home *** CD-ROM | disk | FTP | other *** search
- /* Driver program for the Perfect hash function generator.
- Copyright (C) 1989 Free Software Foundation, Inc.
- written by Douglas C. Schmidt (schmidt@ics.uci.edu)
-
- This file is part of GNU GPERF.
-
- GNU GPERF 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 1, or (at your option)
- any later version.
-
- GNU GPERF 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 GPERF; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Simple driver program for the Perfect.hash function generator.
- Most of the hard work is done in class Perfect and its class methods. */
-
- #include <stdio.h>
- #include <sys/types.h>
- #include <time.h>
- #include "stderr.h"
- #include "options.h"
- #include "perfect.h"
-
- /* Calls the appropriate intialization routines for each
- ADT. Note that certain initialization routines require
- initialization *after* certain values are computed. Therefore,
- they cannot be called here. */
-
- static void
- init_all (argc, argv)
- int argc;
- char *argv[];
- {
- #ifdef RLIMIT_STACK
- /* Get rid of any avoidable limit on stack size. */
- {
- struct rlimit rlim;
-
- /* Set the stack limit huge so that alloca does not fail. */
- getrlimit (RLIMIT_STACK, &rlim);
- rlim.rlim_cur = rlim.rlim_max;
- setrlimit (RLIMIT_STACK, &rlim);
- }
- #endif /* RLIMIT_STACK */
-
- options_init (argc, argv);
- key_list_init ();
- perfect_init ();
- }
-
- /* Calls appropriate destruction routines for each ADT. These
- routines print diagnostics if the debugging option is enabled. */
-
- static void
- destroy_all ()
- {
- options_destroy ();
- key_list_destroy ();
- perfect_destroy ();
- }
-
- /* Driver for perfect hash function generation. */
-
- int
- main (argc, argv)
- int argc;
- char *argv[];
- {
- struct tm *tm;
- time_t clock;
- int status;
-
- time (&clock);
- tm = localtime (&clock);
-
- fprintf (stderr, "/* starting time is %d:%d:%d */\n", tm->tm_hour, tm->tm_min, tm->tm_sec);
- /* Sets the options. */
- init_all (argc, argv);
-
- /* Generates the perfect hash table.
- Also prints generated code neatly to the output. */
- status = perfect_generate ();
- destroy_all ();
-
- time (&clock);
- tm = localtime (&clock);
- fprintf (stderr, "/* ending time is %d:%d:%d */\n", tm->tm_hour, tm->tm_min, tm->tm_sec);
- return status;
- }
-