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 //////////////////////////////////////////////////////////////////////////////
 //
 // (C) Copyright Ion Gaztanaga 2005-2012. 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)
 //
 // See http://www.boost.org/libs/interprocess for documentation.
 //
 //////////////////////////////////////////////////////////////////////////////
 //
 // This file comes from SGI's sstream file. Modified by Ion Gaztanaga 2005-2012.
 // Changed internal SGI string to a generic, templatized vector. Added efficient
 // internal buffer get/set/swap functions, so that we can obtain/establish the
 // internal buffer without any reallocation or copy. Kill those temporaries!
 ///////////////////////////////////////////////////////////////////////////////
 /*
  * Copyright (c) 1998
  * Silicon Graphics Computer Systems, Inc.
  *
  * Permission to use, copy, modify, distribute and sell this software
  * and its documentation for any purpose is hereby granted without fee,
  * provided that the above copyright notice appear in all copies and
  * that both that copyright notice and this permission notice appear
  * in supporting documentation.  Silicon Graphics makes no
  * representations about the suitability of this software for any
  * purpose.  It is provided "as is" without express or implied warranty.
  */
 
 //!\file
 //!This file defines basic_vectorbuf, basic_ivectorstream,
 //!basic_ovectorstream, and basic_vectorstreamclasses.  These classes
 //!represent streamsbufs and streams whose sources or destinations are
 //!STL-like vectors that can be swapped with external vectors to avoid
 //!unnecessary allocations/copies.
 
 #ifndef BOOST_INTERPROCESS_VECTORSTREAM_HPP
 #define BOOST_INTERPROCESS_VECTORSTREAM_HPP
 
 #ifndef BOOST_CONFIG_HPP
 #  include <boost/config.hpp>
 #endif
 0043 ">#
 #if defined(BOOST_HAS_PRAGMA_ONCE)
 #  pragma once
 #endif
 
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/detail/workaround.hpp>
 
 #include <iosfwd>
 #include <ios>
 #include <istream>
 #include <ostream>
 #include <string>    // char traits
 #include <climits>   // INT_MAX
 #include <cstddef>   // ptrdiff_t
 #include <boost/interprocess/interprocess_fwd.hpp>
 #include <boost/assert.hpp>
 
 namespace boost {  namespace interprocess {
 
 //!A streambuf class that controls the transmission of elements to and from
 //!a basic_ivectorstream, basic_ovectorstream or basic_vectorstream.
 //!It holds a character vector specified by CharVector template parameter
 //!as its formatting buffer. The vector must have contiguous storage, like
 //!std::vector, boost::interprocess::vector or boost::interprocess::basic_string
 template <class CharVector, class CharTraits>
 class basic_vectorbuf
    : public std::basic_streambuf<typename CharVector::value_type, CharTraits>
 {
    public:
    typedef CharVector                        vector_type;
    typedef typename CharVector::value_type   char_type;
    typedef typename CharTraits::int_type     int_type;
    typedef typename CharTraits::pos_type     pos_type;
    typedef typename CharTraits::off_type     off_type;
    typedef CharTraits                        traits_type;
 
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    private:
    typedef std::basic_streambuf<char_type, traits_type> base_t;
 
    basic_vectorbuf(const basic_vectorbuf&);
    basic_vectorbuf & operator =(const basic_vectorbuf&);
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 
    public:
    //!Constructor. Throws if vector_type default
    //!constructor throws.
    explicit basic_vectorbuf(std::ios_base::openmode mode
                               = std::ios_base::in | std::ios_base::out)
       :  base_t(), m_mode(mode)
    {  this->initialize_pointers();   }
 
    //!Constructor. Throws if
    //!vector_type(const VectorParameter &param) throws.
    template<class VectorParameter>
    explicit basic_vectorbuf(const VectorParameter &param,
                             std::ios_base::openmode mode
                                  = std::ios_base::in | std::ios_base::out)
       :  base_t(), m_mode(mode), m_vect(param)
    {  this->initialize_pointers();   }
 
    public:
 
    //!Swaps the underlying vector with the passed vector.
    //!This function resets the read/write position in the stream.
    //!Does not throw.
    void swap_vector(vector_type &vect)
    {
       if (this->m_mode & std::ios_base::out){
          //Update high water if necessary
          //And resize vector to remove extra size
          if (mp_high_water < base_t::pptr()){
             //Restore the vector's size if necessary
             mp_high_water = base_t::pptr();
          }
          //This does not reallocate
          m_vect.resize(std::size_t(mp_high_water - (m_vect.size() ? &m_vect[0] : 0)));
       }
       //Now swap vector
       m_vect.swap(vect);
       this->initialize_pointers();
    }
 
    //!Returns a const reference to the internal vector.
    //!Does not throw.
    const vector_type &vector() const
    {
       if (this->m_mode & std::ios_base::out){
          if (mp_high_water < base_t::pptr()){
             //Restore the vector's size if necessary
             mp_high_water = base_t::pptr();
          }
          //This shouldn't reallocate
          typedef typename vector_type::size_type size_type;
          char_type *old_ptr = base_t::pbase();
          size_type high_pos = size_type(mp_high_water-old_ptr);
          if(m_vect.size() > high_pos){
             m_vect.resize(high_pos);
             //But we must update end write pointer because vector size is now shorter
             off_type old_pos = base_t::pptr() - base_t::pbase();
             const_cast<basic_vectorbuf*>(this)->base_t::setp(old_ptr, old_ptr + high_pos);
             const_cast<basic_vectorbuf*>(this)->pbump(old_pos);
          }
       }
       return m_vect;
    }
 
    //!Preallocates memory from the internal vector.
    //!Resets the stream to the first position.
    //!Throws if the internals vector's memory allocation throws.
    void reserve(typename vector_type::size_type size)
    {
       if (this->m_mode & std::ios_base::out && size > m_vect.size()){
          off_type write_pos = base_t::pptr() - base_t::pbase();
          off_type read_pos  = base_t::gptr() - base_t::eback();
          //Now update pointer data
          m_vect.reserve(size);
          this->initialize_pointers();
          this->pbump(write_pos);
          if(this->m_mode & std::ios_base::in){
             base_t::setg(base_t::eback(), base_t::eback() + read_pos, base_t::egptr());
          }
       }
    }
 
    //!Calls clear() method of the internal vector.
    //!Resets the stream to the first position.
    void clear()
    {  m_vect.clear();   this->initialize_pointers();   }
 
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    private:
    //Maximizes high watermark to the initial vector size,
    //initializes read and write iostream buffers to the capacity
    //and resets stream positions
    void initialize_pointers()
    {
       // The initial read position is the beginning of the vector.
       if(!(m_mode & std::ios_base::out)){
          if(m_vect.empty()){
             this->setg(0, 0, 0);
          }
          else{
             this->setg(&m_vect[0], &m_vect[0], &m_vect[0] + m_vect.size());
          }
       }
 
       // The initial write position is the beginning of the vector.
       if(m_mode & std::ios_base::out){
          //First get real size
          off_type real_size = static_cast<off_type>(m_vect.size());
          //Then maximize size for high watermarking
          m_vect.resize(m_vect.capacity());
          BOOST_ASSERT(m_vect.size() == m_vect.capacity());
          //Set high watermarking with the expanded size
          mp_high_water = m_vect.size() ? (&m_vect[0] + real_size) : 0;
          //Now set formatting pointers
          if(m_vect.empty()){
             this->setp(0, 0);
             if(m_mode & std::ios_base::in)
                this->setg(0, 0, 0);
          }
          else{
             char_type *p = &m_vect[0];
             this->setp(p, p + m_vect.size());
             if(m_mode & std::ios_base::in)
                this->setg(p, p, p + real_size);
          }
          if (m_mode & (std::ios_base::app | std::ios_base::ate)){
             this->pbump(real_size);
          }
       }
    }
 
    // LWG255-inspired variant of base_t::pbump that takes a streamoff instead of an int.
    void pbump(off_type delta) {
       if (delta > INT_MAX) {
             for (off_type d = delta / INT_MAX; d > 0; d--)
                 base_t::pbump(INT_MAX);
             delta %= INT_MAX;
       }
       base_t::pbump((int)delta);
    }
 
    protected:
    virtual int_type underflow() BOOST_OVERRIDE
    {
       if (base_t::gptr() == 0)
          return CharTraits::eof();
       if(m_mode & std::ios_base::out){
          if (mp_high_water < base_t::pptr())
             mp_high_water = base_t::pptr();
          if (base_t::egptr() < mp_high_water)
             base_t::setg(base_t::eback(), base_t::gptr(), mp_high_water);
       }
       if (base_t::gptr() < base_t::egptr())
          return CharTraits::to_int_type(*base_t::gptr());
       return CharTraits::eof();
    }
 
    virtual int_type pbackfail(int_type c = CharTraits::eof()) BOOST_OVERRIDE
    {
       if(this->gptr() != this->eback()) {
          if(!CharTraits::eq_int_type(c, CharTraits::eof())) {
             if(CharTraits::eq(CharTraits::to_char_type(c), this->gptr()[-1])) {
                this->gbump(-1);
                return c;
             }
             else if(m_mode & std::ios_base::out) {
                this->gbump(-1);
                *this->gptr() = CharTraits::to_char_type(c);
                return c;
             }
             else
                return CharTraits::eof();
          }
          else {
             this->gbump(-1);
             return CharTraits::not_eof(c);
          }
       }
       else
          return CharTraits::eof();
    }
 
    virtual int_type overflow(int_type c = CharTraits::eof()) BOOST_OVERRIDE
    {
       if(m_mode & std::ios_base::out) {
          if(!CharTraits::eq_int_type(c, CharTraits::eof())) {
                typedef typename vector_type::difference_type dif_t;
                //The new output position is the previous one plus one
                //because 'overflow' requires putting 'c' on the buffer
                dif_t new_outpos = base_t::pptr() - base_t::pbase() + 1;
                //Adjust high water if necessary
                dif_t hipos = mp_high_water - base_t::pbase();
                if (hipos < new_outpos)
                   hipos = new_outpos;
                //Insert the new data
                m_vect.push_back(CharTraits::to_char_type(c));
                m_vect.resize(m_vect.capacity());
                BOOST_ASSERT(m_vect.size() == m_vect.capacity());
                char_type* p = const_cast<char_type*>(&m_vect[0]);
                //A reallocation might have happened, update pointers
                base_t::setp(p, p + (dif_t)m_vect.size());
                mp_high_water = p + hipos;
                if (m_mode & std::ios_base::in)
                   base_t::setg(p, p + (base_t::gptr() - base_t::eback()), mp_high_water);
                //Update write position to the old position + 1
                this->pbump((off_type)new_outpos);
                return c;
          }
          else  // c is EOF, so we don't have to do anything
             return CharTraits::not_eof(c);
       }
       else     // Overflow always fails if it's read-only.
          return CharTraits::eof();
    }
 
    virtual pos_type seekoff(off_type off, std::ios_base::seekdir dir,
                               std::ios_base::openmode mode
                                  = std::ios_base::in | std::ios_base::out) BOOST_OVERRIDE
    {
       //Get seek mode
       bool in(0 != (mode & std::ios_base::in)), out(0 != (mode & std::ios_base::out));
       //Test for logic errors
       if(!in & !out)
          return pos_type(off_type(-1));
       else if((in && out) && (dir == std::ios_base::cur))
          return pos_type(off_type(-1));
       else if((in  && (!(m_mode & std::ios_base::in) || (off != 0 && this->gptr() == 0) )) ||
                (out && (!(m_mode & std::ios_base::out) || (off != 0 && this->pptr() == 0))))
          return pos_type(off_type(-1));
 
       off_type newoff;
       //Just calculate the end of the stream. If the stream is read-only
       //the limit is the size of the vector. Otherwise, the high water mark
       //will mark the real size.
       off_type limit;
       if(m_mode & std::ios_base::out){
          //Update high water marking because pptr() is going to change and it might
          //have been updated since last overflow()
          if(mp_high_water < base_t::pptr())
             mp_high_water = base_t::pptr();
          //Update read limits in case high water mark was changed
          if(m_mode & std::ios_base::in){
             if (base_t::egptr() < mp_high_water)
                base_t::setg(base_t::eback(), base_t::gptr(), mp_high_water);
          }
          limit = static_cast<off_type>(mp_high_water - base_t::pbase());
       }
       else{
          limit = static_cast<off_type>(m_vect.size());
       }
 
       switch(dir) {
          case std::ios_base::beg:
             newoff = 0;
          break;
          case std::ios_base::end:
             newoff = limit;
          break;
          case std::ios_base::cur:
             newoff = in ? static_cast<std::streamoff>(this->gptr() - this->eback())
                         : static_cast<std::streamoff>(this->pptr() - this->pbase());
          break;
          default:
             return pos_type(off_type(-1));
       }
 
       newoff += off;
 
       if (newoff < 0 || newoff > limit)
          return pos_type(-1);
       if (m_mode & std::ios_base::app && mode & std::ios_base::out && newoff != limit)
          return pos_type(-1);
       //This can reassign pointers
       //if(m_vect.size() != m_vect.capacity())
          //this->initialize_pointers();
       if (in)
          base_t::setg(base_t::eback(), base_t::eback() + newoff, base_t::egptr());
       if (out){
          base_t::setp(base_t::pbase(), base_t::epptr());
          this->pbump(newoff);
       }
       return pos_type(newoff);
    }
 
    virtual pos_type seekpos(pos_type pos, std::ios_base::openmode mode
                                  = std::ios_base::in | std::ios_base::out) BOOST_OVERRIDE
    {  return seekoff(pos - pos_type(off_type(0)), std::ios_base::beg, mode);  }
 
    private:
    std::ios_base::openmode m_mode;
    mutable vector_type     m_vect;
    mutable char_type*      mp_high_water;
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 };
 
 //!A basic_istream class that holds a character vector specified by CharVector
 //!template parameter as its formatting buffer. The vector must have
 //!contiguous storage, like std::vector, boost::interprocess::vector or
 //!boost::interprocess::basic_string
 template <class CharVector, class CharTraits>
 class basic_ivectorstream
    : public std::basic_istream<typename CharVector::value_type, CharTraits>
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    , private basic_vectorbuf<CharVector, CharTraits>
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 {
    public:
    typedef CharVector                                                   vector_type;
    typedef typename std::basic_ios
       <typename CharVector::value_type, CharTraits>::char_type          char_type;
    typedef typename std::basic_ios<char_type, CharTraits>::int_type     int_type;
    typedef typename std::basic_ios<char_type, CharTraits>::pos_type     pos_type;
    typedef typename std::basic_ios<char_type, CharTraits>::off_type     off_type;
    typedef typename std::basic_ios<char_type, CharTraits>::traits_type  traits_type;
 
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    private:
    typedef basic_vectorbuf<CharVector, CharTraits>    vectorbuf_t;
    typedef std::basic_ios<char_type, CharTraits>      basic_ios_t;
    typedef std::basic_istream<char_type, CharTraits>  base_t;
 
    vectorbuf_t &       get_buf()      {  return *this;  }
    const vectorbuf_t & get_buf() const{  return *this;  }
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 
    public:
 
    //!Constructor. Throws if vector_type default
    //!constructor throws.
    basic_ivectorstream(std::ios_base::openmode mode = std::ios_base::in)
       : base_t(0) //Initializes first the base class to safely init the virtual basic_ios base
                   //(via basic_ios::init() call in base_t's constructor) without the risk of a
                   //previous throwing vectorbuf constructor. Set the streambuf after risk has gone.
       , vectorbuf_t(mode | std::ios_base::in)
    {  this->base_t::rdbuf(&get_buf()); }
 
    //!Constructor. Throws if vector_type(const VectorParameter &param)
    //!throws.
    template<class VectorParameter>
    basic_ivectorstream(const VectorParameter &param,
                        std::ios_base::openmode mode = std::ios_base::in)
       : vectorbuf_t(param, mode | std::ios_base::in)
          //basic_ios_t() is constructed uninitialized as virtual base
          //and initialized inside base_t calling basic_ios::init()
       , base_t(&get_buf())
    {}
 
    public:
    //!Returns the address of the stored
    //!stream buffer.
    basic_vectorbuf<CharVector, CharTraits>* rdbuf() const
    { return const_cast<basic_vectorbuf<CharVector, CharTraits>*>(&get_buf()); }
 
    //!Swaps the underlying vector with the passed vector.
    //!This function resets the read position in the stream.
    //!Does not throw.
    void swap_vector(vector_type &vect)
    {  get_buf().swap_vector(vect);   }
 
    //!Returns a const reference to the internal vector.
    //!Does not throw.
    const vector_type &vector() const
    {  return get_buf().vector();   }
 
    //!Calls reserve() method of the internal vector.
    //!Resets the stream to the first position.
    //!Throws if the internals vector's reserve throws.
    void reserve(typename vector_type::size_type size)
    {  get_buf().reserve(size);   }
 
    //!Calls clear() method of the internal vector.
    //!Resets the stream to the first position.
    void clear()
    {  get_buf().clear();   }
 };
 
 //!A basic_ostream class that holds a character vector specified by CharVector
 //!template parameter as its formatting buffer. The vector must have
 //!contiguous storage, like std::vector, boost::interprocess::vector or
 //!boost::interprocess::basic_string
 template <class CharVector, class CharTraits>
 class basic_ovectorstream
    : public std::basic_ostream<typename CharVector::value_type, CharTraits>
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    , private basic_vectorbuf<CharVector, CharTraits>
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 {
    public:
    typedef CharVector                                                   vector_type;
    typedef typename std::basic_ios
       <typename CharVector::value_type, CharTraits>::char_type          char_type;
    typedef typename std::basic_ios<char_type, CharTraits>::int_type     int_type;
    typedef typename std::basic_ios<char_type, CharTraits>::pos_type     pos_type;
    typedef typename std::basic_ios<char_type, CharTraits>::off_type     off_type;
    typedef typename std::basic_ios<char_type, CharTraits>::traits_type  traits_type;
 
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    private:
    typedef basic_vectorbuf<CharVector, CharTraits>    vectorbuf_t;
    typedef std::basic_ios<char_type, CharTraits>      basic_ios_t;
    typedef std::basic_ostream<char_type, CharTraits>  base_t;
 
    vectorbuf_t &       get_buf()      {  return *this;  }
    const vectorbuf_t & get_buf()const {  return *this;  }
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 
    public:
    //!Constructor. Throws if vector_type default
    //!constructor throws.
    basic_ovectorstream(std::ios_base::openmode mode = std::ios_base::out)
       : base_t(0) //Initializes first the base class to safely init the virtual basic_ios base
                   //(via basic_ios::init() call in base_t's constructor) without the risk of a
                   //previous throwing vectorbuf constructor. Set the streambuf after risk has gone.
       , vectorbuf_t(mode | std::ios_base::out)
    {  this->base_t::rdbuf(&get_buf()); }
 
    //!Constructor. Throws if vector_type(const VectorParameter &param)
    //!throws.
    template<class VectorParameter>
    basic_ovectorstream(const VectorParameter &param,
                         std::ios_base::openmode mode = std::ios_base::out)
       : base_t(0) //Initializes first the base class to safely init the virtual basic_ios base
                   //(via basic_ios::init() call in base_t's constructor) without the risk of a
                   //previous throwing vectorbuf constructor. Set the streambuf after risk has gone.
       , vectorbuf_t(param, mode | std::ios_base::out)
    {  this->base_t::rdbuf(&get_buf()); }
 
    public:
    //!Returns the address of the stored
    //!stream buffer.
    basic_vectorbuf<CharVector, CharTraits>* rdbuf() const
    { return const_cast<basic_vectorbuf<CharVector, CharTraits>*>(&get_buf()); }
 
    //!Swaps the underlying vector with the passed vector.
    //!This function resets the write position in the stream.
    //!Does not throw.
    void swap_vector(vector_type &vect)
    {  get_buf().swap_vector(vect);   }
 
    //!Returns a const reference to the internal vector.
    //!Does not throw.
    const vector_type &vector() const
    {  return get_buf().vector();   }
 
    //!Calls reserve() method of the internal vector.
    //!Resets the stream to the first position.
    //!Throws if the internals vector's reserve throws.
    void reserve(typename vector_type::size_type size)
    {  get_buf().reserve(size);   }
 };
 
 //!A basic_iostream class that holds a character vector specified by CharVector
 //!template parameter as its formatting buffer. The vector must have
 //!contiguous storage, like std::vector, boost::interprocess::vector or
 //!boost::interprocess::basic_string
 template <class CharVector, class CharTraits>
 class basic_vectorstream
    : public std::basic_iostream<typename CharVector::value_type, CharTraits>
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    , private basic_vectorbuf<CharVector, CharTraits>
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 {
    public:
    typedef CharVector                                                   vector_type;
    typedef typename std::basic_ios
       <typename CharVector::value_type, CharTraits>::char_type          char_type;
    typedef typename std::basic_ios<char_type, CharTraits>::int_type     int_type;
    typedef typename std::basic_ios<char_type, CharTraits>::pos_type     pos_type;
    typedef typename std::basic_ios<char_type, CharTraits>::off_type     off_type;
    typedef typename std::basic_ios<char_type, CharTraits>::traits_type  traits_type;
 
    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
    private:
    typedef basic_vectorbuf<CharVector, CharTraits>    vectorbuf_t;
    typedef std::basic_ios<char_type, CharTraits>      basic_ios_t;
    typedef std::basic_iostream<char_type, CharTraits> base_t;
 
    vectorbuf_t &       get_buf()      {  return *this;  }
    const vectorbuf_t & get_buf() const{  return *this;  }
    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 
    public:
    //!Constructor. Throws if vector_type default
    //!constructor throws.
    basic_vectorstream(std::ios_base::openmode mode
                       = std::ios_base::in | std::ios_base::out)
       : base_t(0) //Initializes first the base class to safely init the virtual basic_ios base
                   //(via basic_ios::init() call in base_t's constructor) without the risk of a
                   //previous throwing vectorbuf constructor. Set the streambuf after risk has gone.
       , vectorbuf_t(mode)
    {  this->base_t::rdbuf(&get_buf()); }
 
    //!Constructor. Throws if vector_type(const VectorParameter &param)
    //!throws.
    template<class VectorParameter>
    basic_vectorstream(const VectorParameter &param, std::ios_base::openmode mode
                       = std::ios_base::in | std::ios_base::out)
       : base_t(0) //Initializes first the base class to safely init the virtual basic_ios base
                   //(via basic_ios::init() call in base_t's constructor) without the risk of a
                   //previous throwing vectorbuf constructor. Set the streambuf after risk has gone.
       , vectorbuf_t(param, mode)
    {  this->base_t::rdbuf(&get_buf()); }
 
    public:
    //Returns the address of the stored stream buffer.
    basic_vectorbuf<CharVector, CharTraits>* rdbuf() const
    { return const_cast<basic_vectorbuf<CharVector, CharTraits>*>(&get_buf()); }
 
    //!Swaps the underlying vector with the passed vector.
    //!This function resets the read/write position in the stream.
    //!Does not throw.
    void swap_vector(vector_type &vect)
    {  get_buf().swap_vector(vect);   }
 
    //!Returns a const reference to the internal vector.
    //!Does not throw.
    const vector_type &vector() const
    {  return get_buf().vector();   }
 
    //!Calls reserve() method of the internal vector.
    //!Resets the stream to the first position.
    //!Throws if the internals vector's reserve throws.
    void reserve(typename vector_type::size_type size)
    {  get_buf().reserve(size);   }
 
    //!Calls clear() method of the internal vector.
    //!Resets the stream to the first position.
    void clear()
    {  get_buf().clear();   }
 };
 
 //Some typedefs to simplify usage
 //!
 //!typedef basic_vectorbuf<std::vector<char> >        vectorbuf;
 //!typedef basic_vectorstream<std::vector<char> >     vectorstream;
 //!typedef basic_ivectorstream<std::vector<char> >    ivectorstream;
 //!typedef basic_ovectorstream<std::vector<char> >    ovectorstream;
 //!
 //!typedef basic_vectorbuf<std::vector<wchar_t> >     wvectorbuf;
 //!typedef basic_vectorstream<std::vector<wchar_t> >  wvectorstream;
 //!typedef basic_ivectorstream<std::vector<wchar_t> > wivectorstream;
 //!typedef basic_ovectorstream<std::vector<wchar_t> > wovectorstream;
 
 }} //namespace boost {  namespace interprocess {
 
 #include <boost/interprocess/detail/config_end.hpp>
 
 #endif /* BOOST_INTERPROCESS_VECTORSTREAM_HPP */

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