Commit | Line | Data |
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f9356baa | 1 | /* profile.c --- generate periodic events for profiling of Emacs Lisp code. |
294981c7 GM |
2 | Copyright (C) 1992, 1994, 1999, 2001, 2002, 2003, 2004, 2005, 2006, |
3 | 2007, 2008 Free Software Foundation, Inc. | |
f9356baa | 4 | |
294981c7 | 5 | Author: Boaz Ben-Zvi <boaz@lcs.mit.edu> |
f9356baa | 6 | |
3b7ad313 EN |
7 | This file is part of GNU Emacs. |
8 | ||
294981c7 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 10 | it under the terms of the GNU General Public License as published by |
294981c7 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
3b7ad313 EN |
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 | |
294981c7 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
f9356baa RS |
21 | |
22 | ||
23 | /** | |
24 | ** To be run as an emacs process. Input string that starts with: | |
25 | ** 'z' -- resets the watch (to zero). | |
26 | ** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec> | |
27 | ** 'q' -- exit. | |
28 | ** | |
29 | ** abstraction : a stopwatch | |
30 | ** operations: reset_watch, get_time | |
31 | */ | |
f98d41f5 | 32 | #include <config.h> |
4ee9629e | 33 | #include <stdio.h> |
f98d41f5 | 34 | #include <systime.h> |
f9356baa | 35 | |
db965a28 | 36 | static EMACS_TIME TV1, TV2; |
f9356baa RS |
37 | static int watch_not_started = 1; /* flag */ |
38 | static char time_string[30]; | |
39 | ||
40 | /* Reset the stopwatch to zero. */ | |
41 | ||
340ff9de | 42 | void |
f9356baa RS |
43 | reset_watch () |
44 | { | |
72ddb82c | 45 | EMACS_GET_TIME (TV1); |
f9356baa RS |
46 | watch_not_started = 0; |
47 | } | |
48 | ||
49 | /* This call returns the time since the last reset_watch call. The time | |
177c0ea7 | 50 | is returned as a string with the format <seconds>.<micro-seconds> |
1c1fce3f | 51 | If reset_watch was not called yet, exit. */ |
f9356baa RS |
52 | |
53 | char * | |
54 | get_time () | |
55 | { | |
f9356baa | 56 | if (watch_not_started) |
65396510 | 57 | exit (EXIT_FAILURE); /* call reset_watch first ! */ |
72ddb82c | 58 | EMACS_GET_TIME (TV2); |
db965a28 | 59 | EMACS_SUB_TIME (TV2, TV2, TV1); |
9ae17778 | 60 | sprintf (time_string, "%lu.%06lu", (unsigned long)EMACS_SECS (TV2), (unsigned long)EMACS_USECS (TV2)); |
f9356baa RS |
61 | return time_string; |
62 | } | |
63 | ||
79dbff47 | 64 | #if ! defined (HAVE_GETTIMEOFDAY) && defined (HAVE_TIMEVAL) |
80b2cbf2 | 65 | |
79dbff47 RS |
66 | /* ARGSUSED */ |
67 | gettimeofday (tp, tzp) | |
68 | struct timeval *tp; | |
69 | struct timezone *tzp; | |
70 | { | |
71 | extern long time (); | |
72 | ||
80b2cbf2 | 73 | tp->tv_sec = time ((long *)0); |
79dbff47 RS |
74 | tp->tv_usec = 0; |
75 | if (tzp != 0) | |
76 | tzp->tz_minuteswest = -1; | |
77 | } | |
80b2cbf2 | 78 | |
79dbff47 RS |
79 | #endif |
80 | \f | |
d0dff6e5 | 81 | int |
f9356baa RS |
82 | main () |
83 | { | |
1c1fce3f KH |
84 | int c; |
85 | while ((c = getchar ()) != EOF) | |
f9356baa | 86 | { |
1c1fce3f | 87 | switch (c) |
f9356baa RS |
88 | { |
89 | case 'z': | |
90 | reset_watch (); | |
91 | break; | |
92 | case 'p': | |
93 | puts (get_time ()); | |
94 | break; | |
95 | case 'q': | |
65396510 | 96 | exit (EXIT_SUCCESS); |
f9356baa | 97 | } |
1c1fce3f KH |
98 | /* Anything remaining on the line is ignored. */ |
99 | while (c != '\n' && c != EOF) | |
100 | c = getchar (); | |
f9356baa | 101 | } |
65396510 | 102 | exit (EXIT_FAILURE); |
f9356baa | 103 | } |
ab5796a9 MB |
104 | |
105 | /* arch-tag: 8db68f7e-2322-4944-a315-dba349bdbf39 | |
106 | (do not change this comment) */ | |
65396510 TTN |
107 | |
108 | /* profile.c ends here */ |