[vtkusers] Why vtkAbstractTransform don't use vtkCriticalSectioninstead of vtkSimpleCriticalSection ?

[Chris Volpe]

One advantage of vtkCriticalSection is that it is accessible from the script level. However, since I intended it as a higher-performance alternative to vtkMutexLock, that's clearly a weak argument. As for why vtkSimpleCriticalSection is a separate non-vtkObject-derived class, I suppose I was mimicking the architecture of vtkMutexLock, which has a similar structure. It's been a few years, so that's the best explanation I can give right now.

 

Chris

--
Christopher R. Volpe, Ph.D.                                                       
Senior Scientist                                                           Email: cvolpe at ara.com
Applied Research Associates, Inc.                                Voice: 919-582-3380
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-----Original Message-----
From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf Of REGAT-BARREL Aurélien
Sent: Wednesday, August 11, 2004 3:48 AM
To: David Gobbi
Cc: VTK
Subject: Re: [vtkusers] Why vtkAbstractTransform don't use vtkCriticalSectioninstead of vtkSimpleCriticalSection ?

 

David Gobbi <dgobbi at imaging.robarts.ca> wrote:

	A vtkSimpleCriticalSection takes up a few bytes less (100 or so?) than a
	vtkCriticalSection, specifically because it is not a subclass of vtkObject.

My test shows that it saves 24 bytes (52 - 28). But my question is : what is vtkCriticalSection for ? Why don't use only vtkSimpleCriticalSection and remove / replace vtkCriticalSection ?

When should we use vtkCriticalSection ?



Aurélien REGAT-BARREL

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