Tries to obtain a write lock on @rw_lock. If any other thread holds a read or write lock on @rw_lock, it immediately returns %FALSE. Otherwise it locks @rw_lock and returns %TRUE.
%TRUE if @rw_lock could be locked
2.32
See Implementation
Tries to obtain a write lock on @rw_lock. If any other thread holds a read or write lock on @rw_lock, it immediately returns %FALSE. Otherwise it locks @rw_lock and returns %TRUE.