futures.php
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Authored By

	epriestley
	May 14 2014, 1:58 PM

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futures.php
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	#!/usr/bin/env php
	<?php

	$root = dirname(dirname(dirname(__FILE__)));
	require_once $root.'/scripts/__init_script__.php';

	$number_of_tasks = $argv[1];
	$seconds_per_task = $argv[2];
	$seconds_of_processing = $argv[3];

	$futures = array();
	for ($ii = 0; $ii < $number_of_tasks; $ii++) {
	$futures[] = new ExecFuture('sleep %d', $seconds_per_task);
	}

	echo "[T = ".t()."] Starting {$number_of_tasks} tasks, ".
	"which will take {$seconds_per_task} each, ".
	"and require {$seconds_of_processing} seconds to process.\n";
	foreach (Futures($futures) as $future) {
	sleep($seconds_of_processing);
	echo "[T = ".t()."] Completed a task.\n";
	}

	echo "[T = ".t()."] Done.\n";


	function t() {
	static $start;
	if (!$start) {
	$start = microtime(true);
	}

	return sprintf('%.1f', microtime(true) - $start);
	}