internalmutex.hpp

OSB-PIK-OpenVXI-3.0.0源代码 “中国XML论坛 - 专业的XML技术讨论区--XML在语音技术中的应用”

 /****************License************************************************
  *
  * Copyright 2000-2003.  ScanSoft, Inc.    
  *
  * Use of this software is subject to notices and obligations set forth 
  * in the SpeechWorks Public License - Software Version 1.2 which is 
  * included with this software. 
  *
  * ScanSoft is a registered trademark of ScanSoft, Inc., and OpenSpeech, 
  * SpeechWorks and the SpeechWorks logo are registered trademarks or 
  * trademarks of SpeechWorks International, Inc. in the United States 
  * and other countries.
  *
  ***********************************************************************/
 

 #include "VXItrd.h"
 
 class InternalMutex {
 public:
   void Lock() const
   { if (error) return;
     error = (VXItrdMutexLock(mutex) != VXItrd_RESULT_SUCCESS); }
 
   void Unlock() const
   { if (error) return;
     error = (VXItrdMutexUnlock(mutex) != VXItrd_RESULT_SUCCESS); }
 
   bool IsBad() const
   { return error; }
 
   InternalMutex() : mutex(NULL)
   { error = (VXItrdMutexCreate(&mutex) != VXItrd_RESULT_SUCCESS); }
 
   ~InternalMutex()
   { if (mutex != NULL) VXItrdMutexDestroy(&mutex);  mutex = NULL;  }
 
 private:
   mutable bool error;
   mutable VXItrdMutex * mutex;
 };