/* 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 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 . */ /** ** 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 . ** 'q' -- exit. ** ** abstraction : a stopwatch ** operations: reset_watch, get_time */ #include #include #include 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 . 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 */