From patchwork Thu Jan 14 12:02:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Majewski X-Patchwork-Id: 41718 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 642103940CFA; Thu, 14 Jan 2021 12:02:40 +0000 (GMT) X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.9]) by sourceware.org (Postfix) with ESMTPS id 4CE743858002 for ; Thu, 14 Jan 2021 12:02:37 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 4CE743858002 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: sourceware.org; spf=none smtp.mailfrom=lukma@denx.de Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4DGjcC07fmz1qs39; Thu, 14 Jan 2021 13:02:35 +0100 (CET) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4DGjcB5yhvz1tSQZ; Thu, 14 Jan 2021 13:02:34 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id bQM0PyVOIQbN; Thu, 14 Jan 2021 13:02:32 +0100 (CET) X-Auth-Info: kU1CGjUm3bAM1L8H/MTAMupd7v8yJHPE3LohGe/cfsk= Received: from localhost.localdomain (89-64-25-12.dynamic.chello.pl [89.64.25.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Thu, 14 Jan 2021 13:02:32 +0100 (CET) From: Lukasz Majewski To: Joseph Myers , Adhemerval Zanella Subject: [PATCH] tst: Provide test for ppoll Date: Thu, 14 Jan 2021 13:02:16 +0100 Message-Id: <20210114120216.12389-1-lukma@denx.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-Spam-Status: No, score=-11.2 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, KAM_SHORT, RCVD_IN_BARRACUDACENTRAL, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Florian Weimer , GNU C Library , Florian Weimer , Alistair Francis Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" This change adds new test to assess ppoll()'s timeout related functionality (the struct pollfd doesn't provide valid fd to wait for - just wait for timeout). To be more specific - two use cases are checked: - if ppoll() times out immediately when passed struct timespec has zero values of tv_nsec and tv_sec. - if ppoll() times out adfter timeout specified in passed argument --- sysdeps/unix/sysv/linux/Makefile | 2 +- sysdeps/unix/sysv/linux/tst-ppoll.c | 80 +++++++++++++++++++++++++++++ 2 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 sysdeps/unix/sysv/linux/tst-ppoll.c diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 7503b356c8..f4029a74ca 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -108,7 +108,7 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \ test-errno-linux tst-memfd_create tst-mlock2 tst-pkey \ tst-rlimit-infinity tst-ofdlocks tst-gettid tst-gettid-kill \ tst-tgkill tst-sysvsem-linux tst-sysvmsg-linux tst-sysvshm-linux \ - tst-timerfd + tst-timerfd tst-ppoll tests-internal += tst-ofdlocks-compat tst-sigcontext-get_pc CFLAGS-tst-sigcontext-get_pc.c = -fasynchronous-unwind-tables diff --git a/sysdeps/unix/sysv/linux/tst-ppoll.c b/sysdeps/unix/sysv/linux/tst-ppoll.c new file mode 100644 index 0000000000..158e3ef122 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-ppoll.c @@ -0,0 +1,80 @@ +/* Test for ppoll timeout + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +/* The ppoll() is only provided when _GNU_SOURCE is defined */ +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif +#include +#include +#include +#include + +/* Timeout in seconds for PPOLL. */ +#define PPOLL_TIMEOUT 2 +/* Timeout for test program - must be larger than PPOLL_TIMEOUT. */ +#define TIMEOUT 3 + +static int test_ppoll_timeout (int timeout) +{ + struct timespec tv0 = { 0, 0 }, tv1 = { 0, 0 }; + struct timespec tv = { 0, 0 }; + struct pollfd fds = { -1, 0, 0 }; /* Ignore fds - just wait for timeout */ + int ret; + + tv.tv_sec = timeout; + + ret = clock_gettime (CLOCK_REALTIME, &tv0); + if (ret != 0) { + printf ("*** failed to read current time: %m\n"); + return ret; + } + + ret = ppoll (&fds, 1, &tv, 0); + if (ret == 0) { + ret = clock_gettime (CLOCK_REALTIME, &tv1); + if (ret == 0) { + if (tv0.tv_sec + timeout != tv1.tv_sec) { + printf ("*** ppoll failed to timeout after %d [s]\n", timeout); + ret = -1; + } + } else { + printf ("*** failed to read current time: %m\n"); + } + } + + return ret; +} + +static int +do_test (void) +{ + int ret; + + /* Check if ppoll exits immediately */ + ret = test_ppoll_timeout (0); + if (ret != 0) + return ret; + + /* Check if ppoll exits immediately */ + ret = test_ppoll_timeout (PPOLL_TIMEOUT); + + return ret; +} + +#include