Sharing of operation classes using Memache as process lock in PHP_PHP tutorial

Sharing of operation classes for using Memache as process lock in PHP

This article mainly introduces the sharing of operation classes for using Memache as process lock in PHP. This article directly gives the class implementation. Code and application examples, friends in need can refer to it

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135

//Use Memache as process lock class lock_processlock{ //key prefix protected $sLockKeyPre; //Retry interval protected $iLockRetryInterval; //Number of retries protected $iLockRetryCount; //Lock expiration time protected $iLockCacheTimeout; //Callback function after lock expiration protected $onLockTimeoutFunc; //Instance of memache protected $oMemcache; //Number of retries after failure to store memcache protected $iMemcacheRetryCount; public function __construct ($onLockTimeoutFunc=NULL) { $aLockConfig = get_config('', 'lock'); $this->sLockKeyPre = self::LOCK_KEY_PRE; $this->iLockRetryInterval = self::LOCK_RETRY_INTERVAL; $this->iLockRetryCount =self::LOCK_RETRY_COUNT; $this->iLockCacheTimeout = self::LOCK_CACHE_TIMEOUT; $this->iMemcacheRetryCount = self::LOCK_CACHE_TIMEOUT; if(!$onLockTimeoutFunc){ // If the lock is unsuccessful, call the callback function. If there is no callback function, use the provided in this class. $onLockTimeoutFunc ='onLockTimeout' ; } $this->onLockTimeoutFunc = $onLockTimeoutFunc; } /** Connect memcache server */ public function connect() { if (! isset ( $this->oMemcache )) { $this->oMemcache = new Memcache (); $this->oMemcache->connect ( '127.0.0.1', 11211 ); } return $this->oMemcache; } /* Add key to MeMcache */ public addMemcache($sKey, $sValue, $iTimeout){ for($i= 0 ; $i<$this->iMemcacheRetryCount){ $bRes = $this->oMemcache->add($sKey, $sValue, $iTimeout); if($bRes){ return true ; } // If the lock is unsuccessful, re-lock after sleep usleep($this->iLockRetryInterval*1000); } return false ; } /* Lock */ public function lock($sLockID){ $oMemcache = $this->connect(); $sKey = $this->sLockKeyPre . $sLockID; // If the lock is unsuccessful, you can try a few more times for($i = 0 ; $i <$this->iLockRetryCount ; $i ){ // The value set here can be set at will if($this->addMemcache($sKey,'1',$this->iLockCacheTimeout)){ return true ; } // If the lock is unsuccessful, re-lock after sleep usleep($this->iLockRetryInterval*1000); } // If it is still unsuccessful, the locking fails and the callback function is called, which is the operation that needs to be processed after the failure if(is_callable($this->onLockTimeoutFunc)){ //Call function call_user_func($this->onLockTimeoutFunc); } } /* Unlock operation */ public function unlock($sLockID){ $oMemcache = $this->connect(); $sKey = $this->sLockKeyPre . $sLockID; //Delete key return $this->oMemcache->delete($sKey); } /** If the locking is unsuccessful, perform the following operations */ public function onLockTimeout(){ echo ("lock timeout"); } } //Application Example $oLock = new lock_processlock(); $lockResource = "test"; // Lock $oLock->lock($lockResource); // Unlock

http://www.bkjia.com/PHPjc/976537.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/976537.htmlTechArticleOperation class sharing using Memache as a process lock in PHP This article mainly introduces the use of Memache as a process lock in PHP Sharing of operation classes, this article directly gives the class implementation code and application examples...