BasicRequestTimeout.php
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BasicRequestTimeout.php
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	<?php

	namespace Wikimedia\RequestTimeout\Detail;

	use Wikimedia\RequestTimeout\RequestTimeout;

	/**
	* A fallback implementation used when Excimer is not available
	*/
	class BasicRequestTimeout extends RequestTimeout {
	/** @var float */
	private $limit;

	/** @var float */
	private $startTime;

	/** @var int The next critical section ID to use */
	private $nextCriticalId = 1;

	public function enterCriticalSection( $name, $emergencyLimit, $emergencyCallback ) {
	return $this->nextCriticalId++;
	}

	public function exitCriticalSection( $id ) {
	}

	/**
	* Get the elapsed CPU time. This can be used to estimate when the time
	* limit will expire.
	*
	* @return float
	*/
	private function getCpuTime() {
	$r = getrusage();
	return $r['ru_utime.tv_sec'] + $r['ru_stime.tv_sec']
	+ ( $r['ru_utime.tv_usec'] + $r['ru_stime.tv_usec'] ) * 1e-6;
	}

	public function setWallTimeLimit( $limit ) {
	if ( $limit === INF ) {
	$limit = 0;
	}
	$this->limit = ceil( $limit );
	$this->startTime = $this->getCpuTime();
	set_time_limit( $this->limit );
	}

	public function getWallTimeRemaining() {
	if ( $this->startTime !== null && $this->limit > 0 ) {
	return $this->limit - $this->getCpuTime() + $this->startTime;
	} else {
	return INF;
	}
	}

	public function getWallTimeLimit() {
	if ( $this->limit > 0 ) {
	return $this->limit;
	} else {
	return INF;
	}
	}
	}