ml::PageRequestProcessor Class Reference

Abstract base class for page request processors. More...

#include <mlPageRequestProcessor.h>

Inheritance diagram for ml::PageRequestProcessor:

Public Member Functions
	~PageRequestProcessor () override
	Virtual destructor.
virtual void	addRootTileRequest (TileRequest *tileRequest)=0
	Adds the root tileRequest that should be processed; the ownership stays with the caller.
virtual void	processAll ()=0
	Processes all requests until the cursors have traversed the whole tree and the queue is empty.
virtual void	process (double timeBudget)=0
	Processes the requests for the given timeBudget given in seconds.
virtual bool	needsProcessing ()=0
	Returns whether the tile request needs some more processing.
virtual void	removeCancelledRequests ()=0
	Removes all requests that are canceled and no longer needed.
virtual void	enterProcessingScope ()=0
	Enters a recursive processing scope (always called from main thread!).
virtual void	leaveProcessingScope ()=0
	Leaves a recursive processing scope. This is always called from main thread!
virtual void	setNumWorkerThreads (std::size_t)=0
	Sets number of worker threads (available here even if subclasses may not support it).
virtual bool	processingWasSingleThreaded () const =0
	Returns whether the last request was processed single or multithreaded.
Public Member Functions inherited from ml::PageRequestQueueInterface
virtual	~PageRequestQueueInterface ()
	Virtual destructor to get rid of warning.
virtual void	append (PageRequest *request)=0
	Appends PageRequest request that is ready for processing to the work queue.

Static Public Member Functions
static void	enableTileRequestAllocationFailure (int count=1)
	Enables failing on every count allocation.
static void	disableTileRequestAllocationFailure ()
	Disables allocation failure. This is the default!

Detailed Description

Abstract base class for page request processors.

Definition at line 46 of file mlPageRequestProcessor.h.

Constructor & Destructor Documentation

~PageRequestProcessor()

ml::PageRequestProcessor::~PageRequestProcessor ( )

inlineoverride

Virtual destructor.

Definition at line 50 of file mlPageRequestProcessor.h.

Member Function Documentation

addRootTileRequest()

virtual void ml::PageRequestProcessor::addRootTileRequest ( TileRequest * tileRequest )

pure virtual

Adds the root tileRequest that should be processed; the ownership stays with the caller.

Implemented in ml::MultiThreadedPageRequestProcessor, and ml::SingleThreadedPageRequestProcessor.

disableTileRequestAllocationFailure()

static void ml::PageRequestProcessor::disableTileRequestAllocationFailure ( )

static

Disables allocation failure. This is the default!

enableTileRequestAllocationFailure()

static void ml::PageRequestProcessor::enableTileRequestAllocationFailure ( int count = 1 )

static

Enables failing on every count allocation.

enterProcessingScope()

virtual void ml::PageRequestProcessor::enterProcessingScope ( )

pure virtual

Enters a recursive processing scope (always called from main thread!).

Default scope is 0 (which is used for requests from the background tasks). Host::getTile requests will have a scope of 1 (or more if called recursively) Needs to be called before addRootTileRequest() if the request should be inside of a scope.

Implemented in ml::MultiThreadedPageRequestProcessor, and ml::PageRequestProcessorBase.

leaveProcessingScope()

virtual void ml::PageRequestProcessor::leaveProcessingScope ( )

pure virtual

Leaves a recursive processing scope. This is always called from main thread!

Implemented in ml::MultiThreadedPageRequestProcessor, and ml::PageRequestProcessorBase.

needsProcessing()

virtual bool ml::PageRequestProcessor::needsProcessing ( )

pure virtual

Returns whether the tile request needs some more processing.

Implemented in ml::MultiThreadedPageRequestProcessor, and ml::SingleThreadedPageRequestProcessor.

process()

virtual void ml::PageRequestProcessor::process ( double timeBudget )

pure virtual

Processes the requests for the given timeBudget given in seconds.

Implemented in ml::MultiThreadedPageRequestProcessor, and ml::SingleThreadedPageRequestProcessor.

processAll()

virtual void ml::PageRequestProcessor::processAll ( )

pure virtual

Processes all requests until the cursors have traversed the whole tree and the queue is empty.

Implemented in ml::MultiThreadedPageRequestProcessor, and ml::SingleThreadedPageRequestProcessor.

processingWasSingleThreaded()

virtual bool ml::PageRequestProcessor::processingWasSingleThreaded ( ) const

pure virtual

Returns whether the last request was processed single or multithreaded.

Implemented in ml::MultiThreadedPageRequestProcessor, and ml::SingleThreadedPageRequestProcessor.

removeCancelledRequests()

virtual void ml::PageRequestProcessor::removeCancelledRequests ( )

pure virtual

Removes all requests that are canceled and no longer needed.

Implemented in ml::PageRequestProcessorBase.

setNumWorkerThreads()

virtual void ml::PageRequestProcessor::setNumWorkerThreads ( std::size_t )

pure virtual

Sets number of worker threads (available here even if subclasses may not support it).

Implemented in ml::MultiThreadedPageRequestProcessor, and ml::SingleThreadedPageRequestProcessor.

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

• MeVis/Foundation/Sources/ML/include/host/mlPageRequestProcessor.h