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1e372ded4f
This patch refactor how hp-timing is used on loader code for statistics report. The HP_TIMING_AVAIL and HP_SMALL_TIMING_AVAIL are removed and HP_TIMING_INLINE is used instead to check for hp-timing avaliability. For alpha, which only defines HP_SMALL_TIMING_AVAIL, the HP_TIMING_INLINE is set iff for IS_IN(rtld). Checked on aarch64-linux-gnu, x86_64-linux-gnu, and i686-linux-gnu. I also checked the builds for all afected ABIs. * benchtests/bench-timing.h: Replace HP_TIMING_AVAIL with HP_TIMING_INLINE. * nptl/descr.h: Likewise. * elf/rtld.c (RLTD_TIMING_DECLARE, RTLD_TIMING_NOW, RTLD_TIMING_DIFF, RTLD_TIMING_ACCUM_NT, RTLD_TIMING_SET): Define. (dl_start_final_info, _dl_start_final, dl_main, print_statistics): Abstract hp-timing usage with RTLD_* macros. * sysdeps/alpha/hp-timing.h (HP_TIMING_INLINE): Define iff IS_IN(rtld). (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Remove. * sysdeps/generic/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL, HP_TIMING_NONAVAIL): Likewise. * sysdeps/ia64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/powerpc/powerpc32/power4/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/powerpc/powerpc64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/sparc/sparc32/sparcv9/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/sparc/sparc64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/x86/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/generic/hp-timing-common.h: Update comment with HP_TIMING_AVAIL removal.
61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
/* High precision, low overhead timing functions. Generic version.
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Copyright (C) 1998-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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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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<http://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[__len - 1] = '\0'; \
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} while (0)
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