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+ − 1 /* profile.c --- generate periodic events for profiling of Emacs Lisp code.
+ − 2 Copyright (C) 1992, 1994 Free Software Foundation, Inc.
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+ − 3 Copyright (C) 2004 Ben Wing.
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+ − 4
+ − 5 Author: Boaz Ben-Zvi <boaz@lcs.mit.edu>
+ − 6
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+ − 7 This file is part of XEmacs.
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+ − 8
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+ − 9 XEmacs is free software; you can redistribute it and/or modify
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+ − 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
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+ − 14 XEmacs is distributed in the hope that it will be useful,
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+ − 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
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+ − 20 along with XEmacs; see the file COPYING. If not, write to
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+ − 21 the Free the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 22 Boston, MA 02111-1307, USA. */
+ − 23
+ − 24 /* Synched up with: FSF 19.28. */
+ − 25 /* #### Not sure if this is needed for XEmacs. */
+ − 26
+ − 27 /**
+ − 28 ** To be run as an emacs process. Input string that starts with:
+ − 29 ** 'z' -- resets the watch (to zero).
+ − 30 ** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec>
+ − 31 ** 'q' -- exit.
+ − 32 **
+ − 33 ** abstraction : a stopwatch
+ − 34 ** operations: reset_watch, get_time
+ − 35 */
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+ − 36 #include <config.h>
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+ − 37 #include <stdio.h>
+ − 38 #include <stdlib.h>
+ − 39 #include "../src/systime.h"
+ − 40
+ − 41 static struct timeval TV1, TV2;
+ − 42 static int watch_not_started = 1; /* flag */
+ − 43 static char time_string[30];
+ − 44
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+ − 45 #ifdef WIN32_NATIVE
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+ − 46 #include <sys/timeb.h>
+ − 47 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
+ − 48 void
+ − 49 gettimeofday (struct timeval *tv, struct timezone *tz)
+ − 50 {
+ − 51 struct _timeb tb;
+ − 52 _ftime (&tb);
+ − 53
+ − 54 tv->tv_sec = tb.time;
+ − 55 tv->tv_usec = tb.millitm * 1000L;
+ − 56 if (tz)
+ − 57 {
+ − 58 tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */
+ − 59 tz->tz_dsttime = tb.dstflag; /* type of dst correction */
+ − 60 }
+ − 61 }
+ − 62 #endif
+ − 63
+ − 64 /* Reset the stopwatch to zero. */
+ − 65
+ − 66 static void
+ − 67 reset_watch (void)
+ − 68 {
+ − 69 EMACS_GET_TIME (TV1);
+ − 70 watch_not_started = 0;
+ − 71 }
+ − 72
+ − 73 /* This call returns the time since the last reset_watch call. The time
+ − 74 is returned as a string with the format <seconds>.<micro-seconds>
+ − 75 If reset_watch was not called yet, exit. */
+ − 76
+ − 77 static char *
+ − 78 get_time (void)
+ − 79 {
+ − 80 if (watch_not_started)
+ − 81 exit (1); /* call reset_watch first ! */
+ − 82 EMACS_GET_TIME (TV2);
+ − 83 if (TV1.tv_usec > TV2.tv_usec)
+ − 84 {
+ − 85 TV2.tv_usec += 1000000;
+ − 86 TV2.tv_sec--;
+ − 87 }
+ − 88 sprintf (time_string, "%lu.%06lu",
+ − 89 (unsigned long) TV2.tv_sec - TV1.tv_sec,
+ − 90 (unsigned long) TV2.tv_usec - TV1.tv_usec);
+ − 91 return time_string;
+ − 92 }
+ − 93
+ − 94 int
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+ − 95 main (int argc, char **argv)
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+ − 96 {
+ − 97 int c;
+ − 98 while ((c = getchar ()) != EOF)
+ − 99 {
+ − 100 switch (c)
+ − 101 {
+ − 102 case 'z':
+ − 103 reset_watch ();
+ − 104 break;
+ − 105 case 'p':
+ − 106 puts (get_time ());
+ − 107 break;
+ − 108 case 'q':
+ − 109 exit (0);
+ − 110 }
+ − 111 /* Anything remaining on the line is ignored. */
+ − 112 while (c != '\n' && c != EOF)
+ − 113 c = getchar ();
+ − 114 }
+ − 115 return 1;
+ − 116 }