Threaded::notify

(PECL pthreads >= 2.0.0)

Threaded::notify — Synchronization

Description

public Threaded::notify(): bool

Send notification to the referenced object

Parameters

This function has no parameters.

Return Values

Returns true on success or false on failure.

Examples

Example #1 Notifications and Waiting

<?php
class My extends Thread {
    public function run() {
        /** cause this thread to wait **/
        $this->synchronized(function($thread){
            if (!$thread->done)
                $thread->wait();
        }, $this);
    }
}
$my = new My();
$my->start();
/** send notification to the waiting thread **/
$my->synchronized(function($thread){
    $thread->done = true;
    $thread->notify();
}, $my);
var_dump($my->join());
?>

The above example will output:

bool(true)

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User Contributed Notes 1 note

down

-4

cottton at i-stats dot net ¶

10 years ago

Seems like some operators dont work.
f.e. $thread->array[] = 1;  fails

a simple test:
<?php
class My extends Thread
{
    public
        $array = array('default val 1', 'default val 2'),
        $msg = 'default',
        $stop = false;

    public function run()
    {
        while(true)
        {
            echo $this->msg . PHP_EOL;
            if(count($this->array) > 0){
                foreach($this->array as $val){
                    var_dump($val);
                }
                $this->array = array();
            }
            /** cause this thread to wait **/
            $this->synchronized(
                function($thread){
                    if(count($this->array) < 1){
                        $thread->wait();
                    }
                },
                $this
            );
            echo PHP_EOL;
            if($this->stop){
                break;
            }
        } // while
    }
}
$my = new My();
$my->start();

sleep(1); // wait a bit

// test 1 - $thread->array[] = 1;
$my->synchronized(
    function($thread){
        $thread->msg = 'test 1';
        $thread->array[] = 1;
        $thread->notify();
    },
    $my
);

sleep(1); // wait a bit

// test 2 - array_push($thread->array, 2);
$my->synchronized(
    function($thread){
        $thread->msg = 'test 2';
        array_push($thread->array, 2);
        $thread->notify();
    },
    $my
);

sleep(1); // wait a bit

// test 3 - array_push($thread->array, 2);
$my->synchronized(
    function($thread){
        $thread->msg = 'test 3';
        $new = array(3);
        $thread->array = array_merge($thread->array, $new);
        $thread->notify();
    },
    $my
);

sleep(1); // wait a bit

$my->stop = true;
?>
out:
default
string(13) "default val 1"
string(13) "default val 2"

test 1

test 2

test 3
int(3)

so in this case only array_merge() worked.

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