The Volatile class

(PECL pthreads >= 3.0.0)

Introduction

The Volatile class is new to pthreads v3. Its introduction is a consequence of the new immutability semantics of Threaded members of Threaded classes. The Volatile class enables for mutability of its Threaded members, and is also used to store PHP arrays in Threaded contexts.

Class synopsis

class Volatile extends Threaded implements Collectable, Traversable {
/* Inherited methods */
public Threaded::chunk(int $size, bool $preserve): array
public Threaded::extend(string $class): bool
public Threaded::merge(mixed $from, bool $overwrite = ?): bool
public Threaded::synchronized(Closure $block, mixed ...$args): mixed
public Threaded::wait(int $timeout = ?): bool
}

Examples

Example #1 New immutability semantics of Threaded

<?php

class Task extends Threaded
{
public function
__construct()
{
$this->data = new Threaded();

// attempt to overwrite a Threaded property of a Threaded class (invalid)
$this->data = new stdClass();
}
}

var_dump((new Task())->data);

The above example will output something similar to:

RuntimeException: Threaded members previously set to Threaded objects are immutable, cannot overwrite data in %s:%d

Example #2 Volatile use-case

<?php

class Task extends Volatile
{
public function
__construct()
{
$this->data = new Threaded();

// attempt to overwrite a Threaded property of a Volatile class (valid)
$this->data = new stdClass();
}
}

var_dump((new Task())->data);

The above example will output something similar to:

object(stdClass)#3 (0) {
}
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User Contributed Notes 1 note

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1
synnus at gmail dot com
4 years ago
<?php

// just use extends volatile for use array
// is verry good

class libvar extends Volatile
{
private
$_adresse = '127.0.0.1';
private
$_port = 10000;

public
$socket;
public
$list_socket = array();
public
$list_error = array();

public function
__construct(){ }

public function
set_list($val) { $ct = count($this->list_socket); $this->list_socket[ $ct ] = $val; return $ct; }
public function
set_socket($val) { $this->socket = $val; return $this->socket; }
public function
set_error($val) { $this->list_error[ count($this->list_error) ] = $val; }

public function
unset_list($val) { unset($this->list_error[ $val ]); }

public function
get_socketinlist($val) { return $this->list_socket[$val]; }
public function
get_adresse() { return $this->_adresse; }
public function
get_port() { return $this->_port; }
public function
get_socket() { return $this->socket; }
}

?>
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