Module Name: src
Committed By: kamil
Date: Sun Oct 30 16:17:17 UTC 2016
Modified Files:
src/distrib/sets/lists/debug: mi
src/distrib/sets/lists/tests: mi
src/tests/lib/libpthread: Makefile h_common.h t_mutex.c
Added Files:
src/tests/lib/libpthread: t_timedmutex.c
Log Message:
Add new test t_timedmutex
This test is a clone on t_mutex with additional two tests for timed-mutex
specific block.
All simple-mutex (not with the timed property according to the C11 wording)
specific tests are covered by pthread_mutex_timedlock(3) with parameter
ts_lengthy of sufficiently large tv_sec value (right now UINT16_MAX). If,
a test will hang, it won't wait UINT16_MAX seconds, but will be terminated
within the default timeout for ATF tests (right now 300 [sec] in my
NetBSD/amd64 setup).
This test was inspired by a classic selflock test failure of
pthread_mutex_timedlock(3) of the following form:
#include <assert.h>
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <time.h>
int main(int argc, char **argv)
{
pthread_mutex_t mtx;
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 1000;
printf("ts{.tv_sec = %d, .tv_nsec=%ld}\n", ts.tv_sec, ts.tv_nsec);
fflush(stdout);
printf("mtx_init\n");
assert(pthread_mutex_init(&mtx, NULL) == 0);
printf("mtx_lock\n");
assert(pthread_mutex_lock(&mtx) == 0);
printf("mtx_timedlock\n");
assert(pthread_mutex_timedlock(&mtx, &ts) == ETIMEDOUT);
printf("mtx_unlock\n");
assert(pthread_mutex_unlock(&mtx) == 0);
printf("mtx_destroy\n");
assert(pthread_mutex_destroy(&mtx) == 0);
return 0;
}
Current NetBSD implementation wrongly hangs on this test.
The issue was detected during development of the C11 portable threads.
My local tests in chroot presents that the are further issues:
t_timedmutex (21/25): 10 test cases
mutex1: [0.001142s] Failed:
/usr/src/tests/lib/libpthread/t_timedmutex.c:75: *param != 20
mutex2: [0.261499s] Passed.
mutex3: [0.261496s] Passed.
mutex4: [0.001204s] Failed:
/usr/src/tests/lib/libpthread/t_timedmutex.c:265:
pthread_mutex_timedlock(&mutex, &ts_lengthy): Connection timed out
mutex5: [0.001235s] Failed:
/usr/src/tests/lib/libpthread/t_timedmutex.c:337:
pthread_mutex_timedlock(&mutex5, &ts_lengthy): Connection timed out
mutex6: [21.218497s] Failed:
/usr/src/tests/lib/libpthread/t_timedmutex.c:512: start != 1
mutexattr1: [0.001328s] Passed.
mutexattr2: [0.001175s] Passed.
timedmutex1: [301.119397s] Failed: Test case timed out after 300 seconds
timedmutex2: [301.123081s] Failed: Test case timed out after 300 seconds
[623.990659s]
I'm also receiveing the same failure in the mutex6 test in t_mutex, so
there might be a false positives due to local chroot(8) issues.
Commit approved by <christos>.
To generate a diff of this commit:
cvs rdiff -u -r1.167 -r1.168 src/distrib/sets/lists/debug/mi
cvs rdiff -u -r1.688 -r1.689 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.11 -r1.12 src/tests/lib/libpthread/Makefile
cvs rdiff -u -r1.1 -r1.2 src/tests/lib/libpthread/h_common.h
cvs rdiff -u -r1.10 -r1.11 src/tests/lib/libpthread/t_mutex.c
cvs rdiff -u -r0 -r1.1 src/tests/lib/libpthread/t_timedmutex.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/distrib/sets/lists/debug/mi
diff -u src/distrib/sets/lists/debug/mi:1.167 src/distrib/sets/lists/debug/mi:1.168
--- src/distrib/sets/lists/debug/mi:1.167 Mon Sep 5 02:25:38 2016
+++ src/distrib/sets/lists/debug/mi Sun Oct 30 16:17:16 2016
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.167 2016/09/05 02:25:38 ozaki-r Exp $
+# $NetBSD: mi,v 1.168 2016/10/30 16:17:16 kamil Exp $
./etc/mtree/set.debug comp-sys-root
./usr/lib comp-sys-usr compatdir
./usr/lib/i18n/libBIG5_g.a comp-c-debuglib debuglib,compatfile
@@ -2159,6 +2159,7 @@
./usr/libdata/debug/usr/tests/lib/libpthread/t_sleep.debug tests-lib-tests debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libpthread/t_status.debug tests-obsolete obsolete,compattestfile
./usr/libdata/debug/usr/tests/lib/libpthread/t_swapcontext.debug tests-lib-tests debug,atf,compattestfile
+./usr/libdata/debug/usr/tests/lib/libpthread/t_timedmutex.debug tests-lib-tests debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/librt/t_sched.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/librt/t_sem.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/librumpclient/h_exec.debug tests-lib-debug debug,atf,rump
Index: src/distrib/sets/lists/tests/mi
diff -u src/distrib/sets/lists/tests/mi:1.688 src/distrib/sets/lists/tests/mi:1.689
--- src/distrib/sets/lists/tests/mi:1.688 Sat Oct 22 14:13:39 2016
+++ src/distrib/sets/lists/tests/mi Sun Oct 30 16:17:16 2016
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.688 2016/10/22 14:13:39 abhinav Exp $
+# $NetBSD: mi,v 1.689 2016/10/30 16:17:16 kamil Exp $
#
# Note: don't delete entries from here - mark them as "obsolete" instead.
#
@@ -3000,6 +3000,7 @@
./usr/tests/lib/libpthread/t_sleep tests-lib-tests compattestfile,atf
./usr/tests/lib/libpthread/t_status tests-obsolete obsolete
./usr/tests/lib/libpthread/t_swapcontext tests-lib-tests compattestfile,atf
+./usr/tests/lib/libpthread/t_timedmutex tests-lib-tests compattestfile,atf
./usr/tests/lib/librt tests-lib-tests compattestfile,atf
./usr/tests/lib/librt/Atffile tests-lib-tests compattestfile,atf
./usr/tests/lib/librt/Kyuafile tests-lib-tests compattestfile,atf,kyua
Index: src/tests/lib/libpthread/Makefile
diff -u src/tests/lib/libpthread/Makefile:1.11 src/tests/lib/libpthread/Makefile:1.12
--- src/tests/lib/libpthread/Makefile:1.11 Fri Apr 12 17:18:11 2013
+++ src/tests/lib/libpthread/Makefile Sun Oct 30 16:17:16 2016
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.11 2013/04/12 17:18:11 christos Exp $
+# $NetBSD: Makefile,v 1.12 2016/10/30 16:17:16 kamil Exp $
NOMAN= # defined
@@ -38,6 +38,7 @@ TESTS_C+= t_sigsuspend
TESTS_C+= t_siglongjmp
TESTS_C+= t_sleep
TESTS_C+= t_swapcontext
+TESTS_C+= t_timedmutex
LDADD.t_sem+= -lrt
Index: src/tests/lib/libpthread/h_common.h
diff -u src/tests/lib/libpthread/h_common.h:1.1 src/tests/lib/libpthread/h_common.h:1.2
--- src/tests/lib/libpthread/h_common.h:1.1 Fri Jul 16 15:42:53 2010
+++ src/tests/lib/libpthread/h_common.h Sun Oct 30 16:17:16 2016
@@ -9,4 +9,10 @@
ATF_REQUIRE_MSG(ret == 0, "%s: %s", #x, strerror(ret)); \
} while (0)
+#define PTHREAD_REQUIRE_STATUS(x, v) \
+ do { \
+ int ret = (x); \
+ ATF_REQUIRE_MSG(ret == (v), "%s: %s", #x, strerror(ret)); \
+ } while (0)
+
#endif // H_COMMON_H
Index: src/tests/lib/libpthread/t_mutex.c
diff -u src/tests/lib/libpthread/t_mutex.c:1.10 src/tests/lib/libpthread/t_mutex.c:1.11
--- src/tests/lib/libpthread/t_mutex.c:1.10 Sun Jul 31 13:01:29 2016
+++ src/tests/lib/libpthread/t_mutex.c Sun Oct 30 16:17:16 2016
@@ -1,4 +1,4 @@
-/* $NetBSD: t_mutex.c,v 1.10 2016/07/31 13:01:29 christos Exp $ */
+/* $NetBSD: t_mutex.c,v 1.11 2016/10/30 16:17:16 kamil Exp $ */
/*
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -26,10 +26,12 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
+/* Please sync code from this test with t_timedmutex.c */
+
#include <sys/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
-__RCSID("$NetBSD: t_mutex.c,v 1.10 2016/07/31 13:01:29 christos Exp $");
+__RCSID("$NetBSD: t_mutex.c,v 1.11 2016/10/30 16:17:16 kamil Exp $");
#include <pthread.h>
#include <stdio.h>
Added files:
Index: src/tests/lib/libpthread/t_timedmutex.c
diff -u /dev/null src/tests/lib/libpthread/t_timedmutex.c:1.1
--- /dev/null Sun Oct 30 16:17:17 2016
+++ src/tests/lib/libpthread/t_timedmutex.c Sun Oct 30 16:17:16 2016
@@ -0,0 +1,634 @@
+/* $NetBSD: t_timedmutex.c,v 1.1 2016/10/30 16:17:16 kamil Exp $ */
+
+/*
+ * Copyright (c) 2008 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+/* Please sync code from this test with t_mutex.c unless it's timed specific */
+
+#include <sys/cdefs.h>
+__COPYRIGHT("@(#) Copyright (c) 2008\
+ The NetBSD Foundation, inc. All rights reserved.");
+__RCSID("$NetBSD: t_timedmutex.c,v 1.1 2016/10/30 16:17:16 kamil Exp $");
+
+#include <pthread.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/sched.h>
+#include <sys/param.h>
+
+#include <atf-c.h>
+
+#include "h_common.h"
+
+static pthread_mutex_t mutex;
+static pthread_mutex_t static_mutex = PTHREAD_MUTEX_INITIALIZER;
+static int global_x;
+
+/* This code is used for verifying non-timed specific code */
+static struct timespec ts_lengthy = {
+ .tv_sec = UINT16_MAX,
+ .tv_nsec = 0
+};
+/* This code is used for verifying timed-only specific code */
+static struct timespec ts_shortlived = {
+ .tv_sec = 0,
+ .tv_nsec = 120
+};
+
+static void *
+mutex1_threadfunc(void *arg)
+{
+ int *param;
+
+ printf("2: Second thread.\n");
+
+ param = arg;
+ printf("2: Locking mutex\n");
+ pthread_mutex_timedlock(&mutex, &ts_lengthy);
+ printf("2: Got mutex. *param = %d\n", *param);
+ ATF_REQUIRE_EQ(*param, 20);
+ (*param)++;
+
+ pthread_mutex_unlock(&mutex);
+
+ return param;
+}
+
+ATF_TC(mutex1);
+ATF_TC_HEAD(mutex1, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Checks mutexes");
+}
+ATF_TC_BODY(mutex1, tc)
+{
+ int x;
+ pthread_t new;
+ void *joinval;
+
+ printf("1: Mutex-test 1\n");
+
+ PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));
+ x = 1;
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex1_threadfunc, &x));
+ printf("1: Before changing the value.\n");
+ sleep(2);
+ x = 20;
+ printf("1: Before releasing the mutex.\n");
+ sleep(2);
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+ printf("1: After releasing the mutex.\n");
+ PTHREAD_REQUIRE(pthread_join(new, &joinval));
+
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ printf("1: Thread joined. X was %d. Return value (int) was %d\n",
+ x, *(int *)joinval);
+ ATF_REQUIRE_EQ(x, 21);
+ ATF_REQUIRE_EQ(*(int *)joinval, 21);
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+}
+
+static void *
+mutex2_threadfunc(void *arg)
+{
+ long count = *(int *)arg;
+
+ printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count);
+
+ while (count--) {
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ global_x++;
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+ }
+
+ return (void *)count;
+}
+
+ATF_TC(mutex2);
+ATF_TC_HEAD(mutex2, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Checks mutexes");
+#if defined(__powerpc__)
+ atf_tc_set_md_var(tc, "timeout", "40");
+#endif
+}
+ATF_TC_BODY(mutex2, tc)
+{
+ int count, count2;
+ pthread_t new;
+ void *joinval;
+
+ printf("1: Mutex-test 2\n");
+
+#if defined(__powerpc__)
+ atf_tc_expect_timeout("PR port-powerpc/44387");
+#endif
+
+ PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));
+
+ global_x = 0;
+ count = count2 = 10000000;
+
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex2_threadfunc, &count2));
+
+ printf("1: Thread %p\n", pthread_self());
+
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+
+ while (count--) {
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ global_x++;
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+ }
+
+ PTHREAD_REQUIRE(pthread_join(new, &joinval));
+
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ printf("1: Thread joined. X was %d. Return value (long) was %ld\n",
+ global_x, (long)joinval);
+ ATF_REQUIRE_EQ(global_x, 20000000);
+
+#if defined(__powerpc__)
+ /* XXX force a timeout in ppc case since an un-triggered race
+ otherwise looks like a "failure" */
+ /* We sleep for longer than the timeout to make ATF not
+ complain about unexpected success */
+ sleep(41);
+#endif
+}
+
+static void *
+mutex3_threadfunc(void *arg)
+{
+ long count = *(int *)arg;
+
+ printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count);
+
+ while (count--) {
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&static_mutex, &ts_lengthy));
+ global_x++;
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex));
+ }
+
+ return (void *)count;
+}
+
+ATF_TC(mutex3);
+ATF_TC_HEAD(mutex3, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Checks mutexes using a static "
+ "initializer");
+#if defined(__powerpc__)
+ atf_tc_set_md_var(tc, "timeout", "40");
+#endif
+}
+ATF_TC_BODY(mutex3, tc)
+{
+ int count, count2;
+ pthread_t new;
+ void *joinval;
+
+ printf("1: Mutex-test 3\n");
+
+#if defined(__powerpc__)
+ atf_tc_expect_timeout("PR port-powerpc/44387");
+#endif
+
+ global_x = 0;
+ count = count2 = 10000000;
+
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&static_mutex, &ts_lengthy));
+ PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex3_threadfunc, &count2));
+
+ printf("1: Thread %p\n", pthread_self());
+
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex));
+
+ while (count--) {
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&static_mutex, &ts_lengthy));
+ global_x++;
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex));
+ }
+
+ PTHREAD_REQUIRE(pthread_join(new, &joinval));
+
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&static_mutex, &ts_lengthy));
+ printf("1: Thread joined. X was %d. Return value (long) was %ld\n",
+ global_x, (long)joinval);
+ ATF_REQUIRE_EQ(global_x, 20000000);
+
+#if defined(__powerpc__)
+ /* XXX force a timeout in ppc case since an un-triggered race
+ otherwise looks like a "failure" */
+ /* We sleep for longer than the timeout to make ATF not
+ complain about unexpected success */
+ sleep(41);
+#endif
+}
+
+static void *
+mutex4_threadfunc(void *arg)
+{
+ int *param;
+
+ printf("2: Second thread.\n");
+
+ param = arg;
+ printf("2: Locking mutex\n");
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ printf("2: Got mutex. *param = %d\n", *param);
+ (*param)++;
+
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+
+ return param;
+}
+
+ATF_TC(mutex4);
+ATF_TC_HEAD(mutex4, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Checks mutexes");
+}
+ATF_TC_BODY(mutex4, tc)
+{
+ int x;
+ pthread_t new;
+ pthread_mutexattr_t mattr;
+ void *joinval;
+
+ printf("1: Mutex-test 4\n");
+
+ PTHREAD_REQUIRE(pthread_mutexattr_init(&mattr));
+ PTHREAD_REQUIRE(pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE));
+
+ PTHREAD_REQUIRE(pthread_mutex_init(&mutex, &mattr));
+
+ PTHREAD_REQUIRE(pthread_mutexattr_destroy(&mattr));
+
+ x = 1;
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex4_threadfunc, &x));
+
+ printf("1: Before recursively acquiring the mutex.\n");
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+
+ printf("1: Before releasing the mutex once.\n");
+ sleep(2);
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+ printf("1: After releasing the mutex once.\n");
+
+ x = 20;
+
+ printf("1: Before releasing the mutex twice.\n");
+ sleep(2);
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+ printf("1: After releasing the mutex twice.\n");
+
+ PTHREAD_REQUIRE(pthread_join(new, &joinval));
+
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+ printf("1: Thread joined. X was %d. Return value (int) was %d\n",
+ x, *(int *)joinval);
+ ATF_REQUIRE_EQ(x, 21);
+ ATF_REQUIRE_EQ(*(int *)joinval, 21);
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+}
+
+static pthread_mutexattr_t attr5;
+static pthread_mutex_t mutex5;
+static int min_fifo_prio, max_fifo_prio;
+
+static void *
+child_func(void* arg)
+{
+ int res;
+
+ printf("child is waiting\n");
+ res = _sched_protect(-2);
+ ATF_REQUIRE_EQ_MSG(res, -1, "sched_protect returned %d", res);
+ ATF_REQUIRE_EQ(errno, ENOENT);
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex5, &ts_lengthy));
+ printf("child is owning resource\n");
+ res = _sched_protect(-2);
+ ATF_REQUIRE_EQ(res, max_fifo_prio);
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex5));
+ printf("child is done\n");
+
+ return 0;
+}
+
+ATF_TC(mutex5);
+ATF_TC_HEAD(mutex5, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Checks mutexes for priority setting");
+ atf_tc_set_md_var(tc, "require.user", "root");
+}
+
+ATF_TC_BODY(mutex5, tc)
+{
+ int res;
+ struct sched_param param;
+ pthread_t child;
+
+ min_fifo_prio = sched_get_priority_min(SCHED_FIFO);
+ max_fifo_prio = sched_get_priority_max(SCHED_FIFO);
+ printf("min prio for FIFO = %d\n", min_fifo_prio);
+ param.sched_priority = min_fifo_prio;
+
+ /* = 0 OTHER, 1 FIFO, 2 RR, -1 NONE */
+ res = sched_setscheduler(getpid(), SCHED_FIFO, ¶m);
+ printf("previous policy used = %d\n", res);
+
+ res = sched_getscheduler(getpid());
+ ATF_REQUIRE_EQ_MSG(res, SCHED_FIFO, "sched %d != FIFO %d", res,
+ SCHED_FIFO);
+
+ PTHREAD_REQUIRE(pthread_mutexattr_init(&attr5));
+ PTHREAD_REQUIRE(pthread_mutexattr_setprotocol(&attr5,
+ PTHREAD_PRIO_PROTECT));
+ PTHREAD_REQUIRE(pthread_mutexattr_setprioceiling(&attr5,
+ max_fifo_prio));
+
+ PTHREAD_REQUIRE(pthread_mutex_init(&mutex5, &attr5));
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex5, &ts_lengthy));
+ printf("enter critical section for main\n");
+ PTHREAD_REQUIRE(pthread_create(&child, NULL, child_func, NULL));
+ printf("main starts to sleep\n");
+ sleep(10);
+ printf("main completes\n");
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex5));
+ PTHREAD_REQUIRE(pthread_join(child, NULL));
+}
+
+static pthread_mutex_t mutex6;
+static int start = 0;
+static uintmax_t high_cnt = 0, low_cnt = 0, MAX_LOOP = 100000000;
+
+static void *
+high_prio(void* arg)
+{
+ struct sched_param param;
+ int policy;
+ param.sched_priority = min_fifo_prio + 10;
+ pthread_t childid = pthread_self();
+
+ PTHREAD_REQUIRE(pthread_setschedparam(childid, 1, ¶m));
+ PTHREAD_REQUIRE(pthread_getschedparam(childid, &policy, ¶m));
+ printf("high protect = %d, prio = %d\n",
+ _sched_protect(-2), param.sched_priority);
+ ATF_REQUIRE_EQ(policy, 1);
+ printf("high prio = %d\n", param.sched_priority);
+ sleep(1);
+ long tmp = 0;
+ for (int i = 0; i < 20; i++) {
+ while (high_cnt < MAX_LOOP) {
+ tmp += (123456789 % 1234) * (987654321 % 54321);
+ high_cnt += 1;
+ }
+ high_cnt = 0;
+ sleep(1);
+ }
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex6, &ts_lengthy));
+ if (start == 0) start = 2;
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex6));
+
+ return 0;
+}
+
+static void *
+low_prio(void* arg)
+{
+ struct sched_param param;
+ int policy;
+ param.sched_priority = min_fifo_prio;
+ pthread_t childid = pthread_self();
+ int res = _sched_protect(max_fifo_prio);
+ ATF_REQUIRE_EQ(res, 0);
+ PTHREAD_REQUIRE(pthread_setschedparam(childid, 1, ¶m));
+ PTHREAD_REQUIRE(pthread_getschedparam(childid, &policy, ¶m));
+ printf("low protect = %d, prio = %d\n", _sched_protect(-2),
+ param.sched_priority);
+ ATF_REQUIRE_EQ(policy, 1);
+ printf("low prio = %d\n", param.sched_priority);
+ sleep(1);
+ long tmp = 0;
+ for (int i = 0; i < 20; i++) {
+ while (low_cnt < MAX_LOOP) {
+ tmp += (123456789 % 1234) * (987654321 % 54321);
+ low_cnt += 1;
+ }
+ low_cnt = 0;
+ sleep(1);
+ }
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex6, &ts_lengthy));
+ if (start == 0)
+ start = 1;
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex6));
+
+ return 0;
+}
+
+ATF_TC(mutex6);
+ATF_TC_HEAD(mutex6, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Checks scheduling for priority ceiling");
+ atf_tc_set_md_var(tc, "require.user", "root");
+}
+
+/*
+ * 1. main thread sets itself to be a realtime task and launched two tasks,
+ * one has higher priority and the other has lower priority.
+ * 2. each child thread(low and high priority thread) sets its scheduler and
+ * priority.
+ * 3. each child thread did several rounds of computation, after each round it
+ * sleep 1 second.
+ * 4. the child thread with low priority will call _sched_protect to increase
+ * its protect priority.
+ * 5. We verify the thread with low priority runs first.
+ *
+ * Why does it work? From the main thread, we launched the high
+ * priority thread first. This gives this thread the benefit of
+ * starting first. The low priority thread did not call _sched_protect(2).
+ * The high priority thread should finish the task first. After each
+ * round of computation, we call sleep, to put the task into the
+ * sleep queue, and wake up again after the timer expires. This
+ * gives the scheduler the chance to decide which task to run. So,
+ * the thread with real high priority will always block the thread
+ * with real low priority.
+ *
+ */
+ATF_TC_BODY(mutex6, tc)
+{
+ struct sched_param param;
+ int res;
+ pthread_t high, low;
+
+ min_fifo_prio = sched_get_priority_min(SCHED_FIFO);
+ max_fifo_prio = sched_get_priority_max(SCHED_FIFO);
+ PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));
+ printf("min_fifo_prio = %d, max_fifo_info = %d\n", min_fifo_prio,
+ max_fifo_prio);
+
+ param.sched_priority = min_fifo_prio;
+ res = sched_setscheduler(getpid(), SCHED_FIFO, ¶m);
+ printf("previous policy used = %d\n", res);
+
+ res = sched_getscheduler(getpid());
+ ATF_REQUIRE_EQ(res, 1);
+ PTHREAD_REQUIRE(pthread_create(&high, NULL, high_prio, NULL));
+ PTHREAD_REQUIRE(pthread_create(&low, NULL, low_prio, NULL));
+ sleep(5);
+ PTHREAD_REQUIRE(pthread_join(low, NULL));
+ PTHREAD_REQUIRE(pthread_join(high, NULL));
+
+ ATF_REQUIRE_EQ(start, 1);
+}
+
+ATF_TC(mutexattr1);
+ATF_TC_HEAD(mutexattr1, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Checks mutexattr");
+}
+
+ATF_TC_BODY(mutexattr1, tc)
+{
+ pthread_mutexattr_t mattr;
+ int protocol, target;
+
+ PTHREAD_REQUIRE(pthread_mutexattr_init(&mattr));
+
+ target = PTHREAD_PRIO_NONE;
+ PTHREAD_REQUIRE(pthread_mutexattr_setprotocol(&mattr, target));
+ PTHREAD_REQUIRE(pthread_mutexattr_getprotocol(&mattr, &protocol));
+ ATF_REQUIRE_EQ(protocol, target);
+
+ /*
+ target = PTHREAD_PRIO_INHERIT;
+ PTHREAD_REQUIRE(pthread_mutexattr_setprotocol(&mattr, target));
+ PTHREAD_REQUIRE(pthread_mutexattr_getprotocol(&mattr, &protocol));
+ ATF_REQUIRE_EQ(protocol, target);
+ */
+
+ target = PTHREAD_PRIO_PROTECT;
+ PTHREAD_REQUIRE(pthread_mutexattr_setprotocol(&mattr, target));
+ PTHREAD_REQUIRE(pthread_mutexattr_getprotocol(&mattr, &protocol));
+ ATF_REQUIRE_EQ(protocol, target);
+}
+
+ATF_TC(mutexattr2);
+ATF_TC_HEAD(mutexattr2, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Checks mutexattr");
+}
+
+ATF_TC_BODY(mutexattr2, tc)
+{
+ pthread_mutexattr_t mattr;
+
+ PTHREAD_REQUIRE(pthread_mutexattr_init(&mattr));
+ int max_prio = sched_get_priority_max(SCHED_FIFO);
+ int min_prio = sched_get_priority_min(SCHED_FIFO);
+ for (int i = min_prio; i <= max_prio; i++) {
+ int prioceiling;
+ PTHREAD_REQUIRE(pthread_mutexattr_setprioceiling(&mattr, i));
+ PTHREAD_REQUIRE(pthread_mutexattr_getprioceiling(&mattr,
+ &prioceiling));
+ ATF_REQUIRE_EQ(i, prioceiling);
+ }
+}
+
+ATF_TC(timedmutex1);
+ATF_TC_HEAD(timedmutex1, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Checks timeout on selflock");
+}
+
+ATF_TC_BODY(timedmutex1, tc)
+{
+
+ printf("Timed mutex-test 1\n");
+
+ PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));
+
+ printf("Before acquiring timed-mutex\n");
+ PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
+
+ printf("Before endavor to reacquire timed-mutex (timeout expected)\n");
+ PTHREAD_REQUIRE_STATUS(pthread_mutex_timedlock(&mutex, &ts_shortlived),
+ ETIMEDOUT);
+
+ printf("Unlocking timed-mutex\n");
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+}
+
+ATF_TC(timedmutex2);
+ATF_TC_HEAD(timedmutex2, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Checks timeout on selflock with timedlock");
+}
+
+ATF_TC_BODY(timedmutex2, tc)
+{
+
+ printf("Timed mutex-test 1\n");
+
+ PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));
+
+ printf("Before acquiring timed-mutex with timedlock\n");
+ PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));
+
+ printf("Before endavor to reacquire timed-mutex (timeout expected)\n");
+ PTHREAD_REQUIRE_STATUS(pthread_mutex_timedlock(&mutex, &ts_shortlived),
+ ETIMEDOUT);
+
+ printf("Unlocking timed-mutex\n");
+ PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+ /* These tests are in sync with t_mutex */
+ ATF_TP_ADD_TC(tp, mutex1);
+ ATF_TP_ADD_TC(tp, mutex2);
+ ATF_TP_ADD_TC(tp, mutex3);
+ ATF_TP_ADD_TC(tp, mutex4);
+ ATF_TP_ADD_TC(tp, mutex5);
+ ATF_TP_ADD_TC(tp, mutex6);
+ ATF_TP_ADD_TC(tp, mutexattr1);
+ ATF_TP_ADD_TC(tp, mutexattr2);
+
+ /* These ones test timed specific code */
+ ATF_TP_ADD_TC(tp, timedmutex1);
+ ATF_TP_ADD_TC(tp, timedmutex2);
+
+ return atf_no_error();
+}
