mem_usage_lock    281 ext/opcache/ZendAccelerator.c 	static const FLOCK_STRUCTURE(mem_usage_lock, F_RDLCK, SEEK_SET, 1, 1);
mem_usage_lock    283 ext/opcache/ZendAccelerator.c 	if (fcntl(lock_file, F_SETLK, &mem_usage_lock) == -1) {