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externals/JAXL/core/jaxl_clock.php
- This file was added.
<?php | |||||
/** | |||||
* Jaxl (Jabber XMPP Library) | |||||
* | |||||
* Copyright (c) 2009-2012, Abhinav Singh <me@abhinavsingh.com>. | |||||
* All rights reserved. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* | |||||
* * Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* | |||||
* * Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in | |||||
* the documentation and/or other materials provided with the | |||||
* distribution. | |||||
* | |||||
* * Neither the name of Abhinav Singh nor the names of his | |||||
* contributors may be used to endorse or promote products derived | |||||
* from this software without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRIC | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | |||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |||||
* POSSIBILITY OF SUCH DAMAGE. | |||||
* | |||||
*/ | |||||
class JAXLClock { | |||||
// current clock time in microseconds | |||||
private $tick = 0; | |||||
// current Unix timestamp with microseconds | |||||
public $time = null; | |||||
// scheduled jobs | |||||
public $jobs = array(); | |||||
public function __construct() { | |||||
$this->time = microtime(true); | |||||
} | |||||
public function __destruct() { | |||||
_info("shutting down clock server..."); | |||||
} | |||||
public function tick($by=null) { | |||||
// update clock | |||||
if($by) { | |||||
$this->tick += $by; | |||||
$this->time += $by / pow(10,6); | |||||
} | |||||
else { | |||||
$time = microtime(true); | |||||
$by = $time - $this->time; | |||||
$this->tick += $by * pow(10, 6); | |||||
$this->time = $time; | |||||
} | |||||
// run scheduled jobs | |||||
foreach($this->jobs as $ref=>$job) { | |||||
if($this->tick >= $job['scheduled_on'] + $job['after']) { | |||||
//_debug("running job#".($ref+1)." at tick ".$this->tick.", scheduled on ".$job['scheduled_on']." after ".$job['after'].", periodic ".$job['is_periodic']); | |||||
call_user_func($job['cb'], $job['args']); | |||||
if(!$job['is_periodic']) { | |||||
unset($this->jobs[$ref]); | |||||
} | |||||
else { | |||||
$job['scheduled_on'] = $this->tick; | |||||
$job['runs']++; | |||||
$this->jobs[$ref] = $job; | |||||
} | |||||
} | |||||
} | |||||
} | |||||
// calculate execution time of callback | |||||
public function tc($callback, $args=null) { | |||||
} | |||||
// callback after $time microseconds | |||||
public function call_fun_after($time, $callback, $args=null) { | |||||
$this->jobs[] = array( | |||||
'scheduled_on' => $this->tick, | |||||
'after' => $time, | |||||
'cb' => $callback, | |||||
'args' => $args, | |||||
'is_periodic' => false, | |||||
'runs' => 0 | |||||
); | |||||
return sizeof($this->jobs); | |||||
} | |||||
// callback periodically after $time microseconds | |||||
public function call_fun_periodic($time, $callback, $args=null) { | |||||
$this->jobs[] = array( | |||||
'scheduled_on' => $this->tick, | |||||
'after' => $time, | |||||
'cb' => $callback, | |||||
'args' => $args, | |||||
'is_periodic' => true, | |||||
'runs' => 0 | |||||
); | |||||
return sizeof($this->jobs); | |||||
} | |||||
// cancel a previously scheduled callback | |||||
public function cancel_fun_call($ref) { | |||||
unset($this->jobs[$ref-1]); | |||||
} | |||||
} | |||||
?> |