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i forgot about a queue and a lock implementation

pull/40/head
czaks 6 years ago
parent
commit
bb9aaad899
  1. 39
      inc/lock.php
  2. 49
      inc/queue.php

39
inc/lock.php

@ -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;
}
}

49
inc/queue.php

@ -0,0 +1,49 @@
<?php
class Queue {
function __construct($key) { global $config;
if ($config['queue']['enabled'] == 'fs') {
$this->lock = new Lock($key);
$key = str_replace('/', '::', $key);
$key = str_replace("\0", '', $key);
$this->key = "tmp/queue/$key/";
}
}
function push($str) { global $config;
if ($config['queue']['enabled'] == 'fs') {
$this->lock->get_ex();
file_put_contents($this->key.microtime(true), $str);
$this->lock->free();
}
return $this;
}
function pop($n = 1) { global $config;
if ($config['queue']['enabled'] == 'fs') {
$this->lock->get_ex();
$dir = opendir($this->key);
$paths = array();
while ($n > 0) {
$path = readdir($dir);
if ($path === FALSE) break;
elseif ($path == '.' || $path == '..') continue;
else { $paths[] = $path; $n--; }
}
$out = array();
foreach ($paths as $v) {
$out []= file_get_contents($this->key.$v);
unlink($this->key.$v);
}
$this->lock->free();
return $out;
}
}
}
// Don't use the constructor. Use the get_queue function.
$queues = array();
function get_queue($name) { global $queues;
return $queues[$name] = isset ($queues[$name]) ? $queues[$name] : new Queue($name);
}
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