From 3c67b8c5f69522045d6f869b22fb14f7d7458a57 Mon Sep 17 00:00:00 2001 From: marha Date: Mon, 22 Nov 2010 19:03:06 +0000 Subject: Preperation of new merge with directory moves --- mesalib/src/mapi/glapi/glthread.h | 255 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 255 insertions(+) create mode 100644 mesalib/src/mapi/glapi/glthread.h (limited to 'mesalib/src/mapi/glapi/glthread.h') diff --git a/mesalib/src/mapi/glapi/glthread.h b/mesalib/src/mapi/glapi/glthread.h new file mode 100644 index 000000000..4fe99284a --- /dev/null +++ b/mesalib/src/mapi/glapi/glthread.h @@ -0,0 +1,255 @@ +/* + * 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(PTHREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS) +#ifndef THREADS +#define THREADS +#endif +#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 /* 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)) + +#endif /* PTHREADS */ + + +/* + * Windows threads. Should work with Windows NT and 95. + * IMPORTANT: Link with multithreaded runtime library when THREADS are + * used! + */ +#ifdef WIN32_THREADS +#include + +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 */ + + +/* + * BeOS threads. R5.x required. + */ +#ifdef BEOS_THREADS + +/* Problem with OS.h and this file on haiku */ +#ifndef __HAIKU__ +#include +#endif + +#include + +/* 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 + +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 */ + + +/* + * THREADS not defined + */ +#ifndef THREADS + +typedef unsigned _glthread_TSD; + +typedef unsigned _glthread_Thread; + +typedef unsigned _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_DestroyTSD(_glthread_TSD *); /* WIN32 only */ + + +extern void * +_glthread_GetTSD(_glthread_TSD *); + + +extern void +_glthread_SetTSD(_glthread_TSD *, void *); + + +#endif /* THREADS_H */ -- cgit v1.2.3