Bug #79464 [Opn]: ZTS builds do not properly respect max_execution_time

Edit report at https://bugs.php.net/bug.php?id=79464&edit=1 ID: 79464 Updated by: nikic@php.net Reported by: maroszek at gmx dot net Summary: ZTS builds do not properly respect max_execution_time Status: Open Type: Bug Package: *General Issues Operating System: Linux, MacOS PHP Version: master-Git-2020-04-10 (Git) Block user comment: N Private report: N New Comment: On Linux the timeout functionality is based on setitimer, which is a per-process mechanism. That seems fundamentally incompatible with ZTS. A possible alternative might be to use timer_create() with SIGEV_THREAD_ID. Previous Comments: ------------------------------------------------------------------------ [2020-04-28 10:43:21] maroszek at gmx dot net Hi! Can i provide any more details to reproduce the problem? Do you have any hints on how a fix could look like? I would be willing to try to build a fix/patch if you could point me into the right direction. Thanks in advance! ------------------------------------------------------------------------ [2020-04-10 10:19:38] maroszek at gmx dot net Description: ------------ Tested against today's master. Also affects 7.x Only affects Linux and MacOS. Windows builds work fine. Please see my simple ZTS example: https://gist.github.com/paresy/3cbd4c6a469511ac7479aa0e7c42fea7 Compile: g++ php.cpp -Imain -ITSRM -IZend -I. --std=c++11 -Llibs -lphp -lresolv -ldl -pthread I used a minimal PHP build: ./configure '--disable-fpm' '--disable-cgi' '--disable-cli' '--enable-embed=static' '--enable-maintainer-zts' '--disable-all' Adding '--disable-zend-signals' does not change the result. Might correlate with this issue: https://bugs.php.net/bug.php?id=16820 Test script: --------------- <?php set_time_limit(2); for (;;) ; // Busy wait Expected result: ---------------- Fatal error: Maximum execution time of 2 seconds exceeded in /home/symcon/Downloads/php-src/test.php on line 3 FINISHED Fatal error: Maximum execution time of 2 seconds exceeded in /home/symcon/Downloads/php-src/test.php on line 3 FINISHED Fatal error: Maximum execution time of 2 seconds exceeded in /home/symcon/Downloads/php-src/test.php on line 3 FINISHED Fatal error: Maximum execution time of 2 seconds exceeded in /home/symcon/Downloads/php-src/test.php on line 3 FINISHED Fatal error: Maximum execution time of 2 seconds exceeded in /home/symcon/Downloads/php-src/test.php on line 3 FINISHED Actual result: -------------- Fatal error: Maximum execution time of 2 seconds exceeded in /home/symcon/Downloads/php-src/test.php on line 3 FINISHED (The remaining 4 threads hang indefinitely) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79464&edit=1