function _lock_id

7.x lock.inc _lock_id()
6.x lock.inc _lock_id()

Helper function to get this request's unique id.

Related topics

3 calls to _lock_id()
lock_acquire in drupal-6.x/includes/lock.inc
Acquire (or renew) a lock, but do not block if it fails.
lock_release in drupal-6.x/includes/lock.inc
Release a lock previously acquired by lock_acquire().
lock_release_all in drupal-6.x/includes/lock.inc
Release all previously acquired locks.

File

drupal-6.x/includes/lock.inc, line 74
A database-mediated implementation of a locking mechanism.

Code

function _lock_id() {
  static $lock_id;

  if (!isset($lock_id)) {
    // Assign a unique id.
    $lock_id = uniqid(mt_rand(), TRUE);
    // We only register a shutdown function if a lock is used.
    register_shutdown_function('lock_release_all', $lock_id);
  }
  return $lock_id;
}