Move files to logical positions, no more copying of files.

libs/forkdaemon-php/examples/result_callback.php

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+<?php
+
+/**
+ * Sample of passing in work and getting back results using a callback
+ */
+
+declare(ticks=1);
+
+require_once(__DIR__ . '/../fork_daemon.php');
+
+/* setup forking daemon */
+$server = new fork_daemon();
+$server->max_children_set(5);
+$server->max_work_per_child_set(3);
+$server->register_child_run("process_child_run");
+$server->register_parent_child_exit("process_child_exit");
+$server->register_logging("logger", fork_daemon::LOG_LEVEL_ALL);
+$server->register_parent_results("process_results");
+
+test_nonblocking();
+
+function test_nonblocking()
+{
+	global $server;
+
+	echo "Adding 100 units of work\n";
+
+	/* add work */
+	$data_set = array();
+	for($i=0; $i<100; $i++) $data_set[] = $i;
+	shuffle($data_set);
+	$server->addwork($data_set);
+
+	echo "Processing work in non-blocking mode\n";
+
+	/* process work non blocking mode */
+	$server->process_work(false);
+
+	/* wait until all work allocated */
+	while ($server->work_sets_count() > 0)
+	{
+		echo "work set count: " . $server->work_sets_count() . "\n";
+		$server->process_work(false);
+		sleep(1);
+	}
+
+	/* wait until all children finish */
+	while ($server->children_running() > 0)
+	{
+		echo "waiting for " . $server->children_running() . " children to finish\n";
+		sleep(1);
+	}
+}
+
+/*
+ * CALLBACK FUNCTIONS
+ */
+
+function process_results($results, $identifier = "")
+{
+	echo "Results came back: " . implode(",", $results) . ($identifier == "" ? "" : " (id:$identifier)") . PHP_EOL;
+}
+
+/* registered call back function */
+function process_child_run($data_set, $identifier = "")
+{
+	echo "I'm child working on: " . implode(",", $data_set) . ($identifier == "" ? "" : " (id:$identifier)") . "\n";
+
+	$result = array_sum($data_set);
+	sleep(rand(1,3));
+
+	// return results
+	return $result;
+}
+
+/* registered call back function */
+function process_child_exit($pid, $identifier = "")
+{
+	echo "Child $pid just finished" . ($identifier == "" ? "" : " (id:$identifier)") . "\n";
+}
+
+/* registered call back function */
+function logger($message)
+{
+	echo "logger: " . $message . PHP_EOL;
+}