|
0
|
1 /* profile.c --- generate periodic events for profiling of Emacs Lisp code.
|
|
|
2 Copyright (C) 1992, 1994 Free Software Foundation, Inc.
|
|
|
3
|
|
|
4 Author: Boaz Ben-Zvi <boaz@lcs.mit.edu>
|
|
|
5
|
|
|
6 This file is part of GNU Emacs.
|
|
|
7
|
|
|
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)
|
|
|
11 any later version.
|
|
|
12
|
|
|
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.
|
|
|
17
|
|
|
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. */
|
|
|
22
|
|
|
23 /* Synched up with: FSF 19.28. */
|
|
|
24 /* #### Not sure if this is needed for XEmacs. */
|
|
|
25
|
|
|
26 /**
|
|
|
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>
|
|
|
30 ** 'q' -- exit.
|
|
|
31 **
|
|
|
32 ** abstraction : a stopwatch
|
|
|
33 ** operations: reset_watch, get_time
|
|
|
34 */
|
|
|
35 #include <stdio.h>
|
|
|
36 #if __STDC__ || defined(STDC_HEADERS)
|
|
|
37 #include <stdlib.h>
|
|
|
38 #endif
|
|
|
39 #include <config.h>
|
|
|
40 #include <../src/systime.h>
|
|
|
41
|
|
|
42 static struct timeval TV1, TV2;
|
|
|
43 static int watch_not_started = 1; /* flag */
|
|
|
44 static char time_string[30];
|
|
|
45
|
|
|
46 /* Reset the stopwatch to zero. */
|
|
|
47
|
|
|
48 static void
|
|
|
49 reset_watch (void)
|
|
|
50 {
|
|
|
51 EMACS_GET_TIME (TV1);
|
|
|
52 watch_not_started = 0;
|
|
|
53 }
|
|
|
54
|
|
|
55 /* This call returns the time since the last reset_watch call. The time
|
|
|
56 is returned as a string with the format <seconds>.<micro-seconds>
|
|
|
57 If reset_watch was not called yet, exit. */
|
|
|
58
|
|
|
59 static char *
|
|
|
60 get_time (void)
|
|
|
61 {
|
|
|
62 if (watch_not_started)
|
|
|
63 exit (1); /* call reset_watch first ! */
|
|
|
64 EMACS_GET_TIME (TV2);
|
|
|
65 if (TV1.tv_usec > TV2.tv_usec)
|
|
|
66 {
|
|
|
67 TV2.tv_usec += 1000000;
|
|
|
68 TV2.tv_sec--;
|
|
|
69 }
|
|
|
70 sprintf (time_string, "%lu.%06lu",
|
|
|
71 (unsigned long) TV2.tv_sec - TV1.tv_sec,
|
|
|
72 (unsigned long) TV2.tv_usec - TV1.tv_usec);
|
|
|
73 return time_string;
|
|
|
74 }
|
|
|
75
|
|
|
76 void
|
|
|
77 main (void)
|
|
|
78 {
|
|
|
79 int c;
|
|
|
80 while ((c = getchar ()) != EOF)
|
|
|
81 {
|
|
|
82 switch (c)
|
|
|
83 {
|
|
|
84 case 'z':
|
|
|
85 reset_watch ();
|
|
|
86 break;
|
|
|
87 case 'p':
|
|
|
88 puts (get_time ());
|
|
|
89 break;
|
|
|
90 case 'q':
|
|
|
91 exit (0);
|
|
|
92 }
|
|
|
93 /* Anything remaining on the line is ignored. */
|
|
|
94 while (c != '\n' && c != EOF)
|
|
|
95 c = getchar ();
|
|
|
96 }
|
|
|
97 exit (1);
|
|
|
98 }
|
