From: dcpiper at indiana dot edu
Operating system: Linux 2.6.13.1 (Debian Sarge)
PHP version: 4.4.0
PHP Bug Type: Unknown/Other Function
Bug description: pcntl with classes doesn't work as it should
Description:
------------
I have noticed that even though a class function can be registered as a
callback, it is not possible to set/update a class variable from within
the signal handler and get it to be set within the actual 'live' instance
of that object.
Is this a bug? It seems cumbersome to have to resort to global variables
in order to actually DO something with the signal other than print out
strings saying 'I got one!'
Reproduce code:
---------------
class SigTest {
var $myvalue;
function SignalHandler($signo) {
echo "Got signal $signo \n";
$this->myvalue = $signo;
echo "in SignalHandler:\n";
var_dump($this);
}
function SigTest() {
declare (ticks = 1);
$this->myvalue = 'some initial state';
echo "Setting signal handlers ... ";
pcntl_signal(SIGTERM, array(&$this, 'SignalHandler'));
pcntl_signal(SIGINT, array(&$this, 'SignalHandler'));
pcntl_signal(SIGHUP, array(&$this, 'SignalHandler'));
$this->something = 'This data was set after the handler was
instantiated';
echo "Done\n";
}
}
$jm = new SigTest;
sleep(2);
echo "Generating signal to self...\n";
posix_kill(posix_getpid(), SIGTERM);
echo "Main execution, looking at \$jm object:\n";
var_dump($jm);
Expected result:
----------------
Expected that 'myvalue' class variable change from within signal handler
was visible outside of that function, i.e. a change made, not reverted to
the state it was in previously before the signal was handled.
Actual result:
--------------
Setting signal handlers ... Done
Generating signal to self...
Got signal 15
in SignalHandler:
object(sigtest)(2) {
["myvalue"]=>
int(15)
["something"]=>
string(52) "This data was set after the handler was instantiated"
}
Main execution, looking at $jm object:
object(sigtest)(2) {
["myvalue"]=>
string(18) "some initial state"
["something"]=>
string(52) "This data was set after the handler was instantiated"
}
Last 'var_dump' SHOULD be the same as the first one, in my opinion.
--
Edit bug report at http://bugs.php.net/?id=34650&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=34650&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=34650&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=34650&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=34650&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=34650&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=34650&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=34650&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=34650&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=34650&r=support
Expected behavior: http://bugs.php.net/fix.php?id=34650&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=34650&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=34650&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=34650&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=34650&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=34650&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=34650&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=34650&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=34650&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=34650&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=34650&r=mysqlcfg
