CAReadWriteLock.hpp

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/*
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    other materials provided with the distribution.
 
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    may be used to endorse or promote products derived from this software without specific 
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*/
#ifndef __CAREADWRITELOCK__
#define __CAREADWRITELOCK__
#ifndef HAVE_PTHREAD_MUTEXES
  #include "CAMutex.hpp"
#endif
 
class CAReadWriteLock
  {
    public:
      CAReadWriteLock();
      ~CAReadWriteLock();
 
      SINT32 lockRead()
        {
          #ifdef  HAVE_PTHREAD_MUTEXES
            if(pthread_rwlock_rdlock(m_pMutex)==0)
              return E_SUCCESS;
            return E_UNKNOWN;
          #else
            return m_pMutex->down();
          #endif
        }
 
      SINT32 lockWrite()
        {
          #ifdef  HAVE_PTHREAD_MUTEXES
            if(pthread_rwlock_wrlock(m_pMutex)==0)
              return E_SUCCESS;
            return E_UNKNOWN;
          #else
            return m_pMutex->down();
          #endif
      }
    
    SINT32 unlock()
        {
#ifdef HAVE_PTHREAD_MUTEXES
          if (pthread_rwlock_unlock(m_pMutex) == 0)
            return E_SUCCESS;
          return E_UNKNOWN;
#else
          return m_pMutex->up();
#endif
        }
 
      
    
    private:
      #ifdef HAVE_PTHREAD_MUTEXES
        pthread_rwlock_t* m_pMutex;
      #else
        CAMutex* m_pMutex;
      #endif
 
  };
#endif