(PECL pthreads >= 2.0.0) Create a Condition
(PECL pthreads >= 2.0.0) Wait for Condition
(PECL pthreads >= 2.0.0) Broadcast a Condition
(PECL pthreads >= 2.0.0) Destroy a Condition
(PECL pthreads >= 2.0.0) Signal a Condition