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