RandomAccessFile closeability.

Alan Bateman Alan.Bateman at Sun.COM
Mon Oct 20 07:38:11 UTC 2008

Paulo Levi wrote:
> Hi a bug, i've been seeing:
> First a simplification:
>  Two different RandomAccessFile objects, inited in "r" mode and
> pointing to the same file appear to be interfering on on their reads
> (concurrent threads). They both manipulate the file pointer i guess,
> but i expected nothing bad to happen, because they are in read mode.
> The real story:
> The library i'm using is more than a "RandomAccessFile", so i'm not
> actually sure the error occurs here or in some static state somewhere.
> I'd like to fix this so its transparent to the clients of the api i'm
> building (me!) so i'd like to find the bug, or if this is a known
> issue i guess i can make a factory + map of live RandomAccessFiles.
> Asking if the situation described above is a known bug of RandomAccessFile?
This does not sound familiar. Are you 100% sure you don't have 
concurrent threads seeking and reading with the same RandomAccessFile 
instance? Do you have a test case that demonstrates the issue?


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