thread_mutex.H

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#ifndef _JOT_STD_THREAD_MUTEX_H
#define _JOT_STD_THREAD_MUTEX_H
// This file should contain generalized thread support, but for now
// it's just a pthread implmentation of a thread syncronization primitive.

#ifdef USE_PTHREAD
#include <pthread.h>
class ThreadMutex {
   public:
      ThreadMutex() { pthread_mutex_init(&_mtx, 0); }
     ~ThreadMutex() { pthread_mutex_destroy(&_mtx); }
      void lock()   { pthread_mutex_lock(&_mtx);    }
      void unlock() { pthread_mutex_unlock(&_mtx);  }
   protected:
      pthread_mutex_t _mtx;
};
#else
class ThreadMutex {
   public:
      ThreadMutex() { }
     ~ThreadMutex() { }
      void lock()   { }
      void unlock() { }
};
#endif

class CriticalSection {
   public:
      CriticalSection(ThreadMutex *mutex) : _mutex(mutex) { _mutex->lock(); }
      ~CriticalSection() { _mutex->unlock(); }
   protected:
      ThreadMutex *_mutex;
};
#endif

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