Home » U++ Library support » U++ MT-multithreading and servers » Use same variable in different threads
Re: Use same variable in different threads [message #30123 is a reply to message #30122] |
Fri, 10 December 2010 06:49 |
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The question now is, how to program it?
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That is always the question Unfortunatelly the answer is not simple and it depends a lot on what you are trying to achieve...
As Didier pointed out, for simple int compatible variables Atomic* functions are best. For something rarely used (e.g. flag to stop all threads) I ussually use volatile. And fore manipulating larger objects, you should definitely use mutex. The basic approach for mutex might be to lock it everytime before you access the variable that is shared between threads and unlock after you are done with it. I think it is best to have one mutex for each object that is accessed from various threads.
In my experience, the best solution is to avoid inter-thread communication whenever possible Of course, than is definitely not an universal solution...
Honza
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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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