Lock

Latest version: pecl install openswoole-25.2.0 | composer require openswoole/core:22.1.5

Lock can be used for data synchronization between multiple processes.

Locks should not be used within coroutine context.

Methods

Lock types:

Constant	Description
OpenSwoole\Constant::FILELOCK	file lock
OpenSwoole\Constant::RWLOCK	read write lock
OpenSwoole\Constant::SEM	Linux semaphore
OpenSwoole\Constant::MUTEX	Mutex
OpenSwoole\Constant::SPINLOCK	spin lock

Example:

<?php

$lock = new OpenSwoole\Lock(OpenSwoole\Constant::MUTEX);
echo "[Master] Create lock\n";
$lock->lock();
if (pcntl_fork() > 0)
{
    sleep(1);
    $lock->unlock();
}
else
{
    echo "[Child] Wait Lock\n";
    $lock->lock();
    echo "[Child] Get Lock\n";
    $lock->unlock();
    exit("[Child] exit\n");
}
echo "[Master]release lock\n";
unset($lock);
sleep(1);
echo "[Master]exit\n";

Last updated on September 20, 2022

⭐ at Github Follow Twitter Subscribe Newsletter Join Slack Join Discord