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/* profile.c --- generate periodic events for profiling of Emacs Lisp code.
Copyright (C) 1992, 1994 Free Software Foundation, Inc.
Author: Boaz Ben-Zvi <boaz@lcs.mit.edu>
This file is part of GNU Emacs.
GNU Emacs 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, or (at your option)
any later version.
GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
the Free the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Synched up with: FSF 19.28. */
/* #### Not sure if this is needed for XEmacs. */
/**
** To be run as an emacs process. Input string that starts with:
** 'z' -- resets the watch (to zero).
** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec>
** 'q' -- exit.
**
** abstraction : a stopwatch
** operations: reset_watch, get_time
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include "../src/systime.h"
static struct timeval TV1, TV2;
static int watch_not_started = 1; /* flag */
static char time_string[30];
#ifdef WIN32_NATIVE
#include <sys/timeb.h>
/* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
void
gettimeofday (struct timeval *tv, struct timezone *tz)
{
struct _timeb tb;
_ftime (&tb);
tv->tv_sec = tb.time;
tv->tv_usec = tb.millitm * 1000L;
if (tz)
{
tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */
tz->tz_dsttime = tb.dstflag; /* type of dst correction */
}
}
#endif
/* Reset the stopwatch to zero. */
static void
reset_watch (void)
{
EMACS_GET_TIME (TV1);
watch_not_started = 0;
}
/* This call returns the time since the last reset_watch call. The time
is returned as a string with the format <seconds>.<micro-seconds>
If reset_watch was not called yet, exit. */
static char *
get_time (void)
{
if (watch_not_started)
exit (1); /* call reset_watch first ! */
EMACS_GET_TIME (TV2);
if (TV1.tv_usec > TV2.tv_usec)
{
TV2.tv_usec += 1000000;
TV2.tv_sec--;
}
sprintf (time_string, "%lu.%06lu",
(unsigned long) TV2.tv_sec - TV1.tv_sec,
(unsigned long) TV2.tv_usec - TV1.tv_usec);
return time_string;
}
int
main (int argc, char *argv[])
{
int c;
while ((c = getchar ()) != EOF)
{
switch (c)
{
case 'z':
reset_watch ();
break;
case 'p':
puts (get_time ());
break;
case 'q':
exit (0);
}
/* Anything remaining on the line is ignored. */
while (c != '\n' && c != EOF)
c = getchar ();
}
return 1;
}
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