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+PR_Unlock
+=========
+
+Releases a specified lock object. Releasing an unlocked lock results in
+an error.
+
+Attempting to release a lock that was locked by a different thread
+causes undefined behavior.
+
+
+Syntax
+------
+
+.. code::
+
+   #include <prlock.h>
+
+   PRStatus PR_Unlock(PRLock *lock);
+
+
+Parameter
+~~~~~~~~~
+
+:ref:`PR_Unlock` has one parameter:
+
+``lock``
+   A pointer to a lock object to be released.
+
+
+Returns
+~~~~~~~
+
+The function returns one of the following values:
+
+-  If successful, ``PR_SUCCESS``.
+-  If unsuccessful (for example, if the caller does not own the lock),
+   ``PR_FAILURE``.
+
+
+See Also
+--------
+
+-  `PR_Lock <PR_Lock>`__