From patchwork Mon Mar 15 10:42:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Majewski X-Patchwork-Id: 42539 X-Patchwork-Delegate: azanella@linux.vnet.ibm.com 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 3445E3858D33; Mon, 15 Mar 2021 10:42:47 +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 D72793858D29 for ; Mon, 15 Mar 2021 10:42:43 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org D72793858D29 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 4DzY0K63Vsz1qsk3; Mon, 15 Mar 2021 11:42:41 +0100 (CET) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4DzY0K5DSgz1qqkQ; Mon, 15 Mar 2021 11:42:41 +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 mrdK4mD9d4FJ; Mon, 15 Mar 2021 11:42:40 +0100 (CET) X-Auth-Info: toEsyNT9OEYPKrn4xtyMS03Njxv2vsTyBzKAKaKlxaQ= Received: from localhost.localdomain (85-222-111-42.dynamic.chello.pl [85.222.111.42]) (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; Mon, 15 Mar 2021 11:42:39 +0100 (CET) From: Lukasz Majewski To: Joseph Myers , Adhemerval Zanella Subject: [PATCH] tst: Provide test for getrusage Date: Mon, 15 Mar 2021 11:42:23 +0100 Message-Id: <20210315104223.32542-1-lukma@denx.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-Spam-Status: No, score=-14.7 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 Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" This commit adds test to check if getrusage provides correct time accounting for some busy wait loop. To be more specific - the time is measured in a loop by wrappers from glibc's libsupport and checked if timeout has passed. Afterwards, the data from struct rusage, namely ru_stime and ru_utime is summed up and compared with time from busy waiting. --- sysdeps/unix/sysv/linux/Makefile | 2 +- sysdeps/unix/sysv/linux/tst-getrusage.c | 55 +++++++++++++++++++++++++ 2 files changed, 56 insertions(+), 1 deletion(-) create mode 100644 sysdeps/unix/sysv/linux/tst-getrusage.c diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 6a45ac820a..a93fa4ca50 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -113,7 +113,7 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \ tst-tgkill tst-sysvsem-linux tst-sysvmsg-linux tst-sysvshm-linux \ tst-timerfd tst-ppoll tst-futimens tst-utime tst-utimes \ tst-clock_adjtime tst-adjtimex tst-ntp_adjtime tst-futimes \ - tst-lutimes tst-ntp_gettime tst-ntp_gettimex + tst-lutimes tst-ntp_gettime tst-ntp_gettimex tst-getrusage tests-internal += tst-ofdlocks-compat tst-sigcontext-get_pc tests-time64 += \ tst-futimes-time64\ diff --git a/sysdeps/unix/sysv/linux/tst-getrusage.c b/sysdeps/unix/sysv/linux/tst-getrusage.c new file mode 100644 index 0000000000..068becdadb --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-getrusage.c @@ -0,0 +1,55 @@ +/* Test for getrusage + 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 + . */ + +#include +#include +#include +#include + +#define TST_GETRUSAGE_TIMEOUT 1 + +static int +do_test (void) +{ + struct timespec tv_then, tv_now, gru_u, gru_s, s, r; + struct rusage ru; + int ret; + + tv_then = xclock_now (CLOCK_REALTIME); + /* Busy wait for 1 second. */ + do + { + tv_now = xclock_now (CLOCK_REALTIME); + r = timespec_sub (tv_now, tv_then); + } while ( r.tv_sec != TST_GETRUSAGE_TIMEOUT ); + + ret = getrusage (RUSAGE_SELF, &ru); + if (ret == -1) + FAIL_EXIT1 ("getrusage failed: %m\n"); + + gru_u = make_timespec (ru.ru_utime.tv_sec, ru.ru_utime.tv_usec * 1000); + gru_s = make_timespec (ru.ru_stime.tv_sec, ru.ru_stime.tv_usec * 1000); + s = timespec_add (gru_u, gru_s); + + TEST_COMPARE (support_timespec_check_in_range + ((struct timespec) { 1, 0 }, s, 0.8, 1.2), 1); + + return 0; +} + +#include