380 lines
7.3 KiB
C
380 lines
7.3 KiB
C
/*
|
|
* Mesa 3-D graphics library
|
|
* Version: 6.5.1
|
|
*
|
|
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* 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
|
|
* BRIAN PAUL 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.
|
|
*/
|
|
|
|
|
|
/*
|
|
* XXX There's probably some work to do in order to make this file
|
|
* truly reusable outside of Mesa.
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_DIX_CONFIG_H
|
|
#include <dix-config.h>
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include "glthread.h"
|
|
|
|
|
|
/*
|
|
* This file should still compile even when THREADS is not defined.
|
|
* This is to make things easier to deal with on the makefile scene..
|
|
*/
|
|
#ifdef THREADS
|
|
#include <errno.h>
|
|
|
|
/*
|
|
* Error messages
|
|
*/
|
|
#define INIT_TSD_ERROR "_glthread_: failed to allocate key for thread specific data"
|
|
#define GET_TSD_ERROR "_glthread_: failed to get thread specific data"
|
|
#define SET_TSD_ERROR "_glthread_: thread failed to set thread specific data"
|
|
|
|
|
|
/*
|
|
* Magic number to determine if a TSD object has been initialized.
|
|
* Kind of a hack but there doesn't appear to be a better cross-platform
|
|
* solution.
|
|
*/
|
|
#define INIT_MAGIC 0xff8adc98
|
|
|
|
|
|
|
|
/*
|
|
* POSIX Threads -- The best way to go if your platform supports them.
|
|
* Solaris >= 2.5 have POSIX threads, IRIX >= 6.4 reportedly
|
|
* has them, and many of the free Unixes now have them.
|
|
* Be sure to use appropriate -mt or -D_REENTRANT type
|
|
* compile flags when building.
|
|
*/
|
|
#ifdef PTHREADS
|
|
|
|
unsigned long
|
|
_glthread_GetID(void)
|
|
{
|
|
return (unsigned long) pthread_self();
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_InitTSD(_glthread_TSD *tsd)
|
|
{
|
|
if (pthread_key_create(&tsd->key, NULL/*free*/) != 0) {
|
|
perror(INIT_TSD_ERROR);
|
|
exit(-1);
|
|
}
|
|
tsd->initMagic = INIT_MAGIC;
|
|
}
|
|
|
|
|
|
void *
|
|
_glthread_GetTSD(_glthread_TSD *tsd)
|
|
{
|
|
if (tsd->initMagic != (int) INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
return pthread_getspecific(tsd->key);
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
|
|
{
|
|
if (tsd->initMagic != (int) INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
if (pthread_setspecific(tsd->key, ptr) != 0) {
|
|
perror(SET_TSD_ERROR);
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
#endif /* PTHREADS */
|
|
|
|
|
|
|
|
/*
|
|
* Solaris/Unix International Threads -- Use only if POSIX threads
|
|
* aren't available on your Unix platform. Solaris 2.[34] are examples
|
|
* of platforms where this is the case. Be sure to use -mt and/or
|
|
* -D_REENTRANT when compiling.
|
|
*/
|
|
#ifdef SOLARIS_THREADS
|
|
#define USE_LOCK_FOR_KEY /* undef this to try a version without
|
|
lock for the global key... */
|
|
|
|
unsigned long
|
|
_glthread_GetID(void)
|
|
{
|
|
abort(); /* XXX not implemented yet */
|
|
return (unsigned long) 0;
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_InitTSD(_glthread_TSD *tsd)
|
|
{
|
|
if ((errno = mutex_init(&tsd->keylock, 0, NULL)) != 0 ||
|
|
(errno = thr_keycreate(&(tsd->key), free)) != 0) {
|
|
perror(INIT_TSD_ERROR);
|
|
exit(-1);
|
|
}
|
|
tsd->initMagic = INIT_MAGIC;
|
|
}
|
|
|
|
|
|
void *
|
|
_glthread_GetTSD(_glthread_TSD *tsd)
|
|
{
|
|
void* ret;
|
|
if (tsd->initMagic != INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
#ifdef USE_LOCK_FOR_KEY
|
|
mutex_lock(&tsd->keylock);
|
|
thr_getspecific(tsd->key, &ret);
|
|
mutex_unlock(&tsd->keylock);
|
|
#else
|
|
if ((errno = thr_getspecific(tsd->key, &ret)) != 0) {
|
|
perror(GET_TSD_ERROR);
|
|
exit(-1);
|
|
}
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
|
|
{
|
|
if (tsd->initMagic != INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
if ((errno = thr_setspecific(tsd->key, ptr)) != 0) {
|
|
perror(SET_TSD_ERROR);
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
#undef USE_LOCK_FOR_KEY
|
|
#endif /* SOLARIS_THREADS */
|
|
|
|
|
|
|
|
/*
|
|
* Win32 Threads. The only available option for Windows 95/NT.
|
|
* Be sure that you compile using the Multithreaded runtime, otherwise
|
|
* bad things will happen.
|
|
*/
|
|
#ifdef WIN32_THREADS
|
|
|
|
void FreeTSD(_glthread_TSD *p)
|
|
{
|
|
if (p->initMagic==INIT_MAGIC) {
|
|
TlsFree(p->key);
|
|
p->initMagic=0;
|
|
}
|
|
}
|
|
|
|
void InsteadOf_exit(int nCode)
|
|
{
|
|
DWORD dwErr=GetLastError();
|
|
}
|
|
|
|
unsigned long
|
|
_glthread_GetID(void)
|
|
{
|
|
return GetCurrentThreadId();
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_InitTSD(_glthread_TSD *tsd)
|
|
{
|
|
tsd->key = TlsAlloc();
|
|
if (tsd->key == TLS_OUT_OF_INDEXES) {
|
|
perror("Mesa:_glthread_InitTSD");
|
|
InsteadOf_exit(-1);
|
|
}
|
|
tsd->initMagic = INIT_MAGIC;
|
|
}
|
|
|
|
|
|
void *
|
|
_glthread_GetTSD(_glthread_TSD *tsd)
|
|
{
|
|
if (tsd->initMagic != INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
return TlsGetValue(tsd->key);
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
|
|
{
|
|
/* the following code assumes that the _glthread_TSD has been initialized
|
|
to zero at creation */
|
|
if (tsd->initMagic != INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
if (TlsSetValue(tsd->key, ptr) == 0) {
|
|
perror("Mesa:_glthread_SetTSD");
|
|
InsteadOf_exit(-1);
|
|
}
|
|
}
|
|
|
|
#endif /* WIN32_THREADS */
|
|
|
|
|
|
|
|
/*
|
|
* XFree86 has its own thread wrapper, Xthreads.h
|
|
* We wrap it again for GL.
|
|
*/
|
|
#ifdef USE_XTHREADS
|
|
|
|
unsigned long
|
|
_glthread_GetID(void)
|
|
{
|
|
return (unsigned long) xthread_self();
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_InitTSD(_glthread_TSD *tsd)
|
|
{
|
|
if (xthread_key_create(&tsd->key, NULL) != 0) {
|
|
perror(INIT_TSD_ERROR);
|
|
exit(-1);
|
|
}
|
|
tsd->initMagic = INIT_MAGIC;
|
|
}
|
|
|
|
|
|
void *
|
|
_glthread_GetTSD(_glthread_TSD *tsd)
|
|
{
|
|
void *ptr;
|
|
if (tsd->initMagic != INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
xthread_get_specific(tsd->key, &ptr);
|
|
return ptr;
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
|
|
{
|
|
if (tsd->initMagic != INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
xthread_set_specific(tsd->key, ptr);
|
|
}
|
|
|
|
#endif /* XTHREAD */
|
|
|
|
|
|
|
|
/*
|
|
* BeOS threads
|
|
*/
|
|
#ifdef BEOS_THREADS
|
|
|
|
unsigned long
|
|
_glthread_GetID(void)
|
|
{
|
|
return (unsigned long) find_thread(NULL);
|
|
}
|
|
|
|
void
|
|
_glthread_InitTSD(_glthread_TSD *tsd)
|
|
{
|
|
tsd->key = tls_allocate();
|
|
tsd->initMagic = INIT_MAGIC;
|
|
}
|
|
|
|
void *
|
|
_glthread_GetTSD(_glthread_TSD *tsd)
|
|
{
|
|
if (tsd->initMagic != (int) INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
return tls_get(tsd->key);
|
|
}
|
|
|
|
void
|
|
_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
|
|
{
|
|
if (tsd->initMagic != (int) INIT_MAGIC) {
|
|
_glthread_InitTSD(tsd);
|
|
}
|
|
tls_set(tsd->key, ptr);
|
|
}
|
|
|
|
#endif /* BEOS_THREADS */
|
|
|
|
|
|
|
|
#else /* THREADS */
|
|
|
|
|
|
/*
|
|
* no-op functions
|
|
*/
|
|
|
|
unsigned long
|
|
_glthread_GetID(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_InitTSD(_glthread_TSD *tsd)
|
|
{
|
|
(void) tsd;
|
|
}
|
|
|
|
|
|
void *
|
|
_glthread_GetTSD(_glthread_TSD *tsd)
|
|
{
|
|
(void) tsd;
|
|
return NULL;
|
|
}
|
|
|
|
|
|
void
|
|
_glthread_SetTSD(_glthread_TSD *tsd, void *ptr)
|
|
{
|
|
(void) tsd;
|
|
(void) ptr;
|
|
}
|
|
|
|
|
|
#endif /* THREADS */
|