This class works in conjuction with TMPClient, reacting to messages received from it as specified by the Notify and HandleInput methods.

When TMPClient::Fork is called, a TMPWorker instance is passed to it which will take control of the ROOT session in the children processes.

After forking, every time a message is sent or broadcast to the workers, TMPWorker::Notify is called and the message is retrieved. Messages exchanged between TMPClient and TMPWorker should be sent with the MPSend() standalone function.
If the code of the message received is above 1000 (i.e. it is an MPCode) the qualified TMPWorker::HandleInput method is called, that takes care of handling the most generic type of messages. Otherwise the unqualified (possibly overridden) version of HandleInput is called, allowing classes that inherit from TMPWorker to manage their own protocol.
An application's worker class should inherit from TMPWorker and implement a HandleInput method that overrides TMPWorker's.

Definition at line 20 of file TMPWorker.h.

Public Member Functions
	TMPWorker ()
	Class constructor. More...

virtual	~TMPWorker ()

	TMPWorker (const TMPWorker &)=delete

TMPWorker &	operator= (const TMPWorker &)=delete

virtual void	Init (int fd, unsigned workerN)
	This method is called by children processes right after forking. More...

void	Run ()

TSocket *	GetSocket ()

pid_t	GetPid ()

unsigned	GetNWorker () const

Private Member Functions
virtual void	HandleInput (MPCodeBufPair &msg)
	Handle a message with an EMPCode. More...

Private Attributes
std::unique_ptr< TSocket >	fS
	This worker's socket. The unique_ptr makes sure resources are released. More...

pid_t	fPid
	the PID of the process in which this worker is running More...

unsigned	fNWorker
	the ordinal number of this worker (0 to nWorkers-1) More...

#include <TMPWorker.h>

Inheritance diagram for TMPWorker:

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Constructor & Destructor Documentation

TMPWorker::TMPWorker ( )

Class constructor.

Note that this does not set variables like fPid or fS (worker's socket).
These operations are handled by the Init method, which is called after forking.
This separation is in place because the instantiation of a worker must be done once before forking, while the initialization of the members must be done after forking by each of the children processes.

Definition at line 42 of file TMPWorker.cxx.

virtual TMPWorker::~TMPWorker ( )

inlinevirtual

Definition at line 26 of file TMPWorker.h.

TMPWorker::TMPWorker ( const TMPWorker & )

delete

Member Function Documentation

unsigned TMPWorker::GetNWorker ( ) const

inline

Definition at line 35 of file TMPWorker.h.

Referenced by TPoolWorker< F, T, R >::HandleInput(), TPoolWorker< F, void, R >::HandleInput(), and TPoolWorker< F, T, void >::HandleInput().

pid_t TMPWorker::GetPid ( )

inline

Definition at line 34 of file TMPWorker.h.

TSocket* TMPWorker::GetSocket ( )

inline

Definition at line 33 of file TMPWorker.h.

Referenced by TPoolWorker< F, T, R >::HandleInput(), TPoolWorker< F, void, R >::HandleInput(), and TPoolWorker< F, T, void >::HandleInput().

void TMPWorker::HandleInput ( MPCodeBufPair & msg )

privatevirtual

Handle a message with an EMPCode.

This method is called upon receiving a message with a code >= 1000 (i.e. EMPCode). It handles the most generic types of messages.
Classes inheriting from TMPWorker should implement their own HandleInput function, that should be able to handle codes specific to that application.
The appropriate version of the HandleInput method (TMPWorker's or the overriding version) is automatically called depending on the message code.

Reimplemented in TPoolWorker< F, T, void >, TPoolWorker< F, void, R >, TPoolProcessor< F >, and TPoolWorker< F, T, R >.

Definition at line 88 of file TMPWorker.cxx.

Referenced by Run().

void TMPWorker::Init	(	int	fd,
		unsigned	workerN
	)

virtual

This method is called by children processes right after forking.

Initialization of worker properties that must be delayed until after forking must be done here.
For example, Init saves the pid into fPid, and adds the TMPWorker to the main eventloop (as a TFileHandler).
Make sure this operations are performed also by overriding implementations, e.g. by calling TMPWorker::Init explicitly.

Reimplemented in TPoolProcessor< F >.

Definition at line 55 of file TMPWorker.cxx.

Referenced by TMPClient::Fork(), and TPoolProcessor< F >::Init().

TMPWorker& TMPWorker::operator= ( const TMPWorker & )

delete

void TMPWorker::Run ( )

Definition at line 63 of file TMPWorker.cxx.

Referenced by TMPClient::Fork().