Current File : //opt/alt/php55/usr/share/pear/PHP/Invoker.php
<?php
declare(ticks = 1);
/**
* PHP_Invoker
*
* Copyright (c) 2011-2013, Sebastian Bergmann <sebastian@phpunit.de>.
* 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 Sebastian Bergmann 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, STRICT
* 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.
*
* @package PHP
* @subpackage Invoker
* @author Sebastian Bergmann <sebastian@phpunit.de>
* @copyright 2011-2013 Sebastian Bergmann <sebastian@phpunit.de>
* @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
* @link http://github.com/sebastianbergmann/php-invoker
* @since File available since Release 1.0.0
*/
/**
* Utility class for invoking callables with a timeout.
*
* @package PHP
* @subpackage Invoker
* @author Sebastian Bergmann <sebastian@phpunit.de>
* @copyright 2011-2013 Sebastian Bergmann <sebastian@phpunit.de>
* @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
* @version Release: 1.1.3
* @link http://github.com/sebastianbergmann/php-invoker
* @since Class available since Release 1.0.0
*/
class PHP_Invoker
{
/**
* @var integer
*/
protected $timeout;
/**
* Invokes a callable and raises an exception when the execution does not
* finish before the specified timeout.
*
* @param callable $callable
* @param array $arguments
* @param integer $timeout in seconds
* @return mixed
* @throws InvalidArgumentException
*/
public function invoke($callable, array $arguments, $timeout)
{
if (!is_callable($callable)) {
throw new InvalidArgumentException;
}
if (!is_integer($timeout)) {
throw new InvalidArgumentException;
}
pcntl_signal(SIGALRM, array($this, 'callback'), TRUE);
pcntl_alarm($timeout);
$this->timeout = $timeout;
try {
$result = call_user_func_array($callable, $arguments);
}
catch (Exception $e) {
pcntl_alarm(0);
throw $e;
}
pcntl_alarm(0);
return $result;
}
/**
* Invoked by pcntl_signal() when a SIGALRM occurs.
*/
public function callback()
{
throw new PHP_Invoker_TimeoutException(
sprintf(
'Execution aborted after %s',
PHP_Timer::secondsToTimeString($this->timeout)
)
);
}
}
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