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a156555007
The xclock_settime is a wrapper function on the clock_settime syscall to be used in the test code. It checks if the GLIBC_TEST_ALLOW_TIME_SETTING env variable is defined in the environment in which test is executed. If it is not - the test ends as unsupported. Otherwise, the clock-settime is executed and return value is assessed. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* Support functionality for using time.
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Copyright (C) 2019-2021 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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#ifndef SUPPORT_TIME_H
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#define SUPPORT_TIME_H
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#include <time.h>
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__BEGIN_DECLS
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/* Name of the env variable, which indicates if it is possible to
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adjust time on target machine. */
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#define SETTIME_ENV_NAME "GLIBC_TEST_ALLOW_TIME_SETTING"
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/* The following functions call the corresponding libc functions and
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terminate the process on error. */
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void xclock_gettime (clockid_t clock, struct timespec *ts);
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void xclock_settime (clockid_t clock, const struct timespec *ts);
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/* This helper can often simplify tests by avoiding an explicit
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variable declaration or allowing that declaration to be const. */
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static inline struct timespec xclock_now (clockid_t clock)
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{
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struct timespec ts;
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xclock_gettime (clock, &ts);
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return ts;
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}
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__END_DECLS
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#endif /* SUPPORT_TIME_H */
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