[newlib-cygwin.git] / winsup / cygwin / hires.h

/* hires.h: Definitions for hires clock calculations

   Copyright 2002 Red Hat, Inc.

This file is part of Cygwin.

This software is a copyrighted work licensed under the terms of the
Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
details. */

#ifndef __HIRES_H__
#define __HIRES_H__

#include <mmsystem.h>

class hires_base
{
 protected:
  int inited;
  virtual void prime () {}
 public:
  virtual LONGLONG usecs (bool justdelta) {return 0LL;}
  virtual ~hires_base () {}
};

class hires_us : hires_base
{
  LARGE_INTEGER primed_ft;
  LARGE_INTEGER primed_pc;
  double freq;
  void prime ();
 public:
  LONGLONG usecs (bool justdelta);
};

class hires_ms : hires_base
{
  DWORD initime_ms;
  LARGE_INTEGER initime_us;
  UINT minperiod;
  void prime ();
 public:
  LONGLONG usecs (bool justdelta);
  ~hires_ms ();
};
#endif /*__HIRES_H__*/
Commit	Line	Data
dce87b21 CF	1	/* hires.h: Definitions for hires clock calculations
	2
	3	Copyright 2002 Red Hat, Inc.
	4
	5	This file is part of Cygwin.
	6
	7	This software is a copyrighted work licensed under the terms of the
	8	Cygwin license. Please consult the file "CYGWIN_LICENSE" for
	9	details. */
	10
	11	#ifndef __HIRES_H__
	12	#define __HIRES_H__
	13
9d0efbb3 CF	14	#include <mmsystem.h>
	15
	16	class hires_base
dce87b21	17	{
9d0efbb3	18	protected:
dce87b21	19	int inited;
9d0efbb3 CF	20	virtual void prime () {}
	21	public:
	22	virtual LONGLONG usecs (bool justdelta) {return 0LL;}
	23	virtual ~hires_base () {}
	24	};
	25
	26	class hires_us : hires_base
	27	{
dce87b21 CF	28	LARGE_INTEGER primed_ft;
	29	LARGE_INTEGER primed_pc;
	30	double freq;
9d0efbb3 CF	31	void prime ();
	32	public:
	33	LONGLONG usecs (bool justdelta);
	34	};
	35
	36	class hires_ms : hires_base
	37	{
	38	DWORD initime_ms;
	39	LARGE_INTEGER initime_us;
	40	UINT minperiod;
	41	void prime ();
dce87b21	42	public:
9d0efbb3 CF	43	LONGLONG usecs (bool justdelta);
9d0efbb3 CF	44	~hires_ms ();
dce87b21 CF	45	};
dce87b21 CF	46	#endif /__HIRES_H__/