#23274 [Opn->Csd]: php starts using 99% of CPU when script is aborted

ID: 23274 Updated by: magnus@php.net Reported By: spagmoid at yahoo dot com -Status: Open +Status: Closed Bug Type: *General Issues Operating System: WinXP PHP Version: 4.3.1 New Comment: This bug has been fixed in CVS. In case this was a PHP problem, snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. In case this was a documentation problem, the fix will show up soon at http://www.php.net/manual/. In case this was a PHP.net website problem, the change will show up on the PHP.net site and on the mirror sites in short time. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2003-04-18 23:14:12] spagmoid at yahoo dot com OK this seems to be fixed in that snapshot. This snapshot is showing all headers at the top of every page. Is that on purpose, and is there any way to turn that on in the release versions for testing? ------------------------------------------------------------------------ [2003-04-18 16:56:15] magnus@php.net Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip ------------------------------------------------------------------------ [2003-04-18 16:48:48] spagmoid at yahoo dot com OK confirming, this has nothing to do with connection_status(), although that isn't working either. Take this code: ignore_user_abort(true); set_time_limit(0); while(connection_status()==0) { echo str_pad(" ", 3000); flush(); sleep(1); } After aborting or closing the browser, the PHP process suddenly starts using 99% CPU. It takes a few seconds to kick in, as if it's something to do with the output buffer. If you replace the while line to while(1) it does the same thing. 99% of CPU for no reason. ------------------------------------------------------------------------ [2003-04-18 15:01:40] spagmoid at yahoo dot com Using ignore_user_abort(true) and set_time_limit(0) So the only way to abort the script is: if(connection_status()!=0) die(); Well the script is using 1% of the CPU until I hit abort, then it jumps up to 99% and WILL NOT DIE. Effectively killing the server. I don't know if connection_status() is working or not, but if its not the script should just continue using 1% of the CPU. So what's the problem? ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=23274&edit=1