51 lines
1.1 KiB
PHP
51 lines
1.1 KiB
PHP
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<?php
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class Lock{
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const LOCKTIME = 3;
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private static $locked = array();
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private static $memcache = false;
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private static function init(){
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if( self::$memcache == false ){
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self::$memcache = memcache_init();
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}
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}
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public static function add( $key ){
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self::init();
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if( self::$memcache !== false ){
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$time = self::LOCKTIME;
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while( $time > 0 ){
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if( memcache_add( self::$memcache , $key , 'Locking' ,false , self::LOCKTIME ) ){
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self::$locked[$key] = 1;
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return;
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}else{
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$time--;
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sleep(1);
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}
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}
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}
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}
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public static function del( $key ){
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if( self::$locked[$key] ){
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self::init();
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if( self::$memcache !== false ){
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if( memcache_delete( self::$memcache , $key ) ){
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unset( self::$locked[$key] );
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return true;
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}
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}
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}
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}
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public static function delAll(){
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if( self::$locked && self::$memcache ){
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foreach( self::$locked as $k => $v ){
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if( memcache_delete( self::$memcache , $k ) ){
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unset( self::$locked[$k] );
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}
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}
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}
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}
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}
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function autounLock(){
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Lock::delAll();
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}
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register_shutdown_function( 'autounLock' );
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