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SEDAStage< In, void > Class Template Reference

Inherits seda_stage_base.

List of all members.

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Detailed Description

template<class In>
class SEDAStage< In, void >

A stage in a SEDA (staged, event-driven application) decomposition.

A SEDAStage must always take, as input, an object of the type specified as the first template argument. (Generally a server will define a "work unit" type that includes a reference to the client Socket.) If always generates a particular kind of output element, consider using the SEDAStage<In, Out> construction that lets the user of your component specify a particular "next" stage.

Public Methods
	SEDAStage (string name=string())
	Constructor.
virtual	~SEDAStage ()
	Destructor.
void	scan ()
	Periodic scan to see whether to kill a Thread.
void	set_nthreads (unsigned int min, unsigned int max)
	Sets the minimum and maximum number of threads (inclusive) which may be assigned to this stage.
void	inject (In &in)
	Injects an element into the queue.
virtual void	handle (In &in)=0
	Called on some handler Thread for each input element.
virtual void	clogged (In &in)
	Called when someone tries to inject an element into the queue, but there are no handlers available to service it.
Protected Methods
void	add_threads ()
Friends
class	my_thread

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Constructor & Destructor Documentation

template<class In> virtual SEDAStage< In, void >::~SEDAStage (    )  [virtual]

Destructor. Joins all active handler threads, so this will not complete until all handlers exit (this is necessary because the handler threads may invoke methods on this class).

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Member Function Documentation

template<class In> void SEDAStage< In, void >::add_threads (    )  [protected]

template<class In> virtual void SEDAStage< In, void >::clogged (  In &    in )  [virtual]

Called when someone tries to inject an element into the queue, but there are no handlers available to service it. This is invoked on the same Thread which calls inject (before inject returns) so it must return very quickly.

template<class In> virtual void SEDAStage< In, void >::handle (  In &    in )  [pure virtual]

Called on some handler Thread for each input element.

template<class In> void SEDAStage< In, void >::inject (  In &    in )

Injects an element into the queue.

template<class In> void SEDAStage< In, void >::scan (    )  [virtual]

Periodic scan to see whether to kill a Thread. Implements seda_stage_base.

template<class In> SEDAStage< In, void >::SEDAStage (  string    name = string() )

Constructor.

template<class In> void SEDAStage< In, void >::set_nthreads (  unsigned int    min, unsigned int    max )  [virtual]

Sets the minimum and maximum number of threads (inclusive) which may be assigned to this stage. Implements seda_stage_base.

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Friends And Related Function Documentation

template<class In> friend class my_thread [friend]

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

• seda

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