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Add a test case for pthread_cond_timedwait(3) failures reported by 

Sad Clouds in PR lib/44756. This was discussed also in:

	http://mail-index.netbsd.org/tech-userlevel/2011/03/17/msg004689.html
This commit is contained in:
jruoho 2011-03-27 16:45:15 +00:00
parent bbe1bca01a
commit 1b871e25a1
1 changed files with 63 additions and 2 deletions
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65
tests/lib/libpthread/t_cond.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: t_cond.c,v 1.2 2010/11/03 16:10:22 christos Exp $ */
/* $NetBSD: t_cond.c,v 1.3 2011/03/27 16:45:15 jruoho Exp $ */
/*
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@ -29,7 +29,7 @@
#include <sys/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_cond.c,v 1.2 2010/11/03 16:10:22 christos Exp $");
__RCSID("$NetBSD: t_cond.c,v 1.3 2011/03/27 16:45:15 jruoho Exp $");
#include <sys/time.h>
@ -305,6 +305,66 @@ ATF_TC_BODY(signal_wait_race, tc)
ATF_REQUIRE_EQ(total, 50000);
}
static void *
pthread_cond_timedwait_func(void *arg)
{
struct timespec ts;
size_t i = 0;
int rv;
for (;;) {
if (i++ >= 10000)
pthread_exit(NULL);
(void)memset(&ts, 0, sizeof(struct timespec));
ATF_REQUIRE(clock_gettime(CLOCK_REALTIME, &ts) == 0);
/*
* Set to one second in the past:
* pthread_cond_timedwait(3) should
* return ETIMEDOUT immediately.
*/
ts.tv_sec = ts.tv_sec - 1;
PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex));
rv = pthread_cond_timedwait(&static_cond, &static_mutex, &ts);
/*
* Sometimes we catch ESRCH.
* This should never happen.
*/
ATF_REQUIRE(rv == ETIMEDOUT);
PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex));
}
}
ATF_TC(cond_timedwait_race);
ATF_TC_HEAD(cond_timedwait_race, tc)
{
atf_tc_set_md_var(tc, "descr", "Test pthread_cond_timedwait(3)");
}
ATF_TC_BODY(cond_timedwait_race, tc)
{
pthread_t tid[64];
size_t i;
atf_tc_expect_fail("PR lib/44756");
for (i = 0; i < __arraycount(tid); i++) {
PTHREAD_REQUIRE(pthread_create(&tid[i], NULL,
pthread_cond_timedwait_func, NULL));
}
for (i = 0; i < __arraycount(tid); i++) {
PTHREAD_REQUIRE(pthread_join(tid[i], NULL));
}
}
static void *
broadcast_threadfunc(void *arg)
{
@ -502,6 +562,7 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, signal_before_unlock);
ATF_TP_ADD_TC(tp, signal_before_unlock_static_init);
ATF_TP_ADD_TC(tp, signal_wait_race);
ATF_TP_ADD_TC(tp, cond_timedwait_race);
ATF_TP_ADD_TC(tp, broadcast);
ATF_TP_ADD_TC(tp, bogus_timedwaits);
ATF_TP_ADD_TC(tp, destroy_after_cancel);