Re: [Boost-users] [Serialization] Sometimes Fails Reading BinaryFile

Subject: Re: [Boost-users] [Serialization] Sometimes Fails Reading BinaryFile
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-06-17 11:27:45

AMDG

Robert Ramey wrote:
> What could this mean?
>
> That multiple threads read/write to the same open archive? Of
> course this could never make sense.
>   

In the given code, a new ifstream and archive are created for reading.

> That multiple archives are being used simultaneously by different
> threads?  As far as I know, subject to the following, there should
> be no problem.
>
> a) If serialization code for some class is in a DLL and this
> DLL is dynamically loaded/unloaded while some other archive
> is open and being used by a separate thread, there could
> be a problem.  This would be due to the fact that there is
> global list of types which is updated when a DLL is loaded
> and/or unloaded.
>   

It's blowing up when trying to read the serialization header.
I don't think this has anything to do with the type
being serialized.

> b) xml_iarchives depend upon spirit which is not guarenteed
> thread-safe.  I looked at the spirit code and believe that I
> selected that part which was thread-safe.  But at least one
> user noted an issue with loading multiple xml_iarchives from
> separate threads.
>   

It's a binary archive.

In Christ,
Steven Watanabe