/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * 
 * Deliantra 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.
 * 
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 * 
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

// This file is only included with -DDEVEL, and is only part
// of the distributon for completeness, it is not supposed to
// be useful outside the developers machines.

#ifndef DEVEL_H
#define DEVEL_H

// used for benchmarking (x86/amd64-specific)
typedef unsigned int cstamp;

static inline cstamp
stamp (void)
{
  cstamp tsc;
  asm volatile ("rdtsc":"=a" (tsc)::"edx");

  return tsc;
}

static inline cstamp
measure (cstamp t)
{
  cstamp tsc;
  asm volatile ("rdtsc":"=a" (tsc)::"edx");

  if (tsc > t)
    return tsc - t;
  else
    return t - tsc;
}

// cstamp s = stamp ();
// s = measure (s);

#endif