Commit | Line | Data |
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f9356baa | 1 | /* profile.c --- generate periodic events for profiling of Emacs Lisp code. |
73b0cd50 | 2 | Copyright (C) 1992, 1994, 1999, 2001-2011 Free Software Foundation, Inc. |
f9356baa | 3 | |
294981c7 | 4 | Author: Boaz Ben-Zvi <boaz@lcs.mit.edu> |
f9356baa | 5 | |
3b7ad313 EN |
6 | This file is part of GNU Emacs. |
7 | ||
294981c7 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 9 | it under the terms of the GNU General Public License as published by |
294981c7 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
3b7ad313 EN |
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 | |
294981c7 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
f9356baa RS |
20 | |
21 | ||
22 | /** | |
23 | ** To be run as an emacs process. Input string that starts with: | |
24 | ** 'z' -- resets the watch (to zero). | |
25 | ** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec> | |
26 | ** 'q' -- exit. | |
27 | ** | |
28 | ** abstraction : a stopwatch | |
29 | ** operations: reset_watch, get_time | |
30 | */ | |
f98d41f5 | 31 | #include <config.h> |
4ee9629e | 32 | #include <stdio.h> |
f98d41f5 | 33 | #include <systime.h> |
f9356baa | 34 | |
db965a28 | 35 | static EMACS_TIME TV1, TV2; |
f9356baa RS |
36 | static int watch_not_started = 1; /* flag */ |
37 | static char time_string[30]; | |
38 | ||
39 | /* Reset the stopwatch to zero. */ | |
40 | ||
b23b5a5b | 41 | static void |
873fbd0b | 42 | reset_watch (void) |
f9356baa | 43 | { |
72ddb82c | 44 | EMACS_GET_TIME (TV1); |
f9356baa RS |
45 | watch_not_started = 0; |
46 | } | |
47 | ||
48 | /* This call returns the time since the last reset_watch call. The time | |
177c0ea7 | 49 | is returned as a string with the format <seconds>.<micro-seconds> |
1c1fce3f | 50 | If reset_watch was not called yet, exit. */ |
f9356baa | 51 | |
b23b5a5b | 52 | static char * |
873fbd0b | 53 | get_time (void) |
f9356baa | 54 | { |
f9356baa | 55 | if (watch_not_started) |
65396510 | 56 | exit (EXIT_FAILURE); /* call reset_watch first ! */ |
72ddb82c | 57 | EMACS_GET_TIME (TV2); |
db965a28 | 58 | EMACS_SUB_TIME (TV2, TV2, TV1); |
9ae17778 | 59 | sprintf (time_string, "%lu.%06lu", (unsigned long)EMACS_SECS (TV2), (unsigned long)EMACS_USECS (TV2)); |
f9356baa RS |
60 | return time_string; |
61 | } | |
62 | ||
79dbff47 | 63 | #if ! defined (HAVE_GETTIMEOFDAY) && defined (HAVE_TIMEVAL) |
80b2cbf2 | 64 | |
79dbff47 RS |
65 | /* ARGSUSED */ |
66 | gettimeofday (tp, tzp) | |
67 | struct timeval *tp; | |
68 | struct timezone *tzp; | |
69 | { | |
70 | extern long time (); | |
71 | ||
80b2cbf2 | 72 | tp->tv_sec = time ((long *)0); |
79dbff47 RS |
73 | tp->tv_usec = 0; |
74 | if (tzp != 0) | |
75 | tzp->tz_minuteswest = -1; | |
76 | } | |
80b2cbf2 | 77 | |
79dbff47 RS |
78 | #endif |
79 | \f | |
d0dff6e5 | 80 | int |
873fbd0b | 81 | main (void) |
f9356baa | 82 | { |
1c1fce3f KH |
83 | int c; |
84 | while ((c = getchar ()) != EOF) | |
f9356baa | 85 | { |
1c1fce3f | 86 | switch (c) |
f9356baa RS |
87 | { |
88 | case 'z': | |
89 | reset_watch (); | |
90 | break; | |
91 | case 'p': | |
92 | puts (get_time ()); | |
93 | break; | |
94 | case 'q': | |
65396510 | 95 | exit (EXIT_SUCCESS); |
f9356baa | 96 | } |
1c1fce3f KH |
97 | /* Anything remaining on the line is ignored. */ |
98 | while (c != '\n' && c != EOF) | |
99 | c = getchar (); | |
f9356baa | 100 | } |
65396510 | 101 | exit (EXIT_FAILURE); |
f9356baa | 102 | } |
ab5796a9 | 103 | |
65396510 TTN |
104 | |
105 | /* profile.c ends here */ |