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i forgot about a queue and a lock implementation

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czaks 2016-05-08 15:37:49 +02:00
parent f24e0f9814
commit bb9aaad899
2 changed files with 88 additions and 0 deletions
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39
inc/lock.php Normal file
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@ -0,0 +1,39 @@
<?php
class Lock {
function __construct($key) { global $config;
if ($config['lock']['enabled'] == 'fs') {
$key = str_replace('/', '::', $key);
$key = str_replace("\0", '', $key);
$this->f = fopen("tmp/locks/$key", "w");
}
}
// Get a shared lock
function get($nonblock = false) { global $config;
if ($config['lock']['enabled'] == 'fs') {
$wouldblock = false;
flock($this->f, LOCK_SH | ($nonblock ? LOCK_NB : 0), $wouldblock);
if ($nonblock && $wouldblock) return false;
}
return $this;
}
// Get an exclusive lock
function get_ex($nonblock = false) { global $config;
if ($config['lock']['enabled'] == 'fs') {
$wouldblock = false;
flock($this->f, LOCK_EX | ($nonblock ? LOCK_NB : 0), $wouldblock);
if ($nonblock && $wouldblock) return false;
}
return $this;
}
// Free a lock
function free() { global $config;
if ($config['lock']['enabled'] == 'fs') {
flock($this->f, LOCK_UN);
}
return $this;
}
}