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* Mesa 3-D graphics library
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* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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* XXX There's probably some work to do in order to make this file
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* truly reusable outside of Mesa. First, the glheader.h include must go.
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#include "glapi/mesa.h"
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#include "main/compiler.h"
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#include "glapi/glthread.h"
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* This file should still compile even when THREADS is not defined.
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* This is to make things easier to deal with on the makefile scene..
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#define INIT_TSD_ERROR "_glthread_: failed to allocate key for thread specific data"
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#define GET_TSD_ERROR "_glthread_: failed to get thread specific data"
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#define SET_TSD_ERROR "_glthread_: thread failed to set thread specific data"
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* Magic number to determine if a TSD object has been initialized.
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* Kind of a hack but there doesn't appear to be a better cross-platform
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#define INIT_MAGIC 0xff8adc98
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* POSIX Threads -- The best way to go if your platform supports them.
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* Solaris >= 2.5 have POSIX threads, IRIX >= 6.4 reportedly
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* has them, and many of the free Unixes now have them.
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* Be sure to use appropriate -mt or -D_REENTRANT type
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* compile flags when building.
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return (unsigned long) pthread_self();
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_glthread_InitTSD(_glthread_TSD *tsd)
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if (pthread_key_create(&tsd->key, NULL/*free*/) != 0) {
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perror(INIT_TSD_ERROR);
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tsd->initMagic = INIT_MAGIC;
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_glthread_GetTSD(_glthread_TSD *tsd)
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if (tsd->initMagic != (int) INIT_MAGIC) {
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_glthread_InitTSD(tsd);
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return pthread_getspecific(tsd->key);
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_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
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if (tsd->initMagic != (int) INIT_MAGIC) {
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_glthread_InitTSD(tsd);
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if (pthread_setspecific(tsd->key, ptr) != 0) {
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perror(SET_TSD_ERROR);
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#endif /* PTHREADS */
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* Win32 Threads. The only available option for Windows 95/NT.
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* Be sure that you compile using the Multithreaded runtime, otherwise
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* bad things will happen.
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static void InsteadOf_exit(int nCode)
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DWORD dwErr = GetLastError();
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_glthread_GetID(void)
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return GetCurrentThreadId();
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_glthread_InitTSD(_glthread_TSD *tsd)
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tsd->key = TlsAlloc();
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if (tsd->key == TLS_OUT_OF_INDEXES) {
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perror(INIT_TSD_ERROR);
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tsd->initMagic = INIT_MAGIC;
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_glthread_DestroyTSD(_glthread_TSD *tsd)
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if (tsd->initMagic != INIT_MAGIC) {
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tsd->initMagic = 0x0;
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_glthread_GetTSD(_glthread_TSD *tsd)
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if (tsd->initMagic != INIT_MAGIC) {
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_glthread_InitTSD(tsd);
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return TlsGetValue(tsd->key);
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_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
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/* the following code assumes that the _glthread_TSD has been initialized
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to zero at creation */
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if (tsd->initMagic != INIT_MAGIC) {
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_glthread_InitTSD(tsd);
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if (TlsSetValue(tsd->key, ptr) == 0) {
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perror(SET_TSD_ERROR);
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#endif /* WIN32_THREADS */
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_glthread_GetID(void)
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return (unsigned long) find_thread(NULL);
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_glthread_InitTSD(_glthread_TSD *tsd)
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tsd->key = tls_allocate();
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tsd->initMagic = INIT_MAGIC;
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_glthread_GetTSD(_glthread_TSD *tsd)
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if (tsd->initMagic != (int) INIT_MAGIC) {
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_glthread_InitTSD(tsd);
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return tls_get(tsd->key);
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_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
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if (tsd->initMagic != (int) INIT_MAGIC) {
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_glthread_InitTSD(tsd);
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tls_set(tsd->key, ptr);
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#endif /* BEOS_THREADS */
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_glthread_GetID(void)
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_glthread_InitTSD(_glthread_TSD *tsd)
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_glthread_GetTSD(_glthread_TSD *tsd)
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_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)