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Verify that nanosleep(2) can suspend for one nanosecond (or longer).

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This commit is contained in:
jruoho 2011-05-02 07:02:09 +00:00
parent 87f580cf60
commit d06a811310
1 changed files with 21 additions and 7 deletions
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28
tests/syscall/t_nanosleep.c
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@ -1,4 +1,4 @@
/* $NetBSD: t_nanosleep.c,v 1.4 2011/05/01 09:44:26 jruoho Exp $ */
/* $NetBSD: t_nanosleep.c,v 1.5 2011/05/02 07:02:09 jruoho Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
@ -29,7 +29,7 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_nanosleep.c,v 1.4 2011/05/01 09:44:26 jruoho Exp $");
__RCSID("$NetBSD: t_nanosleep.c,v 1.5 2011/05/02 07:02:09 jruoho Exp $");
#include <sys/time.h>
#include <sys/wait.h>
@ -58,14 +58,14 @@ ATF_TC_HEAD(nanosleep_basic, tc)
ATF_TC_BODY(nanosleep_basic, tc)
{
static const size_t maxiter = 100;
static const size_t maxiter = 10;
struct timespec ts1, ts2, tsn;
size_t i;
for (i = 0; i < maxiter; i++) {
for (i = 1; i < maxiter; i++) {
tsn.tv_sec = 0;
tsn.tv_nsec = 1;
tsn.tv_nsec = i;
(void)memset(&ts1, 0, sizeof(struct timespec));
(void)memset(&ts2, 0, sizeof(struct timespec));
@ -74,8 +74,22 @@ ATF_TC_BODY(nanosleep_basic, tc)
ATF_REQUIRE(nanosleep(&tsn, NULL) == 0);
ATF_REQUIRE(clock_gettime(CLOCK_MONOTONIC, &ts2) == 0);
if (timespeccmp(&ts2, &ts1, <) != 0)
atf_tc_fail("inaccuracies in sleep time");
/*
* Verify that we slept at least one nanosecond.
*/
if (timespeccmp(&ts2, &ts1, <=) != 0) {
(void)fprintf(stderr,
"sleep time:: sec %lu, nsec %lu\n\t\t"
"ts1: sec %lu, nsec %lu\n\t\t"
"ts2: sec %lu, nsec %lu\n",
tsn.tv_sec, tsn.tv_nsec,
ts1.tv_sec, ts1.tv_nsec,
ts2.tv_sec, ts2.tv_nsec);
atf_tc_fail_nonfatal("inaccuracies in sleep time "
"(resolution = %lu nsec)", tsn.tv_nsec);
}
}
}