Initializing Mutexes and Condition Variables

RingBuffer.C

template<class Token> RingBuffer<Token>::RingBuffer(unsigned int size) : buffer(size), filled(0), in(0), out(0) { pthread_mutex_init(&mutex, 0); pthread_cond_init(&nonEmpty, 0); pthread_cond_init(&nonFull, 0); } // constructor

Both, mutex and condition variables need to be initialized.

Mutexes are initially unlocked.

RingBuffer.C

template<class Token> RingBuffer<Token>::~RingBuffer() { pthread_mutex_destroy(&mutex); pthread_cond_destroy(&nonEmpty); pthread_cond_destroy(&nonFull); } // destructor

Mutex and condition variables should be destroyed if they are no longer be used. This is best put into a destructor.

Note that these operations must not be invoked if there are still other threads which depend on them.

	Both, mutex and condition variables need to be initialized.
	Mutexes are initially unlocked.

	Mutex and condition variables should be destroyed if they are no longer be used. This is best put into a destructor.
	Note that these operations must not be invoked if there are still other threads which depend on them.