1 /* profile.c --- generate periodic events for profiling of Emacs Lisp code.
2 Copyright (C) 1992, 1994 Free Software Foundation, Inc.
4 Author: Boaz Ben-Zvi <boaz@lcs.mit.edu>
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* Synched up with: FSF 19.28. */
24 /* #### Not sure if this is needed for XEmacs. */
27 ** To be run as an emacs process. Input string that starts with:
28 ** 'z' -- resets the watch (to zero).
29 ** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec>
32 ** abstraction : a stopwatch
33 ** operations: reset_watch, get_time
35 #include <../src/config.h>
38 #include "../src/systime.h"
40 static struct timeval TV1, TV2;
41 static int watch_not_started = 1; /* flag */
42 static char time_string[30];
44 /* Reset the stopwatch to zero. */
50 watch_not_started = 0;
53 /* This call returns the time since the last reset_watch call. The time
54 is returned as a string with the format <seconds>.<micro-seconds>
55 If reset_watch was not called yet, exit. */
60 if (watch_not_started)
61 exit (1); /* call reset_watch first ! */
63 if (TV1.tv_usec > TV2.tv_usec)
65 TV2.tv_usec += 1000000;
68 sprintf (time_string, "%lu.%06lu",
69 (unsigned long) TV2.tv_sec - TV1.tv_sec,
70 (unsigned long) TV2.tv_usec - TV1.tv_usec);
75 main (int argc, char *argv[])
78 while ((c = getchar ()) != EOF)
91 /* Anything remaining on the line is ignored. */
92 while (c != '\n' && c != EOF)