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emacs/lib-src/profile.c
Eli Zaretskii 0d23c240ea Adapt the MS-DOS build to the latest changes.
msdos/mainmake.v2 (bootstrap-clean): Do a maintainer-clean in lib, not
 bootstrap-clean (which doesn't exist).
 msdos/inttypes.h (PRIuMAX) [__DJGPP__ < 2.04]: Define to "llu".
 msdos/sedleim.inp (MKDIR_P): Edit to DOS "md" command.
 msdos/sed1v2.inp: (LIB_CLOCK_GETTIME): Edit to empty.
 Remove lines that invoke PAXCTL.
 (clean): Fix recipe not to run Unixy shell commands.
 msdos/sed2v2.inp (GETTIMEOFDAY_TIMEZONE): Edit to 'struct timezone'.
 (HAVE_STRNCASECMP): Edit to 1.
 msdos/sed3v2.inp (LIB_CLOCK_GETTIME): Edit to empty.
 (C_SWITCH_SYSTEM): Add "-I../msdos".
 msdos/sedlibmk.inp (GNULIB_GETTIMEOFDAY, GNULIB_PSELECT)
 (GNULIB_SELECT, HAVE_STRUCT_TIMEVAL, HAVE_SYS_SELECT_H)
 (HAVE_SYS_TIME_H, NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H)
 (NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H, NEXT_SYS_SELECT_H)
 (NEXT_SYS_TIME_H, REPLACE_GETTIMEOFDAY, REPLACE_PSELECT)
 (REPLACE_STRUCT_TIMEVAL): Edit to appropriate values.
 (BUILT_SOURCES): Edit out sys/select.h and sys/time.h.
 (mostlyclean-local, distclean-generic): Fix recipe not to run
 Unixy shell commands.

 src/sysselect.h [DOS_NT]: Don't include sys/select.h.
 src/s/ms-w32.h (select, pselect): Don't define here, they are
 defined in sysselect.h
 src/sysselect.h (pselect) [!HAVE_PSELECT]: Redirect to sys_select.
 src/sysdep.c: Don't include dos.h and dosfns.h.
 src/process.c (sys_select):
 src/msdos.c (sys_select): Accept one more argument and ignore it.
 src/msdos.c (event_timestamp, sys_select): Use gnulib's gettime;
 adapt data types and code to that.
 src/dosfns.c:
 src/msdos.c (gettime, settime): Define away the prototypes in dos.h,
 which clashes with the gnulib function of the same name.

 lisp/emacs-lisp/timer.el (timer-until): Subtract results of
 float-time, instead of taking float-time of the result of
 time-subtract, since float-time signals an error for negative time
 arguments.
2012-06-30 18:32:51 +03:00

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/* profile.c --- generate periodic events for profiling of Emacs Lisp code.
Copyright (C) 1992, 1994, 1999, 2001-2012 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 subprocess. 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 <inttypes.h>
#include <stdio.h>
#include <intprops.h>
#include <systime.h>
static EMACS_TIME TV1, TV2;
static int watch_not_started = 1; /* flag */
static char time_string[INT_STRLEN_BOUND (uintmax_t) + sizeof "."
+ LOG10_EMACS_TIME_RESOLUTION];
/* Reset the stopwatch to zero. */
static void
reset_watch (void)
{
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>.<nanoseconds>
If reset_watch was not called yet, exit. */
static char *
get_time (void)
{
uintmax_t s;
int ns;
if (watch_not_started)
exit (EXIT_FAILURE); /* call reset_watch first ! */
EMACS_GET_TIME (TV2);
EMACS_SUB_TIME (TV2, TV2, TV1);
s = EMACS_SECS (TV2);
ns = EMACS_NSECS (TV2);
sprintf (time_string, "%"PRIuMAX".%0*d", s, LOG10_EMACS_TIME_RESOLUTION, ns);
return time_string;
}
int
main (void)
{
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);
}
/* profile.c ends here */