src/Core/Lock/Lock.php

   1 <?php
   2
   3 namespace Friendica\Core\Lock;
   4
   5 /**
   6  * Class AbstractLock
   7  *
   8  * @package Friendica\Core\Lock
   9  *
  10  * Basic class for Locking with common functions (local acquired locks, releaseAll, ..)
  11  */
  12 abstract class Lock implements ILock
  13 {
  14         /**
  15          * @var array The local acquired locks
  16          */
  17         protected $acquiredLocks = [];
  18
  19         /**
  20          * Check if we've locally acquired a lock
  21          *
  22          * @param string key The Name of the lock
  23          *
  24          * @return bool      Returns true if the lock is set
  25          */
  26         protected function hasAcquiredLock($key)
  27         {
  28                 return isset($this->acquireLock[$key]) && $this->acquiredLocks[$key] === true;
  29         }
  30
  31         /**
  32          * Mark a locally acquired lock
  33          *
  34          * @param string $key The Name of the lock
  35          */
  36         protected function markAcquire($key)
  37         {
  38                 $this->acquiredLocks[$key] = true;
  39         }
  40
  41         /**
  42          * Mark a release of a locally acquired lock
  43          *
  44          * @param string $key The Name of the lock
  45          */
  46         protected function markRelease($key)
  47         {
  48                 unset($this->acquiredLocks[$key]);
  49         }
  50
  51         /**
  52          * Releases all lock that were set by us
  53          *
  54          * @return boolean Was the unlock of all locks successful?
  55          */
  56         public function releaseAll()
  57         {
  58                 $return = true;
  59
  60                 foreach ($this->acquiredLocks as $acquiredLock => $hasLock) {
  61                         if (!$this->releaseLock($acquiredLock)) {
  62                                 $return = false;
  63                         }
  64                 }
  65
  66                 return $return;
  67         }
  68 }