php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #38796 Self-call __destructor from child process
Submitted: 2006-09-12 18:28 UTC Modified: 2006-09-12 20:01 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: fiw at mail dot ru Assigned:
Status: Not a bug Package: PCNTL related
PHP Version: 5.1.6 OS: FreeBSD 6.1
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: fiw at mail dot ru
New email:
PHP Version: OS:

 

 [2006-09-12 18:28 UTC] fiw at mail dot ru 
Description:
------------
No descriptions, sorry.

Reproduce code:
---------------
<?php
declare(ticks = 1);
class Daemon {
	private $threads = array();
	function __construct() {
		echo posix_getpid() . ' Daemon::construct()' . "\n";
		for ($i = 0; $i < 5; $i++) $threads[] = new Thread;
	}
	function __destruct() {
		echo posix_getpid() . ' Daemon::destruct()' . "\n";
	}
}
class Thread {
	function __construct() {
		echo posix_getpid() . ' Thread::construct()' . "\n";
		$this->pid = pcntl_fork();
		if ($this->pid == -1) throw new Exception;
		if ($this->pid) {
			pcntl_wait($status);
			return;
		}
		echo posix_getpid() . ' Thread::child()' . "\n";
		exit;
	}
	function __destruct() {
		echo posix_getpid() . ' Thread::destruct()' . "\n";
	}
}
new Daemon;
?>


Expected result:
----------------
77080 Daemon::construct()
77080 Thread::construct()
77081 Thread::child()
77081 Daemon::destruct()
77081 Thread::destruct()
77080 Thread::construct()
77082 Thread::child()
77082 Daemon::destruct()
77082 Thread::destruct()
77082 Thread::destruct()
77080 Thread::construct()
77083 Thread::child()
77083 Daemon::destruct()
77083 Thread::destruct()
77083 Thread::destruct()
77083 Thread::destruct()
77080 Thread::construct()
77084 Thread::child()
77084 Daemon::destruct()
77084 Thread::destruct()
77084 Thread::destruct()
77084 Thread::destruct()
77084 Thread::destruct()
77080 Thread::construct()
77085 Thread::child()
77085 Daemon::destruct()
77085 Thread::destruct()
77085 Thread::destruct()
77085 Thread::destruct()
77085 Thread::destruct()
77085 Thread::destruct()
77080 Thread::destruct()
77080 Thread::destruct()
77080 Thread::destruct()
77080 Thread::destruct()
77080 Thread::destruct()
77080 Daemon::destruct()


Actual result:
--------------
77080 Daemon::construct()
77080 Thread::construct()
77081 Thread::child()
77080 Thread::construct()
77082 Thread::child()
77080 Thread::construct()
77083 Thread::child()
77080 Thread::construct()
77084 Thread::child()
77080 Thread::construct()
77085 Thread::child()
77080 Thread::destruct()
77080 Thread::destruct()
77080 Thread::destruct()
77080 Thread::destruct()
77080 Thread::destruct()
77080 Daemon::destruct()

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2006-09-12 18:39 UTC] tony2001@php.net 
.
 [2006-09-12 18:49 UTC] fiw at mail dot ru 
Tony, it's real not bogus! Check it!
 [2006-09-12 19:03 UTC] fiw at mail dot ru 
I check this code on Cygwin with PHP 5.1.4 and have similar result.
 [2006-09-12 19:08 UTC] tony2001@php.net 
What do you want me to check?
Care to describe what's your problem with some more words.
 [2006-09-12 19:16 UTC] fiw at mail dot ru 
Sorry, I don't know english much well. But you can see this bug in expected result - child process call not own destructors.
 [2006-09-12 19:18 UTC] tony2001@php.net 
Feel free to use private mail and Russian.
 [2006-09-12 19:31 UTC] fiw at mail dot ru 
Ok, thanks. You can check your mailbox.
 [2006-09-12 19:38 UTC] tony2001@php.net 
fork() duplicates the parent environment, including all the variables and objects. Apparently child processes call destructors, as usual PHP processes.
No bug here.
 [2006-09-12 19:55 UTC] fiw at mail dot ru 
But why child process calls only every destructors and not calls they constructors (from any objects)?
 [2006-09-12 20:01 UTC] tony2001@php.net 
Child process is just a copy of parent process.
That's how fork() call works.
Constructors are not called, because they were called in the child process, _before_ the fork() call.
 
PHP Copyright © 2001-2024 The PHP Group
All rights reserved. 		Last updated: Sat Dec 21 17:01:58 2024 UTC