glibc/sysdeps/unix/sysv/linux/tst-ppoll.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

72 lines
2.0 KiB
C

/* Test for ppoll timeout
Copyright (C) 2021-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <time.h>
#include <poll.h>
#include <errno.h>
#include <intprops.h>
#include <support/check.h>
#include <support/xtime.h>
#include <support/timespec.h>
#include <support/support.h>
#include <stdbool.h>
static int test_ppoll_timeout (bool zero_tmo)
{
/* We wait for half a second. */
struct timespec ts;
xclock_gettime (CLOCK_REALTIME, &ts);
struct timespec timeout = make_timespec (0, zero_tmo ? 0 : TIMESPEC_HZ/2);
ts = timespec_add (ts, timeout);
/* Ignore fds - just wait for timeout. */
struct pollfd fds = { -1, 0, 0 };
TEST_COMPARE (ppoll (&fds, 1, &timeout, 0), 0);
TEST_TIMESPEC_NOW_OR_AFTER (CLOCK_REALTIME, ts);
return 0;
}
static void
test_ppoll_large_timeout (void)
{
support_create_timer (0, 100000000, false, NULL);
struct timespec ts = { TYPE_MAXIMUM (time_t), 0 };
struct pollfd fds = { -1, 0, 0 };
TEST_COMPARE (ppoll (&fds, 1, &ts, 0), -1);
TEST_VERIFY (errno == EINTR || errno == EOVERFLOW);
}
static int
do_test (void)
{
/* Check if ppoll exits immediately. */
test_ppoll_timeout (true);
/* Check if ppoll exits after specified timeout. */
test_ppoll_timeout (false);
/* Check if ppoll with large timeout. */
test_ppoll_large_timeout ();
return 0;
}
#include <support/test-driver.c>