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49 QMutex::QMutex() : d(new QMutexPrivate())
60 //printf("%p: QMutex::lock(): enter\n",this);
62 isLocked = d->contenders.testAndSet(0, 1);
65 isLocked = d->contenders.fetchAndAdd(1)==0;
68 // didn't get the lock, wait for it
69 //printf("%p: QMutex::lock(): wait() %d\n",this,(int)d->contenders);
73 d->contenders.fetchAndAdd(-1);
76 //printf("%p: QMutex::lock(): leave\n",this);
79 bool QMutex::tryLock()
81 bool isLocked = d->contenders.testAndSet(0, 1);
87 //printf("%p: QMutex::unlock(): enter %d\n",this,(int)d->contenders);
88 if (!d->contenders.testAndSet(1, 0))
90 //printf("%p: QMutex::unlock(): wakeUp()\n",this);
93 //printf("%p: QMutex::unlock(): leave\n",this);