workbench/libs/mesa/src/egl/main/eglmutex.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Chia-I Wu <olvaffe@gmail.com>
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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  25  *
  26  **************************************************************************/
  27
  28
  29 #ifndef EGLMUTEX_INCLUDED
  30 #define EGLMUTEX_INCLUDED
  31
  32 #include "eglcompiler.h"
  33
  34 #ifdef PTHREADS
  35 #include <pthread.h>
  36
  37 typedef pthread_mutex_t _EGLMutex;
  38
  39 static INLINE void _eglInitMutex(_EGLMutex *m)
  40 {
  41    pthread_mutex_init(m, NULL);
  42 }
  43
  44 static INLINE void
  45 _eglDestroyMutex(_EGLMutex *m)
  46 {
  47    pthread_mutex_destroy(m);
  48 }
  49
  50 static INLINE void
  51 _eglLockMutex(_EGLMutex *m)
  52 {
  53    pthread_mutex_lock(m);
  54 }
  55
  56 static INLINE void
  57 _eglUnlockMutex(_EGLMutex *m)
  58 {
  59    pthread_mutex_unlock(m);
  60 }
  61
  62 #define _EGL_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
  63 #define _EGL_DECLARE_MUTEX(m) \
  64    _EGLMutex m = _EGL_MUTEX_INITIALIZER
  65
  66 #elif defined(_EGL_OS_AROS)
  67
  68 #include <proto/exec.h>
  69
  70 typedef struct SignalSemaphore _EGLMutex;
  71
  72 static INLINE void _eglInitMutex(_EGLMutex *m)
  73 {
  74    InitSemaphore(m);
  75 }
  76
  77 static INLINE void
  78 _eglDestroyMutex(_EGLMutex *m)
  79 {
  80    /* No Op */
  81 }
  82
  83 static INLINE void
  84 _eglLockMutex(_EGLMutex *m)
  85 {
  86    ObtainSemaphore(m);
  87 }
  88
  89 static INLINE void
  90 _eglUnlockMutex(_EGLMutex *m)
  91 {
  92    ReleaseSemaphore(m);
  93 }
  94
  95 /* This is not supported. _eglInitMutex must alway be used */
  96 /* #define _EGL_MUTEX_INITIALIZER */
  97
  98 #include <aros/symbolsets.h> /* For ADD2INIT */
  99 /* Declare variable, declare init function, add to auto init. Ugly but works. */
 100 #define _EGL_DECLARE_MUTEX(m)   \
 101    _EGLMutex m;                 \
 102 static void init##m()           \
 103 {                               \
 104     _eglInitMutex(&m);          \
 105 }                               \
 106 ADD2INIT(init##m, 5);
 107
 108 #else
 109
 110 typedef int _EGLMutex;
 111 static INLINE void _eglInitMutex(_EGLMutex *m) { (void) m; }
 112 static INLINE void _eglDestroyMutex(_EGLMutex *m) { (void) m; }
 113 static INLINE void _eglLockMutex(_EGLMutex *m) { (void) m; }
 114 static INLINE void _eglUnlockMutex(_EGLMutex *m) { (void) m; }
 115
 116 #define _EGL_MUTEX_INITIALIZER 0
 117 #define _EGL_DECLARE_MUTEX(m) \
 118    _EGLMutex m = _EGL_MUTEX_INITIALIZER
 119
 120 #endif
 121
 122 #endif /* EGLMUTEX_INCLUDED */