-/* $Id: glthread.h,v 1.2 2000/01/31 23:10:47 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.3
- *
- * Copyright (C) 1999 Brian Paul All Rights Reserved.
- *
+ * 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
* 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
+ *
*/
-#ifndef GLTHREAD_H
-#define GLTHREAD_H
-
-
/*
- * If this file is accidentally included by a non-threaded build,
+ * 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.
*/
-#ifdef THREADS
-/*
- * It is an error not to select a specific threads API when compiling.
- */
-#if !defined(PTHREADS) && !defined(SOLARIS_THREADS) && !defined(WIN32)
-#error One of PTHREADS, SOLARIS_THREADS or WIN32 must be defined.
+
+#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(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
* compiler flag. On Solaris with gcc, use -D_REENTRANT to enable
* proper compiling for MT-safe libc etc.
*/
-#ifdef PTHREADS
+#if defined(PTHREADS)
#include <pthread.h> /* POSIX threads headers */
typedef struct {
pthread_key_t key;
- pthread_once_t once;
+ int initMagic;
} _glthread_TSD;
typedef pthread_t _glthread_Thread;
#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 */
+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) \
+ ASSERT(0);
+
+#define _glthread_DESTROY_COND(name) \
+ ASSERT(0);
+
+#define _glthread_COND_WAIT(cond, mutex) \
+ ASSERT(0);
+
+#define _glthread_COND_SIGNAL(cond) \
+ ASSERT(0);
+
+#define _glthread_COND_BROADCAST(cond) \
+ ASSERT(0);
+
+#endif
/*
- * Solaris threads. Use only up to Solaris 2.4.
+ * 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
+ * Be sure to compile with -mt on the Solaris compilers, or
* use -D_REENTRANT if using gcc.
*/
#ifdef SOLARIS_THREADS
typedef struct {
thread_key_t key;
mutex_t keylock;
- int initfuncCalled;
+ int initMagic;
} _glthread_TSD;
typedef thread_t _glthread_Thread;
/* 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
/*
- * Windows threads. Should work with Windows NT and 95.
+ * Windows threads. Should work with Windows NT and 95.
* IMPORTANT: Link with multithreaded runtime library when THREADS are
* used!
*/
-
-#ifdef WIN32
+#ifdef WIN32_THREADS
#include <windows.h>
typedef struct {
DWORD key;
- int initfuncCalled;
+ int initMagic;
} _glthread_TSD;
typedef HANDLE _glthread_Thread;
typedef CRITICAL_SECTION _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_LOCK_MUTEX(name) (void) name
-#define _glthread_UNLOCK_MUTEX(name) (void) name
-
-#endif /* WIN32 */
-
-
+#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 */
/*
- * Platform independent thread specific data API.
+ * BeOS threads. R5.x required.
*/
+#ifdef BEOS_THREADS
-extern unsigned long
-_glthread_GetID(void);
+/* Problem with OS.h and this file on haiku */
+#ifndef __HAIKU__
+#include <kernel/OS.h>
+#endif
+#include <support/TLS.h>
-extern void
-_glthread_InitTSD(_glthread_TSD *);
+/* 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;
-extern void *
-_glthread_GetTSD(_glthread_TSD *);
+typedef thread_id _glthread_Thread;
+/* Use Benaphore, aka speeder semaphore */
+typedef struct {
+ int32 lock;
+ sem_id sem;
+} benaphore;
+typedef benaphore _glthread_Mutex;
-extern void
-_glthread_SetTSD(_glthread_TSD *, void *, void (*initfunc)(void));
+#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 */
-#else /* THREADS */
+#ifndef THREADS
/*
* THREADS not defined
*/
-typedef GLuint _glthread_TSD;
+typedef unsigned _glthread_TSD;
-typedef GLuint _glthread_Thread;
+typedef unsigned _glthread_Thread;
-typedef GLuint _glthread_Mutex;
+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 */
-#endif /* THREADS_H */
+
+/*
+ * 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 __GNUC__ || __GNUC__ < 3
+# define __builtin_expect(x, y) x
+#endif
+
+#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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