OW_ThreadOnce.hpp

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00001 /*******************************************************************************
00002 * Copyright (C) 2005 Vintela, Inc. All rights reserved.
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00014 *  - Neither the name of Vintela, Inc. nor the names of its
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00030 
00035 #ifndef OW_THREAD_ONCE_HPP_INCLUDE_GUARD_
00036 #define OW_THREAD_ONCE_HPP_INCLUDE_GUARD_
00037 #include "OW_config.h"
00038 
00039 #if defined(OW_USE_PTHREAD)
00040 #include <pthread.h>
00041 #endif
00042 
00043 namespace OW_NAMESPACE
00044 {
00045 
00046 #if defined(OW_USE_PTHREAD)
00047 
00048 typedef pthread_once_t OnceFlag;
00049 #define OW_ONCE_INIT PTHREAD_ONCE_INIT
00050 
00051 #elif defined(OW_WIN32)
00052 
00053 typedef long OnceFlag;
00054 #define OW_ONCE_INIT 0
00055 
00056 #else
00057 #error "Port me!"
00058 #endif
00059 
00064 void OW_COMMON_API callOnce(OnceFlag& flag, void (*func)());
00065 
00066 
00067 
00068 #if defined(OW_USE_PTHREAD)
00069 
00070 inline void callOnce(OnceFlag& flag, void (*func)())
00071 {
00072    pthread_once(&flag, func);
00073 }
00074 
00075 #endif
00076 
00077 
00078 } // end namespace OW_NAMESPACE
00079 
00080 #endif
00081 

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