template<typename data_type> bool fetch( data_type& t, std::function<bool( std::istream&, data_type& )> deserializer = &data_type::restore ) {
std::vector< adfs::char_t > iobuf( size() );
if ( read( iobuf.size(), iobuf.data() ) == iobuf.size() ) {
boost::iostreams::basic_array_source< char > device( iobuf.data(), iobuf.size() );
boost::iostreams::stream< boost::iostreams::basic_array_source< char > > st( device );
return deserializer( st, t );
}
return false;
}
unique_ptr<IOBuf> IOBuf::cloneOne() const {
if (sharedInfo_) {
flags_ |= kFlagMaybeShared;
}
unique_ptr<IOBuf> iobuf(new IOBuf(static_cast<ExtBufTypeEnum>(type_),
flags_, buf_, capacity_,
data_, length_,
sharedInfo_));
if (sharedInfo_) {
sharedInfo_->refcount.fetch_add(1, std::memory_order_acq_rel);
}
return iobuf;
}