diff options
Diffstat (limited to 'lib/gethrxtime.h')
-rw-r--r-- | lib/gethrxtime.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/gethrxtime.h b/lib/gethrxtime.h new file mode 100644 index 0000000..573e600 --- /dev/null +++ b/lib/gethrxtime.h @@ -0,0 +1,58 @@ +/* gethrxtime -- get high resolution real time + + Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. */ + +/* Written by Paul Eggert. */ + +#ifndef GETHRXTIME_H_ +#define GETHRXTIME_H_ 1 + +/* This file uses _GL_INLINE_HEADER_BEGIN, _GL_INLINE, HAVE_ARITHMETIC_HRTIME_T, + HAVE_DECL_GETHRTIME. */ +#if !_GL_CONFIG_H_INCLUDED + #error "Please include config.h first." +#endif + +#include "xtime.h" + +_GL_INLINE_HEADER_BEGIN +#ifndef GETHRXTIME_INLINE +# define GETHRXTIME_INLINE _GL_INLINE +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* Get the current time, as a count of the number of nanoseconds since + an arbitrary epoch (e.g., the system boot time). Prefer a + high-resolution clock that is not subject to resetting or + drifting. */ + +#if HAVE_ARITHMETIC_HRTIME_T && HAVE_DECL_GETHRTIME +# include <time.h> +GETHRXTIME_INLINE xtime_t gethrxtime (void) { return gethrtime (); } +# else +xtime_t gethrxtime (void); +#endif + +_GL_INLINE_HEADER_END + +#ifdef __cplusplus +} +#endif + +#endif |