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+// Implementation of the circular buffer adaptor.
+
+// Copyright (c) 2003-2008 Jan Gaspar
+
+// Use, modification, and distribution is subject to 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)
+
+#if !defined(BOOST_CIRCULAR_BUFFER_SPACE_OPTIMIZED_HPP)
+#define BOOST_CIRCULAR_BUFFER_SPACE_OPTIMIZED_HPP
+
+#if defined(_MSC_VER) && _MSC_VER >= 1200
+ #pragma once
+#endif
+
+#include <boost/type_traits/is_same.hpp>
+#include <boost/detail/workaround.hpp>
+
+namespace boost {
+
+/*!
+ \class circular_buffer_space_optimized
+ \brief Space optimized circular buffer container adaptor.
+
+ For detailed documentation of the space_optimized_circular_buffer visit:
+ http://www.boost.org/libs/circular_buffer/doc/space_optimized.html
+*/
+template <class T, class Alloc>
+class circular_buffer_space_optimized :
+/*! \cond */
+#if BOOST_CB_ENABLE_DEBUG
+public
+#endif
+/*! \endcond */
+circular_buffer<T, Alloc> {
+public:
+// Typedefs
+
+ typedef typename circular_buffer<T, Alloc>::value_type value_type;
+ typedef typename circular_buffer<T, Alloc>::pointer pointer;
+ typedef typename circular_buffer<T, Alloc>::const_pointer const_pointer;
+ typedef typename circular_buffer<T, Alloc>::reference reference;
+ typedef typename circular_buffer<T, Alloc>::const_reference const_reference;
+ typedef typename circular_buffer<T, Alloc>::size_type size_type;
+ typedef typename circular_buffer<T, Alloc>::difference_type difference_type;
+ typedef typename circular_buffer<T, Alloc>::allocator_type allocator_type;
+ typedef typename circular_buffer<T, Alloc>::const_iterator const_iterator;
+ typedef typename circular_buffer<T, Alloc>::iterator iterator;
+ typedef typename circular_buffer<T, Alloc>::const_reverse_iterator const_reverse_iterator;
+ typedef typename circular_buffer<T, Alloc>::reverse_iterator reverse_iterator;
+ typedef typename circular_buffer<T, Alloc>::array_range array_range;
+ typedef typename circular_buffer<T, Alloc>::const_array_range const_array_range;
+ typedef typename circular_buffer<T, Alloc>::param_value_type param_value_type;
+ typedef typename circular_buffer<T, Alloc>::return_value_type return_value_type;
+
+ //! Capacity controller of the space optimized circular buffer.
+ /*!
+ <p><pre>
+class capacity_control {
+ size_type m_capacity;
+ size_type m_min_capacity;
+public:
+ capacity_control(size_type capacity, size_type min_capacity = 0) : m_capacity(capacity), m_min_capacity(min_capacity) {};
+ size_type %capacity() const { return m_capacity; }
+ size_type min_capacity() const { return m_min_capacity; }
+ operator size_type() const { return m_capacity; }
+};</pre></p>
+ \pre <code>capacity >= min_capacity</code>
+ <p>The <code>capacity()</code> represents the capacity of the <code>circular_buffer_space_optimized</code> and
+ the <code>min_capacity()</code> determines the minimal allocated size of its internal buffer.</p>
+ <p>The converting constructor of the <code>capacity_control</code> allows implicit conversion from
+ <code>size_type</code>-like types which ensures compatibility of creating an instance of the
+ <code>circular_buffer_space_optimized</code> with other STL containers. On the other hand the operator
+ <code>%size_type()</code> provides implicit conversion to the <code>size_type</code> which allows to treat the
+ capacity of the <code>circular_buffer_space_optimized</code> the same way as in the
+ <code><a href="circular_buffer.html">circular_buffer</a></code>.</p>
+ */
+ typedef cb_details::capacity_control<size_type> capacity_type;
+
+// Inherited
+
+ using circular_buffer<T, Alloc>::get_allocator;
+ using circular_buffer<T, Alloc>::begin;
+ using circular_buffer<T, Alloc>::end;
+ using circular_buffer<T, Alloc>::rbegin;
+ using circular_buffer<T, Alloc>::rend;
+ using circular_buffer<T, Alloc>::at;
+ using circular_buffer<T, Alloc>::front;
+ using circular_buffer<T, Alloc>::back;
+ using circular_buffer<T, Alloc>::array_one;
+ using circular_buffer<T, Alloc>::array_two;
+ using circular_buffer<T, Alloc>::linearize;
+ using circular_buffer<T, Alloc>::is_linearized;
+ using circular_buffer<T, Alloc>::rotate;
+ using circular_buffer<T, Alloc>::size;
+ using circular_buffer<T, Alloc>::max_size;
+ using circular_buffer<T, Alloc>::empty;
+
+#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
+ reference operator [] (size_type n) { return circular_buffer<T, Alloc>::operator[](n); }
+ return_value_type operator [] (size_type n) const { return circular_buffer<T, Alloc>::operator[](n); }
+#else
+ using circular_buffer<T, Alloc>::operator[];
+#endif
+
+private:
+// Member variables
+
+ //! The capacity controller of the space optimized circular buffer.
+ capacity_type m_capacity_ctrl;
+
+public:
+// Overridden
+
+ //! Is the <code>circular_buffer_space_optimized</code> full?
+ /*!
+ \return <code>true</code> if the number of elements stored in the <code>circular_buffer_space_optimized</code>
+ equals the capacity of the <code>circular_buffer_space_optimized</code>; <code>false</code> otherwise.
+ \throws Nothing.
+ \par Exception Safety
+ No-throw.
+ \par Iterator Invalidation
+ Does not invalidate any iterators.
+ \par Complexity
+ Constant (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>empty()</code>
+ */
+ bool full() const { return m_capacity_ctrl == size(); }
+
+ /*! \brief Get the maximum number of elements which can be inserted into the
+ <code>circular_buffer_space_optimized</code> without overwriting any of already stored elements.
+ \return <code>capacity().%capacity() - size()</code>
+ \throws Nothing.
+ \par Exception Safety
+ No-throw.
+ \par Iterator Invalidation
+ Does not invalidate any iterators.
+ \par Complexity
+ Constant (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>capacity()</code>, <code>size()</code>, <code>max_size()</code>
+ */
+ size_type reserve() const { return m_capacity_ctrl - size(); }
+
+ //! Get the capacity of the <code>circular_buffer_space_optimized</code>.
+ /*!
+ \return The capacity controller representing the maximum number of elements which can be stored in the
+ <code>circular_buffer_space_optimized</code> and the minimal allocated size of the internal buffer.
+ \throws Nothing.
+ \par Exception Safety
+ No-throw.
+ \par Iterator Invalidation
+ Does not invalidate any iterators.
+ \par Complexity
+ Constant (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>reserve()</code>, <code>size()</code>, <code>max_size()</code>,
+ <code>set_capacity(const capacity_type&)</code>
+ */
+ const capacity_type& capacity() const { return m_capacity_ctrl; }
+
+#if defined(BOOST_CB_TEST)
+
+ // Return the current capacity of the adapted circular buffer.
+ /*
+ \note This method is not intended to be used directly by the user.
+ It is defined only for testing purposes.
+ */
+ size_type internal_capacity() const { return circular_buffer<T, Alloc>::capacity(); }
+
+#endif // #if defined(BOOST_CB_TEST)
+
+ /*! \brief Change the capacity (and the minimal guaranteed amount of allocated memory) of the
+ <code>circular_buffer_space_optimized</code>.
+ \post <code>capacity() == capacity_ctrl \&\& size() \<= capacity_ctrl.capacity()</code><br><br>
+ If the current number of elements stored in the <code>circular_buffer_space_optimized</code> is greater
+ than the desired new capacity then number of <code>[size() - capacity_ctrl.capacity()]</code> <b>last</b>
+ elements will be removed and the new size will be equal to <code>capacity_ctrl.capacity()</code>.<br><br>
+ If the current number of elements stored in the <code>circular_buffer_space_optimized</code> is lower
+ than the new capacity then the amount of allocated memory in the internal buffer may be accommodated as
+ necessary but it will never drop below <code>capacity_ctrl.min_capacity()</code>.
+ \param capacity_ctrl The new capacity controller.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Strong.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in <code>min[size(), capacity_ctrl.%capacity()]</code>).
+ \note To explicitly clear the extra allocated memory use the <b>shrink-to-fit</b> technique:<br><br>
+ <code>%boost::%circular_buffer_space_optimized\<int\> cb(1000);<br>
+ ...<br>
+ %boost::%circular_buffer_space_optimized\<int\>(cb).swap(cb);</code><br><br>
+ For more information about the shrink-to-fit technique in STL see
+ <a href="http://www.gotw.ca/gotw/054.htm">http://www.gotw.ca/gotw/054.htm</a>.
+ \sa <code>rset_capacity(const capacity_type&)</code>,
+ <code>\link resize() resize(size_type, const_reference)\endlink</code>
+ */
+ void set_capacity(const capacity_type& capacity_ctrl) {
+ m_capacity_ctrl = capacity_ctrl;
+ if (capacity_ctrl < size()) {
+ iterator e = end();
+ circular_buffer<T, Alloc>::erase(e - (size() - capacity_ctrl), e);
+ }
+ adjust_min_capacity();
+ }
+
+ //! Change the size of the <code>circular_buffer_space_optimized</code>.
+ /*!
+ \post <code>size() == new_size \&\& capacity().%capacity() >= new_size</code><br><br>
+ If the new size is greater than the current size, copies of <code>item</code> will be inserted at the
+ <b>back</b> of the of the <code>circular_buffer_space_optimized</code> in order to achieve the desired
+ size. In the case the resulting size exceeds the current capacity the capacity will be set to
+ <code>new_size</code>.<br><br>
+ If the current number of elements stored in the <code>circular_buffer_space_optimized</code> is greater
+ than the desired new size then number of <code>[size() - new_size]</code> <b>last</b> elements will be
+ removed. (The capacity will remain unchanged.)<br><br>
+ The amount of allocated memory in the internal buffer may be accommodated as necessary.
+ \param new_size The new size.
+ \param item The element the <code>circular_buffer_space_optimized</code> will be filled with in order to gain
+ the requested size. (See the <i>Effect</i>.)
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the new size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>\link rresize() rresize(size_type, const_reference)\endlink</code>,
+ <code>set_capacity(const capacity_type&)</code>
+ */
+ void resize(size_type new_size, param_value_type item = value_type()) {
+ if (new_size > size()) {
+ if (new_size > m_capacity_ctrl)
+ m_capacity_ctrl = capacity_type(new_size, m_capacity_ctrl.min_capacity());
+ insert(end(), new_size - size(), item);
+ } else {
+ iterator e = end();
+ erase(e - (size() - new_size), e);
+ }
+ }
+
+ /*! \brief Change the capacity (and the minimal guaranteed amount of allocated memory) of the
+ <code>circular_buffer_space_optimized</code>.
+ \post <code>capacity() == capacity_ctrl \&\& size() \<= capacity_ctrl</code><br><br>
+ If the current number of elements stored in the <code>circular_buffer_space_optimized</code> is greater
+ than the desired new capacity then number of <code>[size() - capacity_ctrl.capacity()]</code>
+ <b>first</b> elements will be removed and the new size will be equal to
+ <code>capacity_ctrl.capacity()</code>.<br><br>
+ If the current number of elements stored in the <code>circular_buffer_space_optimized</code> is lower
+ than the new capacity then the amount of allocated memory in the internal buffer may be accommodated as
+ necessary but it will never drop below <code>capacity_ctrl.min_capacity()</code>.
+ \param capacity_ctrl The new capacity controller.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Strong.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in <code>min[size(), capacity_ctrl.%capacity()]</code>).
+ \sa <code>set_capacity(const capacity_type&)</code>,
+ <code>\link rresize() rresize(size_type, const_reference)\endlink</code>
+ */
+ void rset_capacity(const capacity_type& capacity_ctrl) {
+ m_capacity_ctrl = capacity_ctrl;
+ if (capacity_ctrl < size()) {
+ iterator b = begin();
+ circular_buffer<T, Alloc>::rerase(b, b + (size() - capacity_ctrl));
+ }
+ adjust_min_capacity();
+ }
+
+ //! Change the size of the <code>circular_buffer_space_optimized</code>.
+ /*!
+ \post <code>size() == new_size \&\& capacity().%capacity() >= new_size</code><br><br>
+ If the new size is greater than the current size, copies of <code>item</code> will be inserted at the
+ <b>front</b> of the of the <code>circular_buffer_space_optimized</code> in order to achieve the desired
+ size. In the case the resulting size exceeds the current capacity the capacity will be set to
+ <code>new_size</code>.<br><br>
+ If the current number of elements stored in the <code>circular_buffer_space_optimized</code> is greater
+ than the desired new size then number of <code>[size() - new_size]</code> <b>first</b> elements will be
+ removed. (The capacity will remain unchanged.)<br><br>
+ The amount of allocated memory in the internal buffer may be accommodated as necessary.
+ \param new_size The new size.
+ \param item The element the <code>circular_buffer_space_optimized</code> will be filled with in order to gain
+ the requested size. (See the <i>Effect</i>.)
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the new size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>\link resize() resize(size_type, const_reference)\endlink</code>,
+ <code>rset_capacity(const capacity_type&)</code>
+ */
+ void rresize(size_type new_size, param_value_type item = value_type()) {
+ if (new_size > size()) {
+ if (new_size > m_capacity_ctrl)
+ m_capacity_ctrl = capacity_type(new_size, m_capacity_ctrl.min_capacity());
+ rinsert(begin(), new_size - size(), item);
+ } else {
+ rerase(begin(), end() - new_size);
+ }
+ }
+
+ //! Create an empty space optimized circular buffer with zero capacity.
+ /*!
+ \post <code>capacity().%capacity() == 0 \&\& capacity().min_capacity() == 0 \&\& size() == 0</code>
+ \param alloc The allocator.
+ \throws Nothing.
+ \par Complexity
+ Constant.
+ \warning Since Boost version 1.36 the behaviour of this constructor has changed. Now it creates a space
+ optimized circular buffer with zero capacity.
+ */
+ explicit circular_buffer_space_optimized(const allocator_type& alloc = allocator_type())
+ : circular_buffer<T, Alloc>(0, alloc)
+ , m_capacity_ctrl(0) {}
+
+ //! Create an empty space optimized circular buffer with the specified capacity.
+ /*!
+ \post <code>capacity() == capacity_ctrl \&\& size() == 0</code><br><br>
+ The amount of allocated memory in the internal buffer is <code>capacity_ctrl.min_capacity()</code>.
+ \param capacity_ctrl The capacity controller representing the maximum number of elements which can be stored in
+ the <code>circular_buffer_space_optimized</code> and the minimal allocated size of the
+ internal buffer.
+ \param alloc The allocator.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \par Complexity
+ Constant.
+ */
+ explicit circular_buffer_space_optimized(capacity_type capacity_ctrl,
+ const allocator_type& alloc = allocator_type())
+ : circular_buffer<T, Alloc>(capacity_ctrl.min_capacity(), alloc)
+ , m_capacity_ctrl(capacity_ctrl) {}
+
+ /*! \brief Create a full space optimized circular buffer with the specified capacity filled with
+ <code>capacity_ctrl.%capacity()</code> copies of <code>item</code>.
+ \post <code>capacity() == capacity_ctrl \&\& full() \&\& (*this)[0] == item \&\& (*this)[1] == item \&\& ...
+ \&\& (*this) [capacity_ctrl.%capacity() - 1] == item </code><br><br>
+ The amount of allocated memory in the internal buffer is <code>capacity_ctrl.capacity()</code>.
+ \param capacity_ctrl The capacity controller representing the maximum number of elements which can be stored in
+ the <code>circular_buffer_space_optimized</code> and the minimal allocated size of the
+ internal buffer.
+ \param item The element the created <code>circular_buffer_space_optimized</code> will be filled with.
+ \param alloc The allocator.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Complexity
+ Linear (in the <code>capacity_ctrl.%capacity()</code>).
+ */
+ circular_buffer_space_optimized(capacity_type capacity_ctrl, param_value_type item,
+ const allocator_type& alloc = allocator_type())
+ : circular_buffer<T, Alloc>(capacity_ctrl.capacity(), item, alloc)
+ , m_capacity_ctrl(capacity_ctrl) {}
+
+ /*! \brief Create a space optimized circular buffer with the specified capacity filled with <code>n</code> copies
+ of <code>item</code>.
+ \pre <code>capacity_ctrl.%capacity() >= n</code>
+ \post <code>capacity() == capacity_ctrl \&\& size() == n \&\& (*this)[0] == item \&\& (*this)[1] == item
+ \&\& ... \&\& (*this)[n - 1] == item</code><br><br>
+ The amount of allocated memory in the internal buffer is
+ <code>max[n, capacity_ctrl.min_capacity()]</code>.
+ \param capacity_ctrl The capacity controller representing the maximum number of elements which can be stored in
+ the <code>circular_buffer_space_optimized</code> and the minimal allocated size of the
+ internal buffer.
+ \param n The number of elements the created <code>circular_buffer_space_optimized</code> will be filled with.
+ \param item The element the created <code>circular_buffer_space_optimized</code> will be filled with.
+ \param alloc The allocator.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Complexity
+ Linear (in the <code>n</code>).
+ */
+ circular_buffer_space_optimized(capacity_type capacity_ctrl, size_type n, param_value_type item,
+ const allocator_type& alloc = allocator_type())
+ : circular_buffer<T, Alloc>(init_capacity(capacity_ctrl, n), n, item, alloc)
+ , m_capacity_ctrl(capacity_ctrl) {}
+
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+
+ /*! \cond */
+ circular_buffer_space_optimized(const circular_buffer_space_optimized<T, Alloc>& cb)
+ : circular_buffer<T, Alloc>(cb.begin(), cb.end())
+ , m_capacity_ctrl(cb.m_capacity_ctrl) {}
+
+ template <class InputIterator>
+ circular_buffer_space_optimized(InputIterator first, InputIterator last)
+ : circular_buffer<T, Alloc>(first, last)
+ , m_capacity_ctrl(circular_buffer<T, Alloc>::capacity()) {}
+
+ template <class InputIterator>
+ circular_buffer_space_optimized(capacity_type capacity_ctrl, InputIterator first, InputIterator last)
+ : circular_buffer<T, Alloc>(
+ init_capacity(capacity_ctrl, first, last, is_integral<InputIterator>()),
+ first, last)
+ , m_capacity_ctrl(capacity_ctrl) {
+ reduce_capacity(
+ is_same< BOOST_DEDUCED_TYPENAME BOOST_ITERATOR_CATEGORY<InputIterator>::type, std::input_iterator_tag >());
+ }
+ /*! \endcond */
+
+#else
+
+ //! The copy constructor.
+ /*!
+ Creates a copy of the specified <code>circular_buffer_space_optimized</code>.
+ \post <code>*this == cb</code><br><br>
+ The amount of allocated memory in the internal buffer is <code>cb.size()</code>.
+ \param cb The <code>circular_buffer_space_optimized</code> to be copied.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Complexity
+ Linear (in the size of <code>cb</code>).
+ */
+ circular_buffer_space_optimized(const circular_buffer_space_optimized<T, Alloc>& cb)
+ : circular_buffer<T, Alloc>(cb.begin(), cb.end(), cb.get_allocator())
+ , m_capacity_ctrl(cb.m_capacity_ctrl) {}
+
+ //! Create a full space optimized circular buffer filled with a copy of the range.
+ /*!
+ \pre Valid range <code>[first, last)</code>.<br>
+ <code>first</code> and <code>last</code> have to meet the requirements of
+ <a href="http://www.sgi.com/tech/stl/InputIterator.html">InputIterator</a>.
+ \post <code>capacity().%capacity() == std::distance(first, last) \&\& capacity().min_capacity() == 0 \&\&
+ full() \&\& (*this)[0]== *first \&\& (*this)[1] == *(first + 1) \&\& ... \&\&
+ (*this)[std::distance(first, last) - 1] == *(last - 1)</code><br><br>
+ The amount of allocated memory in the internal buffer is <code>std::distance(first, last)</code>.
+ \param first The beginning of the range to be copied.
+ \param last The end of the range to be copied.
+ \param alloc The allocator.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Complexity
+ Linear (in the <code>std::distance(first, last)</code>).
+ */
+ template <class InputIterator>
+ circular_buffer_space_optimized(InputIterator first, InputIterator last,
+ const allocator_type& alloc = allocator_type())
+ : circular_buffer<T, Alloc>(first, last, alloc)
+ , m_capacity_ctrl(circular_buffer<T, Alloc>::capacity()) {}
+
+ /*! \brief Create a space optimized circular buffer with the specified capacity (and the minimal guaranteed amount
+ of allocated memory) filled with a copy of the range.
+ \pre Valid range <code>[first, last)</code>.<br>
+ <code>first</code> and <code>last</code> have to meet the requirements of
+ <a href="http://www.sgi.com/tech/stl/InputIterator.html">InputIterator</a>.
+ \post <code>capacity() == capacity_ctrl \&\& size() \<= std::distance(first, last) \&\& (*this)[0]==
+ *(last - capacity_ctrl.%capacity()) \&\& (*this)[1] == *(last - capacity_ctrl.%capacity() + 1) \&\& ...
+ \&\& (*this)[capacity_ctrl.%capacity() - 1] == *(last - 1)</code><br><br>
+ If the number of items to be copied from the range <code>[first, last)</code> is greater than the
+ specified <code>capacity_ctrl.%capacity()</code> then only elements from the range
+ <code>[last - capacity_ctrl.%capacity(), last)</code> will be copied.<br><br>
+ The amount of allocated memory in the internal buffer is <code>max[capacity_ctrl.min_capacity(),
+ min[capacity_ctrl.%capacity(), std::distance(first, last)]]</code>.
+ \param capacity_ctrl The capacity controller representing the maximum number of elements which can be stored in
+ the <code>circular_buffer_space_optimized</code> and the minimal allocated size of the
+ internal buffer.
+ \param first The beginning of the range to be copied.
+ \param last The end of the range to be copied.
+ \param alloc The allocator.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Complexity
+ Linear (in <code>std::distance(first, last)</code>; in
+ <code>min[capacity_ctrl.%capacity(), std::distance(first, last)]</code> if the <code>InputIterator</code>
+ is a <a href="http://www.sgi.com/tech/stl/RandomAccessIterator.html">RandomAccessIterator</a>).
+ */
+ template <class InputIterator>
+ circular_buffer_space_optimized(capacity_type capacity_ctrl, InputIterator first, InputIterator last,
+ const allocator_type& alloc = allocator_type())
+ : circular_buffer<T, Alloc>(
+ init_capacity(capacity_ctrl, first, last, is_integral<InputIterator>()),
+ first, last, alloc)
+ , m_capacity_ctrl(capacity_ctrl) {
+ reduce_capacity(
+ is_same< BOOST_DEDUCED_TYPENAME BOOST_ITERATOR_CATEGORY<InputIterator>::type, std::input_iterator_tag >());
+ }
+
+#endif // #if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+
+#if defined(BOOST_CB_NEVER_DEFINED)
+// This section will never be compiled - the default destructor will be generated instead.
+// Declared only for documentation purpose.
+
+ //! The destructor.
+ /*!
+ Destroys the <code>circular_buffer_space_optimized</code>.
+ \throws Nothing.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (including
+ iterators equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>clear()</code>
+ */
+ ~circular_buffer_space_optimized();
+
+ //! no-comment
+ void erase_begin(size_type n);
+
+ //! no-comment
+ void erase_end(size_type n);
+
+#endif // #if defined(BOOST_CB_NEVER_DEFINED)
+
+ //! The assign operator.
+ /*!
+ Makes this <code>circular_buffer_space_optimized</code> to become a copy of the specified
+ <code>circular_buffer_space_optimized</code>.
+ \post <code>*this == cb</code><br><br>
+ The amount of allocated memory in the internal buffer is <code>cb.size()</code>.
+ \param cb The <code>circular_buffer_space_optimized</code> to be copied.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Strong.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to this <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of <code>cb</code>).
+ \sa <code>\link assign(size_type, param_value_type) assign(size_type, const_reference)\endlink</code>,
+ <code>\link assign(capacity_type, size_type, param_value_type)
+ assign(capacity_type, size_type, const_reference)\endlink</code>,
+ <code>assign(InputIterator, InputIterator)</code>,
+ <code>assign(capacity_type, InputIterator, InputIterator)</code>
+ */
+ circular_buffer_space_optimized<T, Alloc>& operator = (const circular_buffer_space_optimized<T, Alloc>& cb) {
+ if (this == &cb)
+ return *this;
+ circular_buffer<T, Alloc>::assign(cb.begin(), cb.end());
+ m_capacity_ctrl = cb.m_capacity_ctrl;
+ return *this;
+ }
+
+ //! Assign <code>n</code> items into the space optimized circular buffer.
+ /*!
+ The content of the <code>circular_buffer_space_optimized</code> will be removed and replaced with
+ <code>n</code> copies of the <code>item</code>.
+ \post <code>capacity().%capacity() == n \&\& capacity().min_capacity() == 0 \&\& size() == n \&\& (*this)[0] ==
+ item \&\& (*this)[1] == item \&\& ... \&\& (*this) [n - 1] == item</code><br><br>
+ The amount of allocated memory in the internal buffer is <code>n</code>.
+ \param n The number of elements the <code>circular_buffer_space_optimized</code> will be filled with.
+ \param item The element the <code>circular_buffer_space_optimized</code> will be filled with.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the <code>n</code>).
+ \sa <code>\link operator=(const circular_buffer_space_optimized&) operator=\endlink</code>,
+ <code>\link assign(capacity_type, size_type, param_value_type)
+ assign(capacity_type, size_type, const_reference)\endlink</code>,
+ <code>assign(InputIterator, InputIterator)</code>,
+ <code>assign(capacity_type, InputIterator, InputIterator)</code>
+ */
+ void assign(size_type n, param_value_type item) {
+ circular_buffer<T, Alloc>::assign(n, item);
+ m_capacity_ctrl = capacity_type(n);
+ }
+
+ //! Assign <code>n</code> items into the space optimized circular buffer specifying the capacity.
+ /*!
+ The capacity of the <code>circular_buffer_space_optimized</code> will be set to the specified value and the
+ content of the <code>circular_buffer_space_optimized</code> will be removed and replaced with <code>n</code>
+ copies of the <code>item</code>.
+ \pre <code>capacity_ctrl.%capacity() >= n</code>
+ \post <code>capacity() == capacity_ctrl \&\& size() == n \&\& (*this)[0] == item \&\& (*this)[1] == item
+ \&\& ... \&\& (*this) [n - 1] == item </code><br><br>
+ The amount of allocated memory will be <code>max[n, capacity_ctrl.min_capacity()]</code>.
+ \param capacity_ctrl The new capacity controller.
+ \param n The number of elements the <code>circular_buffer_space_optimized</code> will be filled with.
+ \param item The element the <code>circular_buffer_space_optimized</code> will be filled with.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the <code>n</code>).
+ \sa <code>\link operator=(const circular_buffer_space_optimized&) operator=\endlink</code>,
+ <code>\link assign(size_type, param_value_type) assign(size_type, const_reference)\endlink</code>,
+ <code>assign(InputIterator, InputIterator)</code>,
+ <code>assign(capacity_type, InputIterator, InputIterator)</code>
+ */
+ void assign(capacity_type capacity_ctrl, size_type n, param_value_type item) {
+ BOOST_CB_ASSERT(capacity_ctrl.capacity() >= n); // check for new capacity lower than n
+ circular_buffer<T, Alloc>::assign((std::max)(capacity_ctrl.min_capacity(), n), n, item);
+ m_capacity_ctrl = capacity_ctrl;
+ }
+
+ //! Assign a copy of the range into the space optimized circular buffer.
+ /*!
+ The content of the <code>circular_buffer_space_optimized</code> will be removed and replaced with copies of
+ elements from the specified range.
+ \pre Valid range <code>[first, last)</code>.<br>
+ <code>first</code> and <code>last</code> have to meet the requirements of
+ <a href="http://www.sgi.com/tech/stl/InputIterator.html">InputIterator</a>.
+ \post <code>capacity().%capacity() == std::distance(first, last) \&\& capacity().min_capacity() == 0 \&\&
+ size() == std::distance(first, last) \&\& (*this)[0]== *first \&\& (*this)[1] == *(first + 1) \&\& ...
+ \&\& (*this)[std::distance(first, last) - 1] == *(last - 1)</code><br><br>
+ The amount of allocated memory in the internal buffer is <code>std::distance(first, last)</code>.
+ \param first The beginning of the range to be copied.
+ \param last The end of the range to be copied.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the <code>std::distance(first, last)</code>).
+ \sa <code>\link operator=(const circular_buffer_space_optimized&) operator=\endlink</code>,
+ <code>\link assign(size_type, param_value_type) assign(size_type, const_reference)\endlink</code>,
+ <code>\link assign(capacity_type, size_type, param_value_type)
+ assign(capacity_type, size_type, const_reference)\endlink</code>,
+ <code>assign(capacity_type, InputIterator, InputIterator)</code>
+ */
+ template <class InputIterator>
+ void assign(InputIterator first, InputIterator last) {
+ circular_buffer<T, Alloc>::assign(first, last);
+ m_capacity_ctrl = capacity_type(circular_buffer<T, Alloc>::capacity());
+ }
+
+ //! Assign a copy of the range into the space optimized circular buffer specifying the capacity.
+ /*!
+ The capacity of the <code>circular_buffer_space_optimized</code> will be set to the specified value and the
+ content of the <code>circular_buffer_space_optimized</code> will be removed and replaced with copies of
+ elements from the specified range.
+ \pre Valid range <code>[first, last)</code>.<br>
+ <code>first</code> and <code>last</code> have to meet the requirements of
+ <a href="http://www.sgi.com/tech/stl/InputIterator.html">InputIterator</a>.
+ \post <code>capacity() == capacity_ctrl \&\& size() \<= std::distance(first, last) \&\&
+ (*this)[0]== *(last - capacity) \&\& (*this)[1] == *(last - capacity + 1) \&\& ... \&\&
+ (*this)[capacity - 1] == *(last - 1)</code><br><br>
+ If the number of items to be copied from the range <code>[first, last)</code> is greater than the
+ specified <code>capacity</code> then only elements from the range <code>[last - capacity, last)</code>
+ will be copied.<br><br> The amount of allocated memory in the internal buffer is
+ <code>max[std::distance(first, last), capacity_ctrl.min_capacity()]</code>.
+ \param capacity_ctrl The new capacity controller.
+ \param first The beginning of the range to be copied.
+ \param last The end of the range to be copied.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in <code>std::distance(first, last)</code>; in
+ <code>min[capacity_ctrl.%capacity(), std::distance(first, last)]</code> if the <code>InputIterator</code>
+ is a <a href="http://www.sgi.com/tech/stl/RandomAccessIterator.html">RandomAccessIterator</a>).
+ \sa <code>\link operator=(const circular_buffer_space_optimized&) operator=\endlink</code>,
+ <code>\link assign(size_type, param_value_type) assign(size_type, const_reference)\endlink</code>,
+ <code>\link assign(capacity_type, size_type, param_value_type)
+ assign(capacity_type, size_type, const_reference)\endlink</code>,
+ <code>assign(InputIterator, InputIterator)</code>
+ */
+ template <class InputIterator>
+ void assign(capacity_type capacity_ctrl, InputIterator first, InputIterator last) {
+ m_capacity_ctrl = capacity_ctrl;
+ circular_buffer<T, Alloc>::assign(capacity_ctrl, first, last);
+ }
+
+ //! Swap the contents of two space optimized circular buffers.
+ /*!
+ \post <code>this</code> contains elements of <code>cb</code> and vice versa; the capacity and the amount of
+ allocated memory in the internal buffer of <code>this</code> equal to the capacity and the amount of
+ allocated memory of <code>cb</code> and vice versa.
+ \param cb The <code>circular_buffer_space_optimized</code> whose content will be swapped.
+ \throws Nothing.
+ \par Exception Safety
+ No-throw.
+ \par Iterator Invalidation
+ Invalidates all iterators of both <code>circular_buffer_space_optimized</code> containers. (On the other
+ hand the iterators still point to the same elements but within another container. If you want to rely on
+ this feature you have to turn the <a href="circular_buffer.html#debug">Debug Support</a> off otherwise an
+ assertion will report an error if such invalidated iterator is used.)
+ \par Complexity
+ Constant (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>\link swap(circular_buffer<T, Alloc>&, circular_buffer<T, Alloc>&)
+ swap(circular_buffer_space_optimized<T, Alloc>&, circular_buffer_space_optimized<T, Alloc>&)\endlink</code>
+ */
+ void swap(circular_buffer_space_optimized<T, Alloc>& cb) {
+ std::swap(m_capacity_ctrl, cb.m_capacity_ctrl);
+ circular_buffer<T, Alloc>::swap(cb);
+ }
+
+ //! Insert a new element at the end of the space optimized circular buffer.
+ /*!
+ \post if <code>capacity().%capacity() > 0</code> then <code>back() == item</code><br>
+ If the <code>circular_buffer_space_optimized</code> is full, the first element will be removed. If the
+ capacity is <code>0</code>, nothing will be inserted.<br><br>
+ The amount of allocated memory in the internal buffer may be predictively increased.
+ \param item The element to be inserted.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>\link push_front() push_front(const_reference)\endlink</code>, <code>pop_back()</code>,
+ <code>pop_front()</code>
+ */
+ void push_back(param_value_type item = value_type()) {
+ check_low_capacity();
+ circular_buffer<T, Alloc>::push_back(item);
+ }
+
+ //! Insert a new element at the beginning of the space optimized circular buffer.
+ /*!
+ \post if <code>capacity().%capacity() > 0</code> then <code>front() == item</code><br>
+ If the <code>circular_buffer_space_optimized</code> is full, the last element will be removed. If the
+ capacity is <code>0</code>, nothing will be inserted.<br><br>
+ The amount of allocated memory in the internal buffer may be predictively increased.
+ \param item The element to be inserted.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>\link push_back() push_back(const_reference)\endlink</code>, <code>pop_back()</code>,
+ <code>pop_front()</code>
+ */
+ void push_front(param_value_type item = value_type()) {
+ check_low_capacity();
+ circular_buffer<T, Alloc>::push_front(item);
+ }
+
+ //! Remove the last element from the space optimized circular buffer.
+ /*!
+ \pre <code>!empty()</code>
+ \post The last element is removed from the <code>circular_buffer_space_optimized</code>.<br><br>
+ The amount of allocated memory in the internal buffer may be predictively decreased.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>pop_front()</code>, <code>\link push_back() push_back(const_reference)\endlink</code>,
+ <code>\link push_front() push_front(const_reference)\endlink</code>
+ */
+ void pop_back() {
+ circular_buffer<T, Alloc>::pop_back();
+ check_high_capacity();
+ }
+
+ //! Remove the first element from the space optimized circular buffer.
+ /*!
+ \pre <code>!empty()</code>
+ \post The first element is removed from the <code>circular_buffer_space_optimized</code>.<br><br>
+ The amount of allocated memory in the internal buffer may be predictively decreased.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>pop_back()</code>, <code>\link push_back() push_back(const_reference)\endlink</code>,
+ <code>\link push_front() push_front(const_reference)\endlink</code>
+ */
+ void pop_front() {
+ circular_buffer<T, Alloc>::pop_front();
+ check_high_capacity();
+ }
+
+ //! Insert an element at the specified position.
+ /*!
+ \pre <code>pos</code> is a valid iterator pointing to the <code>circular_buffer_space_optimized</code> or its
+ end.
+ \post The <code>item</code> will be inserted at the position <code>pos</code>.<br>
+ If the <code>circular_buffer_space_optimized</code> is full, the first element will be overwritten. If
+ the <code>circular_buffer_space_optimized</code> is full and the <code>pos</code> points to
+ <code>begin()</code>, then the <code>item</code> will not be inserted. If the capacity is <code>0</code>,
+ nothing will be inserted.<br><br>
+ The amount of allocated memory in the internal buffer may be predictively increased.
+ \param pos An iterator specifying the position where the <code>item</code> will be inserted.
+ \param item The element to be inserted.
+ \return Iterator to the inserted element or <code>begin()</code> if the <code>item</code> is not inserted. (See
+ the <i>Effect</i>.)
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>\link insert(iterator, size_type, param_value_type)
+ insert(iterator, size_type, value_type)\endlink</code>,
+ <code>insert(iterator, InputIterator, InputIterator)</code>,
+ <code>\link rinsert(iterator, param_value_type) rinsert(iterator, value_type)\endlink</code>,
+ <code>\link rinsert(iterator, size_type, param_value_type)
+ rinsert(iterator, size_type, value_type)\endlink</code>,
+ <code>rinsert(iterator, InputIterator, InputIterator)</code>
+ */
+ iterator insert(iterator pos, param_value_type item = value_type()) {
+ size_type index = pos - begin();
+ check_low_capacity();
+ return circular_buffer<T, Alloc>::insert(begin() + index, item);
+ }
+
+ //! Insert <code>n</code> copies of the <code>item</code> at the specified position.
+ /*!
+ \pre <code>pos</code> is a valid iterator pointing to the <code>circular_buffer_space_optimized</code> or its
+ end.
+ \post The number of <code>min[n, (pos - begin()) + reserve()]</code> elements will be inserted at the position
+ <code>pos</code>.<br>The number of <code>min[pos - begin(), max[0, n - reserve()]]</code> elements will
+ be overwritten at the beginning of the <code>circular_buffer_space_optimized</code>.<br>(See
+ <i>Example</i> for the explanation.)<br><br>
+ The amount of allocated memory in the internal buffer may be predictively increased.
+ \param pos An iterator specifying the position where the <code>item</code>s will be inserted.
+ \param n The number of <code>item</code>s the to be inserted.
+ \param item The element whose copies will be inserted.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in <code>min[capacity().%capacity(), size() + n]</code>).
+ \par Example
+ Consider a <code>circular_buffer_space_optimized</code> with the capacity of 6 and the size of 4. Its
+ internal buffer may look like the one below.<br><br>
+ <code>|1|2|3|4| | |</code><br>
+ <code>p ---^</code><br><br>After inserting 5 elements at the position <code>p</code>:<br><br>
+ <code>insert(p, (size_t)5, 0);</code><br><br>actually only 4 elements get inserted and elements
+ <code>1</code> and <code>2</code> are overwritten. This is due to the fact the insert operation preserves
+ the capacity. After insertion the internal buffer looks like this:<br><br><code>|0|0|0|0|3|4|</code><br>
+ <br>For comparison if the capacity would not be preserved the internal buffer would then result in
+ <code>|1|2|0|0|0|0|0|3|4|</code>.
+ \sa <code>\link insert(iterator, param_value_type) insert(iterator, value_type)\endlink</code>,
+ <code>insert(iterator, InputIterator, InputIterator)</code>,
+ <code>\link rinsert(iterator, param_value_type) rinsert(iterator, value_type)\endlink</code>,
+ <code>\link rinsert(iterator, size_type, param_value_type)
+ rinsert(iterator, size_type, value_type)\endlink</code>,
+ <code>rinsert(iterator, InputIterator, InputIterator)</code>
+ */
+ void insert(iterator pos, size_type n, param_value_type item) {
+ size_type index = pos - begin();
+ check_low_capacity(n);
+ circular_buffer<T, Alloc>::insert(begin() + index, n, item);
+ }
+
+ //! Insert the range <code>[first, last)</code> at the specified position.
+ /*!
+ \pre <code>pos</code> is a valid iterator pointing to the <code>circular_buffer_space_optimized</code> or its
+ end.<br>Valid range <code>[first, last)</code> where <code>first</code> and <code>last</code> meet the
+ requirements of an <a href="http://www.sgi.com/tech/stl/InputIterator.html">InputIterator</a>.
+ \post Elements from the range
+ <code>[first + max[0, distance(first, last) - (pos - begin()) - reserve()], last)</code> will be
+ inserted at the position <code>pos</code>.<br>The number of <code>min[pos - begin(), max[0,
+ distance(first, last) - reserve()]]</code> elements will be overwritten at the beginning of the
+ <code>circular_buffer_space_optimized</code>.<br>(See <i>Example</i> for the explanation.)<br><br>
+ The amount of allocated memory in the internal buffer may be predictively increased.
+ \param pos An iterator specifying the position where the range will be inserted.
+ \param first The beginning of the range to be inserted.
+ \param last The end of the range to be inserted.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in <code>[size() + std::distance(first, last)]</code>; in
+ <code>min[capacity().%capacity(), size() + std::distance(first, last)]</code> if the
+ <code>InputIterator</code> is a
+ <a href="http://www.sgi.com/tech/stl/RandomAccessIterator.html">RandomAccessIterator</a>).
+ \par Example
+ Consider a <code>circular_buffer_space_optimized</code> with the capacity of 6 and the size of 4. Its
+ internal buffer may look like the one below.<br><br>
+ <code>|1|2|3|4| | |</code><br>
+ <code>p ---^</code><br><br>After inserting a range of elements at the position <code>p</code>:<br><br>
+ <code>int array[] = { 5, 6, 7, 8, 9 };</code><br><code>insert(p, array, array + 5);</code><br><br>
+ actually only elements <code>6</code>, <code>7</code>, <code>8</code> and <code>9</code> from the
+ specified range get inserted and elements <code>1</code> and <code>2</code> are overwritten. This is due
+ to the fact the insert operation preserves the capacity. After insertion the internal buffer looks like
+ this:<br><br><code>|6|7|8|9|3|4|</code><br><br>For comparison if the capacity would not be preserved the
+ internal buffer would then result in <code>|1|2|5|6|7|8|9|3|4|</code>.
+ \sa <code>\link insert(iterator, param_value_type) insert(iterator, value_type)\endlink</code>,
+ <code>\link insert(iterator, size_type, param_value_type)
+ insert(iterator, size_type, value_type)\endlink</code>, <code>\link rinsert(iterator, param_value_type)
+ rinsert(iterator, value_type)\endlink</code>, <code>\link rinsert(iterator, size_type, param_value_type)
+ rinsert(iterator, size_type, value_type)\endlink</code>,
+ <code>rinsert(iterator, InputIterator, InputIterator)</code>
+ */
+ template <class InputIterator>
+ void insert(iterator pos, InputIterator first, InputIterator last) {
+ insert(pos, first, last, is_integral<InputIterator>());
+ }
+
+ //! Insert an element before the specified position.
+ /*!
+ \pre <code>pos</code> is a valid iterator pointing to the <code>circular_buffer_space_optimized</code> or its
+ end.
+ \post The <code>item</code> will be inserted before the position <code>pos</code>.<br>
+ If the <code>circular_buffer_space_optimized</code> is full, the last element will be overwritten. If the
+ <code>circular_buffer_space_optimized</code> is full and the <code>pos</code> points to
+ <code>end()</code>, then the <code>item</code> will not be inserted. If the capacity is <code>0</code>,
+ nothing will be inserted.<br><br>
+ The amount of allocated memory in the internal buffer may be predictively increased.
+ \param pos An iterator specifying the position before which the <code>item</code> will be inserted.
+ \param item The element to be inserted.
+ \return Iterator to the inserted element or <code>end()</code> if the <code>item</code> is not inserted. (See
+ the <i>Effect</i>.)
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>\link rinsert(iterator, size_type, param_value_type)
+ rinsert(iterator, size_type, value_type)\endlink</code>,
+ <code>rinsert(iterator, InputIterator, InputIterator)</code>,
+ <code>\link insert(iterator, param_value_type) insert(iterator, value_type)\endlink</code>,
+ <code>\link insert(iterator, size_type, param_value_type)
+ insert(iterator, size_type, value_type)\endlink</code>,
+ <code>insert(iterator, InputIterator, InputIterator)</code>
+ */
+ iterator rinsert(iterator pos, param_value_type item = value_type()) {
+ size_type index = pos - begin();
+ check_low_capacity();
+ return circular_buffer<T, Alloc>::rinsert(begin() + index, item);
+ }
+
+ //! Insert <code>n</code> copies of the <code>item</code> before the specified position.
+ /*!
+ \pre <code>pos</code> is a valid iterator pointing to the <code>circular_buffer_space_optimized</code> or its
+ end.
+ \post The number of <code>min[n, (end() - pos) + reserve()]</code> elements will be inserted before the
+ position <code>pos</code>.<br>The number of <code>min[end() - pos, max[0, n - reserve()]]</code> elements
+ will be overwritten at the end of the <code>circular_buffer_space_optimized</code>.<br>(See
+ <i>Example</i> for the explanation.)<br><br>
+ The amount of allocated memory in the internal buffer may be predictively increased.
+ \param pos An iterator specifying the position where the <code>item</code>s will be inserted.
+ \param n The number of <code>item</code>s the to be inserted.
+ \param item The element whose copies will be inserted.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in <code>min[capacity().%capacity(), size() + n]</code>).
+ \par Example
+ Consider a <code>circular_buffer_space_optimized</code> with the capacity of 6 and the size of 4. Its
+ internal buffer may look like the one below.<br><br>
+ <code>|1|2|3|4| | |</code><br>
+ <code>p ---^</code><br><br>After inserting 5 elements before the position <code>p</code>:<br><br>
+ <code>rinsert(p, (size_t)5, 0);</code><br><br>actually only 4 elements get inserted and elements
+ <code>3</code> and <code>4</code> are overwritten. This is due to the fact the rinsert operation preserves
+ the capacity. After insertion the internal buffer looks like this:<br><br><code>|1|2|0|0|0|0|</code><br>
+ <br>For comparison if the capacity would not be preserved the internal buffer would then result in
+ <code>|1|2|0|0|0|0|0|3|4|</code>.
+ \sa <code>\link rinsert(iterator, param_value_type) rinsert(iterator, value_type)\endlink</code>,
+ <code>rinsert(iterator, InputIterator, InputIterator)</code>,
+ <code>\link insert(iterator, param_value_type) insert(iterator, value_type)\endlink</code>,
+ <code>\link insert(iterator, size_type, param_value_type)
+ insert(iterator, size_type, value_type)\endlink</code>,
+ <code>insert(iterator, InputIterator, InputIterator)</code>
+ */
+ void rinsert(iterator pos, size_type n, param_value_type item) {
+ size_type index = pos - begin();
+ check_low_capacity(n);
+ circular_buffer<T, Alloc>::rinsert(begin() + index, n, item);
+ }
+
+ //! Insert the range <code>[first, last)</code> before the specified position.
+ /*!
+ \pre <code>pos</code> is a valid iterator pointing to the <code>circular_buffer_space_optimized</code> or its
+ end.<br>
+ Valid range <code>[first, last)</code> where <code>first</code> and <code>last</code> meet the
+ requirements of an <a href="http://www.sgi.com/tech/stl/InputIterator.html">InputIterator</a>.
+ \post Elements from the range
+ <code>[first, last - max[0, distance(first, last) - (end() - pos) - reserve()])</code> will be inserted
+ before the position <code>pos</code>.<br>The number of <code>min[end() - pos, max[0,
+ distance(first, last) - reserve()]]</code> elements will be overwritten at the end of the
+ <code>circular_buffer</code>.<br>(See <i>Example</i> for the explanation.)<br><br>
+ The amount of allocated memory in the internal buffer may be predictively increased.
+ \param pos An iterator specifying the position where the range will be inserted.
+ \param first The beginning of the range to be inserted.
+ \param last The end of the range to be inserted.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::T(const T&)</code> throws.
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in <code>[size() + std::distance(first, last)]</code>; in
+ <code>min[capacity().%capacity(), size() + std::distance(first, last)]</code> if the
+ <code>InputIterator</code> is a
+ <a href="http://www.sgi.com/tech/stl/RandomAccessIterator.html">RandomAccessIterator</a>).
+ \par Example
+ Consider a <code>circular_buffer_space_optimized</code> with the capacity of 6 and the size of 4. Its
+ internal buffer may look like the one below.<br><br>
+ <code>|1|2|3|4| | |</code><br>
+ <code>p ---^</code><br><br>After inserting a range of elements before the position <code>p</code>:<br><br>
+ <code>int array[] = { 5, 6, 7, 8, 9 };</code><br><code>insert(p, array, array + 5);</code><br><br>
+ actually only elements <code>5</code>, <code>6</code>, <code>7</code> and <code>8</code> from the
+ specified range get inserted and elements <code>3</code> and <code>4</code> are overwritten. This is due
+ to the fact the rinsert operation preserves the capacity. After insertion the internal buffer looks like
+ this:<br><br><code>|1|2|5|6|7|8|</code><br><br>For comparison if the capacity would not be preserved the
+ internal buffer would then result in <code>|1|2|5|6|7|8|9|3|4|</code>.
+ \sa <code>\link rinsert(iterator, param_value_type) rinsert(iterator, value_type)\endlink</code>,
+ <code>\link rinsert(iterator, size_type, param_value_type)
+ rinsert(iterator, size_type, value_type)\endlink</code>, <code>\link insert(iterator, param_value_type)
+ insert(iterator, value_type)\endlink</code>, <code>\link insert(iterator, size_type, param_value_type)
+ insert(iterator, size_type, value_type)\endlink</code>,
+ <code>insert(iterator, InputIterator, InputIterator)</code>
+ */
+ template <class InputIterator>
+ void rinsert(iterator pos, InputIterator first, InputIterator last) {
+ rinsert(pos, first, last, is_integral<InputIterator>());
+ }
+
+ //! Remove an element at the specified position.
+ /*!
+ \pre <code>pos</code> is a valid iterator pointing to the <code>circular_buffer_space_optimized</code> (but not
+ an <code>end()</code>).
+ \post The element at the position <code>pos</code> is removed.<br><br>
+ The amount of allocated memory in the internal buffer may be predictively decreased.
+ \param pos An iterator pointing at the element to be removed.
+ \return Iterator to the first element remaining beyond the removed element or <code>end()</code> if no such
+ element exists.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>erase(iterator, iterator)</code>, <code>rerase(iterator)</code>,
+ <code>rerase(iterator, iterator)</code>, <code>clear()</code>
+ */
+ iterator erase(iterator pos) {
+ iterator it = circular_buffer<T, Alloc>::erase(pos);
+ size_type index = it - begin();
+ check_high_capacity();
+ return begin() + index;
+ }
+
+ //! Erase the range <code>[first, last)</code>.
+ /*!
+ \pre Valid range <code>[first, last)</code>.
+ \post The elements from the range <code>[first, last)</code> are removed. (If <code>first == last</code>
+ nothing is removed.)<br><br>
+ The amount of allocated memory in the internal buffer may be predictively decreased.
+ \param first The beginning of the range to be removed.
+ \param last The end of the range to be removed.
+ \return Iterator to the first element remaining beyond the removed elements or <code>end()</code> if no such
+ element exists.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>erase(iterator)</code>, <code>rerase(iterator)</code>, <code>rerase(iterator, iterator)</code>,
+ <code>clear()</code>
+ */
+ iterator erase(iterator first, iterator last) {
+ iterator it = circular_buffer<T, Alloc>::erase(first, last);
+ size_type index = it - begin();
+ check_high_capacity();
+ return begin() + index;
+ }
+
+ //! Remove an element at the specified position.
+ /*!
+ \pre <code>pos</code> is a valid iterator pointing to the <code>circular_buffer_space_optimized</code> (but not
+ an <code>end()</code>).<br><br>
+ The amount of allocated memory in the internal buffer may be predictively decreased.
+ \post The element at the position <code>pos</code> is removed.
+ \param pos An iterator pointing at the element to be removed.
+ \return Iterator to the first element remaining in front of the removed element or <code>begin()</code> if no
+ such element exists.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \note Basically there is no difference between <code>erase(iterator)</code> and this method. It is implemented
+ only for consistency with the base <code><a href="circular_buffer.html">circular_buffer</a></code>.
+ \sa <code>erase(iterator)</code>, <code>erase(iterator, iterator)</code>,
+ <code>rerase(iterator, iterator)</code>, <code>clear()</code>
+ */
+ iterator rerase(iterator pos) {
+ iterator it = circular_buffer<T, Alloc>::rerase(pos);
+ size_type index = it - begin();
+ check_high_capacity();
+ return begin() + index;
+ }
+
+ //! Erase the range <code>[first, last)</code>.
+ /*!
+ \pre Valid range <code>[first, last)</code>.
+ \post The elements from the range <code>[first, last)</code> are removed. (If <code>first == last</code>
+ nothing is removed.)<br><br>
+ The amount of allocated memory in the internal buffer may be predictively decreased.
+ \param first The beginning of the range to be removed.
+ \param last The end of the range to be removed.
+ \return Iterator to the first element remaining in front of the removed elements or <code>begin()</code> if no
+ such element exists.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \throws Whatever <code>T::operator = (const T&)</code> throws.
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \note Basically there is no difference between <code>erase(iterator, iterator)</code> and this method. It is
+ implemented only for consistency with the base
+ <code><a href="circular_buffer.html">circular_buffer</a></code>.
+ \sa <code>erase(iterator)</code>, <code>erase(iterator, iterator)</code>, <code>rerase(iterator)</code>,
+ <code>clear()</code>
+ */
+ iterator rerase(iterator first, iterator last) {
+ iterator it = circular_buffer<T, Alloc>::rerase(first, last);
+ size_type index = it - begin();
+ check_high_capacity();
+ return begin() + index;
+ }
+
+ //! Remove all stored elements from the space optimized circular buffer.
+ /*!
+ \post <code>size() == 0</code><br><br>
+ The amount of allocated memory in the internal buffer may be predictively decreased.
+ \throws "An allocation error" if memory is exhausted (<code>std::bad_alloc</code> if the standard allocator is
+ used).
+ \par Exception Safety
+ Basic.
+ \par Iterator Invalidation
+ Invalidates all iterators pointing to the <code>circular_buffer_space_optimized</code> (except iterators
+ equal to <code>end()</code>).
+ \par Complexity
+ Linear (in the size of the <code>circular_buffer_space_optimized</code>).
+ \sa <code>~circular_buffer_space_optimized()</code>, <code>erase(iterator)</code>,
+ <code>erase(iterator, iterator)</code>, <code>rerase(iterator)</code>,
+ <code>rerase(iterator, iterator)</code>
+ */
+ void clear() { erase(begin(), end()); }
+
+private:
+// Helper methods
+
+ //! Adjust the amount of allocated memory.
+ void adjust_min_capacity() {
+ if (m_capacity_ctrl.min_capacity() > circular_buffer<T, Alloc>::capacity())
+ circular_buffer<T, Alloc>::set_capacity(m_capacity_ctrl.min_capacity());
+ else
+ check_high_capacity();
+ }
+
+ //! Ensure the reserve for possible growth up.
+ size_type ensure_reserve(size_type new_capacity, size_type buffer_size) const {
+ if (buffer_size + new_capacity / 5 >= new_capacity)
+ new_capacity *= 2; // ensure at least 20% reserve
+ if (new_capacity > m_capacity_ctrl)
+ return m_capacity_ctrl;
+ return new_capacity;
+ }
+
+ //! Check for low capacity.
+ /*
+ \post If the capacity is low it will be increased.
+ */
+ void check_low_capacity(size_type n = 1) {
+ size_type new_size = size() + n;
+ size_type new_capacity = circular_buffer<T, Alloc>::capacity();
+ if (new_size > new_capacity) {
+ if (new_capacity == 0)
+ new_capacity = 1;
+ for (; new_size > new_capacity; new_capacity *= 2) {}
+ circular_buffer<T, Alloc>::set_capacity(
+ ensure_reserve(new_capacity, new_size));
+ }
+#if BOOST_CB_ENABLE_DEBUG
+ this->invalidate_iterators_except(end());
+#endif
+ }
+
+ //! Check for high capacity.
+ /*
+ \post If the capacity is high it will be decreased.
+ */
+ void check_high_capacity() {
+ size_type new_capacity = circular_buffer<T, Alloc>::capacity();
+ while (new_capacity / 3 >= size()) { // (new_capacity / 3) -> avoid oscillations
+ new_capacity /= 2;
+ if (new_capacity <= m_capacity_ctrl.min_capacity()) {
+ new_capacity = m_capacity_ctrl.min_capacity();
+ break;
+ }
+ }
+ circular_buffer<T, Alloc>::set_capacity(
+ ensure_reserve(new_capacity, size()));
+#if BOOST_CB_ENABLE_DEBUG
+ this->invalidate_iterators_except(end());
+#endif
+ }
+
+ //! Specialized method for reducing the capacity.
+ void reduce_capacity(const true_type&) {
+ circular_buffer<T, Alloc>::set_capacity((std::max)(m_capacity_ctrl.min_capacity(), size()));
+ }
+
+ //! Specialized method for reducing the capacity.
+ void reduce_capacity(const false_type&) {}
+
+ //! Determine the initial capacity.
+ static size_type init_capacity(const capacity_type& capacity_ctrl, size_type n) {
+ BOOST_CB_ASSERT(capacity_ctrl.capacity() >= n); // check for capacity lower than n
+ return (std::max)(capacity_ctrl.min_capacity(), n);
+ }
+
+ //! Specialized method for determining the initial capacity.
+ template <class IntegralType>
+ static size_type init_capacity(const capacity_type& capacity_ctrl, IntegralType n, IntegralType item,
+ const true_type&) {
+ return init_capacity(capacity_ctrl, static_cast<size_type>(n));
+ }
+
+ //! Specialized method for determining the initial capacity.
+ template <class Iterator>
+ static size_type init_capacity(const capacity_type& capacity_ctrl, Iterator first, Iterator last,
+ const false_type&) {
+ BOOST_CB_IS_CONVERTIBLE(Iterator, value_type); // check for invalid iterator type
+#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x581))
+ return init_capacity(capacity_ctrl, first, last, BOOST_ITERATOR_CATEGORY<Iterator>::type());
+#else
+ return init_capacity(
+ capacity_ctrl, first, last, BOOST_DEDUCED_TYPENAME BOOST_ITERATOR_CATEGORY<Iterator>::type());
+#endif
+ }
+
+ //! Specialized method for determining the initial capacity.
+ template <class InputIterator>
+ static size_type init_capacity(const capacity_type& capacity_ctrl, InputIterator first, InputIterator last,
+ const std::input_iterator_tag&) {
+ return capacity_ctrl.capacity();
+ }
+
+ //! Specialized method for determining the initial capacity.
+ template <class ForwardIterator>
+ static size_type init_capacity(const capacity_type& capacity_ctrl, ForwardIterator first, ForwardIterator last,
+ const std::forward_iterator_tag&) {
+ BOOST_CB_ASSERT(std::distance(first, last) >= 0); // check for wrong range
+ return (std::max)(capacity_ctrl.min_capacity(),
+ (std::min)(capacity_ctrl.capacity(), static_cast<size_type>(std::distance(first, last))));
+ }
+
+ //! Specialized insert method.
+ template <class IntegralType>
+ void insert(const iterator& pos, IntegralType n, IntegralType item, const true_type&) {
+ insert(pos, static_cast<size_type>(n), static_cast<value_type>(item));
+ }
+
+ //! Specialized insert method.
+ template <class Iterator>
+ void insert(const iterator& pos, Iterator first, Iterator last, const false_type&) {
+ size_type index = pos - begin();
+ check_low_capacity(std::distance(first, last));
+ circular_buffer<T, Alloc>::insert(begin() + index, first, last);
+ }
+
+ //! Specialized rinsert method.
+ template <class IntegralType>
+ void rinsert(const iterator& pos, IntegralType n, IntegralType item, const true_type&) {
+ rinsert(pos, static_cast<size_type>(n), static_cast<value_type>(item));
+ }
+
+ //! Specialized rinsert method.
+ template <class Iterator>
+ void rinsert(const iterator& pos, Iterator first, Iterator last, const false_type&) {
+ size_type index = pos - begin();
+ check_low_capacity(std::distance(first, last));
+ circular_buffer<T, Alloc>::rinsert(begin() + index, first, last);
+ }
+};
+
+// Non-member functions
+
+//! Test two space optimized circular buffers for equality.
+template <class T, class Alloc>
+inline bool operator == (const circular_buffer_space_optimized<T, Alloc>& lhs,
+ const circular_buffer_space_optimized<T, Alloc>& rhs) {
+ return lhs.size() == rhs.size() &&
+ std::equal(lhs.begin(), lhs.end(), rhs.begin());
+}
+
+//! Lexicographical comparison.
+template <class T, class Alloc>
+inline bool operator < (const circular_buffer_space_optimized<T, Alloc>& lhs,
+ const circular_buffer_space_optimized<T, Alloc>& rhs) {
+ return std::lexicographical_compare(
+ lhs.begin(), lhs.end(), rhs.begin(), rhs.end());
+}
+
+#if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING) || BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1310))
+
+//! Test two space optimized circular buffers for non-equality.
+template <class T, class Alloc>
+inline bool operator != (const circular_buffer_space_optimized<T, Alloc>& lhs,
+ const circular_buffer_space_optimized<T, Alloc>& rhs) {
+ return !(lhs == rhs);
+}
+
+//! Lexicographical comparison.
+template <class T, class Alloc>
+inline bool operator > (const circular_buffer_space_optimized<T, Alloc>& lhs,
+ const circular_buffer_space_optimized<T, Alloc>& rhs) {
+ return rhs < lhs;
+}
+
+//! Lexicographical comparison.
+template <class T, class Alloc>
+inline bool operator <= (const circular_buffer_space_optimized<T, Alloc>& lhs,
+ const circular_buffer_space_optimized<T, Alloc>& rhs) {
+ return !(rhs < lhs);
+}
+
+//! Lexicographical comparison.
+template <class T, class Alloc>
+inline bool operator >= (const circular_buffer_space_optimized<T, Alloc>& lhs,
+ const circular_buffer_space_optimized<T, Alloc>& rhs) {
+ return !(lhs < rhs);
+}
+
+//! Swap the contents of two space optimized circular buffers.
+template <class T, class Alloc>
+inline void swap(circular_buffer_space_optimized<T, Alloc>& lhs,
+ circular_buffer_space_optimized<T, Alloc>& rhs) {
+ lhs.swap(rhs);
+}
+
+#endif // #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING) || BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1310))
+
+} // namespace boost
+
+#endif // #if !defined(BOOST_CIRCULAR_BUFFER_SPACE_OPTIMIZED_HPP)