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<?php |
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namespace Ackintosh\Snidel; |
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use Ackintosh\Snidel\Fork; |
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use Ackintosh\Snidel\ForkCollection; |
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use Ackintosh\Snidel\Pcntl; |
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class ForkContainer implements \ArrayAccess |
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{ |
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/** @var \Ackintosh\Snidel\Fork[] */ |
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private $forks = array(); |
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/** @var \Ackintosh\Snidel\Pcntl */ |
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private $pcntl; |
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/** @var array */ |
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private $tagsToPids = array(); |
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public function __construct() |
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{ |
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$this->pcntl = new Pcntl(); |
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} |
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/** |
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* fork process |
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* |
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* @return \Ackintosh\Snidel\Fork |
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* @throws \RuntimeException |
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*/ |
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public function fork($tag = null) |
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{ |
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$pid = $this->pcntl->fork(); |
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if ($pid === -1) { |
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throw new \RuntimeException('could not fork a new process'); |
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} |
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$this->forks[$pid] = new Fork($pid); |
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if ($tag !== null) { |
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$this->tagsToPids[$pid] = $tag; |
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} |
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return $this->forks[$pid]; |
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} |
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/** |
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* |
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* @param string $tag |
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* @return bool |
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*/ |
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public function hasTag($tag) |
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{ |
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return in_array($tag, $this->tagsToPids, true); |
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} |
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/** |
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* wait child |
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* |
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* @return \Ackintosh\Snidel\Fork |
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*/ |
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public function wait() |
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{ |
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$status = null; |
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$childPid = $this->pcntl->waitpid(-1, $status); |
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$this[$childPid]->setStatus($status); |
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$this[$childPid]->loadResult(); |
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return $this[$childPid]; |
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} |
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public function getCollection($tag = null) |
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{ |
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if ($tag === null) { |
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return new ForkCollection($this->forks); |
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} |
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return $this->getCollectionWithTag($tag); |
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} |
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/** |
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* return forks |
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* |
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* @param string $tag |
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* @return \Ackintosh\Snidel\Fork[] |
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*/ |
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private function getCollectionWithTag($tag) |
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{ |
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return new ForkCollection( |
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array_filter($this->forks, function ($fork) use ($tag) { |
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return $this->tagsToPids[$fork->getPid()] === $tag; |
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}) |
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); |
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} |
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/** |
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* @param mixed $offset |
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* @return bool |
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*/ |
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public function offsetExists($offset) |
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{ |
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if (isset($this->forks[$offset]) && $this->forks[$offset] !== '') { |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @param mixed $offset |
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* @return mixed |
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*/ |
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public function offsetGet($offset) |
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{ |
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if (!$this->offsetExists($offset)) { |
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return null; |
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} |
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return $this->forks[$offset]; |
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} |
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/** |
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* @param mixed $offset |
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* @return void |
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*/ |
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public function offsetSet($offset, $value) |
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{ |
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$this->forks[$offset] = $value; |
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} |
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/** |
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* @param mixed $offset |
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* @return void |
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*/ |
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public function offsetUnset($offset) |
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{ |
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unset($this->forks[$offset]); |
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} |
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} |
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138
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|
ackintosh /
snidel
