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authorJörg Frings-Fürst <debian@jff.email>2022-01-08 11:51:07 +0100
committerJörg Frings-Fürst <debian@jff.email>2022-01-08 11:51:07 +0100
commitbe8efac78d067c138ad8dda03df4336e73f94887 (patch)
tree5f5254a628ba0ef72065b93d949d1c985742ea8e /tests/test-nanosleep.c
parent7b65dbd4ebade81d504cfe5e681292a58ad1fdf0 (diff)
New upstream version 1.0upstream/1.0
Diffstat (limited to 'tests/test-nanosleep.c')
-rw-r--r--tests/test-nanosleep.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/tests/test-nanosleep.c b/tests/test-nanosleep.c
new file mode 100644
index 00000000..c03a2c2c
--- /dev/null
+++ b/tests/test-nanosleep.c
@@ -0,0 +1,83 @@
+/* Test of nanosleep() function.
+ Copyright (C) 2009-2022 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009. */
+
+#include <config.h>
+
+#include <time.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (nanosleep, int, (struct timespec const *, struct timespec *));
+
+#include <errno.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+#if HAVE_DECL_ALARM
+static void
+handle_alarm (int sig)
+{
+ if (sig != SIGALRM)
+ _exit (1);
+}
+#endif
+
+int
+main (void)
+{
+ struct timespec ts;
+
+ ts.tv_sec = 1000;
+ ts.tv_nsec = -1;
+ errno = 0;
+ ASSERT (nanosleep (&ts, NULL) == -1);
+ ASSERT (errno == EINVAL);
+ ts.tv_nsec = 1000000000;
+ errno = 0;
+ ASSERT (nanosleep (&ts, NULL) == -1);
+ ASSERT (errno == EINVAL);
+
+ ts.tv_sec = 0;
+ ts.tv_nsec = 1;
+ ASSERT (nanosleep (&ts, &ts) == 0);
+ /* Remaining time is only defined on EINTR failure; but on success,
+ it is typically either 0 or unchanged from input. At any rate,
+ it shouldn't be randomly changed to unrelated values. */
+ ASSERT (ts.tv_sec == 0);
+ ASSERT (ts.tv_nsec == 0 || ts.tv_nsec == 1);
+ ts.tv_nsec = 0;
+ ASSERT (nanosleep (&ts, NULL) == 0);
+
+#if HAVE_DECL_ALARM
+ {
+ const time_t pentecost = 50 * 24 * 60 * 60; /* 50 days. */
+ signal (SIGALRM, handle_alarm);
+ alarm (1);
+ ts.tv_sec = pentecost;
+ ts.tv_nsec = 999999999;
+ errno = 0;
+ ASSERT (nanosleep (&ts, &ts) == -1);
+ ASSERT (errno == EINTR);
+ ASSERT (pentecost - 10 < ts.tv_sec && ts.tv_sec <= pentecost);
+ ASSERT (0 <= ts.tv_nsec && ts.tv_nsec <= 999999999);
+ }
+#endif
+
+ return 0;
+}