DispatcherLoop Class Reference

Description

PImpl within SteamDispatcher to implement the Session Loop Thread. During the lifetime of this object...

• the SessionCommandService is offered to enqueue commands
• the Session Loop thread dispatches commands and triggers the Builder

  See also

  DispatcherLooper_test

Definition at line 119 of file steam-dispatcher.cpp.

Public Member Functions
template<typename FUN >
	DispatcherLoop (FUN &&atExit)
	start the session loop thread More...
void	activateCommandProecssing ()
void	awaitStateProcessed () const
void	clear () override
void	deactivateCommandProecssing ()
void	enqueue (Command &&cmd) override
void	requestStop () noexcept
size_t	size () const
Public Member Functions inherited from CommandDispatch
virtual	~CommandDispatch ()
	this is an interface

Private Types
using	Launch = lib::ThreadHookable::Launch
using	ServiceHandle = lib::DependInject< SessionCommandService >::ServiceInstance<>

Private Member Functions
void	awaitAction ()
bool	isStateSynched () const
void	processCommands ()
void	runSessionThread ()
	any operation running in the Session thread is started from here. More...
void	startBuilder ()
void	updateState ()

Private Attributes
ServiceHandle	commandService_
	manage the primary public Session interface
string	error_
SyncBarrier	init_
Looper	looper_
CommandQueue	queue_
ThreadHookable	thread_

Additional Inherited Members
Static Public Member Functions inherited from Sync< RecursiveLock_Waitable >
static Monitor &	getMonitor (Sync const *forThis)

Constructor & Destructor Documentation

DispatcherLoop()

DispatcherLoop ( FUN &&  atExit )

inline

start the session loop thread

Parameters

notification

callback to invoke on thread termination

Remarks

in theory this ctor could block, since it waits for the thread actually to get operational and it waits for the SessionCommand interface to be opened. The latter better should not run into any obstacles, because in case it does, the main application thread will be deadlocked on startup. Such might happen indirectly, when something depends on "the Session"

Definition at line 145 of file steam-dispatcher.cpp.

References ThreadWrapper::detach_thread_from_wrapper(), ERROR_LOG_AND_IGNORE, and DispatcherLoop::runSessionThread().

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Member Function Documentation

runSessionThread()

void runSessionThread ( )

inlineprivate

any operation running in the Session thread is started from here.

When this loop terminates, the »session subsystem« shuts down.

Note

the callback notifyEnd is typically bound to invoke SteamDispatcher::endRunningLoopState().

Definition at line 251 of file steam-dispatcher.cpp.

References cStr(), Looper::hasPendingChanges(), SteamDispatcher::instance, ThreadWrapper::invokedWithinThread(), lumiera_error(), Looper::markStateProcessed(), Looper::requireAction(), and Looper::shallLoop().

Referenced by DispatcherLoop::DispatcherLoop().

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

• steam-dispatcher.cpp