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e9a9ae0350
This replaces macros (which typically do not work in GDB) with functions, typedefs and enums, making the code easier to debug. The functional style also makes code easier to read and maintain. * lib-src/profile.c (TV2): Remove no-longer-needed static var. * src/systime.h: Include <sys/time.h> on all hosts, not just if WINDOWSNT, since 'struct timeval' is needed in general. (EMACS_TIME): Now a typedef, not a macro. (EMACS_TIME_RESOLUTION, LOG10_EMACS_TIME_RESOLUTION): Now constants, not macros. (EMACS_SECS, EMACS_NSECS, EMACS_TIME_SIGN, EMACS_TIME_VALID_P) (EMACS_TIME_FROM_DOUBLE, EMACS_TIME_TO_DOUBLE, EMACS_TIME_EQ) (EMACS_TIME_NE, EMACS_TIME_GT, EMACS_TIME_GE, EMACS_TIME_LT) (EMACS_TIME_LE): Now functions, not macros. (EMACS_SET_SECS, EMACS_SET_NSECS, EMACS_SET_SECS_NSECS) (EMACS_SET_USECS, EMACS_SET_SECS_USECS): Remove these macros, which are not functions. All uses rewritten to use: (make_emacs_time): New function. (EMACS_SECS_ADDR, EMACS_SET_INVALID_TIME, EMACS_GET_TIME) (EMACS_ADD_TIME, EMACS_SUB_TIME): Remove these macros, which are not functions. All uses rewritten to use the following, respectively: (emacs_secs_addr, invalid_emacs_time, get_emacs_time) (add_emacs_time, sub_emacs_time): New functions. * src/atimer.c: Don't include <sys/time.h>, as "systime.h" does this. * src/fileio.c (Fcopy_file): * src/xterm.c (XTflash): Get the current time closer to when it's used. * src/makefile.w32-in ($(BLD)/atimer.$(O)): Update dependencies.
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/* profile.c --- generate periodic events for profiling of Emacs Lisp code.
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Copyright (C) 1992, 1994, 1999, 2001-2012 Free Software Foundation, Inc.
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Author: Boaz Ben-Zvi <boaz@lcs.mit.edu>
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
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/**
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** To be run as an emacs subprocess. Input string that starts with:
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** 'z' -- resets the watch (to zero).
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** 'p' -- return time (on stdout) as string with format <sec>.<micro-sec>
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** 'q' -- exit.
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**
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** abstraction : a stopwatch
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** operations: reset_watch, get_time
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*/
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#include <config.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <intprops.h>
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#include <systime.h>
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static EMACS_TIME TV1;
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static int watch_not_started = 1; /* flag */
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static char time_string[INT_STRLEN_BOUND (uintmax_t) + sizeof "."
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+ LOG10_EMACS_TIME_RESOLUTION];
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/* Reset the stopwatch to zero. */
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static void
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reset_watch (void)
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{
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TV1 = current_emacs_time ();
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watch_not_started = 0;
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}
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/* This call returns the time since the last reset_watch call. The time
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is returned as a string with the format <seconds>.<nanoseconds>
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If reset_watch was not called yet, exit. */
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static char *
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get_time (void)
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{
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EMACS_TIME TV2 = sub_emacs_time (current_emacs_time (), TV1);
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uintmax_t s = EMACS_SECS (TV2);
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int ns = EMACS_NSECS (TV2);
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if (watch_not_started)
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exit (EXIT_FAILURE); /* call reset_watch first ! */
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sprintf (time_string, "%"PRIuMAX".%0*d", s, LOG10_EMACS_TIME_RESOLUTION, ns);
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return time_string;
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}
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int
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main (void)
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{
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int c;
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while ((c = getchar ()) != EOF)
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{
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switch (c)
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{
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case 'z':
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reset_watch ();
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break;
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case 'p':
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puts (get_time ());
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break;
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case 'q':
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exit (EXIT_SUCCESS);
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}
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/* Anything remaining on the line is ignored. */
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while (c != '\n' && c != EOF)
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c = getchar ();
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}
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exit (EXIT_FAILURE);
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}
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/* profile.c ends here */
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