net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar > Class Template Reference

#include "statistics_template.h"

Inheritance diagram for net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >:

Public Member Functions
virtual Var *	AddVariable (const StringPiece &name)
virtual UpDown *	AddUpDownCounter (const StringPiece &name)
virtual UpDown *	AddGlobalUpDownCounter (const StringPiece &name)
virtual Var *	FindVariable (const StringPiece &name) const
	Find a variable from a name, returning NULL if not found.
virtual UpDown *	FindUpDownCounter (const StringPiece &name) const
	Find a variable from a name, returning NULL if not found.
virtual Hist *	AddHistogram (const StringPiece &name)
virtual Hist *	FindHistogram (const StringPiece &name) const
	Find a histogram from a name, returning NULL if not found.
virtual TimedVar *	AddTimedVariable (const StringPiece &name, const StringPiece &group)
virtual TimedVar *	FindTimedVariable (const StringPiece &name) const
	Find a TimedVariable from a name, returning NULL if not found.
virtual const StringVector &	HistogramNames ()
	Return the names of all the histograms for render.
virtual const std::map < GoogleString, StringVector > &	TimedVariableMap ()
	Return the map of groupnames and names of all timedvariables for render.
virtual void	Dump (Writer *writer, MessageHandler *message_handler)
	Dump the variable-values to a writer.
virtual void	DumpJson (Writer *writer, MessageHandler *message_handler)
virtual void	Clear ()
Public Member Functions inherited from net_instaweb::Statistics
UpDownCounter *	GetUpDownCounter (const StringPiece &name) const
	Find a variable from a name, aborting if not found.
Variable *	GetVariable (const StringPiece &name) const
	Find a variable from a name, aborting if not found.
Histogram *	GetHistogram (const StringPiece &name) const
	Find a histogram from a name, aborting if not found.
TimedVariable *	GetTimedVariable (const StringPiece &name) const
	Find a TimedVariable from a name, aborting if not found.
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 StatisticsLogger *	console_logger ()
int64	LookupValue (StringPiece stat_name)

Protected Member Functions
virtual Var *	NewVariable (StringPiece name)=0
	Interface to subclass.
virtual UpDown *	NewUpDownCounter (StringPiece name)=0
	Interface to subclass.
virtual UpDown *	NewGlobalUpDownCounter (StringPiece name)
	Default implementation just calls NewUpDownCounter.
virtual Hist *	NewHistogram (StringPiece name)=0
virtual TimedVar *	NewTimedVariable (StringPiece name)=0
size_t	variables_size () const
Var *	variables (size_t pos)
size_t	up_down_size () const
UpDown *	up_downs (size_t pos)
size_t	histograms_size () const
Hist *	histograms (size_t pos)
const GoogleString &	histogram_names (size_t pos) const

Additional Inherited Members
Static Public Attributes inherited from net_instaweb::Statistics
static const char	kDefaultGroup []
	Default group for use with AddTimedVariable.

Detailed Description

template<class Var, class UpDown, class Hist, class TimedVar>
class net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >

This class makes it easier to define new Statistics implementations by providing a templatized implementation of variable registration and management.

Member Function Documentation

template<class Var, class UpDown, class Hist, class TimedVar>

virtual UpDown* net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >::AddGlobalUpDownCounter ( const StringPiece &  name )

inlinevirtual

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 from net_instaweb::Statistics.

template<class Var, class UpDown, class Hist, class TimedVar>

virtual Hist* net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >::AddHistogram ( const StringPiece &  name )

inlinevirtual

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.

Implements net_instaweb::Statistics.

template<class Var, class UpDown, class Hist, class TimedVar>

virtual TimedVar* net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >::AddTimedVariable ( const StringPiece &  name, const StringPiece &  group  )

inlinevirtual

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.

Implements net_instaweb::Statistics.

template<class Var, class UpDown, class Hist, class TimedVar>

virtual UpDown* net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >::AddUpDownCounter ( const StringPiece &  name )

inlinevirtual

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.

Implements net_instaweb::Statistics.

template<class Var, class UpDown, class Hist, class TimedVar>

virtual Var* net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >::AddVariable ( const StringPiece &  name )

inlinevirtual

Implementations of Statistics API — see base class docs for description.

Implements net_instaweb::Statistics.

template<class Var, class UpDown, class Hist, class TimedVar>

virtual void net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >::Clear ( )

inlinevirtual

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

Implements net_instaweb::Statistics.

template<class Var, class UpDown, class Hist, class TimedVar>

virtual void net_instaweb::StatisticsTemplate< Var, UpDown, Hist, TimedVar >::DumpJson ( Writer *  writer, MessageHandler *  message_handler  )

inlinevirtual

The string written to the writer will be like this: {"variables": {"cache_hits": 10,"cache_misses": 5,...}, "maxlength": 50}

Implements net_instaweb::Statistics.

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

• pagespeed/kernel/base/statistics_template.h