DummyIteratorProfiler Class Reference

This is a no-op class with a public interface identical to that of the IteratorProfilerImpl class. More...

Inheritance diagram for DummyIteratorProfiler:

Classes
struct	TimeStamp

Public Member Functions
double	GetFirstRowMs () const override
	Time (in ms) spent fetching the first row. More...
double	GetLastRowMs () const override
	Time (in ms) spent fetching the remaining rows. More...
uint64_t	GetNumInitCalls () const override
	The number of loops (i.e number of iterator->Init() calls. More...
uint64_t	GetNumRows () const override
	The number of rows fetched. More...
void	StopInit (TimeStamp start_time)
void	IncrementNumRows (uint64_t materialized_rows)
void	StopRead (TimeStamp start_time, bool read_ok)
Public Member Functions inherited from IteratorProfiler
virtual	~IteratorProfiler ()=default

Static Public Member Functions
static TimeStamp	Now ()

Detailed Description

This is a no-op class with a public interface identical to that of the IteratorProfilerImpl class.

This allows iterators with internal time keeping (such as MaterializeIterator) to use the same code whether time keeping is enabled or not. And all the mutators are inlinable no-ops, so that there should be no runtime overhead.

Member Function Documentation

GetFirstRowMs()

double DummyIteratorProfiler::GetFirstRowMs ( ) const

inlineoverridevirtual

Time (in ms) spent fetching the first row.

(Sum for all loops.)

Implements IteratorProfiler.

GetLastRowMs()

double DummyIteratorProfiler::GetLastRowMs ( ) const

inlineoverridevirtual

Time (in ms) spent fetching the remaining rows.

(Sum for all loops.)

Implements IteratorProfiler.

GetNumInitCalls()

uint64_t DummyIteratorProfiler::GetNumInitCalls ( ) const

inlineoverridevirtual

The number of loops (i.e number of iterator->Init() calls.

Implements IteratorProfiler.

GetNumRows()

uint64_t DummyIteratorProfiler::GetNumRows ( ) const

inlineoverridevirtual

The number of rows fetched.

(Sum for all loops.)

Implements IteratorProfiler.

IncrementNumRows()

void DummyIteratorProfiler::IncrementNumRows ( uint64_t  materialized_rows )

inline

Now()

static TimeStamp DummyIteratorProfiler::Now ( )

inlinestatic

StopInit()

void DummyIteratorProfiler::StopInit ( TimeStamp  start_time )

inline

StopRead()

void DummyIteratorProfiler::StopRead ( TimeStamp  start_time, bool  read_ok  )

inline

---

The documentation for this class was generated from the following file:

• sql/iterators/composite_iterators.cc