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/*****************************************************************************/
// Copyright 2006-2008 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in
// accordance with the terms of the Adobe license agreement accompanying it.
/*****************************************************************************/
/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_mutex.h#2 $ */
/* $DateTime: 2012/09/05 12:31:51 $ */
/* $Change: 847652 $ */
/* $Author: tknoll $ */
/******************************************************************************/
#ifndef __dng_mutex__
#define __dng_mutex__
/******************************************************************************/
#include "dng_flags.h"
/******************************************************************************/
#include "dng_types.h"
#if qDNGThreadSafe
#include "dng_pthread.h"
#endif
/******************************************************************************/
class dng_mutex
{
public:
enum
{
kDNGMutexLevelLeaf = 0x70000000u
};
dng_mutex (const char *mutexName,
uint32 mutexLevel = kDNGMutexLevelLeaf);
virtual ~dng_mutex ();
void Lock ();
void Unlock ();
const char *MutexName () const;
protected:
#if qDNGThreadSafe
pthread_mutex_t fPthreadMutex;
const uint32 fMutexLevel;
uint32 fRecursiveLockCount;
dng_mutex *fPrevHeldMutex;
const char * const fMutexName;
friend class dng_condition;
#endif
private:
// Hidden copy constructor and assignment operator.
dng_mutex (const dng_mutex &mutex);
dng_mutex & operator= (const dng_mutex &mutex);
};
/*****************************************************************************/
class dng_lock_mutex
{
private:
dng_mutex *fMutex;
public:
dng_lock_mutex (dng_mutex *mutex);
~dng_lock_mutex ();
private:
// Hidden copy constructor and assignment operator.
dng_lock_mutex (const dng_lock_mutex &lock);
dng_lock_mutex & operator= (const dng_lock_mutex &lock);
};
/*****************************************************************************/
class dng_unlock_mutex
{
private:
dng_mutex *fMutex;
public:
dng_unlock_mutex (dng_mutex *mutex);
~dng_unlock_mutex ();
private:
// Hidden copy constructor and assignment operator.
dng_unlock_mutex (const dng_unlock_mutex &unlock);
dng_unlock_mutex & operator= (const dng_unlock_mutex &unlock);
};
/*****************************************************************************/
#if qDNGThreadSafe
/*****************************************************************************/
class dng_condition
{
public:
dng_condition ();
~dng_condition ();
bool Wait (dng_mutex &mutex, double timeoutSecs = -1.0);
void Signal ();
void Broadcast ();
protected:
pthread_cond_t fPthreadCondition;
private:
// Hidden copy constructor and assignment operator.
dng_condition (const dng_condition &condition);
dng_condition & operator= (const dng_condition &condition);
};
/*****************************************************************************/
#endif // qDNGThreadSafe
/*****************************************************************************/
#endif
/*****************************************************************************/
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