#!/usr/bin/env php

<?php

declare(strict_types=1);

/**

* This example shows how to wait for a collection of coroutines to finish in PHP applications. It has 3 coroutines

* executed, and takes about 3 seconds to finish.

*

* Class \Swoole\Coroutine\Barrier is defined in this file:

* https://github.com/swoole/library/blob/master/src/core/Coroutine/Barrier.php

*

* This example uses class \Swoole\Coroutine\Barrier, which is implemented using destruct methods in PHP. Class

* \Swoole\Coroutine\Barrier works similar to class \Swoole\Coroutine\WaitGroup, which is implemented using channels

* (class \Swoole\Coroutine\Channel).

* @see https://github.com/deminy/swoole-by-examples/blob/master/examples/csp/waitgroup.php

*

* How to run this script:

* docker compose exec -t client bash -c "time ./csp/barrier.php"

*/

use Swoole\Coroutine\Barrier;

use function Swoole\Coroutine\go;

use function Swoole\Coroutine\run;

run(function (): void {

$barrier = Barrier::make();

go(function () use ($barrier): void { // @phpstan-ignore closure.unusedUse

sleep(1);

});

go(function () use ($barrier): void { // @phpstan-ignore closure.unusedUse

sleep(2);

});

go(function () use ($barrier): void { // @phpstan-ignore closure.unusedUse

sleep(3);

});

Barrier::wait($barrier); // Wait those 3 coroutines to finish.

// Any code here won't be executed until all 3 coroutines created in this function finish execution.

});