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58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
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/* Check that clock_gettime does not clobber errno on success.
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Copyright (C) 2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <time.h>
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#include <support/check.h>
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#include <stdio.h>
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static void
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test_clock (clockid_t clk)
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{
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printf ("info: testing clock: %d\n", (int) clk);
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for (int original_errno = 0; original_errno < 2; ++original_errno)
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{
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errno = original_errno;
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struct timespec ts;
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if (clock_gettime (clk, &ts) == 0)
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TEST_COMPARE (errno, original_errno);
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}
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}
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static int
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do_test (void)
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{
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test_clock (CLOCK_BOOTTIME);
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test_clock (CLOCK_BOOTTIME_ALARM);
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test_clock (CLOCK_MONOTONIC);
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test_clock (CLOCK_MONOTONIC_COARSE);
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test_clock (CLOCK_MONOTONIC_RAW);
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test_clock (CLOCK_PROCESS_CPUTIME_ID);
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test_clock (CLOCK_REALTIME);
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test_clock (CLOCK_REALTIME_ALARM);
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test_clock (CLOCK_REALTIME_COARSE);
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#ifdef CLOCK_TAI
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test_clock (CLOCK_TAI);
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#endif
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test_clock (CLOCK_THREAD_CPUTIME_ID);
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return 0;
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}
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#include <support/test-driver.c>
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