e5aad4bc08
This copies over the files generated from mesa/src/mesa/glapi. There's a corresponding mesa commit that makes it easy to generate the glapi files straight into the xserver tree when the XML definitions change. The only few files that are copied from mesa but aren't generated are glapi.[ch] and glthread.[ch]. Everything in there is technically DRI driver API and the whole setup is still a bit fragile, but it's not a new problem. The --with-mesa-source configure option is still around since other parts of the server (XGL and DMX - grep for MESA_SOURCE) need that, but for common case of building with GLX and AIGLX support, that option is no longer needed.
320 lines
8.0 KiB
C
320 lines
8.0 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 6.5.2
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*
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* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
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*
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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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*
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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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*
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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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*/
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/*
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* Thread support for gl dispatch.
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*
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* Initial version by John Stone (j.stone@acm.org) (johns@cs.umr.edu)
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* and Christoph Poliwoda (poliwoda@volumegraphics.com)
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* Revised by Keith Whitwell
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* Adapted for new gl dispatcher by Brian Paul
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*
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*
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*
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* DOCUMENTATION
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*
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* This thread module exports the following types:
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* _glthread_TSD Thread-specific data area
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* _glthread_Thread Thread datatype
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* _glthread_Mutex Mutual exclusion lock
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*
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* Macros:
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* _glthread_DECLARE_STATIC_MUTEX(name) Declare a non-local mutex
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* _glthread_INIT_MUTEX(name) Initialize a mutex
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* _glthread_LOCK_MUTEX(name) Lock a mutex
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* _glthread_UNLOCK_MUTEX(name) Unlock a mutex
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*
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* Functions:
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* _glthread_GetID(v) Get integer thread ID
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* _glthread_InitTSD() Initialize thread-specific data
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* _glthread_GetTSD() Get thread-specific data
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* _glthread_SetTSD() Set thread-specific data
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*
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*/
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/*
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* If this file is accidentally included by a non-threaded build,
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* it should not cause the build to fail, or otherwise cause problems.
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* In general, it should only be included when needed however.
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*/
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#ifndef GLTHREAD_H
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#define GLTHREAD_H
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#if defined(USE_MGL_NAMESPACE)
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#define _glapi_Dispatch _mglapi_Dispatch
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#endif
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#if (defined(PTHREADS) || defined(SOLARIS_THREADS) ||\
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defined(WIN32_THREADS) || defined(USE_XTHREADS) || defined(BEOS_THREADS)) \
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&& !defined(THREADS)
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# define THREADS
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#endif
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#ifdef VMS
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#include <GL/vms_x_fix.h>
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#endif
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/*
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* POSIX threads. This should be your choice in the Unix world
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* whenever possible. When building with POSIX threads, be sure
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* to enable any compiler flags which will cause the MT-safe
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* libc (if one exists) to be used when linking, as well as any
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* header macros for MT-safe errno, etc. For Solaris, this is the -mt
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* compiler flag. On Solaris with gcc, use -D_REENTRANT to enable
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* proper compiling for MT-safe libc etc.
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*/
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#if defined(PTHREADS)
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#include <pthread.h> /* POSIX threads headers */
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typedef struct {
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pthread_key_t key;
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int initMagic;
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} _glthread_TSD;
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typedef pthread_t _glthread_Thread;
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typedef pthread_mutex_t _glthread_Mutex;
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#define _glthread_DECLARE_STATIC_MUTEX(name) \
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static _glthread_Mutex name = PTHREAD_MUTEX_INITIALIZER
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#define _glthread_INIT_MUTEX(name) \
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pthread_mutex_init(&(name), NULL)
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#define _glthread_DESTROY_MUTEX(name) \
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pthread_mutex_destroy(&(name))
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#define _glthread_LOCK_MUTEX(name) \
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(void) pthread_mutex_lock(&(name))
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#define _glthread_UNLOCK_MUTEX(name) \
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(void) pthread_mutex_unlock(&(name))
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#endif /* PTHREADS */
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/*
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* Solaris threads. Use only up to Solaris 2.4.
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* Solaris 2.5 and higher provide POSIX threads.
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* Be sure to compile with -mt on the Solaris compilers, or
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* use -D_REENTRANT if using gcc.
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*/
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#ifdef SOLARIS_THREADS
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#include <thread.h>
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typedef struct {
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thread_key_t key;
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mutex_t keylock;
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int initMagic;
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} _glthread_TSD;
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typedef thread_t _glthread_Thread;
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typedef mutex_t _glthread_Mutex;
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/* XXX need to really implement mutex-related macros */
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#define _glthread_DECLARE_STATIC_MUTEX(name) static _glthread_Mutex name = 0
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#define _glthread_INIT_MUTEX(name) (void) name
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#define _glthread_DESTROY_MUTEX(name) (void) name
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#define _glthread_LOCK_MUTEX(name) (void) name
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#define _glthread_UNLOCK_MUTEX(name) (void) name
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#endif /* SOLARIS_THREADS */
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/*
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* Windows threads. Should work with Windows NT and 95.
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* IMPORTANT: Link with multithreaded runtime library when THREADS are
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* used!
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*/
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#ifdef WIN32_THREADS
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#include <windows.h>
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typedef struct {
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DWORD key;
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int initMagic;
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} _glthread_TSD;
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typedef HANDLE _glthread_Thread;
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typedef CRITICAL_SECTION _glthread_Mutex;
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#define _glthread_DECLARE_STATIC_MUTEX(name) /*static*/ _glthread_Mutex name = {0,0,0,0,0,0}
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#define _glthread_INIT_MUTEX(name) InitializeCriticalSection(&name)
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#define _glthread_DESTROY_MUTEX(name) DeleteCriticalSection(&name)
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#define _glthread_LOCK_MUTEX(name) EnterCriticalSection(&name)
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#define _glthread_UNLOCK_MUTEX(name) LeaveCriticalSection(&name)
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#endif /* WIN32_THREADS */
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/*
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* XFree86 has its own thread wrapper, Xthreads.h
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* We wrap it again for GL.
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*/
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#ifdef USE_XTHREADS
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#include <X11/Xthreads.h>
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typedef struct {
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xthread_key_t key;
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int initMagic;
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} _glthread_TSD;
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typedef xthread_t _glthread_Thread;
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typedef xmutex_rec _glthread_Mutex;
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#ifdef XMUTEX_INITIALIZER
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#define _glthread_DECLARE_STATIC_MUTEX(name) \
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static _glthread_Mutex name = XMUTEX_INITIALIZER
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#else
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#define _glthread_DECLARE_STATIC_MUTEX(name) \
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static _glthread_Mutex name
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#endif
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#define _glthread_INIT_MUTEX(name) \
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xmutex_init(&(name))
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#define _glthread_DESTROY_MUTEX(name) \
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xmutex_clear(&(name))
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#define _glthread_LOCK_MUTEX(name) \
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(void) xmutex_lock(&(name))
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#define _glthread_UNLOCK_MUTEX(name) \
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(void) xmutex_unlock(&(name))
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#endif /* USE_XTHREADS */
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/*
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* BeOS threads. R5.x required.
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*/
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#ifdef BEOS_THREADS
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#include <kernel/OS.h>
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#include <support/TLS.h>
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typedef struct {
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int32 key;
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int initMagic;
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} _glthread_TSD;
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typedef thread_id _glthread_Thread;
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/* Use Benaphore, aka speeder semaphore */
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typedef struct {
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int32 lock;
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sem_id sem;
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} benaphore;
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typedef benaphore _glthread_Mutex;
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#define _glthread_DECLARE_STATIC_MUTEX(name) static _glthread_Mutex name = { 0, 0 }
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#define _glthread_INIT_MUTEX(name) name.sem = create_sem(0, #name"_benaphore"), name.lock = 0
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#define _glthread_DESTROY_MUTEX(name) delete_sem(name.sem), name.lock = 0
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#define _glthread_LOCK_MUTEX(name) if (name.sem == 0) _glthread_INIT_MUTEX(name); \
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if (atomic_add(&(name.lock), 1) >= 1) acquire_sem(name.sem)
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#define _glthread_UNLOCK_MUTEX(name) if (atomic_add(&(name.lock), -1) > 1) release_sem(name.sem)
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#endif /* BEOS_THREADS */
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#ifndef THREADS
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/*
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* THREADS not defined
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*/
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typedef int _glthread_TSD;
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typedef int _glthread_Thread;
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typedef int _glthread_Mutex;
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#define _glthread_DECLARE_STATIC_MUTEX(name) static _glthread_Mutex name = 0
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#define _glthread_INIT_MUTEX(name) (void) name
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#define _glthread_DESTROY_MUTEX(name) (void) name
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#define _glthread_LOCK_MUTEX(name) (void) name
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#define _glthread_UNLOCK_MUTEX(name) (void) name
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#endif /* THREADS */
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/*
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* Platform independent thread specific data API.
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*/
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extern unsigned long
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_glthread_GetID(void);
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extern void
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_glthread_InitTSD(_glthread_TSD *);
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extern void *
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_glthread_GetTSD(_glthread_TSD *);
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extern void
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_glthread_SetTSD(_glthread_TSD *, void *);
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#if defined(GLX_USE_TLS)
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extern __thread struct _glapi_table * _glapi_tls_Dispatch
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__attribute__((tls_model("initial-exec")));
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#define GET_DISPATCH() _glapi_tls_Dispatch
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#elif !defined(GL_CALL)
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# if defined(THREADS)
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# define GET_DISPATCH() \
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((__builtin_expect( _glapi_Dispatch != NULL, 1 )) \
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? _glapi_Dispatch : _glapi_get_dispatch())
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# else
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# define GET_DISPATCH() _glapi_Dispatch
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# endif /* defined(THREADS) */
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#endif /* ndef GL_CALL */
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#endif /* THREADS_H */
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