Lock

发布于 2015-08-09 09:33:29 | 489 次阅读 | 评论: 0 | 来源: 网络整理

swoole1.6.4版本增加了锁的实现。PHP代码中可以很方便地创建一个锁，用来实现数据同步。swoole_lock类支持5种锁的类型：

1. 文件锁 SWOOlE_FILELOCK
2. 读写锁 SWOOLE_RWLOCK
3. 信号量 SWOOLE_SEM
4. 互斥锁 SWOOLE_MUTEX
5. 自旋锁 SWOOlE_SPINLOCK

示例：

$lock = new swoole_lock(SWOOLE_MUTEX);
echo "[Master]create lockn";
$lock->lock();
if(pcntl_fork() > 0) 
{
        sleep(1);
        $lock->unlock();
} 
else
{
        echo "[Child] Wait Lockn";
        $lock->lock();
        echo "[Child] Get Lockn";
        $lock->unlock();
        exit("[Child] exitn");
}
echo "[Master]release lockn";
unset($lock);
sleep(1);
echo "[Master]exitn";

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