40 lines
815 B
PHP
40 lines
815 B
PHP
<?php
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class pidfile {
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private $_file;
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private $_running;
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public function __construct($dir, $name) {
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$this->_file = "$dir/$name.pid";
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if (file_exists($this->_file)) {
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$pid = trim(@file_get_contents($this->_file));
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if (($pid != "") AND posix_kill($pid, 0)) {
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$this->_running = true;
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}
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}
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if (! $this->_running) {
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$pid = getmypid();
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file_put_contents($this->_file, $pid);
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}
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}
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public function __destruct() {
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if ((! $this->_running) && file_exists($this->_file)) {
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@unlink($this->_file);
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}
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}
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public function is_already_running() {
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return $this->_running;
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}
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public function running_time() {
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return(time() - @filectime($this->_file));
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}
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public function kill() {
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if (file_exists($this->_file))
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return(posix_kill(file_get_contents($this->_file), SIGTERM));
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}
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}
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