62 lines
1.2 KiB
PHP
62 lines
1.2 KiB
PHP
<?php
|
|
|
|
/**
|
|
* @file
|
|
* A stub lock implementation to be used during the installation
|
|
* process when database access is not yet available. Because Drupal's
|
|
* install system should never be running in more than on concurrant
|
|
* request, we can bypass any need for locking.
|
|
*/
|
|
|
|
/**
|
|
* Initialize the locking system.
|
|
*/
|
|
function lock_init() {
|
|
}
|
|
|
|
/**
|
|
* Acquire (or renew) a lock, but do not block if it fails.
|
|
*
|
|
* @return
|
|
* TRUE if the lock was acquired, FALSE if it failed.
|
|
*/
|
|
function lock_acquire($name, $timeout = 30.0) {
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Check if lock acquired by a different process may be available.
|
|
*
|
|
* @return
|
|
* TRUE if there is no lock or it was removed, FALSE otherwise.
|
|
*/
|
|
function lock_may_be_available($name) {
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Wait for a lock to be available.
|
|
*
|
|
* @return
|
|
* TRUE if the lock holds, FALSE if it is available.
|
|
*/
|
|
function lock_wait($name, $delay = 30) {
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* Release a lock previously acquired by lock_acquire().
|
|
*
|
|
* This will release the named lock if it is still held by the current request.
|
|
*
|
|
* @param $name
|
|
* The name of the lock.
|
|
*/
|
|
function lock_release($name) {
|
|
}
|
|
|
|
/**
|
|
* Release all previously acquired locks.
|
|
*/
|
|
function lock_release_all($lock_id = NULL) {
|
|
}
|