glibc/sysdeps/generic/hp-timing.h
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

51 lines
1.6 KiB
C

/* High precision, low overhead timing functions. Generic version.
Copyright (C) 1998-2022 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/>. */
#ifndef _HP_TIMING_H
#define _HP_TIMING_H 1
#include <time.h>
#include <stdint.h>
#include <hp-timing-common.h>
/* It should not be used for ld.so. */
#define HP_TIMING_INLINE (0)
typedef uint64_t hp_timing_t;
/* The clock_gettime (CLOCK_MONOTONIC) has unspecified starting time,
nano-second accuracy, and for some architectues is implemented as
vDSO symbol. */
#ifdef _ISOMAC
# define HP_TIMING_NOW(var) \
({ \
struct timespec tv; \
clock_gettime (CLOCK_MONOTONIC, &tv); \
(var) = (tv.tv_nsec + UINT64_C(1000000000) * tv.tv_sec); \
})
#else
# define HP_TIMING_NOW(var) \
({ \
struct __timespec64 tv; \
__clock_gettime64 (CLOCK_MONOTONIC, &tv); \
(var) = (tv.tv_nsec + UINT64_C(1000000000) * tv.tv_sec); \
})
#endif
#endif /* hp-timing.h */