I checked VC 7,
header file for ofstream, destructor is empty, plus if we put this in
multithread environment, it is necessary to ensure close() is executed before
another thread attempts to access same file, unless xml_oarchive’s destructor itself has a mechanism to
close the stream once entire content is written to
stream.
From:
boost-users-bounces@lists.boost.org
[mailto:boost-users-bounces@lists.boost.org] On Behalf Of Robert Ramey
Sent: Saturday, October 22, 2005 8:41
PM
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] When to close
ofstream in XML serialize
Just remove the close().
This will permit the xml_archive destructor to be called while the stream is
still open. The xml destructor adds some final tags to make a valid xml
file.
In following function code,
ofs.close() results in failure to write last end tag of XML archive,
apparently because stream is closed before destructor is executed, so when
do we execute ofs.close() ? ofs.flush does not help either or shell we skip
executing any flush or close and just return from function
?
template<class
T>
void Serialize(const char *
filename)
{
std::ofstream ofs(filename);
assert(ofs.good());
boost::archive::xml_oarchive oa(ofs);
oa << BOOST_SERIALIZATION_NVP(T);
ofs.close();
}
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