function lock_release in Memcache Storage 7
Release a lock previously acquired by lock_acquire().
This will release the named lock if it is still held by the current request.
Parameters
$name: The name of the lock.
File
- includes/lock.inc, line 152 
- A memcached based implementation of a locking mechanism. See includes/lock.inc for documentation.
Code
function lock_release($name) {
  global $locks;
  // We unset unconditionally since caller assumes lock is released anyway.
  unset($locks[$name]);
  // Remove current lock from memcached pool.
  $lock = MemcacheStorageAPI::get($name, 'semaphore');
  if ($lock && $lock == _lock_id()) {
    MemcacheStorageAPI::delete($name, 'semaphore');
  }
}