pthread_cond_broadcast  Wakes all threads waiting on a condition
                           variable.

   pthread_cond_destroy    Destroys a condition variable.

   pthread_cond_init       Initializes a condition variable.

   pthread_cond_signal     Wakes at least one thread that is waiting
                           on a condition variable.

   pthread_cond_timedwait  Causes a thread to wait for a specified
                           period of time for a condition variable
                           to be signaled or broadcasted.

   pthread_cond_wait       Causes a thread to wait for a condition
                           variable to be signaled or broadcasted.