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Re: Use same variable in different threads [message #30173 is a reply to message #30167] |
Mon, 13 December 2010 11:46 |
gprentice
Messages: 260 Registered: November 2005 Location: New Zealand
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Experienced Member |
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I'm guessing that if you have one thread writing to shared data and another thread reading the shared data (no writing), both threads have to acquire the mutex before accessing the data - even a thread that's only reading. There are ways of organizing things so that multiple threads can have read access to the data at the same time, instead of all blocking each other.
http://en.wikipedia.org/wiki/Readers-writers_problem
Graeme
Edit - oops, I didn't see tojocky's post before I wrote mine but it looks like we're on the same subject.
[Updated on: Mon, 13 December 2010 11:48] Report message to a moderator
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Use same variable in different threads
By: koldo on Thu, 09 December 2010 18:26
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Re: Use same variable in different threads
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Re: Use same variable in different threads
By: koldo on Thu, 09 December 2010 22:04
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Re: Use same variable in different threads
By: Didier on Fri, 10 December 2010 00:26
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Re: Use same variable in different threads
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Re: Use same variable in different threads
By: koldo on Fri, 10 December 2010 10:01
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Re: Use same variable in different threads
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Re: Use same variable in different threads
By: koldo on Fri, 10 December 2010 13:19
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Re: Use same variable in different threads
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Re: Use same variable in different threads
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Re: Use same variable in different threads
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Re: Use same variable in different threads
By: Didier on Fri, 10 December 2010 18:50
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Re: Use same variable in different threads
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Re: Use same variable in different threads
By: Didier on Sat, 11 December 2010 23:13
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Re: Use same variable in different threads
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Re: Use same variable in different threads
By: mirek on Sun, 12 December 2010 09:43
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Re: Use same variable in different threads
By: koldo on Sun, 12 December 2010 23:16
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Re: Use same variable in different threads
By: tojocky on Mon, 13 December 2010 11:35
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Re: Use same variable in different threads
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Re: Use same variable in different threads
By: Didier on Mon, 13 December 2010 22:48
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Re: Use same variable in different threads
By: koldo on Tue, 14 December 2010 09:02
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Re: Use same variable in different threads
By: mirek on Sat, 25 December 2010 20:45
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Re: Use same variable in different threads
By: tojocky on Sun, 02 January 2011 15:35
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Re: Use same variable in different threads
By: mirek on Sun, 02 January 2011 18:38
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Re: Use same variable in different threads
By: koldo on Sun, 02 January 2011 19:06
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Re: Use same variable in different threads
By: mirek on Sun, 02 January 2011 22:56
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Re: Use same variable in different threads
By: koldo on Mon, 03 January 2011 09:17
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Re: Use same variable in different threads
By: koldo on Sun, 02 January 2011 01:12
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Re: Use same variable in different threads
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Re: Use same variable in different threads
By: Didier on Sun, 02 January 2011 12:18
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Re: Use same variable in different threads
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