<?php
/*
* Note: in 5.4 series the output is handled differently from multiple threads on the command line, sometimes giving the idea that this sort of thing is executing the opposite to how it should...
* It isn't, but there's not much to be done about the new output handling in 5.4 ... we'll just have to live with it ...
*/
class ExampleThread extends Thread
{
public function run()
{
printf("I'm in the thread and you're waiting for me ...\n");
printf("Allowing process to continue ...\n");
printf("Thread Notifying Process 1: %d\n", $this->notify());
printf("Process Waiting ...\n");
printf("Thread Notifying Process 2: %b\n", $this->notify());
$this->wait();
printf("Thread exiting ...");
}
}
$t = new ExampleThread();
if ($t->start(true)) {
printf("Process Working ... then ...\n");
printf("Process Waited: %d\n", $t->wait());
printf("Now doing some work while thread is waiting ...\n");
usleep(1000000);
printf("And notify thread: %d\n", $t->notify());
}
$this->data = $data;
$this->mine = strrev($this->data);
}
public function run()
{
printf("IN->%s: %s\n", __METHOD__, microtime(true));
printf("%s: %s\n", __METHOD__, $this->exclusive(strrev($this->data)));
printf("%s: %s\n", __METHOD__, microtime(true));
printf("%s: %s\n", __METHOD__, $this->noaccess());
printf("OUT->%s: %s\n", __METHOD__, microtime(true));
}
}
/*
* This comment is not in use.
*/
$thread = new ExampleThread(rand() * 10);
echo 'Block 1 ' . PHP_EOL;
$thread->start();
echo 'Block 2 ' . PHP_EOL;
/*
* You can see that this call is blocked until the threading context returns from the method
*/
printf("Process: %s\n", $thread->exclusive());
echo 'Block 3 ' . PHP_EOL;
/*
* Passing an argument on the command line will show you what happens when you call a private method from here
*/
if (isset($argv[1]) && $argv[1]) {
printf("Process: %s\n", $thread->noaccess());
}
echo 'Block 4 ' . PHP_EOL;
echo "\n";
/* always synchronize before calling notify/wait */
$this->synchronized(function ($me) {
/* there's no harm in notifying when no one is waiting */
/* better that you notify no one than deadlock in any case */
$me->notify();
}, $this);
} catch (EngineException $e) {
var_dump($e);
}
}
}
/* construct the new thread */
$t = new ExampleThread();
/* start the new thread */
if ($t->start()) {
printf("\nProcess Working ...\n");
do_some_work(1000);
/* synchronize in order to call wait */
$t->synchronized(function ($me) {
/*
* note: do not stay synchronized for longer than you must
* this is to reduce contention for the lock
* associated with the threads internal state
*/
printf("\nProcess Waiting ...\n");
$me->wait();
printf("Process Done ...\n");
}, $t);
}
echo "finished script...\n";