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      1 /**************************************************************************
      2  *
      3  * Copyright 2009 Chia-I Wu <olvaffe (at) 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
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     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,
     20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     24  * DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 
     29 #ifndef EGLMUTEX_INCLUDED
     30 #define EGLMUTEX_INCLUDED
     31 
     32 #include "eglcompiler.h"
     33 
     34 #ifdef HAVE_PTHREAD
     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 #else
     67 
     68 typedef int _EGLMutex;
     69 static INLINE void _eglInitMutex(_EGLMutex *m) { (void) m; }
     70 static INLINE void _eglDestroyMutex(_EGLMutex *m) { (void) m; }
     71 static INLINE void _eglLockMutex(_EGLMutex *m) { (void) m; }
     72 static INLINE void _eglUnlockMutex(_EGLMutex *m) { (void) m; }
     73 
     74 #define _EGL_MUTEX_INITIALIZER 0
     75 #define _EGL_DECLARE_MUTEX(m) \
     76    _EGLMutex m = _EGL_MUTEX_INITIALIZER
     77 
     78 #endif
     79 
     80 #endif /* EGLMUTEX_INCLUDED */
     81