Base class for implementations of monitoring statistics. More...

#include "statistics.h"

Inheritance diagram for net_instaweb::Statistics:

Public Member Functions
virtual UpDownCounter *	AddUpDownCounter (const StringPiece &name)=0

virtual UpDownCounter *	AddGlobalUpDownCounter (const StringPiece &name)

virtual UpDownCounter *	FindUpDownCounter (const StringPiece &name) const =0
	Find a variable from a name, returning NULL if not found.

UpDownCounter *	GetUpDownCounter (const StringPiece &name) const
	Find a variable from a name, aborting if not found.

virtual Variable *	AddVariable (const StringPiece &name)=0

virtual Variable *	FindVariable (const StringPiece &name) const =0
	Find a variable from a name, returning NULL if not found.

Variable *	GetVariable (const StringPiece &name) const
	Find a variable from a name, aborting if not found.

virtual Histogram *	AddHistogram (const StringPiece &name)=0

virtual Histogram *	FindHistogram (const StringPiece &name) const =0
	Find a histogram from a name, returning NULL if not found.

Histogram *	GetHistogram (const StringPiece &name) const
	Find a histogram from a name, aborting if not found.

virtual TimedVariable *	AddTimedVariable (const StringPiece &name, const StringPiece &group)=0

virtual TimedVariable *	FindTimedVariable (const StringPiece &name) const =0
	Find a TimedVariable from a name, returning NULL if not found.

TimedVariable *	GetTimedVariable (const StringPiece &name) const
	Find a TimedVariable from a name, aborting if not found.

virtual const StringVector &	HistogramNames ()=0
	Return the names of all the histograms for render.

virtual const std::map < GoogleString, StringVector > &	TimedVariableMap ()=0
	Return the map of groupnames and names of all timedvariables for render.

virtual void	Dump (Writer writer, MessageHandler handler)=0
	Dump the variable-values to a writer.

virtual void	DumpJson (Writer writer, MessageHandler message_handler)=0
	Dump the variable-values in JSON format to a writer.

virtual void	RenderTimedVariables (Writer writer, MessageHandler handler)

virtual void	RenderHistograms (Writer writer, MessageHandler handler)
	Write all the histograms in this Statistic object to a writer.

virtual void	Clear ()=0

virtual StatisticsLogger *	console_logger ()

int64	LookupValue (StringPiece stat_name)

Static Public Attributes
static const char	kDefaultGroup []
	Default group for use with AddTimedVariable.

Detailed Description

Base class for implementations of monitoring statistics.

Member Function Documentation

virtual UpDownCounter* net_instaweb::Statistics::AddGlobalUpDownCounter ( const StringPiece & name )

virtual

Like AddVariable, but asks the implementation to scope the variable to the entire process, even if statistics are generally partitioned by domains or the like. Default implementation simply forwards to AddVariable.

Reimplemented in net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >, net_instaweb::StatisticsTemplate< VarTemplate< SharedMemVariable >, UpDownTemplate< SharedMemVariable >, SharedMemHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< VarTemplate< Impl >, UpDownTemplate< Impl >, HistC, TVarC >, net_instaweb::StatisticsTemplate< VarTemplate< NullStatisticsVariable >, UpDownTemplate< NullStatisticsVariable >, CountHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< SplitVariable, SplitUpDownCounter, SplitHistogram, SplitTimedVariable >, and net_instaweb::StatisticsTemplate< VarTemplate< SimpleStatsVariable >, UpDownTemplate< SimpleStatsVariable >, CountHistogram, FakeTimedVariable >.

virtual Histogram* net_instaweb::Statistics::AddHistogram ( const StringPiece & name )

pure virtual

Add a new histogram, or returns an existing one of that name. The Histogram* is owned by the Statistics class – it should not be deleted by the caller.

Implemented in net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >, net_instaweb::StatisticsTemplate< VarTemplate< SharedMemVariable >, UpDownTemplate< SharedMemVariable >, SharedMemHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< VarTemplate< Impl >, UpDownTemplate< Impl >, HistC, TVarC >, net_instaweb::StatisticsTemplate< VarTemplate< NullStatisticsVariable >, UpDownTemplate< NullStatisticsVariable >, CountHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< SplitVariable, SplitUpDownCounter, SplitHistogram, SplitTimedVariable >, and net_instaweb::StatisticsTemplate< VarTemplate< SimpleStatsVariable >, UpDownTemplate< SimpleStatsVariable >, CountHistogram, FakeTimedVariable >.

virtual TimedVariable* net_instaweb::Statistics::AddTimedVariable	(	const StringPiece &	name,
		const StringPiece &	group
	)

pure virtual

Add a new TimedVariable, or returns an existing one of that name. The TimedVariable* is owned by the Statistics class – it should not be deleted by the caller. Each stat belongs to a group, such as "Statistics", "Disk Statistics", etc.

Implemented in net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >, net_instaweb::StatisticsTemplate< VarTemplate< SharedMemVariable >, UpDownTemplate< SharedMemVariable >, SharedMemHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< VarTemplate< Impl >, UpDownTemplate< Impl >, HistC, TVarC >, net_instaweb::StatisticsTemplate< VarTemplate< NullStatisticsVariable >, UpDownTemplate< NullStatisticsVariable >, CountHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< SplitVariable, SplitUpDownCounter, SplitHistogram, SplitTimedVariable >, and net_instaweb::StatisticsTemplate< VarTemplate< SimpleStatsVariable >, UpDownTemplate< SimpleStatsVariable >, CountHistogram, FakeTimedVariable >.

virtual UpDownCounter* net_instaweb::Statistics::AddUpDownCounter ( const StringPiece & name )

pure virtual

Add a new variable, or returns an existing one of that name. The UpDownCounter* is owned by the Statistics class – it should not be deleted by the caller.

Implemented in net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >, net_instaweb::StatisticsTemplate< VarTemplate< SharedMemVariable >, UpDownTemplate< SharedMemVariable >, SharedMemHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< VarTemplate< Impl >, UpDownTemplate< Impl >, HistC, TVarC >, net_instaweb::StatisticsTemplate< VarTemplate< NullStatisticsVariable >, UpDownTemplate< NullStatisticsVariable >, CountHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< SplitVariable, SplitUpDownCounter, SplitHistogram, SplitTimedVariable >, and net_instaweb::StatisticsTemplate< VarTemplate< SimpleStatsVariable >, UpDownTemplate< SimpleStatsVariable >, CountHistogram, FakeTimedVariable >.

virtual Variable* net_instaweb::Statistics::AddVariable ( const StringPiece & name )

pure virtual

Add a new variable, or returns an existing one of that name. The Variable* is owned by the Statistics class – it should not be deleted by the caller.

Implemented in net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >, net_instaweb::StatisticsTemplate< VarTemplate< SharedMemVariable >, UpDownTemplate< SharedMemVariable >, SharedMemHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< VarTemplate< Impl >, UpDownTemplate< Impl >, HistC, TVarC >, net_instaweb::StatisticsTemplate< VarTemplate< NullStatisticsVariable >, UpDownTemplate< NullStatisticsVariable >, CountHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< SplitVariable, SplitUpDownCounter, SplitHistogram, SplitTimedVariable >, and net_instaweb::StatisticsTemplate< VarTemplate< SimpleStatsVariable >, UpDownTemplate< SimpleStatsVariable >, CountHistogram, FakeTimedVariable >.

virtual void net_instaweb::Statistics::Clear ( )

pure virtual

Set all variables to 0. Throw away all data in histograms and stats.

Implemented in net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >, net_instaweb::StatisticsTemplate< VarTemplate< SharedMemVariable >, UpDownTemplate< SharedMemVariable >, SharedMemHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< VarTemplate< Impl >, UpDownTemplate< Impl >, HistC, TVarC >, net_instaweb::StatisticsTemplate< VarTemplate< NullStatisticsVariable >, UpDownTemplate< NullStatisticsVariable >, CountHistogram, FakeTimedVariable >, net_instaweb::StatisticsTemplate< SplitVariable, SplitUpDownCounter, SplitHistogram, SplitTimedVariable >, and net_instaweb::StatisticsTemplate< VarTemplate< SimpleStatsVariable >, UpDownTemplate< SimpleStatsVariable >, CountHistogram, FakeTimedVariable >.

virtual StatisticsLogger* net_instaweb::Statistics::console_logger ( )

inlinevirtual

This is implemented as NULL here because most Statistics don't need it. In the context in which it is needed we only have access to a Statistics*, rather than the specific subclass, hence its being here. Return the StatisticsLogger associated with this Statistics.

Reimplemented in net_instaweb::SharedMemStatistics, and net_instaweb::SplitStatistics.

int64 net_instaweb::Statistics::LookupValue ( StringPiece stat_name )

Testing helper method to look up a statistics numeric value by name. Please do not use this in production code. This finds the current value whether it is stored in a Variable, UpDownCounter, or TimedVariable.

If the statistics is not found, the program check-fails.

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

pagespeed/kernel/base/statistics.h

Public Member Functions

Static Public Attributes

Detailed Description

Member Function Documentation