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<?php
/**
* Sample of passing in work and getting back results using a call at the
* end of the child processing
*/
declare(ticks=1);
require_once(__DIR__ . '/../fork_daemon.php');
/* setup forking daemon */
$server = new fork_daemon();
$server->max_children_set(100);
$server->max_work_per_child_set(3);
$server->store_result_set(true);
$server->register_child_run("process_child_run");
$server->register_parent_child_exit("process_child_exit");
$server->register_logging("logger", fork_daemon::LOG_LEVEL_ALL);
// no callback with this method since we check results at the end
test_nonblocking();
// since deferred results, check at the end
$results = $server->get_all_results();
var_dump($results);
echo "Sum: " . array_sum($results) . PHP_EOL;
echo "Count: " . count($results) . PHP_EOL;
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";
echo "Sum: " . array_sum($data_set) . PHP_EOL;
/* 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 " . $server->children_running() . " children to finish\n";
sleep(1);
}
}
/*
* CALLBACK FUNCTIONS
*/
/* registered call back function */
function process_child_run($data_set, $identifier = "")
{
echo "I'm child working on: " . implode(",", $data_set) . ($identifier == "" ? "" : " (id:$identifier)") . "\n";
sleep(rand(1,3));
// just do a sum and return it as the result
$result = array_sum($data_set);
// 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;
}