c); + pthread_mutex_lock(&c->iolock); + + widened_request = (c->out.request & UINT64_C(0xffffffff00000000)) | request; + if(widened_request > c->out.request) + widened_request -= UINT64_C(1) << 32; /* If this request has not been written yet, write it. */ - if(_xcb_out_flush_to(c, request)) + if(c->out.return_socket || _xcb_out_flush_to(c, widened_request)) { pthread_cond_t cond = PTHREAD_COND_INITIALIZER; reader_list reader; @@ -366,7 +413,7 @@ void *xcb_wait_for_reply(xcb_connection_t *c, unsigned int request, xcb_generic_ for(prev_reader = &c->in.readers; *prev_reader && - XCB_SEQUENCE_COMPARE ((*prev_reader)->request, <=, request); + XCB_SEQUENCE_COMPARE_32((*prev_reader)->request, <=, request); prev_reader = &(*prev_reader)->next) { /* empty */; @@ -382,7 +429,7 @@ void *xcb_wait_for_reply(xcb_connection_t *c, unsigned int request, xcb_generic_ for(prev_reader = &c->in.readers; *prev_reader && - XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, request); + XCB_SEQUENCE_COMPARE_32((*prev_reader)->request, <=, request); prev_reader = &(*prev_reader)->next) { if(*prev_reader == &reader) @@ -395,7 +442,7 @@ void *xcb_wait_for_reply(xcb_connection_t *c, unsigned int request, xcb_generic_ } wake_up_next_reader(c); - _xcb_unlock_io(c); + pthread_mutex_unlock(&c->iolock); return ret; } @@ -410,9 +457,9 @@ int xcb_poll_for_reply(xcb_connection_t *c, unsigned int request, void **reply, return 1; /* would not block */ } assert(reply != 0); - _xcb_lock_io(c); + pthread_mutex_lock(&c->iolock); ret = poll_for_reply(c, request, reply, error); - _xcb_unlock_io(c); + pthread_mutex_unlock(&c->iolock); return ret; } @@ -421,14 +468,14 @@ xcb_generic_event_t *xcb_wait_for_event(xcb_connection_t *c) xcb_generic_event_t *ret; if(c->has_error) return 0; - _xcb_lock_io(c); + pthread_mutex_lock(&c->iolock); /* get_event returns 0 on empty list. */ while(!(ret = get_event(c))) if(!_xcb_conn_wait(c, &c->in.event_cond, 0, 0)) break; wake_up_next_reader(c); - _xcb_unlock_io(c); + pthread_mutex_unlock(&c->iolock); return ret; } @@ -437,12 +484,12 @@ xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c) xcb_generic_event_t *ret = 0; if(!c->has_error) { - _xcb_lock_io(c); + pthread_mutex_lock(&c->iolock); /* FIXME: follow X meets Z architecture changes. */ ret = get_event(c); if(!ret && _xcb_in_read(c)) /* _xcb_in_read shuts down the connection on error */ ret = get_event(c); - _xcb_unlock_io(c); + pthread_mutex_unlock(&c->iolock); } return ret; } @@ -456,8 +503,8 @@ xcb_generic_error_t *xcb_request_check(xcb_connection_t *c, xcb_void_cookie_t co void *reply; if(c->has_error) return 0; - if(XCB_SEQUENCE_COMPARE(cookie.sequence,>,c->in.request_expected) - && XCB_SEQUENCE_COMPARE(cookie.sequence,>,c->in.request_completed)) + if(XCB_SEQUENCE_COMPARE_32(cookie.sequence,>,c->in.request_expected) + && XCB_SEQUENCE_COMPARE_32(cookie.sequence,>,c->in.request_completed)) { free(xcb_get_input_focus_reply(c, xcb_get_input_focus(c), &ret)); assert(!ret); @@ -511,7 +558,7 @@ void _xcb_in_destroy(_xcb_in *in) } } -int _xcb_in_expect_reply(xcb_connection_t *c, unsigned int request, enum workarounds workaround, int flags) +int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags) { pending_reply *pend = malloc(sizeof(pending_reply)); assert(workaround != WORKAROUND_NONE || flags != 0); @@ -520,7 +567,7 @@ int _xcb_in_expect_reply(xcb_connection_t *c, unsigned int request, enum workaro _xcb_conn_shutdown(c); return 0; } - pend->request = request; + pend->first_request = pend->last_request = request; pend->workaround = workaround; pend->flags = flags; pend->next = 0; @@ -529,6 +576,20 @@ int _xcb_in_expect_reply(xcb_connection_t *c, unsigned int request, enum workaro return 1; } +void _xcb_in_replies_done(xcb_connection_t *c) +{ + struct pending_reply *pend; + if (c->in.pending_replies_tail != &c->in.pending_replies) + { + pend = container_of(c->in.pending_replies_tail, struct pending_reply, next); + if(pend->workaround == WORKAROUND_EXTERNAL_SOCKET_OWNER) + { + pend->last_request = c->out.request; + pend->workaround = WORKAROUND_NONE; + } + } +} + int _xcb_in_read(xcb_connection_t *c) { int n = recv(c->fd, c->in.queue + c->in.queue_len, sizeof(c->in.queue) - c->in.queue_len,0); //MH |