Messages in this thread | | | Date | Tue, 19 Nov 2002 12:28:18 +0100 (CET) | From | Krzysztof Benedyczak <> | Subject | Re: [PATCH] unified SysV and POSIX mqueues - complete rewrite |
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Hello,
After some looking into your code, I think there is a bug. Please correct me if I'm wrong.
The problem occur when awake processes which wait for message (or free space). I think that your code will wake them up in random order. POSIX says:
> If more than one thread is waiting to send when space becomes > available in the message queue and the Priority Scheduling option is > supported, then the thread of the highest priority that has been > waiting the longest shall be unblocked to send its message
I've written a test and it shows that my suspects are rather true?
BTW: I've had some problems with your patch when linking kernel - in your main file were used static functions from msg.c?? Maybe my patch (taken from lkml - post date: XI 10) was incomplete? If there is more recent version could you inform me? Thanks.
Regards
K. Benedzyczak
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