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f9356baa RS |
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 | ||
3b7ad313 EN |
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 Software Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
f9356baa RS |
22 | |
23 | ||
24 | /** | |
25 | ** To be run as an emacs process. Input string that starts with: | |
26 | ** 'z' -- resets the watch (to zero). | |
27 | ** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec> | |
28 | ** 'q' -- exit. | |
29 | ** | |
30 | ** abstraction : a stopwatch | |
31 | ** operations: reset_watch, get_time | |
32 | */ | |
33 | #include <stdio.h> | |
34 | #include <../src/config.h> | |
35 | #include <../src/systime.h> | |
36 | ||
db965a28 | 37 | static EMACS_TIME TV1, TV2; |
f9356baa RS |
38 | static int watch_not_started = 1; /* flag */ |
39 | static char time_string[30]; | |
40 | ||
41 | /* Reset the stopwatch to zero. */ | |
42 | ||
340ff9de | 43 | void |
f9356baa RS |
44 | reset_watch () |
45 | { | |
72ddb82c | 46 | EMACS_GET_TIME (TV1); |
f9356baa RS |
47 | watch_not_started = 0; |
48 | } | |
49 | ||
50 | /* This call returns the time since the last reset_watch call. The time | |
51 | is returned as a string with the format <seconds>.<micro-seconds> | |
1c1fce3f | 52 | If reset_watch was not called yet, exit. */ |
f9356baa RS |
53 | |
54 | char * | |
55 | get_time () | |
56 | { | |
f9356baa | 57 | if (watch_not_started) |
1c1fce3f | 58 | exit (1); /* call reset_watch first ! */ |
72ddb82c | 59 | EMACS_GET_TIME (TV2); |
db965a28 | 60 | EMACS_SUB_TIME (TV2, TV2, TV1); |
2d1db47c | 61 | sprintf (time_string, "%lu.%06lu", EMACS_SECS (TV2), EMACS_USECS (TV2)); |
f9356baa RS |
62 | return time_string; |
63 | } | |
64 | ||
79dbff47 RS |
65 | #if ! defined (HAVE_GETTIMEOFDAY) && defined (HAVE_TIMEVAL) |
66 | ||
67 | /* ARGSUSED */ | |
68 | gettimeofday (tp, tzp) | |
69 | struct timeval *tp; | |
70 | struct timezone *tzp; | |
71 | { | |
72 | extern long time (); | |
73 | ||
74 | tp->tv_sec = time ((long *)0); | |
75 | tp->tv_usec = 0; | |
76 | if (tzp != 0) | |
77 | tzp->tz_minuteswest = -1; | |
78 | } | |
79 | ||
80 | #endif | |
81 | \f | |
f9356baa RS |
82 | void |
83 | main () | |
84 | { | |
1c1fce3f KH |
85 | int c; |
86 | while ((c = getchar ()) != EOF) | |
f9356baa | 87 | { |
1c1fce3f | 88 | switch (c) |
f9356baa RS |
89 | { |
90 | case 'z': | |
91 | reset_watch (); | |
92 | break; | |
93 | case 'p': | |
94 | puts (get_time ()); | |
95 | break; | |
96 | case 'q': | |
97 | exit (0); | |
98 | } | |
1c1fce3f KH |
99 | /* Anything remaining on the line is ignored. */ |
100 | while (c != '\n' && c != EOF) | |
101 | c = getchar (); | |
f9356baa | 102 | } |
bae98299 | 103 | exit (1); |
f9356baa | 104 | } |