main.cc

早期freebsd实现

/* Driver program for the Gen_Perf hash function generator
   Copyright (C) 1989 Free Software Foundation, Inc.
   written by Douglas C. Schmidt ([e-mail])

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 Gen_Perf.hash function generator.
   Most of the hard work is done in class Gen_Perf and its class methods. */

#include <_G_config.h>
#include <sys/types.h>
#if defined(COUNT_TIME) || _G_HAVE_SYS_RESOURCE
#include <sys/time.h>
#endif
#ifdef COUNT_TIME
#include <time.h>
#endif

#if _G_HAVE_SYS_RESOURCE
#include <sys/resource.h>
#endif
#include <stdio.h>
#include "std-err.h"
#include "options.h"
#include "gen-perf.h"
#include "trace.h"

int
main (int argc, char *argv[])
{
  T (Trace t ("main");)

#ifdef COUNT_TIME
  struct tm *tm;
  time_t     clock; 

  time (&clock);
  tm = localtime (&clock);
  printf ("/* starting time is %d:%02d:%02d */\n", tm->tm_hour, tm->tm_min, tm->tm_sec);
#endif

#if defined(RLIMIT_STACK) && _G_HAVE_SYS_RESOURCE
  /* 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 */

  /* Sets the Options. */
  option (argc, argv);          

  /* Initializes the key word list. */
  Gen_Perf generate_table;       

  /* Generates and prints the Gen_Perf hash table.
     Don't use exit here, it skips the destructors. */
  int status = generate_table ();     

#ifdef COUNT_TIME
  time (&clock);
  tm = localtime (&clock);
  printf ("/* ending time is %d:%02d:%02d */\n", tm->tm_hour, tm->tm_min, tm->tm_sec);
#endif
  return status;
}