Conditions - POSIX Implementation

As with the mutex class, the POSIX version of the condition is trivial, due to the native support by the OS. The POSIX APIs allow you to specify a mutex to use each time you wait on the condition. However, as I can't see any use for this, and it leaves more room for error, I've decided to bind the condition to its mutex on construction. The code:

class CCondition { private: CMutex &m_pairedMutex; // Paired mutex pthread_cond_t m_cond; // Condition variable public: inline CCondition(CMutex &mutex) : m_pairedMutex(mutex) { if (pthread_cond_init(&m_cond, NULL) != 0) throw std::bad_alloc("Unable to create condition"); } inline ~CCondition() { verify(pthread_cond_destroy(&m_cond) == 0); } inline void Signal(bool bSignalAll = false) { int nRetVal; if (bSignalAll) nRetVal = pthread_cond_broadcast(&m_cond); // Signal all else nRetVal = pthread_cond_signal(&m_cond); // Signal one assert(nRetVal == 0); } inline void Wait() { verify(pthread_cond_wait(&m_cond, &m_pairedMutex.GetMutex()) == 0); } };