Panda3D

mutexPosixImpl.h

00001 // Filename: mutexPosixImpl.h
00002 // Created by:  drose (10Feb06)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef MUTEXPOSIXIMPL_H
00016 #define MUTEXPOSIXIMPL_H
00017 
00018 #include "dtoolbase.h"
00019 #include "selectThreadImpl.h"
00020 
00021 #ifdef HAVE_POSIX_THREADS
00022 
00023 #include <pthread.h>
00024 #include <errno.h>
00025 #include <assert.h>
00026 
00027 ////////////////////////////////////////////////////////////////////
00028 //       Class : MutexPosixImpl
00029 // Description : Uses Posix threads to implement a mutex.
00030 ////////////////////////////////////////////////////////////////////
00031 class EXPCL_DTOOL MutexPosixImpl {
00032 public:
00033   INLINE MutexPosixImpl();
00034   INLINE ~MutexPosixImpl();
00035 
00036   INLINE void acquire();
00037   INLINE bool try_acquire();
00038   INLINE void release();
00039 
00040   INLINE pthread_mutex_t *get_posix_lock();
00041 
00042 private:
00043   pthread_mutex_t _lock;
00044   friend class ConditionVarPosixImpl;
00045 };
00046 
00047 ////////////////////////////////////////////////////////////////////
00048 //       Class : ReMutexPosixImpl
00049 // Description : Uses Posix threads to implement a reentrant mutex.
00050 ////////////////////////////////////////////////////////////////////
00051 class EXPCL_DTOOL ReMutexPosixImpl {
00052 public:
00053   INLINE ReMutexPosixImpl();
00054   INLINE ~ReMutexPosixImpl();
00055 
00056   INLINE void acquire();
00057   INLINE bool try_acquire();
00058   INLINE void release();
00059 
00060   INLINE pthread_mutex_t *get_posix_lock();
00061 
00062 private:
00063   pthread_mutex_t _lock;
00064 };
00065 
00066 #include "mutexPosixImpl.I"
00067 
00068 #endif  // HAVE_POSIX_THREADS
00069 
00070 #endif
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