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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- Profiling machinery -- not for release builds! ---*/
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/*--- vg_profile.c ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, an x86 protected-mode emulator
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designed for debugging and profiling binaries on x86-Unixes.
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Copyright (C) 2000-2002 Julian Seward
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jseward@acm.org
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Julian_Seward@muraroa.demon.co.uk
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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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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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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The GNU General Public License is contained in the file LICENSE.
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*/
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#include "vg_include.h"
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#ifdef VG_PROFILE
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/* get rid of these, if possible */
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#include <signal.h>
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#include <sys/time.h>
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#define VGP_PAIR(enumname,str) str
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static const Char* vgp_names[VGP_M_CCS] = { VGP_LIST };
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#undef VGP_PAIR
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static Int vgp_nticks;
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static Int vgp_counts[VGP_M_CCS];
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static Int vgp_entries[VGP_M_CCS];
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static Int vgp_sp;
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static VgpCC vgp_stack[VGP_M_STACK];
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void VGP_(tick) ( int sigNo )
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{
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Int cc;
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vgp_nticks++;
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cc = vgp_stack[vgp_sp];
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vg_assert(cc >= 0 && cc < VGP_M_CCS);
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vgp_counts[ cc ]++;
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}
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void VGP_(init_profiling) ( void )
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{
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struct itimerval value;
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Int i, ret;
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for (i = 0; i < VGP_M_CCS; i++)
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vgp_counts[i] = vgp_entries[i] = 0;
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vgp_nticks = 0;
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vgp_sp = -1;
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VGP_(pushcc) ( VgpRun );
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value.it_interval.tv_sec = 0;
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value.it_interval.tv_usec = 10 * 1000;
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value.it_value = value.it_interval;
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signal(SIGPROF, VGP_(tick) );
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ret = setitimer(ITIMER_PROF, &value, NULL);
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if (ret != 0) VG_(panic)("vgp_init_profiling");
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}
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void VGP_(done_profiling) ( void )
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{
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Int i;
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VG_(printf)("Profiling done, %d ticks\n", vgp_nticks);
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for (i = 0; i < VGP_M_CCS; i++)
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VG_(printf)("%2d: %4d (%3d %%%%) ticks, %8d entries for %s\n",
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i, vgp_counts[i],
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(Int)(1000.0 * (double)vgp_counts[i] / (double)vgp_nticks),
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vgp_entries[i],
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vgp_names[i] );
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}
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void VGP_(pushcc) ( VgpCC cc )
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{
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if (vgp_sp >= VGP_M_STACK-1) VG_(panic)("vgp_pushcc");
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vgp_sp++;
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vgp_stack[vgp_sp] = cc;
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vgp_entries[ cc ] ++;
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}
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void VGP_(popcc) ( void )
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{
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if (vgp_sp <= 0) VG_(panic)("vgp_popcc");
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vgp_sp--;
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}
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#endif /* VG_PROFILE */
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/*--------------------------------------------------------------------*/
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/*--- end vg_profile.c ---*/
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/*--------------------------------------------------------------------*/
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