{"action":"created","comment":{"url":"https://api.github.com/repos/symfony/symfony/pulls/comments/48153186","id":48153186,"diff_hunk":"@@ -1206,14 +1184,21 @@ private function doSignal($signal, $throwException)\n \n                 return false;\n             }\n-        }\n-\n-        if (true !== @proc_terminate($this->process, $signal) && '\\\\' !== DIRECTORY_SEPARATOR) {\n-            if ($throwException) {\n-                throw new RuntimeException(sprintf('Error while sending signal `%s`.', $signal));\n+        } else {\n+            if (!$this->enhanceSigchildCompatibility || !$this->isSigchildEnabled()) {\n+                $ok = @proc_terminate($this->process, $signal);\n+            } elseif (function_exists('posix_kill')) {\n+                $ok = @posix_kill($this->getPid(), $signal);\n+            } elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $this->getPid()), array(2 => array('pipe', 'w')), $pipes)) {","path":"src/Symfony/Component/Process/Process.php","position":142,"original_position":142,"commit_id":"95f1dc467483eb219f91784cfcb23086d5b3d47c","original_commit_id":"95f1dc467483eb219f91784cfcb23086d5b3d47c","user":{"login":"romainneutron","id":137574,"avatar_url":"https://avatars.githubusercontent.com/u/137574?v=3","gravatar_id":"","url":"https://api.github.com/users/romainneutron","html_url":"https://github.com/romainneutron","followers_url":"https://api.github.com/users/romainneutron/followers","following_url":"https://api.github.com/users/romainneutron/following{/other_user}","gists_url":"https://api.github.com/users/romainneutron/gists{/gist_id}","starred_url":"https://api.github.com/users/romainneutron/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/romainneutron/subscriptions","organizations_url":"https://api.github.com/users/romainneutron/orgs","repos_url":"https://api.github.com/users/romainneutron/repos","events_url":"https://api.github.com/users/romainneutron/events{/privacy}","received_events_url":"https://api.github.com/users/romainneutron/received_events","type":"User","site_admin":false},"body":"what about using a synchronous call for the commandline like `exec`? When reading next line, `kill` might not have returned yet","created_at":"2015-12-21T15:01:21Z","updated_at":"2015-12-21T15:01:21Z","html_url":"https://github.com/symfony/symfony/pull/17094#discussion_r48153186","pull_request_url":"https://api.github.com/repos/symfony/symfony/pulls/17094","_links":{"self":{"href":"https://api.github.com/repos/symfony/symfony/pulls/comments/48153186"},"html":{"href":"https://github.com/symfony/symfony/pull/17094#discussion_r48153186"},"pull_request":{"href":"https://api.github.com/repos/symfony/symfony/pulls/17094"}}},"pull_request":{"url":"https://api.github.com/repos/symfony/symfony/pulls/17094","id":54263559,"html_url":"https://github.com/symfony/symfony/pull/17094","diff_url":"https://github.com/symfony/symfony/pull/17094.diff","patch_url":"https://github.com/symfony/symfony/pull/17094.patch","issue_url":"https://api.github.com/repos/symfony/symfony/issues/17094","number":17094,"state":"open","locked":false,"title":"[Process] More robustness and 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