optimal_buffer_size
    The function template optimal_buffer_size returns the size of the character buffer which is allocated for a Filter or Device by library streams, stream buffers and chains if no buffer size is explicitly specified.
<boost/iostreams/optimal_buffer_size.hpp><boost/iostreams/operations.hpp>namespace boost { namespace iostreams { template<typename T> std::streamsize optimal_buffer_size(T& t); } } // End namespace boost::io
| T | - | A model of Filter or Device. | 
template<typename T> std::streamsize optimal_buffer_size(T& t);
The semantics of optimal_buffer_size depends on the category of T as follows:
| category_of<T>::type | semantics | 
|---|---|
| convertible to optimally_buffered_tag | Returns t.optimal_buffer_size(). | 
| convertible to filter_tagbut not tooptimally_buffered_tag | Returns default_filter_buffer_size. | 
| otherwise | Returns default_device_buffer_size. | 
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© Copyright 2004-2007 Jonathan Turkanis
Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)