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/* Check that clock_gettime does not clobber errno on success.
Copyright (C) 2021-2024 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 <errno.h>
#include <time.h>
#include <support/check.h>
#include <stdio.h>
static void
test_clock (clockid_t clk)
{
printf ("info: testing clock: %d\n", (int) clk);
for (int original_errno = 0; original_errno < 2; ++original_errno)
{
errno = original_errno;
struct timespec ts;
if (clock_gettime (clk, &ts) == 0)
TEST_COMPARE (errno, original_errno);
}
}
static int
do_test (void)
{
test_clock (CLOCK_BOOTTIME);
test_clock (CLOCK_BOOTTIME_ALARM);
test_clock (CLOCK_MONOTONIC);
test_clock (CLOCK_MONOTONIC_COARSE);
test_clock (CLOCK_MONOTONIC_RAW);
test_clock (CLOCK_PROCESS_CPUTIME_ID);
test_clock (CLOCK_REALTIME);
test_clock (CLOCK_REALTIME_ALARM);
test_clock (CLOCK_REALTIME_COARSE);
#ifdef CLOCK_TAI
test_clock (CLOCK_TAI);
#endif
test_clock (CLOCK_THREAD_CPUTIME_ID);
return 0;
}
#include <support/test-driver.c>
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