58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* Test of timespec_get() function.
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Copyright (C) 2021-2024 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible. */
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#include <config.h>
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#include <time.h>
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#include "signature.h"
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SIGNATURE_CHECK (timespec_get, int, (struct timespec *ts, int base));
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#include "macros.h"
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int
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main (void)
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{
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struct timespec ts1;
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time_t tt2;
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struct timespec ts3;
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time_t tt4;
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ASSERT (timespec_get (&ts1, TIME_UTC));
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tt2 = time (NULL);
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ASSERT (timespec_get (&ts3, TIME_UTC));
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tt4 = time (NULL);
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/* Verify monotonicity of timespec_get(). */
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ASSERT (ts1.tv_sec < ts3.tv_sec
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|| (ts1.tv_sec == ts3.tv_sec && ts1.tv_nsec <= ts3.tv_nsec));
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/* Verify monotonicity of time(). */
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ASSERT (tt2 <= tt4);
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/* Verify that the tv_sec field of the result is the same as time(NULL). */
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/* Note: It's here that the dependency to the 'time' module is needed.
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Without it, this assertion would sometimes fail on glibc systems, see
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https://sourceware.org/bugzilla/show_bug.cgi?id=30200 */
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ASSERT (ts1.tv_sec <= tt2);
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ASSERT (tt2 <= ts3.tv_sec);
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ASSERT (ts3.tv_sec <= tt4);
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return test_exit_status;
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}
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