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76 lines
2.3 KiB
76 lines
2.3 KiB
<?php
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// +----------------------------------------------------------------------
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// | 萤火商城系统 [ 致力于通过产品和服务，帮助商家高效化开拓市场 ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2017~2023 https://www.yiovo.com All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed 这不是一个自由软件，不允许对程序代码以任何形式任何目的的再发行
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// +----------------------------------------------------------------------
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// | Author: 萤火科技 <admin@yiovo.com>
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// +----------------------------------------------------------------------
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declare (strict_types=1);
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namespace app\common\library;
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/**
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* 文件阻塞锁
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* 用于并发情况下保持数据的原子性, 仅适用于轻量并发场景，如果是高并发场景请使用redis
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* Class Lock
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* @package app\common\library
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*/
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class Lock
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{
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// 文件锁资源树
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static $resource = [];
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/**
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* 加锁
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* @param string $uniqueId
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* @return bool
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*/
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public static function lockUp(string $uniqueId): bool
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{
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clearstatcache();
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static::$resource[$uniqueId] = fopen(static::getFilePath($uniqueId), 'w+');
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return flock(static::$resource[$uniqueId], LOCK_EX);
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}
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/**
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* 解锁
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* @param string $uniqueId
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* @return bool
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*/
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public static function unLock(string $uniqueId): bool
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{
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clearstatcache();
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if (!isset(static::$resource[$uniqueId])) return false;
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flock(static::$resource[$uniqueId], LOCK_UN);
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fclose(static::$resource[$uniqueId]);
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return static::deleteFile($uniqueId);
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}
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/**
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* 获取锁文件的路径
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* @param string $uniqueId
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* @return string
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*/
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private static function getFilePath(string $uniqueId): string
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{
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clearstatcache();
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$dirPath = runtime_root_path() . 'lock/';
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!is_dir($dirPath) && mkdir($dirPath, 0755, true);
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return $dirPath . md5($uniqueId) . '.lock';
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}
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/**
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* 删除锁文件
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* @param string $uniqueId
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* @return bool
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*/
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private static function deleteFile(string $uniqueId): bool
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{
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clearstatcache();
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$filePath = static::getFilePath($uniqueId);
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return file_exists($filePath) && unlink($filePath);
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}
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}
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