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<?php
namespace Pheanstalk\Socket;
/**
* A limited history of recent socket write length/success.
*
* Facilitates retrying zero-length writes a limited number of times,
* avoiding infinite loops.
* Based on a patch from https://github.com/leprechaun
* https://github.com/pda/pheanstalk/pull/24
* A bitfield could be used instead of an array for efficiency.
* @author Paul Annesley
* @package Pheanstalk
* @license http://www.opensource.org/licenses/mit-license.php
*/
class WriteHistory
{
private $_limit;
private $_data = [];
* @param int $limit
public function __construct($limit)
$this->_limit = $limit;
}
* Whether the history has reached its limit of entries.
public function isFull()
return count($this->_data) >= $this->_limit;
public function hasWrites()
return (bool) array_sum($this->_data);
public function isFullWithNoWrites()
return $this->isFull() && !$this->hasWrites();
* Logs the return value from a write call.
* Returns the input value.
public function log($write)
if ($this->isFull()) {
array_shift($this->_data);
$this->_data[] = (int) $write;
return $write;
PyRowMan /
pheanstalk
