function lock_release

7.x lock.inc lock_release($name)
6.x lock.inc lock_release($name)
6.x lock-install.inc lock_release($name)

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.

Related topics

Functions to coordinate long-running operations across requests.
In most environments, multiple Drupal page requests (a.k.a. threads or processes) will execute in parallel. This leads to potential conflicts or race conditions when two requests execute the same code at the same time. A common example of this is a…
4 calls to lock_release()
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File

drupal-6.x/includes/lock.inc, line 206
A database-mediated implementation of a locking mechanism.

Code

function lock_release($name) {
  global $locks;

  unset($locks[$name]);
  db_query("DELETE FROM {semaphore} WHERE name = '%s' AND value = '%s'", $name, _lock_id());
}