From nobody Tue Feb 10 12:58:05 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1517872961316541.7676575565589; Mon, 5 Feb 2018 15:22:41 -0800 (PST) Received: from localhost ([::1]:49188 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eiq5n-0004Nk-8P for importer@patchew.org; Mon, 05 Feb 2018 18:22:31 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59456) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eiptQ-000226-IV for qemu-devel@nongnu.org; Mon, 05 Feb 2018 18:09:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eiptN-0007JI-CA for qemu-devel@nongnu.org; Mon, 05 Feb 2018 18:09:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:41430) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eiptN-0007Ii-6b for qemu-devel@nongnu.org; Mon, 05 Feb 2018 18:09:41 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8DD7F6146F; Mon, 5 Feb 2018 23:09:40 +0000 (UTC) Received: from localhost (ovpn-116-12.gru2.redhat.com [10.97.116.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 326AB5D6A3; Mon, 5 Feb 2018 23:09:38 +0000 (UTC) From: Eduardo Habkost To: Peter Maydell , qemu-devel@nongnu.org Date: Mon, 5 Feb 2018 21:08:54 -0200 Message-Id: <20180205230900.11344-16-ehabkost@redhat.com> In-Reply-To: <20180205230900.11344-1-ehabkost@redhat.com> References: <20180205230900.11344-1-ehabkost@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Mon, 05 Feb 2018 23:09:40 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 15/21] qemu.py: use poll() instead of 'returncode' X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Amador Pahim , Cleber Rosa Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Amador Pahim The 'returncode' Popen attribute is not guaranteed to be updated. It actually depends on a call to either poll(), wait() or communicate(). On the other hand, poll() will: "Check if child process has terminated. Set and return returncode attribute." Let's use the poll() to check whether the process is running and to get the updated process exit code, when the process is finished. Reviewed-by: Fam Zheng eviewed-by: Eduardo Habkost Signed-off-by: Amador Pahim Message-Id: <20180122205033.24893-5-apahim@redhat.com> Signed-off-by: Eduardo Habkost --- scripts/qemu.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/qemu.py b/scripts/qemu.py index 52cf09eebd..dcb4f0ffe6 100644 --- a/scripts/qemu.py +++ b/scripts/qemu.py @@ -150,12 +150,12 @@ class QEMUMachine(object): raise =20 def is_running(self): - return self._popen is not None and self._popen.returncode is None + return self._popen is not None and self._popen.poll() is None =20 def exitcode(self): if self._popen is None: return None - return self._popen.returncode + return self._popen.poll() =20 def get_pid(self): if not self.is_running(): --=20 2.14.3