mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-23 10:34:07 +00:00
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
/* profile.c --- generate periodic events for profiling of Emacs Lisp code.
|
||
Copyright (C) 1992, 1994, 1999, 2001, 2002, 2003, 2004, 2005, 2006,
|
||
2007, 2008 Free Software Foundation, Inc.
|
||
|
||
Author: Boaz Ben-Zvi <boaz@lcs.mit.edu>
|
||
|
||
This file is part of GNU Emacs.
|
||
|
||
GNU Emacs is free software: you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation, either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
GNU Emacs is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
|
||
/**
|
||
** To be run as an emacs process. Input string that starts with:
|
||
** 'z' -- resets the watch (to zero).
|
||
** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec>
|
||
** 'q' -- exit.
|
||
**
|
||
** abstraction : a stopwatch
|
||
** operations: reset_watch, get_time
|
||
*/
|
||
#include <config.h>
|
||
#include <stdio.h>
|
||
#include <systime.h>
|
||
|
||
static EMACS_TIME TV1, TV2;
|
||
static int watch_not_started = 1; /* flag */
|
||
static char time_string[30];
|
||
|
||
/* Reset the stopwatch to zero. */
|
||
|
||
void
|
||
reset_watch ()
|
||
{
|
||
EMACS_GET_TIME (TV1);
|
||
watch_not_started = 0;
|
||
}
|
||
|
||
/* This call returns the time since the last reset_watch call. The time
|
||
is returned as a string with the format <seconds>.<micro-seconds>
|
||
If reset_watch was not called yet, exit. */
|
||
|
||
char *
|
||
get_time ()
|
||
{
|
||
if (watch_not_started)
|
||
exit (EXIT_FAILURE); /* call reset_watch first ! */
|
||
EMACS_GET_TIME (TV2);
|
||
EMACS_SUB_TIME (TV2, TV2, TV1);
|
||
sprintf (time_string, "%lu.%06lu", (unsigned long)EMACS_SECS (TV2), (unsigned long)EMACS_USECS (TV2));
|
||
return time_string;
|
||
}
|
||
|
||
#if ! defined (HAVE_GETTIMEOFDAY) && defined (HAVE_TIMEVAL)
|
||
|
||
/* ARGSUSED */
|
||
gettimeofday (tp, tzp)
|
||
struct timeval *tp;
|
||
struct timezone *tzp;
|
||
{
|
||
extern long time ();
|
||
|
||
tp->tv_sec = time ((long *)0);
|
||
tp->tv_usec = 0;
|
||
if (tzp != 0)
|
||
tzp->tz_minuteswest = -1;
|
||
}
|
||
|
||
#endif
|
||
|
||
int
|
||
main ()
|
||
{
|
||
int c;
|
||
while ((c = getchar ()) != EOF)
|
||
{
|
||
switch (c)
|
||
{
|
||
case 'z':
|
||
reset_watch ();
|
||
break;
|
||
case 'p':
|
||
puts (get_time ());
|
||
break;
|
||
case 'q':
|
||
exit (EXIT_SUCCESS);
|
||
}
|
||
/* Anything remaining on the line is ignored. */
|
||
while (c != '\n' && c != EOF)
|
||
c = getchar ();
|
||
}
|
||
exit (EXIT_FAILURE);
|
||
}
|
||
|
||
/* arch-tag: 8db68f7e-2322-4944-a315-dba349bdbf39
|
||
(do not change this comment) */
|
||
|
||
/* profile.c ends here */
|