diff options
Diffstat (limited to 'nx-X11/lib/Xt/Threads.c')
| -rw-r--r-- | nx-X11/lib/Xt/Threads.c | 428 |
1 files changed, 0 insertions, 428 deletions
diff --git a/nx-X11/lib/Xt/Threads.c b/nx-X11/lib/Xt/Threads.c deleted file mode 100644 index aad17ca79..000000000 --- a/nx-X11/lib/Xt/Threads.c +++ /dev/null @@ -1,428 +0,0 @@ -/* $Xorg: Threads.c,v 1.4 2001/02/09 02:03:59 xorgcvs Exp $ */ - -/************************************************************ -Copyright 1993 by Sun Microsystems, Inc. Mountain View, CA. - - All Rights Reserved - -Permission to use, copy, modify, and distribute this -software and its documentation for any purpose and without -fee is hereby granted, provided that the above copyright no- -tice appear in all copies and that both that copyright no- -tice and this permission notice appear in supporting docu- -mentation, and that the name Sun not be used in advertising -or publicity pertaining to distribution of the software -without specific prior written permission. Sun makes no -representations about the suitability of this software for -any purpose. It is provided "as is" without any express or -implied warranty. - -SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, -INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- -NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE LI- -ABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR -PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR -OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH -THE USE OR PERFORMANCE OF THIS SOFTWARE. - -********************************************************/ - -/* - -Copyright 1994, 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. - -*/ -/* $XFree86: xc/lib/Xt/Threads.c,v 3.6 2001/12/14 19:56:31 dawes Exp $ */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "IntrinsicI.h" - -#ifdef XTHREADS - -#define xmalloc __XtMalloc -#define xfree XtFree -#include <X11/Xthreads.h> - -#ifndef NDEBUG -#define NDEBUG -#endif -#include <assert.h> -#include <stdio.h> - -typedef struct _ThreadStack { - unsigned int size; - int sp; - struct _Tstack { - xthread_t t; - xcondition_t c; - } *st; -} ThreadStack; - -typedef struct _LockRec { - xmutex_t mutex; - int level; - ThreadStack stack; -#ifndef _XMUTEX_NESTS - xthread_t holder; - xcondition_t cond; -#endif -} LockRec; - - -#define STACK_INCR 16 - -static LockPtr process_lock = NULL; - -static void -InitProcessLock(void) -{ - if(!process_lock) { - process_lock = XtNew(LockRec); - process_lock->mutex = xmutex_malloc(); - xmutex_init(process_lock->mutex); - process_lock->level = 0; -#ifndef _XMUTEX_NESTS - process_lock->cond = xcondition_malloc(); - xcondition_init(process_lock->cond); - xthread_clear_id(process_lock->holder); -#endif - } -} - -static void -ProcessLock(void) -{ -#ifdef _XMUTEX_NESTS - xmutex_lock(process_lock->mutex); - process_lock->level++; -#else - xthread_t this_thread = xthread_self(); - - xmutex_lock(process_lock->mutex); - - if (!xthread_have_id(process_lock->holder)) { - process_lock->holder = this_thread; - xmutex_unlock(process_lock->mutex); - return; - } - - if (xthread_equal(process_lock->holder,this_thread)) { - process_lock->level++; - xmutex_unlock(process_lock->mutex); - return; - } - - while(xthread_have_id(process_lock->holder)) - xcondition_wait(process_lock->cond, process_lock->mutex); - - process_lock->holder = this_thread; - assert(xthread_equal(process_lock->holder, this_thread)); - xmutex_unlock(process_lock->mutex); -#endif -} - -static void -ProcessUnlock(void) -{ -#ifdef _XMUTEX_NESTS - process_lock->level--; - xmutex_unlock(process_lock->mutex); -#else - xmutex_lock(process_lock->mutex); - assert(xthread_equal(process_lock->holder, xthread_self())); - if (process_lock->level != 0) { - process_lock->level--; - xmutex_unlock(process_lock->mutex); - return; - } - - xthread_clear_id(process_lock->holder); - xcondition_signal(process_lock->cond); - - xmutex_unlock(process_lock->mutex); -#endif -} - - -static void -AppLock(XtAppContext app) -{ - LockPtr app_lock = app->lock_info; -#ifdef _XMUTEX_NESTS - xmutex_lock(app_lock->mutex); - app_lock->level++; -#else - xthread_t self = xthread_self(); - xmutex_lock(app_lock->mutex); - if (!xthread_have_id(app_lock->holder)) { - app_lock->holder = self; - assert(xthread_equal(app_lock->holder, self)); - xmutex_unlock(app_lock->mutex); - return; - } - if (xthread_equal(app_lock->holder, self)) { - app_lock->level++; - xmutex_unlock(app_lock->mutex); - return; - } - while(xthread_have_id(app_lock->holder)) { - xcondition_wait(app_lock->cond, app_lock->mutex); - } - app_lock->holder = self; - assert(xthread_equal(app_lock->holder, self)); - xmutex_unlock(app_lock->mutex); -#endif -} - -static void -AppUnlock(XtAppContext app) -{ - LockPtr app_lock = app->lock_info; -#ifdef _XMUTEX_NESTS - app_lock->level--; - xmutex_unlock(app_lock->mutex); -#else - xthread_t self; - - self = xthread_self(); - xmutex_lock(app_lock->mutex); - assert(xthread_equal(app_lock->holder, self)); - if (app_lock->level != 0) { - app_lock->level--; - xmutex_unlock(app_lock->mutex); - return; - } - xthread_clear_id(app_lock->holder); - xcondition_signal(app_lock->cond); - xmutex_unlock(app_lock->mutex); -#endif -} - -static void -YieldAppLock( - XtAppContext app, - Boolean* push_thread, - Boolean* pushed_thread, - int* level) -{ - LockPtr app_lock = app->lock_info; - xthread_t self = xthread_self(); -#ifndef _XMUTEX_NESTS - xmutex_lock(app_lock->mutex); - assert(xthread_equal(app_lock->holder, self)); -#endif - *level = app_lock->level; - if (*push_thread) { - *push_thread = FALSE; - *pushed_thread = TRUE; - - if(app_lock->stack.sp == (int)app_lock->stack.size - 1) { - unsigned ii; - app_lock->stack.st = (struct _Tstack *) - XtRealloc ((char *)app_lock->stack.st, - (app_lock->stack.size + STACK_INCR) * sizeof (struct _Tstack)); - ii = app_lock->stack.size; - app_lock->stack.size += STACK_INCR; - for ( ; ii < app_lock->stack.size; ii++) { - app_lock->stack.st[ii].c = xcondition_malloc(); - xcondition_init(app_lock->stack.st[ii].c); - } - } - app_lock->stack.st[++(app_lock->stack.sp)].t = self; - } -#ifdef _XMUTEX_NESTS - while (app_lock->level > 0) { - app_lock->level--; - xmutex_unlock(app_lock->mutex); - } -#else - xcondition_signal(app_lock->cond); - app_lock->level = 0; - xthread_clear_id(app_lock->holder); - xmutex_unlock(app_lock->mutex); -#endif -} - -static void -RestoreAppLock( - XtAppContext app, - int level, - Boolean* pushed_thread) -{ - LockPtr app_lock = app->lock_info; - xthread_t self = xthread_self(); - xmutex_lock(app_lock->mutex); -#ifdef _XMUTEX_NESTS - app_lock->level++; -#else - while(xthread_have_id(app_lock->holder)) { - xcondition_wait(app_lock->cond, app_lock->mutex); - } -#endif - if (!xthread_equal(app_lock->stack.st[app_lock->stack.sp].t, self)) { - int ii; - for (ii = app_lock->stack.sp - 1; ii >= 0; ii--) { - if (xthread_equal(app_lock->stack.st[ii].t, self)) { - xcondition_wait(app_lock->stack.st[ii].c, app_lock->mutex); - break; - } - } -#ifndef _XMUTEX_NESTS - while(xthread_have_id(app_lock->holder)) { - xcondition_wait(app_lock->cond, app_lock->mutex); - } -#endif - } -#ifdef _XMUTEX_NESTS - while (app_lock->level < level) { - xmutex_lock(app_lock->mutex); - app_lock->level++; - } -#else - app_lock->holder = self; - app_lock->level = level; - assert(xthread_equal(app_lock->holder, self)); -#endif - if (*pushed_thread) { - *pushed_thread = FALSE; - (app_lock->stack.sp)--; - if (app_lock->stack.sp >= 0) { - xcondition_signal (app_lock->stack.st[app_lock->stack.sp].c); - } - } -#ifndef _XMUTEX_NESTS - xmutex_unlock(app_lock->mutex); -#endif -} - -static void -FreeAppLock(XtAppContext app) -{ - unsigned ii; - LockPtr app_lock = app->lock_info; - - if(app_lock) { - xmutex_clear(app_lock->mutex); - xmutex_free(app_lock->mutex); -#ifndef _XMUTEX_NESTS - xcondition_clear(app_lock->cond); - xcondition_free(app_lock->cond); -#endif - if(app_lock->stack.st != (struct _Tstack *)NULL) { - for (ii = 0; ii < app_lock->stack.size; ii++) { - xcondition_clear(app_lock->stack.st[ii].c); - xcondition_free(app_lock->stack.st[ii].c); - } - XtFree((char *)app_lock->stack.st); - } - XtFree((char *)app_lock); - app->lock_info = NULL; - } -} - -static void -InitAppLock(XtAppContext app) -{ - int ii; - LockPtr app_lock; - - app->lock = AppLock; - app->unlock = AppUnlock; - app->yield_lock = YieldAppLock; - app->restore_lock = RestoreAppLock; - app->free_lock = FreeAppLock; - - app_lock = app->lock_info = XtNew(LockRec); - app_lock->mutex = xmutex_malloc(); - xmutex_init(app_lock->mutex); - app_lock->level = 0; -#ifndef _XMUTEX_NESTS - app_lock->cond = xcondition_malloc(); - xcondition_init(app_lock->cond); - xthread_clear_id(app_lock->holder); -#endif - app_lock->stack.size = STACK_INCR; - app_lock->stack.sp = -1; - app_lock->stack.st = - (struct _Tstack *)__XtMalloc(sizeof(struct _Tstack)*STACK_INCR); - for (ii = 0; ii < STACK_INCR; ii++) { - app_lock->stack.st[ii].c = xcondition_malloc(); - xcondition_init(app_lock->stack.st[ii].c); - } -} - -#endif /* defined(XTHREADS) */ - -void XtAppLock(XtAppContext app) -{ -#ifdef XTHREADS - if(app->lock) - (*app->lock)(app); -#endif -} - -void XtAppUnlock(XtAppContext app) -{ -#ifdef XTHREADS - if(app->unlock) - (*app->unlock)(app); -#endif -} - -void XtProcessLock(void) -{ -#ifdef XTHREADS - if(_XtProcessLock) - (*_XtProcessLock)(); -#endif -} - -void XtProcessUnlock(void) -{ -#ifdef XTHREADS - if(_XtProcessUnlock) - (*_XtProcessUnlock)(); -#endif -} - -Boolean XtToolkitThreadInitialize(void) -{ -#ifdef XTHREADS - if (_XtProcessLock == NULL) { -#ifdef xthread_init - xthread_init(); -#endif - InitProcessLock(); - _XtProcessLock = ProcessLock; - _XtProcessUnlock = ProcessUnlock; - _XtInitAppLock = InitAppLock; - } - return True; -#else - return False; -#endif -} - |