#49340 [Opn]: Signals not catcable when certain functions are in execution

From: Date: Mon, 24 Aug 2009 13:04:09 +0000
Subject: #49340 [Opn]: Signals not catcable when certain functions are in execution
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-141428@lists.php.net to get a copy of this message 
 ID:               49340
 User updated by:  alexmontoanelli at gmail dot com
 Reported By:      alexmontoanelli at gmail dot com
 Status:           Open
 Bug Type:         PCNTL related
 Operating System: Linux
 PHP Version:      5.2.10
 New Comment:

Where I say:

'There is true?',

is

'That's true?'

Regards


Previous Comments:
------------------------------------------------------------------------

[2009-08-24 11:41:59] alexmontoanelli at gmail dot com

The problem is that I need hit enter - exit from fgets - to run the
signal handler - but this is not the correct way - in python for
example, the signal handler are calling when the function are waiting
for a user input.

I found this page -
http://br2.php.net/manual/en/function.pcntl-signal.php
- the commentary
above:

'28-Mar-2006 07:26
Process handling is not available when using a blocking socket! Bear
this in mind.'

There is true?

Regards

------------------------------------------------------------------------

[2009-08-24 08:59:28] derick@php.net

Questions asked -> feedback mode

------------------------------------------------------------------------

[2009-08-24 08:54:42] sjoerd@php.net

Thank you for your bug report.

I don't fully understand the problem.

Is the problem that you have to hit enter for the signal handler to
run? Or that the line with 'echo $foo' is ran after the fgets?

------------------------------------------------------------------------

[2009-08-23 22:12:28] alexmontoanelli at gmail dot com

Description:
------------
After executions of certain functions,
the handler configured by
posix_singal, are not called where the 
funcion are in execution - like freads.

Reproduce code:
---------------
#!/usr/bin/php
<?php

declare(ticks = 1);

function handler($a){
    echo "Calling handler on signal :  $a\n";
}

//define handlers for signals
pcntl_signal(SIGTERM, 'handler');
pcntl_signal(SIGINT, 'handler');

//if you send a signal, the function fgets are waiting for a user
input, he is not called, until you enter something
$foo = fgets(STDIN);

echo $foo;


Expected result:
----------------
alexmm tmp # php a.php 
^C
Calling handler on signal :  2


Actual result:
--------------
alexmm tmp # php a.php 
^C MY_INPUT_AFTER_SEND_CTRL_C
Calling handler on signal :  2
 MY_INPUT_AFTER_SEND_CTRL_C


------------------------------------------------------------------------


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