Initial revision
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/vg_profile.c b/vg_profile.c
new file mode 100644
index 0000000..ed10ede
--- /dev/null
+++ b/vg_profile.c
@@ -0,0 +1,112 @@
+
+/*--------------------------------------------------------------------*/
+/*--- Profiling machinery -- not for release builds! ---*/
+/*--- vg_profile.c ---*/
+/*--------------------------------------------------------------------*/
+
+/*
+ This file is part of Valgrind, an x86 protected-mode emulator
+ designed for debugging and profiling binaries on x86-Unixes.
+
+ Copyright (C) 2000-2002 Julian Seward
+ jseward@acm.org
+ Julian_Seward@muraroa.demon.co.uk
+
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307, USA.
+
+ The GNU General Public License is contained in the file LICENSE.
+*/
+
+#include "vg_include.h"
+
+#ifdef VG_PROFILE
+
+/* get rid of these, if possible */
+#include <signal.h>
+#include <sys/time.h>
+
+#define VGP_PAIR(enumname,str) str
+static const Char* vgp_names[VGP_M_CCS] = { VGP_LIST };
+#undef VGP_PAIR
+
+static Int vgp_nticks;
+static Int vgp_counts[VGP_M_CCS];
+static Int vgp_entries[VGP_M_CCS];
+
+static Int vgp_sp;
+static VgpCC vgp_stack[VGP_M_STACK];
+
+void VGP_(tick) ( int sigNo )
+{
+ Int cc;
+ vgp_nticks++;
+ cc = vgp_stack[vgp_sp];
+ vg_assert(cc >= 0 && cc < VGP_M_CCS);
+ vgp_counts[ cc ]++;
+}
+
+void VGP_(init_profiling) ( void )
+{
+ struct itimerval value;
+ Int i, ret;
+
+ for (i = 0; i < VGP_M_CCS; i++)
+ vgp_counts[i] = vgp_entries[i] = 0;
+
+ vgp_nticks = 0;
+ vgp_sp = -1;
+ VGP_(pushcc) ( VgpRun );
+
+ value.it_interval.tv_sec = 0;
+ value.it_interval.tv_usec = 10 * 1000;
+ value.it_value = value.it_interval;
+
+ signal(SIGPROF, VGP_(tick) );
+ ret = setitimer(ITIMER_PROF, &value, NULL);
+ if (ret != 0) VG_(panic)("vgp_init_profiling");
+}
+
+void VGP_(done_profiling) ( void )
+{
+ Int i;
+ VG_(printf)("Profiling done, %d ticks\n", vgp_nticks);
+ for (i = 0; i < VGP_M_CCS; i++)
+ VG_(printf)("%2d: %4d (%3d %%%%) ticks, %8d entries for %s\n",
+ i, vgp_counts[i],
+ (Int)(1000.0 * (double)vgp_counts[i] / (double)vgp_nticks),
+ vgp_entries[i],
+ vgp_names[i] );
+}
+
+void VGP_(pushcc) ( VgpCC cc )
+{
+ if (vgp_sp >= VGP_M_STACK-1) VG_(panic)("vgp_pushcc");
+ vgp_sp++;
+ vgp_stack[vgp_sp] = cc;
+ vgp_entries[ cc ] ++;
+}
+
+void VGP_(popcc) ( void )
+{
+ if (vgp_sp <= 0) VG_(panic)("vgp_popcc");
+ vgp_sp--;
+}
+
+#endif /* VG_PROFILE */
+
+/*--------------------------------------------------------------------*/
+/*--- end vg_profile.c ---*/
+/*--------------------------------------------------------------------*/