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Worker::collect

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(PECL pthreads >= 3.0.0)

Worker::collect — Collect references to completed tasks

Description

public Worker::collect ([ Callable $collector ] ) : int

Allows the worker to collect references determined to be garbage by the optionally given collector.

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Parameters

collector

A Callable collector that returns a boolean on whether the task can be collected or not. Only in rare cases should a custom collector need to be used.

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Return Values

The number of remaining tasks on the worker's stack to be collected.

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Examples

Example #1 A basic example of Worker::collect()

<?php
$worker = new Worker();

echo "There are currently {$worker->collect()} tasks on the stack to be collected\n";

for ($i = 0; $i < 15; ++$i) {
    $worker->stack(new class extends Threaded {});
}

echo "There are {$worker->collect()} tasks remaining on the stack to be collected\n";

$worker->start();

while ($worker->collect()); // blocks until all tasks have finished executing

echo "There are now {$worker->collect()} tasks on the stack to be collected\n";

$worker->shutdown();

The above example will output:

There are currently 0 tasks on the stack to be collected
There are 15 tasks remaining on the stack to be collected
There are now 0 tasks on the stack to be collected

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Document created the 30/01/2003, last modified the 26/10/2018
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References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

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