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Re: Sharing and Locking [message #25678 is a reply to message #25676]

Sun, 07 March 2010 16:38

gridem is currently offline

gridem
Messages: 45
Registered: August 2008

Member

Mirek, thank you for your answer.

luzr wrote on Sun, 07 March 2010 16:40

1) Ptr and Pte are VERY different beasts as compared to shared_ptr (but you probably know that).

Yes, it different but tries to solve the same kind of problems IMO. I think that shared_ptr has more cleared semantics than Pte/Ptr. May be the reason of this is that I used shared_ptr a lot before and try to use Pte/Ptr like shared_ptr.

luzr wrote on Sun, 07 March 2010 16:40

2) They DO use atomic operations, therefore within its modus operandi, they are completely MT safe (as is or should be the whole U++ now).

Mirek

So I mean that Pte uses Mutex (more precisely, StaticMutex) and in general it can have some problems in high concurency application. Lock-free implementation like atomic operations produces better performance results in general.

The original problem starts from the task to provide the cache in high-loaded service with limited amount of memory.

[Updated on: Sun, 07 March 2010 20:00]

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[Message index]

		Sharing and Locking By: gridem on Sun, 07 March 2010 09:27
		Re: Sharing and Locking By: mirek on Sun, 07 March 2010 14:40
		Re: Sharing and Locking By: gridem on Sun, 07 March 2010 16:38
		Re: Sharing and Locking By: mirek on Mon, 08 March 2010 01:42
		Re: Sharing and Locking By: gridem on Mon, 08 March 2010 10:57
		Re: Sharing and Locking By: gridem on Sun, 14 March 2010 13:37
		Re: Sharing and Locking By: mirek on Sun, 14 March 2010 18:58
		Re: Sharing and Locking By: gridem on Mon, 15 March 2010 21:26
		Re: Sharing and Locking By: mirek on Tue, 16 March 2010 06:02
		Re: Sharing and Locking By: gridem on Tue, 16 March 2010 08:04
		Re: Sharing and Locking By: mirek on Tue, 16 March 2010 23:50
		Re: Sharing and Locking By: gridem on Fri, 19 March 2010 07:44
		Re: Sharing and Locking By: mirek on Fri, 19 March 2010 07:59
		Re: Sharing and Locking By: gridem on Sat, 20 March 2010 10:21
		Re: Sharing and Locking By: mirek on Sun, 21 March 2010 07:37
		Re: Sharing and Locking By: gridem on Sun, 21 March 2010 11:39
		Re: Sharing and Locking By: mirek on Sun, 21 March 2010 14:21
		Re: Sharing and Locking By: gridem on Thu, 01 April 2010 09:14
		Re: Sharing and Locking By: mirek on Tue, 16 March 2010 06:14

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