Obtain a write lock on rw_lock. If another thread currently holds
a read or write lock on rw_lock, the current thread will block
until all other threads have dropped their locks on rw_lock.
Calling glib.rwlock.RWLock.writerLock while the current thread already
owns a read or write lock on rw_lock leads to undefined behaviour.
Obtain a write lock on rw_lock. If another thread currently holds a read or write lock on rw_lock, the current thread will block until all other threads have dropped their locks on rw_lock.
Calling glib.rwlock.RWLock.writerLock while the current thread already owns a read or write lock on rw_lock leads to undefined behaviour.