+++ /dev/null
-/*
- * Mesa 3-D graphics library
- * Version: 6.5.2
- *
- * 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.
- */
-
-
-/*
- * Thread support for gl dispatch.
- *
- * Initial version by John Stone (j.stone@acm.org) (johns@cs.umr.edu)
- * and Christoph Poliwoda (poliwoda@volumegraphics.com)
- * Revised by Keith Whitwell
- * Adapted for new gl dispatcher by Brian Paul
- *
- *
- *
- * DOCUMENTATION
- *
- * This thread module exports the following types:
- * _glthread_TSD Thread-specific data area
- * _glthread_Thread Thread datatype
- * _glthread_Mutex Mutual exclusion lock
- *
- * Macros:
- * _glthread_DECLARE_STATIC_MUTEX(name) Declare a non-local mutex
- * _glthread_INIT_MUTEX(name) Initialize a mutex
- * _glthread_LOCK_MUTEX(name) Lock a mutex
- * _glthread_UNLOCK_MUTEX(name) Unlock a mutex
- *
- * Functions:
- * _glthread_GetID(v) Get integer thread ID
- * _glthread_InitTSD() Initialize thread-specific data
- * _glthread_GetTSD() Get thread-specific data
- * _glthread_SetTSD() Set thread-specific data
- *
- */
-
-/*
- * If this file is accidentally included by a non-threaded build,
- * it should not cause the build to fail, or otherwise cause problems.
- * In general, it should only be included when needed however.
- */
-
-#ifndef GLTHREAD_H
-#define GLTHREAD_H
-
-
-#if defined(USE_MGL_NAMESPACE)
-#define _glapi_Dispatch _mglapi_Dispatch
-#endif
-
-
-
-#if (defined(PTHREADS) || defined(SOLARIS_THREADS) ||\
- defined(WIN32_THREADS) || defined(USE_XTHREADS) || defined(BEOS_THREADS)) \
- && !defined(THREADS)
-# define THREADS
-#endif
-
-#ifdef VMS
-#include <GL/vms_x_fix.h>
-#endif
-
-/*
- * POSIX threads. This should be your choice in the Unix world
- * whenever possible. When building with POSIX threads, be sure
- * to enable any compiler flags which will cause the MT-safe
- * libc (if one exists) to be used when linking, as well as any
- * header macros for MT-safe errno, etc. For Solaris, this is the -mt
- * compiler flag. On Solaris with gcc, use -D_REENTRANT to enable
- * proper compiling for MT-safe libc etc.
- */
-#if defined(PTHREADS)
-#include <pthread.h> /* POSIX threads headers */
-
-typedef struct {
- pthread_key_t key;
- int initMagic;
-} _glthread_TSD;
-
-typedef pthread_t _glthread_Thread;
-
-typedef pthread_mutex_t _glthread_Mutex;
-
-#define _glthread_DECLARE_STATIC_MUTEX(name) \
- static _glthread_Mutex name = PTHREAD_MUTEX_INITIALIZER
-
-#define _glthread_INIT_MUTEX(name) \
- pthread_mutex_init(&(name), NULL)
-
-#define _glthread_DESTROY_MUTEX(name) \
- pthread_mutex_destroy(&(name))
-
-#define _glthread_LOCK_MUTEX(name) \
- (void) pthread_mutex_lock(&(name))
-
-#define _glthread_UNLOCK_MUTEX(name) \
- (void) pthread_mutex_unlock(&(name))
-
-typedef pthread_cond_t _glthread_Cond;
-
-#define _glthread_DECLARE_STATIC_COND(name) \
- static _glthread_Cond name = PTHREAD_COND_INITIALIZER
-
-#define _glthread_INIT_COND(cond) \
- pthread_cond_init(&(cond), NULL)
-
-#define _glthread_DESTROY_COND(name) \
- pthread_cond_destroy(&(name))
-
-#define _glthread_COND_WAIT(cond, mutex) \
- pthread_cond_wait(&(cond), &(mutex))
-
-#define _glthread_COND_SIGNAL(cond) \
- pthread_cond_signal(&(cond))
-
-#define _glthread_COND_BROADCAST(cond) \
- pthread_cond_broadcast(&(cond))
-
-
-#else /* PTHREADS */
-
-typedef unsigned int _glthread_Cond;
-#define _glthread_DECLARE_STATIC_COND(name) \
-// #warning Condition variables not implemented.
-
-#define _glthread_INIT_COND(cond) \
- abort();
-
-#define _glthread_DESTROY_COND(name) \
- abort();
-
-#define _glthread_COND_WAIT(cond, mutex) \
- abort();
-
-#define _glthread_COND_SIGNAL(cond) \
- abort();
-
-#define _glthread_COND_BROADCAST(cond) \
- abort();
-
-#endif
-
-
-/*
- * Solaris threads. Use only up to Solaris 2.4.
- * Solaris 2.5 and higher provide POSIX threads.
- * Be sure to compile with -mt on the Solaris compilers, or
- * use -D_REENTRANT if using gcc.
- */
-#ifdef SOLARIS_THREADS
-#include <thread.h>
-
-typedef struct {
- thread_key_t key;
- mutex_t keylock;
- int initMagic;
-} _glthread_TSD;
-
-typedef thread_t _glthread_Thread;
-
-typedef mutex_t _glthread_Mutex;
-
-/* XXX need to really implement mutex-related macros */
-#define _glthread_DECLARE_STATIC_MUTEX(name) static _glthread_Mutex name = 0
-#define _glthread_INIT_MUTEX(name) (void) name
-#define _glthread_DESTROY_MUTEX(name) (void) name
-#define _glthread_LOCK_MUTEX(name) (void) name
-#define _glthread_UNLOCK_MUTEX(name) (void) name
-
-#endif /* SOLARIS_THREADS */
-
-
-
-
-/*
- * Windows threads. Should work with Windows NT and 95.
- * IMPORTANT: Link with multithreaded runtime library when THREADS are
- * used!
- */
-#ifdef WIN32_THREADS
-#include <windows.h>
-
-typedef struct {
- DWORD key;
- int initMagic;
-} _glthread_TSD;
-
-typedef HANDLE _glthread_Thread;
-
-typedef CRITICAL_SECTION _glthread_Mutex;
-
-#define _glthread_DECLARE_STATIC_MUTEX(name) /*static*/ _glthread_Mutex name = {0,0,0,0,0,0}
-#define _glthread_INIT_MUTEX(name) InitializeCriticalSection(&name)
-#define _glthread_DESTROY_MUTEX(name) DeleteCriticalSection(&name)
-#define _glthread_LOCK_MUTEX(name) EnterCriticalSection(&name)
-#define _glthread_UNLOCK_MUTEX(name) LeaveCriticalSection(&name)
-
-#endif /* WIN32_THREADS */
-
-
-
-
-/*
- * XFree86 has its own thread wrapper, Xthreads.h
- * We wrap it again for GL.
- */
-#ifdef USE_XTHREADS
-#include <X11/Xthreads.h>
-
-typedef struct {
- xthread_key_t key;
- int initMagic;
-} _glthread_TSD;
-
-typedef xthread_t _glthread_Thread;
-
-typedef xmutex_rec _glthread_Mutex;
-
-#ifdef XMUTEX_INITIALIZER
-#define _glthread_DECLARE_STATIC_MUTEX(name) \
- static _glthread_Mutex name = XMUTEX_INITIALIZER
-#else
-#define _glthread_DECLARE_STATIC_MUTEX(name) \
- static _glthread_Mutex name
-#endif
-
-#define _glthread_INIT_MUTEX(name) \
- xmutex_init(&(name))
-
-#define _glthread_DESTROY_MUTEX(name) \
- xmutex_clear(&(name))
-
-#define _glthread_LOCK_MUTEX(name) \
- (void) xmutex_lock(&(name))
-
-#define _glthread_UNLOCK_MUTEX(name) \
- (void) xmutex_unlock(&(name))
-
-#endif /* USE_XTHREADS */
-
-
-
-/*
- * BeOS threads. R5.x required.
- */
-#ifdef BEOS_THREADS
-
-#include <kernel/OS.h>
-#include <support/TLS.h>
-
-typedef struct {
- int32 key;
- int initMagic;
-} _glthread_TSD;
-
-typedef thread_id _glthread_Thread;
-
-/* Use Benaphore, aka speeder semaphore */
-typedef struct {
- int32 lock;
- sem_id sem;
-} benaphore;
-typedef benaphore _glthread_Mutex;
-
-#define _glthread_DECLARE_STATIC_MUTEX(name) static _glthread_Mutex name = { 0, 0 }
-#define _glthread_INIT_MUTEX(name) name.sem = create_sem(0, #name"_benaphore"), name.lock = 0
-#define _glthread_DESTROY_MUTEX(name) delete_sem(name.sem), name.lock = 0
-#define _glthread_LOCK_MUTEX(name) if (name.sem == 0) _glthread_INIT_MUTEX(name); \
- if (atomic_add(&(name.lock), 1) >= 1) acquire_sem(name.sem)
-#define _glthread_UNLOCK_MUTEX(name) if (atomic_add(&(name.lock), -1) > 1) release_sem(name.sem)
-
-#endif /* BEOS_THREADS */
-
-
-
-#ifndef THREADS
-
-/*
- * THREADS not defined
- */
-
-typedef GLuint _glthread_TSD;
-
-typedef GLuint _glthread_Thread;
-
-typedef GLuint _glthread_Mutex;
-
-#define _glthread_DECLARE_STATIC_MUTEX(name) static _glthread_Mutex name = 0
-
-#define _glthread_INIT_MUTEX(name) (void) name
-
-#define _glthread_DESTROY_MUTEX(name) (void) name
-
-#define _glthread_LOCK_MUTEX(name) (void) name
-
-#define _glthread_UNLOCK_MUTEX(name) (void) name
-
-#endif /* THREADS */
-
-
-
-/*
- * Platform independent thread specific data API.
- */
-
-extern unsigned long
-_glthread_GetID(void);
-
-
-extern void
-_glthread_InitTSD(_glthread_TSD *);
-
-
-extern void *
-_glthread_GetTSD(_glthread_TSD *);
-
-
-extern void
-_glthread_SetTSD(_glthread_TSD *, void *);
-
-#if defined(GLX_USE_TLS)
-
-extern __thread struct _glapi_table * _glapi_tls_Dispatch
- __attribute__((tls_model("initial-exec")));
-
-#define GET_DISPATCH() _glapi_tls_Dispatch
-
-#elif !defined(GL_CALL)
-# if defined(THREADS)
-# define GET_DISPATCH() \
- ((__builtin_expect( _glapi_Dispatch != NULL, 1 )) \
- ? _glapi_Dispatch : _glapi_get_dispatch())
-# else
-# define GET_DISPATCH() _glapi_Dispatch
-# endif /* defined(THREADS) */
-#endif /* ndef GL_CALL */
-
-
-#endif /* THREADS_H */
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