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Re: MT/Locking Questions [message #15560 is a reply to message #15529]

Tue, 29 April 2008 10:03

mr_ped is currently offline

mr_ped
Messages: 825
Registered: November 2005
Location: Czech Republic - Praha

Experienced Contributor

Well, I never did MT with U++, so I have no direct experience, but that's what makes *sense* to me.

Thinking more about it, the instantiated non-static mutex may be enough, if the multiple threads are working with the same instance of the class with the accessed static variable, but that imposes additional burden on mind of programmer, to never introduce another instance.

Anyway, a search trough files in uppsrc leads to these interesting lines:
C:\upp\uppsrc\Core\heap.cpp(115):static StaticMutex sHeapLock;
C:\upp\uppsrc\Core\Mt.cpp(9): static Mutex *section;
C:\upp\uppsrc\Draw\Draw.cpp(9):static StaticMutex sDrawLock;

As you can see, there's some StaticMutex class also. I'm looking at the source right now, but I have still no idea why ordinary Mutex would be not good enough even for static variable of class.

Sorry.

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[Message index]

		MT/Locking Questions By: captainc on Mon, 28 April 2008 15:23
		Re: MT/Locking Questions By: mirek on Mon, 28 April 2008 19:41
		Re: MT/Locking Questions By: captainc on Mon, 28 April 2008 20:00
		Re: MT/Locking Questions By: mr_ped on Mon, 28 April 2008 20:57
		Re: MT/Locking Questions By: captainc on Mon, 28 April 2008 22:10
		Re: MT/Locking Questions By: mr_ped on Tue, 29 April 2008 10:03
		Re: MT/Locking Questions By: mirek on Tue, 29 April 2008 19:09
		Re: MT/Locking Questions By: mr_ped on Tue, 29 April 2008 21:49
		Re: MT/Locking Questions By: mirek on Wed, 30 April 2008 10:51
		Re: MT/Locking Questions By: mr_ped on Wed, 30 April 2008 16:04
		Re: MT/Locking Questions By: mirek on Wed, 30 April 2008 21:05

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