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C:/temp/src/j2k/nto/Mutex.hpp

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#ifndef __J2K__PThread_Mutex_HPP__
#define __J2K__PThread_Mutex_HPP__

#include <j2k/Fred/Standard.hpp>
// #include <j2k/Fred/Error/JErrorController.hpp>

#define MC_OnError( x, y, z )  if( x != 0 ){ printf( "An error occured [%d]\n", x ); } 

#include <errno.h>
#include <pthread.h>
#include <time.h>

// Uses:
// pthread_mutex_t
// pthread_mutex_attr_t

class PThread_Mutex {
public:

/******************************************************
 **  Description of pthread_mutex_attr_t arguments.  **
 **                                                  **
 **  Attribute         Default Value                 **
 **  =========         =============                 **
 **  detachstate       PTHREAD_CREATE_JOINABLE       **
 **  schedpolicy       PTHREAD_INHERIT_SCHED         **
 **  schedparam        Inherited from parent thread  **
 **  contentionscope   PTHREAD_SCOPE_SYSTEM          **
 **  stacksize         4096                          **
 **  stackaddr         NULL                          **
 ******************************************************/

  // Default Constructor
  PThread_Mutex();

  // Destructor
  virtual ~PThread_Mutex();

  // Lock the mutex
  void lock();

  // Unlock the mutex
  void unlock();

  // Try to lock a mutex
  inline void tryLock();

  // Get the maximum priority (ceiling value) for the mutex
  inline int getPriorityCeiling();

  // Set the maximum priority (ceiling value) for the mutex
  inline int setPriorityCeiling( int new_ceiling );

  // Get the mutex attribute type
  inline int getType();

  // Get the mutex attribute protocol
  inline int getProtocol();

  inline void P() { lock(); }
  inline void V() { unlock(); }

private:
  int   mutex_type;
  int   protocol;
  int   prioceiling;
  int   state;
  pid_t owner;

  pthread_mutexattr_t attr;
  pthread_mutex_t     mutex;


// Not implemented or needed.
private:
  // Copy constructor
  inline PThread_Mutex( const PThread_Mutex& src );

  // Assign operator
  inline const PThread_Mutex& operator=( const PThread_Mutex& src );
};

typedef PThread_Mutex  Mutex;


#include <j2k/nto/Mutex.inl>

#endif

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