From bfbe78e6952e99e7406af3bfede277d8292eb819 Mon Sep 17 00:00:00 2001
From: weidai <weidai@57ff6487-cd31-0410-9ec3-f628ee90f5f0>
Date: Thu, 8 Apr 2004 01:23:05 +0000
Subject: add ThreadUserTimer

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@153 57ff6487-cd31-0410-9ec3-f628ee90f5f0
---
 hrtimer.h | 35 +++++++++++++++++++++++++++--------
 1 file changed, 27 insertions(+), 8 deletions(-)

(limited to 'hrtimer.h')

diff --git a/hrtimer.h b/hrtimer.h
index 1e51392..3b74b01 100644
--- a/hrtimer.h
+++ b/hrtimer.h
@@ -7,28 +7,47 @@ NAMESPACE_BEGIN(CryptoPP)
 
 #ifdef HIGHRES_TIMER_AVAILABLE
 
-//! high resolution timer
-class Timer
+class TimerBase
 {
 public:
 	enum Unit {SECONDS = 0, MILLISECONDS, MICROSECONDS, NANOSECONDS};
-	Timer(Unit unit, bool stuckAtZero = false)	: m_timerUnit(unit), m_stuckAtZero(stuckAtZero), m_started(false) {}
+	TimerBase(Unit unit, bool stuckAtZero)	: m_timerUnit(unit), m_stuckAtZero(stuckAtZero), m_started(false) {}
 
-	static word64 GetCurrentTimerValue();	// GetCurrentTime is a macro in MSVC 6.0
-	static word64 ConvertTo(word64 t, Unit unit);
-	// this is not the resolution, just a conversion factor into seconds
-	static word64 TicksPerSecond();
+	virtual word64 GetCurrentTimerValue() =0;	// GetCurrentTime is a macro in MSVC 6.0
+	virtual word64 TicksPerSecond() =0;	// this is not the resolution, just a conversion factor into seconds
 
 	void StartTimer();
-	word64 ElapsedTimeInWord64();
+	double ElapsedTimeAsDouble();
 	unsigned long ElapsedTime();
 
 private:
+	double ConvertTo(word64 t, Unit unit);
+
 	Unit m_timerUnit;	// HPUX workaround: m_unit is a system macro on HPUX
 	bool m_stuckAtZero, m_started;
 	word64 m_start;
 };
 
+//! high resolution timer
+class Timer : public TimerBase
+{
+public:
+	Timer(Unit unit = TimerBase::SECONDS, bool stuckAtZero = false)	: TimerBase(unit, stuckAtZero) {}
+	word64 GetCurrentTimerValue();
+	word64 TicksPerSecond();
+};
+
+//! measure CPU time spent executing instructions of this thread (if supported by OS)
+/*! /note This only works correctly on Windows NT or later. On Unix it reports process time, and on Windows 98 wall clock time.
+*/
+class ThreadUserTimer : public TimerBase
+{
+public:
+	ThreadUserTimer(Unit unit = TimerBase::SECONDS, bool stuckAtZero = false)	: TimerBase(unit, stuckAtZero) {}
+	word64 GetCurrentTimerValue();
+	word64 TicksPerSecond();
+};
+
 #endif
 
 NAMESPACE_END
-- 
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