Qt synchronization and asynchronous Processing

1. mutex (qmutex)

Header file Declaration: # include <qmutex>

Mutex Declaration: qmutex m_mutex;

Mutex lock: m_mutex.lock ();

Unlock mutex: m_mutex.unlock ();

 

2. mutex lock (qmutexlocker)

Header file Declaration: # include <qmutexlocker>

Mutex lock Declaration: qmutexlocker mutexlocker (& m_mutex );

Mutex lock: Starting from the declaration (locking in the constructor)

Exclusive Lock unlock: automatically unlocked out of scope (unlocked in destructor)

 

3. Waiting condition (qwaitcondition)

Header file Declaration: # include <qwaitcondition>

Statement of waiting condition: qwaitcondtion m_waitcondition;

Waiting condition: m_waitconditon.wait (& m_muxtex, time );

Waiting condition wake-up: m_waitcondition.wakeall ();

Qt synchronization and asynchronous Processing