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[src/trunk]: src Add few simple tests for getrusage(2), including heuristic f...



details:   https://anonhg.NetBSD.org/src/rev/67eb28bb3864
branches:  trunk
changeset: 763887:67eb28bb3864
user:      jruoho <jruoho%NetBSD.org@localhost>
date:      Wed Apr 06 05:53:16 2011 +0000

description:
Add few simple tests for getrusage(2), including heuristic for PR # 41734.

diffstat:

 distrib/sets/lists/tests/mi |    4 +-
 tests/syscall/Makefile      |    4 +-
 tests/syscall/t_getrusage.c |  146 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 151 insertions(+), 3 deletions(-)

diffs (191 lines):

diff -r 9cfc07781daa -r 67eb28bb3864 distrib/sets/lists/tests/mi
--- a/distrib/sets/lists/tests/mi       Wed Apr 06 05:50:39 2011 +0000
+++ b/distrib/sets/lists/tests/mi       Wed Apr 06 05:53:16 2011 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.294 2011/04/05 19:02:22 jruoho Exp $
+# $NetBSD: mi,v 1.295 2011/04/06 05:53:16 jruoho Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 #
@@ -571,6 +571,7 @@
 ./usr/libdata/debug/usr/tests/syscall/t_dup.debug                      tests-syscall-debug     debug,atf
 ./usr/libdata/debug/usr/tests/syscall/t_fsync.debug                    tests-syscall-debug     debug,atf
 ./usr/libdata/debug/usr/tests/syscall/t_getpid.debug                   tests-syscall-debug     debug,atf
+./usr/libdata/debug/usr/tests/syscall/t_getrusage.debug                        tests-syscall-debug     debug,atf
 ./usr/libdata/debug/usr/tests/syscall/t_getsid.debug                   tests-syscall-debug     debug,atf
 ./usr/libdata/debug/usr/tests/syscall/t_mmap.debug                     tests-syscall-debug     debug,atf
 ./usr/libdata/debug/usr/tests/syscall/t_mprotect.debug                 tests-syscall-debug     debug,atf
@@ -2118,6 +2119,7 @@
 ./usr/tests/syscall/t_dup                      tests-syscall-tests     atf
 ./usr/tests/syscall/t_fsync                    tests-syscall-tests     atf
 ./usr/tests/syscall/t_getpid                   tests-syscall-tests     atf
+./usr/tests/syscall/t_getrusage                        tests-syscall-tests     atf
 ./usr/tests/syscall/t_getsid                   tests-syscall-tests     atf
 ./usr/tests/syscall/t_mmap                     tests-syscall-tests     atf
 ./usr/tests/syscall/t_mprotect                 tests-syscall-tests     atf
diff -r 9cfc07781daa -r 67eb28bb3864 tests/syscall/Makefile
--- a/tests/syscall/Makefile    Wed Apr 06 05:50:39 2011 +0000
+++ b/tests/syscall/Makefile    Wed Apr 06 05:53:16 2011 +0000
@@ -1,10 +1,10 @@
-# $NetBSD: Makefile,v 1.19 2011/04/05 19:02:23 jruoho Exp $
+# $NetBSD: Makefile,v 1.20 2011/04/06 05:53:17 jruoho Exp $
 
 .include <bsd.own.mk>
 
 TESTSDIR=      ${TESTSBASE}/syscall
 
-TESTS_C+=      t_access t_cmsg t_dup t_fsync t_getpid t_getsid
+TESTS_C+=      t_access t_cmsg t_dup t_fsync t_getpid t_getrusage t_getsid
 TESTS_C+=      t_mmap t_mprotect t_setrlimit t_setuid t_timer t_umask
 
 LDADD.t_getpid+=       -lpthread
diff -r 9cfc07781daa -r 67eb28bb3864 tests/syscall/t_getrusage.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/syscall/t_getrusage.c       Wed Apr 06 05:53:16 2011 +0000
@@ -0,0 +1,146 @@
+/* $NetBSD: t_getrusage.c,v 1.1 2011/04/06 05:53:17 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_getrusage.c,v 1.1 2011/04/06 05:53:17 jruoho Exp $");
+
+#include <sys/resource.h>
+
+#include <atf-c.h>
+#include <errno.h>
+#include <limits.h>
+#include <signal.h>
+#include <string.h>
+
+static void    sighandler(int);
+
+static const int who[] = {
+       RUSAGE_SELF,
+       RUSAGE_CHILDREN
+};
+
+static void
+sighandler(int signo)
+{
+       /* Nothing. */
+}
+
+ATF_TC(getrusage_err);
+ATF_TC_HEAD(getrusage_err, tc)
+{
+       atf_tc_set_md_var(tc, "descr", "Test error conditions");
+}
+
+ATF_TC_BODY(getrusage_err, tc)
+{
+       struct rusage ru;
+       size_t i;
+
+       for (i = 0; i < __arraycount(who); i++) {
+
+               errno = 0;
+
+               ATF_REQUIRE(getrusage(INT_MAX, &ru) != 0);
+               ATF_REQUIRE(errno == EINVAL);
+
+               errno = 0;
+
+               ATF_REQUIRE(getrusage(who[i], (void *)0) != 0);
+               ATF_REQUIRE(errno == EFAULT);
+       }
+}
+
+ATF_TC(getrusage_sig);
+ATF_TC_HEAD(getrusage_sig, tc)
+{
+       atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)");
+}
+
+ATF_TC_BODY(getrusage_sig, tc)
+{
+       struct rusage ru;
+       const long n = 5;
+       int i;
+
+       /*
+        * Test that signals are recorded.
+        */
+       ATF_REQUIRE(signal(SIGUSR1, sighandler) != SIG_ERR);
+
+       for (i = 0; i < n; i++)
+               ATF_REQUIRE(raise(SIGUSR1) == 0);
+
+       (void)memset(&ru, 0, sizeof(struct rusage));
+       ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0);
+
+       if (n != ru.ru_nsignals)
+               atf_tc_fail("getrusage(2) did not record signals");
+}
+
+ATF_TC(getrusage_utime);
+ATF_TC_HEAD(getrusage_utime, tc)
+{
+       atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)");
+}
+
+ATF_TC_BODY(getrusage_utime, tc)
+{
+       size_t n = UINT16_MAX * 100;
+       struct rusage ru;
+
+       /*
+        * Test that getrusage(2) does not return
+        * zero user time for the calling process;
+        * cf. PR port-xen/41734. Note that this
+        * does not trigger always.
+        */
+       atf_tc_expect_fail("PR port-amd64/41734");
+
+       while (n > 0) {
+                asm volatile("nop");   /* Do something. */
+                n--;
+       }
+
+       (void)memset(&ru, 0, sizeof(struct rusage));
+       ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0);
+
+       if (ru.ru_utime.tv_sec == 0 && ru.ru_utime.tv_usec == 0)
+               atf_tc_fail("zero user time from getrusage(2)");
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+       ATF_TP_ADD_TC(tp, getrusage_err);
+       ATF_TP_ADD_TC(tp, getrusage_sig);
+       ATF_TP_ADD_TC(tp, getrusage_utime);
+
+       return atf_no_error();
+}



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