| 0,0 → 1,198 |
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| /* |
| * 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 |
| * Modified for use in mapi by Chia-I Wu |
| */ |
| |
| /* |
| * 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 _U_THREAD_H_ |
| #define _U_THREAD_H_ |
| |
| #include "u_compiler.h" |
| |
| |
| /* |
| * 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 */ |
| |
| struct u_tsd { |
| pthread_key_t key; |
| int initMagic; |
| }; |
| |
| typedef pthread_mutex_t u_mutex; |
| |
| #define u_mutex_declare_static(name) \ |
| static u_mutex name = PTHREAD_MUTEX_INITIALIZER |
| |
| #define u_mutex_init(name) pthread_mutex_init(&(name), NULL) |
| #define u_mutex_destroy(name) pthread_mutex_destroy(&(name)) |
| #define u_mutex_lock(name) (void) pthread_mutex_lock(&(name)) |
| #define u_mutex_unlock(name) (void) pthread_mutex_unlock(&(name)) |
| |
| #endif /* PTHREADS */ |
| |
| |
| /* |
| * Windows threads. Should work with Windows NT and 95. |
| * IMPORTANT: Link with multithreaded runtime library when THREADS are |
| * used! |
| */ |
| #undef WIN32 |
| |
| #ifdef WIN32 |
| #include <windows.h> |
| |
| struct u_tsd { |
| DWORD key; |
| int initMagic; |
| }; |
| |
| typedef CRITICAL_SECTION u_mutex; |
| |
| /* http://locklessinc.com/articles/pthreads_on_windows/ */ |
| #define u_mutex_declare_static(name) \ |
| /* static */ u_mutex name = {(void*)-1, -1, 0, 0, 0, 0} |
| |
| #define u_mutex_init(name) InitializeCriticalSection(&name) |
| #define u_mutex_destroy(name) DeleteCriticalSection(&name) |
| #define u_mutex_lock(name) EnterCriticalSection(&name) |
| #define u_mutex_unlock(name) LeaveCriticalSection(&name) |
| |
| #endif /* WIN32 */ |
| |
| |
| /* |
| * BeOS threads. R5.x required. |
| */ |
| #ifdef BEOS_THREADS |
| |
| /* Problem with OS.h and this file on haiku */ |
| #ifndef __HAIKU__ |
| #include <kernel/OS.h> |
| #endif |
| |
| #include <support/TLS.h> |
| |
| /* The only two typedefs required here |
| * this is cause of the OS.h problem |
| */ |
| #ifdef __HAIKU__ |
| typedef int32 thread_id; |
| typedef int32 sem_id; |
| #endif |
| |
| struct u_tsd { |
| int32 key; |
| int initMagic; |
| }; |
| |
| /* Use Benaphore, aka speeder semaphore */ |
| typedef struct { |
| int32 lock; |
| sem_id sem; |
| } benaphore; |
| typedef benaphore u_mutex; |
| |
| #define u_mutex_declare_static(name) \ |
| static u_mutex name = { 0, 0 } |
| |
| #define u_mutex_init(name) \ |
| name.sem = create_sem(0, #name"_benaphore"), \ |
| name.lock = 0 |
| |
| #define u_mutex_destroy(name) \ |
| delete_sem(name.sem), \ |
| name.lock = 0 |
| |
| #define u_mutex_lock(name) \ |
| if (name.sem == 0) \ |
| u_mutex_init(name); \ |
| if (atomic_add(&(name.lock), 1) >= 1) \ |
| acquire_sem(name.sem) |
| |
| #define u_mutex_unlock(name) \ |
| if (atomic_add(&(name.lock), -1) > 1) \ |
| release_sem(name.sem) |
| |
| #endif /* BEOS_THREADS */ |
| |
| |
| /* |
| * THREADS not defined |
| */ |
| #ifndef THREADS |
| |
| struct u_tsd { |
| int initMagic; |
| }; |
| |
| typedef unsigned u_mutex; |
| |
| #define u_mutex_declare_static(name) static u_mutex name = 0 |
| #define u_mutex_init(name) (void) name |
| #define u_mutex_destroy(name) (void) name |
| #define u_mutex_lock(name) (void) name |
| #define u_mutex_unlock(name) (void) name |
| |
| #endif /* THREADS */ |
| |
| |
| unsigned long |
| u_thread_self(void); |
| |
| void |
| u_tsd_init(struct u_tsd *tsd); |
| |
| void |
| u_tsd_destroy(struct u_tsd *tsd); /* WIN32 only */ |
| |
| void * |
| u_tsd_get(struct u_tsd *tsd); |
| |
| void |
| u_tsd_set(struct u_tsd *tsd, void *ptr); |
| |
| #endif /* _U_THREAD_H_ */ |