Bug #71448 [Com]: declare(ticks=1) limited to scope of file makes Signal handling difficult

Edit report at https://bugs.php.net/bug.php?id=71448&edit=1 ID: 71448 Comment by: hamid dot a85 at gmail dot com Reported by: dave at atst dot io Summary: declare(ticks=1) limited to scope of file makes Signal handling difficult Status: Open Type: Bug Package: PCNTL related Operating System: Linux PHP Version: 7.0Git-2016-01-25 (Git) Block user comment: N Private report: N New Comment: We were trying to add a timeout feature to laravel artisan command queue:work. But the tests failed in PHP 7.0: Pull request: https://github.com/laravel/framework/pull/13425 A simpler test case that fails: https://github.com/halaei/ticks-bug-php-7 https://travis-ci.org/halaei/ticks-bug-php-7/builds/130244558 Code: #main.php <?php declare(ticks=1); pcntl_signal(SIGALRM, function ($sig) { die(0); }); require_once __DIR__ . '/loop.php'; #loop.php <?php pcntl_alarm(2); while (true) { sleep(10); } Expected behavior: the code terminates after 2 seconds Observed behavior: the code will never terminate. Previous Comments: ------------------------------------------------------------------------ [2016-04-25 01:19:39] nathan dot renniewaldock at gmail dot com I've noticed this too. I've got an IRC bot in PHP, I'm handling SIGINT to clean up before exiting. With declare(ticks=1] in an included file, in 5.6.20: triggered near instant in 7.0.4: can take up to 20 seconds. Near instant after moving declare to the main file. There's also no mention of this change in the migration guide. ------------------------------------------------------------------------ [2016-01-25 21:42:16] dave at atst dot io Description: ------------ Not sure if this is intended behaviour or fallout from other declare directives intending to be scoped to a particular file. The manual states: The declare construct can also be used in the global scope, affecting all code following it (however if the file with declare was included then it does not affect the parent file). I've attached a script that tries to show what I'm trying to do automatically, but you can remove the forking and just try and ctrl-c from your terminal. Test script: --------------- <?php declare(ticks=1); $start = time(); pcntl_signal(SIGINT, function() use ($start) { $diff = time() - $start; echo "SIGINT received after $diff seconds\n"; exit; }); $id = posix_getpid(); $child = pcntl_fork(); if ($child) { include 'inc.php'; } else { posix_kill($id, SIGINT); } ## inc.php <?php $a = 0; $start = time(); while(time() < $start + 5) { $a = $a + 2; # something tickable } Expected result: ---------------- SIGINT received after 0 seconds Actual result: -------------- SIGINT received after 5 seconds ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71448&edit=1