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

Subject: Re: [Boost-users] [Serialization] Sometimes Fails Reading BinaryFile
From: Robert Ramey (ramey_at_[hidden])
Date: 2010-06-16 02:21:51

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
>>
>
>
>
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