prj/tech/libsrc/sound/mixerlck.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // $Source: x:/prj/tech/libsrc/sound/RCS/mixerlck.h $
   3 // $Author: dc $
   4 // $Date: 1997/11/10 10:28:05 $
   5 // $Revision: 1.1 $
   6 //
   7 // Tools for thread synchronization and management.
   8 //
   9 //
  10
  11 #ifndef __MIXERLCK_H
  12 #define __MIXERLCK_H
  13
  14 #ifdef _WIN32
  15
  16 ///////////////////////////////////////////////////////////////////////////////
  17 //
  18 // CLASS: cMixerAutoLock
  19 //
  20 // a threadMutex autolock for the mixer
  21 // really could just be cMutexAutoLock, but hey
  22 //
  23
  24 class cMixerAutoLock
  25 {
  26 public:
  27     cMixerAutoLock(cThreadMutex & mutex);
  28     ~cMixerAutoLock();
  29
  30 private:
  31     cThreadMutex & m_mutex;
  32
  33     // make copy constructor and assignment operator inaccessible
  34     cMixerAutoLock(const cMixerAutoLock &);
  35     cMixerAutoLock &operator=(const cMixerAutoLock &);
  36 };
  37
  38 //////////////////////////////////////
  39 //
  40 // CLASS: cMixerAutoLock
  41 //
  42
  43 inline
  44 cMixerAutoLock::cMixerAutoLock(cThreadMutex & mutex)
  45   : m_mutex(mutex)
  46 {
  47 #ifndef SHIP
  48    DWORD hr=m_mutex.Wait();
  49    switch (hr)
  50    {
  51       case WAIT_TIMEOUT:
  52       case WAIT_ABANDONED:
  53          CriticalMsg("AutoLock of Mutex Wait Infinite Timeout or Abandon");
  54          break;
  55       case WAIT_OBJECT_0:
  56          break;
  57    }
  58 #else
  59    m_mutex.Wait();
  60 #endif
  61 }
  62
  63 ///////////////////////////////////////
  64
  65 inline
  66 cMixerAutoLock::~cMixerAutoLock()
  67 {
  68     m_mutex.Release();
  69 }
  70
  71 #endif // _WIN32
  72
  73 #endif /* !__MIXERLCK_H */