glwthread_timedrwlock_trywrlock 82 maint/gnulib/lib/pthread-rwlock.c return glwthread_timedrwlock_trywrlock (lock); glwthread_timedrwlock_trywrlock 64 maint/gnulib/lib/windows-timedrwlock.h extern int glwthread_timedrwlock_trywrlock (glwthread_timedrwlock_t *lock);