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

Subject: Re: [Boost-users] [Serialization] Sometimes Fails Reading BinaryFile
From: Robert McCullough (rob_at_[hidden])
Date: 2010-06-16 11:51:51

Hi,  Robert
Thanks for the information.
We cannot use an xml_archive because it is too slow for our application.
I have used an xml_archive in the past for testing, but right now I am
trying to figure out why sometimes I
cannot read the binary_archive which was created at a customer's site.
Thanks, Robert McCullough 

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] [mailto:boost-users-
> bounces_at_[hidden]] On Behalf Of Robert Ramey
> Sent: Wednesday, June 16, 2010 2:22 AM
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] [Serialization] Sometimes Fails Reading
BinaryFile
> 
> try using an xml_archive instead.  This has extra consistency checking and
is
> helpful for spotting errors.
> 
> Robert Ramey
> 
> 
> 
> Robert McCullough wrote:
> >> Hi Steven,
> >>
> >> Answers to your questions:
> >> a) it yields different behavior for the same archive.
> >> b) See attached source LegacyMonitorPersistentData.h
> >> c) See attached source PersistentData.h
> >> d)  I have not tried that.  I will give this a try.
> >> This is what I am testing.
> >> I have this archive file ^Press.dat. that was created once by our
> >> customer. I try to de-serializing using the loadPersistentData()
> >> function and it works sometimes, but about every third try it throw
> >> one of the exceptions.
> >>
> >> Thanks,
> >> Robert
> >>
> >>  > -----Original Message-----
> >>  > From: boost-users-bounces_at_[hidden] [mailto:boost-users-  >
> >> bounces_at_[hidden]] On Behalf Of Steven Watanabe  > Sent:
> >> Tuesday, June 15, 2010 3:44 PM  > To: boost-users_at_[hidden]  >
> >> Subject: Re: [Boost-users] [Serialization] Sometimes Fails Reading
> >> Binary  > File  >  > AMDG  >  > Robert McCullough wrote:
> >>  > > I am using Boost 1.43.0, Linux 2.6.23, gcc version 4.0.0 on a  >
> >> > Freescale PowerPC.
> >>  > >
> >>  > > I am reading  in a serialized binary file using  > >  > >
> >> Ifstream ifs;  > > try  > > {
> >>  > >   Ifs.open(filename.c_str(), iso_base::binary | iso_base::in);
> >>  > >   If(fs.is_open())
> >>  > >   {
> >>  > >     Boost::archive::binary_iarchive ia(ifs);
> >>  > >     ia >> data;
> >>  > >     ifs.close();
> >>  > >   }
> >>  > > } catch (std:exception &e) {
> >>  > >   Ifs.close();
> >>  > > }
> >>  > >
> >>  > > Sometimes it reads the file fine and sometimes it throws one of
> >> the > > following errors.
> >>  > >
> >>  > > invalid_signature, Basic_string::resize, or stream error.
> >>  > >
> >>  > > Does anyone have an idea why sometimes it works and sometimes it
> >> > does  > > not work?
> >>  > >
> >>  >
> >>  > a) Is the behavior consistent?  i.e. does it yield different
> >> behavior for  > different archives, or can it yield different
> >> behavior for the same archive?
> >>  > b) What is data?
> >>  > c) How is the archive created
> >>  > d) Does it help if the archive is destroyed before the stream is
> >> closed? >  > In Christ,  > Steven Watanabe  >  >
> >> _______________________________________________
> >>  > Boost-users mailing list
> >>  > Boost-users_at_[hidden]
> >>  > http://lists.boost.org/mailman/listinfo.cgi/boost-users
> >>
> >
> >
> >
> >> _______________________________________________
> >> Boost-users mailing list
> >> Boost-users_at_[hidden]
> >> http://lists.boost.org/mailman/listinfo.cgi/boost-users
> 
> 
> 
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