platform.h

   1 /***************************************************************************
   2                  platform.h  -  Platoform dependent utilities
   3                              -------------------
   4     begin                : Fri Sep 28 2007
   5     copyright            : (C) 2007 by Maurizio Monge
   6     email                : monge@linuz.sns.it
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #ifndef __PLATFORM_H__
  19 #define __PLATFORM_H__
  20
  21 #include <stdio.h>
  22 #include <inttypes.h>
  23
  24 /* map and unmap a file in memory. */
  25 void *map_file(const char *file_name, uint32_t* size);
  26 void unmap_file(void*addr, uint32_t size);
  27
  28 /* return the current time in centiseconds */
  29 int current_time();
  30
  31 /* Initialize some information about stdin */
  32 void init_stdin();
  33
  34 /* return if there is input available */
  35 bool input_available();
  36
  37 /* execute and initialize another xboard engine (only for testing) */
  38 bool start_engine(const char *prog, FILE **in, FILE **out);
  39
  40 /* get the cycle counter (only for profiling) */
  41 inline uint64_t rdtsc()
  42 {
  43     uint64_t r;
  44     asm volatile ("rdtsc\n\t" : "=A" (r));
  45     return r;
  46 }
  47
  48 #endif //__PLATFORM_H__