Commit | Line | Data |
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f9356baa | 1 | /* profile.c --- generate periodic events for profiling of Emacs Lisp code. |
92b47a4a | 2 | Copyright (C) 1992, 1994, 1999, 2002, 2003, 2004, |
273dc16a | 3 | 2005, 2006 Free Software Foundation, Inc. |
f9356baa RS |
4 | |
5 | Author: Boaz Ben-Zvi <boaz@lcs.mit.edu> | |
6 | ||
3b7ad313 EN |
7 | This file is part of GNU Emacs. |
8 | ||
9 | GNU Emacs is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU Emacs; see the file COPYING. If not, write to | |
364c38d3 LK |
21 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
f9356baa RS |
23 | |
24 | ||
25 | /** | |
26 | ** To be run as an emacs process. Input string that starts with: | |
27 | ** 'z' -- resets the watch (to zero). | |
28 | ** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec> | |
29 | ** 'q' -- exit. | |
30 | ** | |
31 | ** abstraction : a stopwatch | |
32 | ** operations: reset_watch, get_time | |
33 | */ | |
f98d41f5 | 34 | #include <config.h> |
4ee9629e | 35 | #include <stdio.h> |
f98d41f5 | 36 | #include <systime.h> |
f9356baa | 37 | |
db965a28 | 38 | static EMACS_TIME TV1, TV2; |
f9356baa RS |
39 | static int watch_not_started = 1; /* flag */ |
40 | static char time_string[30]; | |
41 | ||
42 | /* Reset the stopwatch to zero. */ | |
43 | ||
340ff9de | 44 | void |
f9356baa RS |
45 | reset_watch () |
46 | { | |
72ddb82c | 47 | EMACS_GET_TIME (TV1); |
f9356baa RS |
48 | watch_not_started = 0; |
49 | } | |
50 | ||
51 | /* This call returns the time since the last reset_watch call. The time | |
177c0ea7 | 52 | is returned as a string with the format <seconds>.<micro-seconds> |
1c1fce3f | 53 | If reset_watch was not called yet, exit. */ |
f9356baa RS |
54 | |
55 | char * | |
56 | get_time () | |
57 | { | |
f9356baa | 58 | if (watch_not_started) |
65396510 | 59 | exit (EXIT_FAILURE); /* call reset_watch first ! */ |
72ddb82c | 60 | EMACS_GET_TIME (TV2); |
db965a28 | 61 | EMACS_SUB_TIME (TV2, TV2, TV1); |
9ae17778 | 62 | sprintf (time_string, "%lu.%06lu", (unsigned long)EMACS_SECS (TV2), (unsigned long)EMACS_USECS (TV2)); |
f9356baa RS |
63 | return time_string; |
64 | } | |
65 | ||
79dbff47 | 66 | #if ! defined (HAVE_GETTIMEOFDAY) && defined (HAVE_TIMEVAL) |
80b2cbf2 | 67 | |
79dbff47 RS |
68 | /* ARGSUSED */ |
69 | gettimeofday (tp, tzp) | |
70 | struct timeval *tp; | |
71 | struct timezone *tzp; | |
72 | { | |
73 | extern long time (); | |
74 | ||
80b2cbf2 | 75 | tp->tv_sec = time ((long *)0); |
79dbff47 RS |
76 | tp->tv_usec = 0; |
77 | if (tzp != 0) | |
78 | tzp->tz_minuteswest = -1; | |
79 | } | |
80b2cbf2 | 80 | |
79dbff47 RS |
81 | #endif |
82 | \f | |
d0dff6e5 | 83 | int |
f9356baa RS |
84 | main () |
85 | { | |
1c1fce3f KH |
86 | int c; |
87 | while ((c = getchar ()) != EOF) | |
f9356baa | 88 | { |
1c1fce3f | 89 | switch (c) |
f9356baa RS |
90 | { |
91 | case 'z': | |
92 | reset_watch (); | |
93 | break; | |
94 | case 'p': | |
95 | puts (get_time ()); | |
96 | break; | |
97 | case 'q': | |
65396510 | 98 | exit (EXIT_SUCCESS); |
f9356baa | 99 | } |
1c1fce3f KH |
100 | /* Anything remaining on the line is ignored. */ |
101 | while (c != '\n' && c != EOF) | |
102 | c = getchar (); | |
f9356baa | 103 | } |
65396510 | 104 | exit (EXIT_FAILURE); |
f9356baa | 105 | } |
ab5796a9 MB |
106 | |
107 | /* arch-tag: 8db68f7e-2322-4944-a315-dba349bdbf39 | |
108 | (do not change this comment) */ | |
65396510 TTN |
109 | |
110 | /* profile.c ends here */ |