greenplumn CWallClock 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/common/CWallClock.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2011 EMC Corp.
/
/ @filename:
/ CWallClock.h
/
/ @doc:
/ A timer which records wall clock time;
/---------------------------------------------------------------------------
#ifndef GPOS_CWallClock_H
#define GPOS_CWallClock_H
#include "gpos/common/ITimer.h"
namespace gpos
{
/---------------------------------------------------------------------------
/ @class:
/ CWallClock
/
/ @doc:
/ Records wall clock time;
/
/---------------------------------------------------------------------------
class CWallClock : public ITimer
{
private:
/ actual timer
TIMEVAL m_time;
public:
/ ctor
CWallClock()
{
Restart();
}
/ retrieve elapsed wall-clock time in micro-seconds
ULONG ElapsedUS() const override;
/ restart timer
void Restart() override;
};
} / namespace gpos
#endif / !GPOS_CWallClock_H
/ EOF