Qt 3 Support Members for QMutex
The following class members are part of the Qt 3 support layer. They are provided to help you port old code to Qt 4. We advise against using them in new code.
Public Functions
Member Function Documentation
QMutex::QMutex ( bool recursive )
Use the constructor that takes a RecursionMode parameter instead.
bool QMutex::locked ()
Returns true if the mutex is locked by another thread; otherwise returns false.
It is generally a bad idea to use this function, because code that uses it has a race condition. Use tryLock() and unlock() instead.
For example, if you have code like
bool isLocked = mutex.locked();
you can rewrite it as
bool isLocked = true;
if (mutex.tryLock()) {
mutex.unlock();
isLocked = false;
}