// Copyright (C) 2009,2010,2011,2012 GlavSoft LLC.
// All rights reserved.
//
//-------------------------------------------------------------------------
// This file is part of the TightVNC software.  Please visit our Web site:
//
//                       http://www.tightvnc.com/
//
// This program 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 2 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, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//-------------------------------------------------------------------------
//

#ifndef _GETCPUTIME_H_
#define _GETCPUTIME_H_

// returns current process time of work in seconds
double getCPUTime();

// returns kernel time of work in seconds
double getKernelTime();

// returns current processor tick number
inline unsigned long long rdtsc() {
  unsigned int lo, hi;
#ifdef __GNUC__   
  asm  volatile ("rdtsc\n" : "=a" (lo), "=d" (hi));
#elif _MSC_VER
#ifdef _M_IX86
  __asm
  {
    rdtsc
    mov DWORD PTR [lo], eax
    mov DWORD PTR [hi], edx
  }
#else
  return 0;
#endif
#else
  #error "Unsupported compiler"
#endif
  return ((unsigned long long)hi << 32) | lo;
}

#endif _GETCPUTIME_H_
