SessionSubsystem Class Reference

Description

Definition at line 55 of file facade.cpp.

Private Member Functions
bool	checkRunningState () noexcept override
	whether this subsystem is actually operational. More...
	operator string () const
	a human readable name
bool	shouldStart (Option &) override
bool	start (Option &, Subsys::SigTerm termNotification) override
	attempt to bring up this subsystem up. More...
void	triggerShutdown () noexcept override
	initiate termination of this subsystem. More...

Additional Inherited Members
Public Types inherited from Subsys
typedef function< void(string *)>	SigTerm
Public Member Functions inherited from Subsys
Subsys &	depends (Subsys &prereq)
	define a dependency to another Subsys required for running this subsystem
const std::vector< Subsys * >	getPrerequisites ()
bool	isRunning () noexcept

Member Function Documentation

shouldStart()

bool shouldStart ( Option &  )

inlineoverrideprivatevirtual

Remarks

there is no need explicitly to start the session, since it is passive, waiting for invocations and will be pulled up as prerequisite of other subsystems.

Implements Subsys.

Definition at line 64 of file facade.cpp.

start()

bool start ( Option &  options, Subsys::SigTerm    )

inlineoverrideprivatevirtual

attempt to bring up this subsystem up.

On return, the subsystem must be operational, according to checkRunningState(). Failure to start up usually terminates the whole application. When this subsystem ceases to work, it must ensure to activate the given callback signal.

Parameters

options	may be influencing the operation mode
SigTerm	to be signalled by the subsystem.

Warning

termination must be signalled reliably.

Returns

true if actually started.

Implements Subsys.

Definition at line 70 of file facade.cpp.

References SteamDispatcher::instance.

triggerShutdown()

void triggerShutdown ( )

inlineoverrideprivatevirtualnoexcept

initiate termination of this subsystem.

This trigger may be called repeatedly any time... When the subsystem actually has terminated, the SigTerm passed to start must be invoked.

Note

called within a locked context (barrier)

Warning

must not block nor throw.

Implements Subsys.

Definition at line 76 of file facade.cpp.

References SteamDispatcher::instance.

checkRunningState()

bool checkRunningState ( )

inlineoverrideprivatevirtualnoexcept

whether this subsystem is actually operational.

When returning false here, the application may terminate at any point without further notice Note further, that a subsystem must not be in running state when signalling termination.

Implements Subsys.

Definition at line 82 of file facade.cpp.

References SteamDispatcher::instance.

Inheritance diagram for SessionSubsystem:

Collaboration diagram for SessionSubsystem:

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

• facade.cpp