Re: [Boost-users] Boost serialization : Stream error exception

From: Robert Ramey (ramey_at_[hidden])
Date: 2006-08-24 16:43:46

Its not clear whether your using binary, text or ? type
of archives.  Also it would help to know which version
of boost you're using.  The lastest version of boost
in the CVS head (1.35?) use an implementation of
binary archives which bypasses streams in favor of
direct calls to the stream_buffer.  The is measurably
faster.

Of course I have to be suspicious of you stream i/o
re-implementation. Which like all standard library
implementations is much trickier to get right than
first meets the eye.

Other than this I'm not sure what more I can say.

I'm sure this doesn't help much - and I'm sorry
about that.

Robert Ramey

smith smithson wrote:
> I'm trying to use boost serialization to
> serialize/deserialize data to and from a mmap'd file.
> I have my own ostream/istream classes that essentially
> read/write bytes from a mmap'd file. The process works
> fine except on some rare occasions (With different
> objects/number of objects), in which case boost throws
> a "stream error" exception. Any ideas what could
> trigger this? A search of the Boost archives indicated
> other people had the same problem, where the solution
> was "use binary mode when you open the file"... but
> I'm not using a file on disk, I'm using a mmap'd file.
> (As a side note, the mmap file is large enough to hold
> all my data and does not need to be expanded or
> remmap'd etc)
>
> The OS i'm using is Linux.
>
> Thanks for any suggestions...
>
>
>
>
>
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