581c785bf3
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
60 lines
2.4 KiB
C
60 lines
2.4 KiB
C
/* High precision, low overhead timing functions. Generic version.
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Copyright (C) 1998-2022 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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/* In case a platform supports timers in the hardware the following macros
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and types must be defined:
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- HP_TIMING_INLINE: this macro is non-zero if the functionality is not
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implemented using function calls but instead uses some inlined code
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which might simply consist of a few assembler instructions. We have to
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know this since we might want to use the macros here in places where we
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cannot make function calls.
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- hp_timing_t: This is the type for variables used to store the time
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values. This type must be integral.
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- HP_TIMING_NOW: place timestamp for current time in variable given as
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parameter.
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*/
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/* The target supports hp-timing. Share the common infrastructure. */
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#include <string.h>
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#include <sys/param.h>
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#include <_itoa.h>
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/* Compute the difference between START and END, storing into DIFF. */
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#define HP_TIMING_DIFF(Diff, Start, End) ((Diff) = (End) - (Start))
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/* Accumulate ADD into SUM. No attempt is made to be thread-safe. */
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#define HP_TIMING_ACCUM_NT(Sum, Diff) ((Sum) += (Diff))
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#define HP_TIMING_PRINT_SIZE (3 * sizeof (hp_timing_t) + 1)
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/* Write a decimal representation of the timing value into the given string. */
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#define HP_TIMING_PRINT(Dest, Len, Val) \
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do { \
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char __buf[HP_TIMING_PRINT_SIZE]; \
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char *__dest = (Dest); \
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size_t __len = (Len); \
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char *__cp = _itoa ((Val), __buf + sizeof (__buf), 10, 0); \
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size_t __cp_len = MIN (__buf + sizeof (__buf) - __cp, __len); \
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memcpy (__dest, __cp, __cp_len); \
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__dest[__cp_len - 1] = '\0'; \
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} while (0)
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