On Sun, Sep 14, 2014 at 7:28 AM, Roadstar Runner <redstripe...@gmail.com> wrote:
> But if thee is no default owner for the resource, then the system could be > locked because module 2 will never get the resource. I was under the > impression that if a call to Resouce.request() returns SUCCESS , then > either granted or requested will have to be signaled so that the resource > is actually shared. > It is my understanding that if Resource.request() returns SUCCESS than one is guaranteed that .granted will eventually be signalled. (Not either .granted or .requested). .requested will only be delivered after a module owns a resource and another module requests the resource. Also if module2 has the resource, releases it and immediately requests it > again before module 1 is granted the resource...we will lock up the system > I have to verify this (currently working on it), but what currently happens (with FCFSArbiter) is Module2 will be granted the resource again. So the system doesn't lock up but the proper behaviour doesn't occur. Queue discipline isn't properly honored. -- Eric B. Decker Senior (over 50 :-) Researcher
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