QMutex Class Reference

#include <qmutex.h>

Public Member Functions
	QMutex ()
	~QMutex ()
void	lock ()
bool	tryLock ()
void	unlock ()

Private Member Functions
	QMutex (const QMutex &)
QMutex &	operator= (const QMutex &)

Private Attributes
QMutexPrivate *	d

Detailed Description

Definition at line 49 of file qmutex.h.

Constructor & Destructor Documentation

QMutex::QMutex

(

)

Definition at line 49 of file qmutex.cpp.

               : d(new QMutexPrivate())
{
}

QMutex::~QMutex

(

)

Definition at line 53 of file qmutex.cpp.

{
  delete d;
}

QMutex::QMutex ( const QMutex &  )

private

Member Function Documentation

void QMutex::lock

(

)

Definition at line 58 of file qmutex.cpp.

{
    //printf("%p: QMutex::lock(): enter\n",this);
    bool isLocked;
    isLocked = d->contenders.testAndSet(0, 1);
    if (!isLocked)
    {
      isLocked = d->contenders.fetchAndAdd(1)==0;
      if (!isLocked)
      {
        // didn't get the lock, wait for it
        //printf("%p: QMutex::lock(): wait() %d\n",this,(int)d->contenders);
        d->wait();

        // release lock
        d->contenders.fetchAndAdd(-1);
      }
    }
    //printf("%p: QMutex::lock(): leave\n",this);
}

QMutex& QMutex::operator= ( const QMutex &  )

private

bool QMutex::tryLock

(

)

Definition at line 79 of file qmutex.cpp.

{
    bool isLocked = d->contenders.testAndSet(0, 1);
    return isLocked;
}

void QMutex::unlock

(

)

Definition at line 85 of file qmutex.cpp.

{
    //printf("%p: QMutex::unlock(): enter %d\n",this,(int)d->contenders);
    if (!d->contenders.testAndSet(1, 0))
    {
         //printf("%p: QMutex::unlock(): wakeUp()\n",this);
         d->wakeUp();
    }
    //printf("%p: QMutex::unlock(): leave\n",this);
}

Member Data Documentation

QMutexPrivate* QMutex::d

private

Definition at line 63 of file qmutex.h.

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The documentation for this class was generated from the following files:

• doxygen-1.8.11/qtools/qmutex.h
• doxygen-1.8.11/qtools/qmutex.cpp