friendica/src/Util/Pidfile.php

87 lines
1.4 KiB
PHP
Raw Normal View History

<?php
/**
* @file src/Util/Pidfile.php
*/
namespace Friendica\Util;
/**
* @brief Pidfile class
*/
class Pidfile
{
private $file;
private $running;
private $pid;
/**
* @param string $dir path
* @param string $name filename
* @return void
*/
public function __construct($dir, $name)
{
$this->file = "$dir/$name";
$this->running = false;
if (file_exists($this->file)) {
$this->pid = trim(@file_get_contents($this->file));
if (($this->pid != "") && posix_kill($this->pid, 0)) {
$this->running = true;
}
}
if (!$this->running) {
$this->pid = getmypid();
file_put_contents($this->file, $this->pid);
}
}
/**
* @return void
*/
public function __destruct()
{
if (!$this->running && file_exists($this->file)) {
@unlink($this->file);
}
}
/**
* @brief Check if a process with this pid file is already running
* @return boolean Is it running?
*/
public function isRunning()
{
return $this->running;
}
/**
* @brief Return the pid of the process
* @return boolean process id
*/
public function pid()
{
return $this->pid;
}
/**
* @brief Returns the seconds that the old process was running
* @return integer run time of the old process
*/
public function runningTime()
{
return time() - @filectime($this->file);
}
/**
* @brief Kills the old process
* @return boolean
*/
public function kill()
{
if (!empty($this->pid)) {
return posix_kill($this->pid, SIGTERM);
}
}
}