ecency-mobile/ios/Pods/boost-for-react-native/boost/container/detail/utilities.hpp

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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2005-2013. 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/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_CONTAINER_DETAIL_UTILITIES_HPP
#define BOOST_CONTAINER_DETAIL_UTILITIES_HPP
#if defined(_MSC_VER)
# pragma once
#endif
#include <boost/container/detail/config_begin.hpp>
#include <boost/container/detail/workaround.hpp>
#include <cstdio>
#include <cstring> //for ::memmove / ::memcpy
#include <boost/type_traits/is_pointer.hpp>
#include <boost/type_traits/is_enum.hpp>
#include <boost/type_traits/is_class.hpp>
#include <boost/type_traits/is_integral.hpp>
#include <boost/type_traits/is_floating_point.hpp>
#include <boost/type_traits/is_copy_constructible.hpp>
#include <boost/type_traits/has_trivial_destructor.hpp>
#include <boost/type_traits/has_trivial_copy.hpp>
#include <boost/type_traits/has_trivial_assign.hpp>
#include <boost/type_traits/is_pod.hpp>
#include <boost/move/core.hpp>
#include <boost/move/utility_core.hpp>
#include <boost/move/iterator.hpp>
#include <boost/assert.hpp>
#include <boost/container/throw_exception.hpp>
#include <boost/container/detail/mpl.hpp>
#include <boost/container/detail/type_traits.hpp>
#include <boost/container/allocator_traits.hpp>
#include <boost/core/no_exceptions_support.hpp>
#include <boost/container/detail/memory_util.hpp>
#include <boost/intrusive/pointer_traits.hpp>
#include <boost/aligned_storage.hpp>
#include <iterator>
#include <utility> //std::distance
namespace boost {
namespace container {
//////////////////////////////////////////////////////////////////////////////
//
// swap
//
//////////////////////////////////////////////////////////////////////////////
namespace container_swap {
template<class T, bool IsClass = boost::is_class<T>::value >
struct has_member_swap
{
static const bool value = boost::container::container_detail::
has_member_function_callable_with_swap<T, T &>::value;
};
template<class T>
struct has_member_swap<T, false>
{
static const bool value = false;
};
} //namespace container_swap {
template<class T> inline
typename container_detail::enable_if_c
<container_swap::has_member_swap<T>::value, void>::type
swap_dispatch(T &left, T &right) //swap using member swap
{
left.swap(right); // may throw
}
template<class T> inline
typename container_detail::enable_if_c
<!container_swap::has_member_swap<T>::value/* && boost::has_move_emulation_enabled<T>::value*/, void>::type
swap_dispatch(T &left, T &right)
{
T temp(boost::move(left)); // may throw
left = boost::move(right); // may throw
right = boost::move(temp); // may throw
}
/*
template<class T> inline
typename container_detail::enable_if_c
<!container_swap::has_member_swap<T>::value && !boost::has_move_emulation_enabled<T>::value, void>::type
swap_dispatch(T &left, T &right)
{
using std::swap;
swap(left, right); // may throw
}
*/
namespace container_detail {
template <typename T>
inline T* addressof(T& obj)
{
return static_cast<T*>(
static_cast<void*>(
const_cast<char*>(
&reinterpret_cast<const char&>(obj)
)));
}
template<class T>
const T &max_value(const T &a, const T &b)
{ return a > b ? a : b; }
template<class T>
const T &min_value(const T &a, const T &b)
{ return a < b ? a : b; }
enum NextCapacityOption { NextCapacityDouble, NextCapacity60Percent };
template<class SizeType, NextCapacityOption Option>
struct next_capacity_calculator;
template<class SizeType>
struct next_capacity_calculator<SizeType, NextCapacityDouble>
{
static SizeType get(const SizeType max_size
,const SizeType capacity
,const SizeType n)
{
const SizeType remaining = max_size - capacity;
if ( remaining < n )
boost::container::throw_length_error("get_next_capacity, allocator's max_size reached");
const SizeType additional = max_value(n, capacity);
return ( remaining < additional ) ? max_size : ( capacity + additional );
}
};
template<class SizeType>
struct next_capacity_calculator<SizeType, NextCapacity60Percent>
{
static SizeType get(const SizeType max_size
,const SizeType capacity
,const SizeType n)
{
const SizeType remaining = max_size - capacity;
if ( remaining < n )
boost::container::throw_length_error("get_next_capacity, allocator's max_size reached");
const SizeType m3 = max_size/3;
if (capacity < m3)
return capacity + max_value(3*(capacity+1)/5, n);
if (capacity < m3*2)
return capacity + max_value((capacity+1)/2, n);
return max_size;
}
};
template <class T>
inline T* to_raw_pointer(T* p)
{ return p; }
template <class Pointer>
inline typename boost::intrusive::pointer_traits<Pointer>::element_type*
to_raw_pointer(const Pointer &p)
{ return boost::container::container_detail::to_raw_pointer(p.operator->()); }
template <class T>
inline T* iterator_to_pointer(T* i)
{ return i; }
template <class Iterator>
inline typename std::iterator_traits<Iterator>::pointer
iterator_to_pointer(const Iterator &i)
{ return i.operator->(); }
template <class Iterator>
inline
typename boost::intrusive::pointer_traits
<typename std::iterator_traits<Iterator>::pointer>::element_type*
iterator_to_raw_pointer(const Iterator &i)
{ return (to_raw_pointer)((iterator_to_pointer)(i)); }
template<class AllocatorType>
inline void swap_alloc(AllocatorType &, AllocatorType &, container_detail::false_type)
BOOST_CONTAINER_NOEXCEPT
{}
template<class AllocatorType>
inline void swap_alloc(AllocatorType &l, AllocatorType &r, container_detail::true_type)
{ boost::container::swap_dispatch(l, r); }
template<class AllocatorType>
inline void assign_alloc(AllocatorType &, const AllocatorType &, container_detail::false_type)
BOOST_CONTAINER_NOEXCEPT
{}
template<class AllocatorType>
inline void assign_alloc(AllocatorType &l, const AllocatorType &r, container_detail::true_type)
{ l = r; }
template<class AllocatorType>
inline void move_alloc(AllocatorType &, AllocatorType &, container_detail::false_type)
BOOST_CONTAINER_NOEXCEPT
{}
template<class AllocatorType>
inline void move_alloc(AllocatorType &l, AllocatorType &r, container_detail::true_type)
{ l = ::boost::move(r); }
//Rounds "orig_size" by excess to round_to bytes
template<class SizeType>
inline SizeType get_rounded_size(SizeType orig_size, SizeType round_to)
{
return ((orig_size-1)/round_to+1)*round_to;
}
template <std::size_t OrigSize, std::size_t RoundTo>
struct ct_rounded_size
{
enum { value = ((OrigSize-1)/RoundTo+1)*RoundTo };
};
template<class I>
struct are_elements_contiguous
{
static const bool value = false;
};
/////////////////////////
// raw pointers
/////////////////////////
template<class T>
struct are_elements_contiguous<T*>
{
static const bool value = true;
};
/////////////////////////
// predeclarations
/////////////////////////
#ifndef BOOST_CONTAINER_VECTOR_ITERATOR_IS_POINTER
template<class Pointer>
class vector_iterator;
template<class Pointer>
class vector_const_iterator;
#endif //BOOST_CONTAINER_VECTOR_ITERATOR_IS_POINTER
} //namespace container_detail {
} //namespace container {
namespace interprocess {
template <class PointedType, class DifferenceType, class OffsetType, std::size_t OffsetAlignment>
class offset_ptr;
} //namespace interprocess {
namespace container {
namespace container_detail {
/////////////////////////
//vector_[const_]iterator
/////////////////////////
#ifndef BOOST_CONTAINER_VECTOR_ITERATOR_IS_POINTER
template<class Pointer>
struct are_elements_contiguous<boost::container::container_detail::vector_iterator<Pointer> >
{
static const bool value = true;
};
template<class Pointer>
struct are_elements_contiguous<boost::container::container_detail::vector_const_iterator<Pointer> >
{
static const bool value = true;
};
#endif //BOOST_CONTAINER_VECTOR_ITERATOR_IS_POINTER
/////////////////////////
// offset_ptr
/////////////////////////
template <class PointedType, class DifferenceType, class OffsetType, std::size_t OffsetAlignment>
struct are_elements_contiguous< ::boost::interprocess::offset_ptr<PointedType, DifferenceType, OffsetType, OffsetAlignment> >
{
static const bool value = true;
};
template <typename I, typename O>
struct are_contiguous_and_same
{
static const bool is_same_io =
is_same< typename remove_const< typename ::std::iterator_traits<I>::value_type >::type
, typename ::std::iterator_traits<O>::value_type
>::value;
static const bool value = is_same_io &&
are_elements_contiguous<I>::value &&
are_elements_contiguous<O>::value;
};
template <typename I, typename O>
struct is_memtransfer_copy_assignable
{
static const bool value = are_contiguous_and_same<I, O>::value &&
boost::has_trivial_assign< typename ::std::iterator_traits<I>::value_type >::value;
};
template <typename I, typename O>
struct is_memtransfer_copy_constructible
{
static const bool value = are_contiguous_and_same<I, O>::value &&
boost::has_trivial_copy< typename ::std::iterator_traits<I>::value_type >::value;
};
template <typename I, typename O, typename R>
struct enable_if_memtransfer_copy_constructible
: public enable_if_c<container_detail::is_memtransfer_copy_constructible<I, O>::value, R>
{};
template <typename I, typename O, typename R>
struct disable_if_memtransfer_copy_constructible
: public enable_if_c<!container_detail::is_memtransfer_copy_constructible<I, O>::value, R>
{};
template <typename I, typename O, typename R>
struct enable_if_memtransfer_copy_assignable
: public enable_if_c<container_detail::is_memtransfer_copy_assignable<I, O>::value, R>
{};
template <typename I, typename O, typename R>
struct disable_if_memtransfer_copy_assignable
: public enable_if_c<!container_detail::is_memtransfer_copy_assignable<I, O>::value, R>
{};
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline F memmove(I f, I l, F r) BOOST_CONTAINER_NOEXCEPT
{
typedef typename std::iterator_traits<I>::value_type value_type;
typename std::iterator_traits<I>::difference_type n = std::distance(f, l);
::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n);
std::advance(r, n);
return r;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
F memmove_n(I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{
typedef typename std::iterator_traits<I>::value_type value_type;
::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n);
std::advance(r, n);
return r;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
I memmove_n_source(I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{
typedef typename std::iterator_traits<I>::value_type value_type;
::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n);
std::advance(f, n);
return f;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
I memmove_n_source_dest(I f, typename std::iterator_traits<I>::difference_type n, F &r) BOOST_CONTAINER_NOEXCEPT
{
typedef typename std::iterator_traits<I>::value_type value_type;
::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n);
std::advance(f, n);
std::advance(r, n);
return f;
}
template <typename O>
struct is_memzero_initializable
{
typedef typename ::std::iterator_traits<O>::value_type value_type;
static const bool value = are_elements_contiguous<O>::value &&
( ::boost::is_integral<value_type>::value || ::boost::is_enum<value_type>::value
#if defined(BOOST_CONTAINER_MEMZEROED_POINTER_IS_NULL)
|| ::boost::is_pointer<value_type>::value
#endif
#if defined(BOOST_CONTAINER_MEMZEROED_FLOATING_POINT_IS_ZERO)
|| ::boost::is_floating_point<value_type>::value
#endif
#if defined(BOOST_CONTAINER_MEMZEROED_FLOATING_POINT_IS_ZERO) && defined(BOOST_CONTAINER_MEMZEROED_POINTER_IS_NULL)
|| ::boost::is_pod<value_type>::value
#endif
);
};
template <typename O, typename R>
struct enable_if_memzero_initializable
: public enable_if_c<container_detail::is_memzero_initializable<O>::value, R>
{};
template <typename O, typename R>
struct disable_if_memzero_initializable
: public enable_if_c<!container_detail::is_memzero_initializable<O>::value, R>
{};
} //namespace container_detail {
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_move_alloc
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; f != l; ++r, ++f)
//! allocator_traits::construct(a, &*r, boost::move(*f));
//! \endcode
//!
//! <b>Returns</b>: r
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_constructible<I, F, F>::type
uninitialized_move_alloc(A &a, I f, I l, F r)
{
F back = r;
BOOST_TRY{
while (f != l) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r), boost::move(*f));
++f; ++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return r;
}
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_constructible<I, F, F>::type
uninitialized_move_alloc(A &, I f, I l, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove(f, l, r); }
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_move_alloc_n
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; n--; ++r, ++f)
//! allocator_traits::construct(a, &*r, boost::move(*f));
//! \endcode
//!
//! <b>Returns</b>: r
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_constructible<I, F, F>::type
uninitialized_move_alloc_n(A &a, I f, typename std::iterator_traits<I>::difference_type n, F r)
{
F back = r;
BOOST_TRY{
while (n--) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r), boost::move(*f));
++f; ++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return r;
}
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_constructible<I, F, F>::type
uninitialized_move_alloc_n(A &, I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_move_alloc_n_source
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; n--; ++r, ++f)
//! allocator_traits::construct(a, &*r, boost::move(*f));
//! \endcode
//!
//! <b>Returns</b>: f (after incremented)
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_constructible<I, F, I>::type
uninitialized_move_alloc_n_source(A &a, I f, typename std::iterator_traits<I>::difference_type n, F r)
{
F back = r;
BOOST_TRY{
while (n--) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r), boost::move(*f));
++f; ++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return f;
}
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_constructible<I, F, I>::type
uninitialized_move_alloc_n_source(A &, I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n_source(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_copy_alloc
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; f != l; ++r, ++f)
//! allocator_traits::construct(a, &*r, *f);
//! \endcode
//!
//! <b>Returns</b>: r
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_constructible<I, F, F>::type
uninitialized_copy_alloc(A &a, I f, I l, F r)
{
F back = r;
BOOST_TRY{
while (f != l) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r), *f);
++f; ++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return r;
}
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_constructible<I, F, F>::type
uninitialized_copy_alloc(A &, I f, I l, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove(f, l, r); }
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_copy_alloc_n
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; n--; ++r, ++f)
//! allocator_traits::construct(a, &*r, *f);
//! \endcode
//!
//! <b>Returns</b>: r
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_constructible<I, F, F>::type
uninitialized_copy_alloc_n(A &a, I f, typename std::iterator_traits<I>::difference_type n, F r)
{
F back = r;
BOOST_TRY{
while (n--) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r), *f);
++f; ++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return r;
}
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_constructible<I, F, F>::type
uninitialized_copy_alloc_n(A &, I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_copy_alloc_n_source
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; n--; ++r, ++f)
//! allocator_traits::construct(a, &*r, *f);
//! \endcode
//!
//! <b>Returns</b>: f (after incremented)
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_constructible<I, F, I>::type
uninitialized_copy_alloc_n_source(A &a, I f, typename std::iterator_traits<I>::difference_type n, F r)
{
F back = r;
BOOST_TRY{
while (n--) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r), *f);
++f; ++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return f;
}
template
<typename A,
typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_constructible<I, F, I>::type
uninitialized_copy_alloc_n_source(A &, I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n_source(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_value_init_alloc_n
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; n--; ++r, ++f)
//! allocator_traits::construct(a, &*r);
//! \endcode
//!
//! <b>Returns</b>: r
template
<typename A,
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memzero_initializable<F, F>::type
uninitialized_value_init_alloc_n(A &a, typename allocator_traits<A>::difference_type n, F r)
{
F back = r;
BOOST_TRY{
while (n--) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r));
++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return r;
}
template
<typename A,
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memzero_initializable<F, F>::type
uninitialized_value_init_alloc_n(A &, typename allocator_traits<A>::difference_type n, F r)
{
typedef typename std::iterator_traits<F>::value_type value_type;
::memset((void*)container_detail::iterator_to_raw_pointer(r), 0, sizeof(value_type)*n);
std::advance(r, n);
return r;
}
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_default_init_alloc_n
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; n--; ++r, ++f)
//! allocator_traits::construct(a, &*r);
//! \endcode
//!
//! <b>Returns</b>: r
template
<typename A,
typename F> // F models ForwardIterator
inline F uninitialized_default_init_alloc_n(A &a, typename allocator_traits<A>::difference_type n, F r)
{
F back = r;
BOOST_TRY{
while (n--) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r), default_init);
++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return r;
}
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_fill_alloc
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; f != l; ++r, ++f)
//! allocator_traits::construct(a, &*r, *f);
//! \endcode
//!
//! <b>Returns</b>: r
template
<typename A,
typename F, // F models ForwardIterator
typename T>
inline void uninitialized_fill_alloc(A &a, F f, F l, const T &t)
{
F back = f;
BOOST_TRY{
while (f != l) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(f), t);
++f;
}
}
BOOST_CATCH(...){
for (; back != l; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
}
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_fill_alloc_n
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; n--; ++r, ++f)
//! allocator_traits::construct(a, &*r, v);
//! \endcode
//!
//! <b>Returns</b>: r
template
<typename A,
typename T,
typename F> // F models ForwardIterator
inline F uninitialized_fill_alloc_n(A &a, const T &v, typename allocator_traits<A>::difference_type n, F r)
{
F back = r;
BOOST_TRY{
while (n--) {
allocator_traits<A>::construct(a, container_detail::iterator_to_raw_pointer(r), v);
++r;
}
}
BOOST_CATCH(...){
for (; back != r; ++back){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(back));
}
BOOST_RETHROW;
}
BOOST_CATCH_END
return r;
}
//////////////////////////////////////////////////////////////////////////////
//
// copy
//
//////////////////////////////////////////////////////////////////////////////
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_assignable<I, F, F>::type
copy(I f, I l, F r)
{
while (f != l) {
*r = *f;
++f; ++r;
}
return r;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_assignable<I, F, F>::type
copy(I f, I l, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove(f, l, r); }
//////////////////////////////////////////////////////////////////////////////
//
// copy_n
//
//////////////////////////////////////////////////////////////////////////////
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_assignable<I, F, F>::type
copy_n(I f, typename std::iterator_traits<I>::difference_type n, F r)
{
while (n--) {
*r = *f;
++f; ++r;
}
return r;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_assignable<I, F, F>::type
copy_n(I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// copy_n_source
//
//////////////////////////////////////////////////////////////////////////////
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_assignable<I, F, I>::type
copy_n_source(I f, typename std::iterator_traits<I>::difference_type n, F r)
{
while (n--) {
*r = *f;
++f; ++r;
}
return f;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_assignable<I, F, I>::type
copy_n_source(I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n_source(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// copy_n_source_dest
//
//////////////////////////////////////////////////////////////////////////////
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_assignable<I, F, I>::type
copy_n_source_dest(I f, typename std::iterator_traits<I>::difference_type n, F &r)
{
while (n--) {
*r = *f;
++f; ++r;
}
return f;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_assignable<I, F, I>::type
copy_n_source_dest(I f, typename std::iterator_traits<I>::difference_type n, F &r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n_source_dest(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// move
//
//////////////////////////////////////////////////////////////////////////////
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_assignable<I, F, F>::type
move(I f, I l, F r)
{
while (f != l) {
*r = ::boost::move(*f);
++f; ++r;
}
return r;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_assignable<I, F, F>::type
move(I f, I l, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove(f, l, r); }
//////////////////////////////////////////////////////////////////////////////
//
// move_n
//
//////////////////////////////////////////////////////////////////////////////
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_assignable<I, F, F>::type
move_n(I f, typename std::iterator_traits<I>::difference_type n, F r)
{
while (n--) {
*r = ::boost::move(*f);
++f; ++r;
}
return r;
}
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_assignable<I, F, F>::type
move_n(I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// move_n_source
//
//////////////////////////////////////////////////////////////////////////////
template
<typename I // I models InputIterator
,typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_assignable<I, F, I>::type
move_n_source(I f, typename std::iterator_traits<I>::difference_type n, F r)
{
while (n--) {
*r = ::boost::move(*f);
++f; ++r;
}
return f;
}
template
<typename I // I models InputIterator
,typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_assignable<I, F, I>::type
move_n_source(I f, typename std::iterator_traits<I>::difference_type n, F r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n_source(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// move_n_source_dest
//
//////////////////////////////////////////////////////////////////////////////
template
<typename I // I models InputIterator
,typename F> // F models ForwardIterator
inline typename container_detail::disable_if_memtransfer_copy_assignable<I, F, I>::type
move_n_source_dest(I f, typename std::iterator_traits<I>::difference_type n, F &r)
{
while (n--) {
*r = ::boost::move(*f);
++f; ++r;
}
return f;
}
template
<typename I // I models InputIterator
,typename F> // F models ForwardIterator
inline typename container_detail::enable_if_memtransfer_copy_assignable<I, F, I>::type
move_n_source_dest(I f, typename std::iterator_traits<I>::difference_type n, F &r) BOOST_CONTAINER_NOEXCEPT
{ return container_detail::memmove_n_source_dest(f, n, r); }
//////////////////////////////////////////////////////////////////////////////
//
// destroy_n
//
//////////////////////////////////////////////////////////////////////////////
template
<typename A
,typename I> // I models InputIterator
inline void destroy_alloc_n(A &a, I f, typename std::iterator_traits<I>::difference_type n
,typename boost::container::container_detail::enable_if_c
< !boost::has_trivial_destructor<typename std::iterator_traits<I>::value_type>::value >::type* = 0)
{
while(n--){
allocator_traits<A>::destroy(a, container_detail::iterator_to_raw_pointer(f++));
}
}
template
<typename A
,typename I> // I models InputIterator
inline void destroy_alloc_n(A &, I, typename std::iterator_traits<I>::difference_type
,typename boost::container::container_detail::enable_if_c
< boost::has_trivial_destructor<typename std::iterator_traits<I>::value_type>::value >::type* = 0)
{}
//////////////////////////////////////////////////////////////////////////////
//
// deep_swap_alloc_n
//
//////////////////////////////////////////////////////////////////////////////
template
<std::size_t MaxTmpBytes
,typename A
,typename F // F models ForwardIterator
,typename G // G models ForwardIterator
>
inline typename container_detail::disable_if_memtransfer_copy_assignable<F, G, void>::type
deep_swap_alloc_n( A &a, F short_range_f, typename allocator_traits<A>::size_type n_i
, G large_range_f, typename allocator_traits<A>::size_type n_j)
{
typename allocator_traits<A>::size_type n = 0;
for (; n != n_i ; ++short_range_f, ++large_range_f, ++n){
boost::container::swap_dispatch(*short_range_f, *large_range_f);
}
boost::container::uninitialized_move_alloc_n(a, large_range_f, n_j - n_i, short_range_f); // may throw
boost::container::destroy_alloc_n(a, large_range_f, n_j - n_i);
}
static const std::size_t DeepSwapAllocNMaxStorage = std::size_t(1) << std::size_t(11); //2K bytes
template
<std::size_t MaxTmpBytes
,typename A
,typename F // F models ForwardIterator
,typename G // G models ForwardIterator
>
inline typename container_detail::enable_if_c
< container_detail::is_memtransfer_copy_assignable<F, G>::value && (MaxTmpBytes <= DeepSwapAllocNMaxStorage) && false
, void>::type
deep_swap_alloc_n( A &a, F short_range_f, typename allocator_traits<A>::size_type n_i
, G large_range_f, typename allocator_traits<A>::size_type n_j)
{
typedef typename allocator_traits<A>::value_type value_type;
typedef typename boost::aligned_storage
<MaxTmpBytes, container_detail::alignment_of<value_type>::value>::type storage_type;
storage_type storage;
const std::size_t n_i_bytes = sizeof(value_type)*n_i;
void *const large_ptr = static_cast<void*>(container_detail::iterator_to_raw_pointer(large_range_f));
void *const short_ptr = static_cast<void*>(container_detail::iterator_to_raw_pointer(short_range_f));
void *const stora_ptr = static_cast<void*>(container_detail::iterator_to_raw_pointer(storage));
::memcpy(stora_ptr, large_ptr, n_i_bytes);
::memcpy(large_ptr, short_ptr, n_i_bytes);
::memcpy(short_ptr, stora_ptr, n_i_bytes);
std::advance(large_range_f, n_i);
std::advance(short_range_f, n_i);
boost::container::uninitialized_move_alloc_n(a, large_range_f, n_j - n_i, short_range_f); // may throw
boost::container::destroy_alloc_n(a, large_range_f, n_j - n_i);
}
template
<std::size_t MaxTmpBytes
,typename A
,typename F // F models ForwardIterator
,typename G // G models ForwardIterator
>
inline typename container_detail::enable_if_c
< container_detail::is_memtransfer_copy_assignable<F, G>::value && true//(MaxTmpBytes > DeepSwapAllocNMaxStorage)
, void>::type
deep_swap_alloc_n( A &a, F short_range_f, typename allocator_traits<A>::size_type n_i
, G large_range_f, typename allocator_traits<A>::size_type n_j)
{
typedef typename allocator_traits<A>::value_type value_type;
typedef typename boost::aligned_storage
<DeepSwapAllocNMaxStorage, container_detail::alignment_of<value_type>::value>::type storage_type;
storage_type storage;
const std::size_t sizeof_storage = sizeof(storage);
std::size_t n_i_bytes = sizeof(value_type)*n_i;
char *large_ptr = static_cast<char*>(static_cast<void*>(container_detail::iterator_to_raw_pointer(large_range_f)));
char *short_ptr = static_cast<char*>(static_cast<void*>(container_detail::iterator_to_raw_pointer(short_range_f)));
char *stora_ptr = static_cast<char*>(static_cast<void*>(&storage));
std::size_t szt_times = n_i_bytes/sizeof_storage;
const std::size_t szt_rem = n_i_bytes%sizeof_storage;
//Loop unrolling using Duff's device, as it seems it helps on some architectures
const std::size_t Unroll = 4;
std::size_t n = (szt_times + (Unroll-1))/Unroll;
const std::size_t branch_number = (!szt_times)*Unroll + (szt_times % Unroll);
switch(branch_number){
case 4:
break;
case 0: do{
::memcpy(stora_ptr, large_ptr, sizeof_storage);
::memcpy(large_ptr, short_ptr, sizeof_storage);
::memcpy(short_ptr, stora_ptr, sizeof_storage);
large_ptr += sizeof_storage;
short_ptr += sizeof_storage;
BOOST_CONTAINER_FALLTHOUGH
case 3:
::memcpy(stora_ptr, large_ptr, sizeof_storage);
::memcpy(large_ptr, short_ptr, sizeof_storage);
::memcpy(short_ptr, stora_ptr, sizeof_storage);
large_ptr += sizeof_storage;
short_ptr += sizeof_storage;
BOOST_CONTAINER_FALLTHOUGH
case 2:
::memcpy(stora_ptr, large_ptr, sizeof_storage);
::memcpy(large_ptr, short_ptr, sizeof_storage);
::memcpy(short_ptr, stora_ptr, sizeof_storage);
large_ptr += sizeof_storage;
short_ptr += sizeof_storage;
BOOST_CONTAINER_FALLTHOUGH
case 1:
::memcpy(stora_ptr, large_ptr, sizeof_storage);
::memcpy(large_ptr, short_ptr, sizeof_storage);
::memcpy(short_ptr, stora_ptr, sizeof_storage);
large_ptr += sizeof_storage;
short_ptr += sizeof_storage;
} while(--n);
}
::memcpy(stora_ptr, large_ptr, szt_rem);
::memcpy(large_ptr, short_ptr, szt_rem);
::memcpy(short_ptr, stora_ptr, szt_rem);
std::advance(large_range_f, n_i);
std::advance(short_range_f, n_i);
boost::container::uninitialized_move_alloc_n(a, large_range_f, n_j - n_i, short_range_f); // may throw
boost::container::destroy_alloc_n(a, large_range_f, n_j - n_i);
}
//////////////////////////////////////////////////////////////////////////////
//
// copy_assign_range_alloc_n
//
//////////////////////////////////////////////////////////////////////////////
template
<typename A
,typename I // F models InputIterator
,typename O // G models OutputIterator
>
void copy_assign_range_alloc_n( A &a, I inp_start, typename allocator_traits<A>::size_type n_i
, O out_start, typename allocator_traits<A>::size_type n_o )
{
if (n_o < n_i){
inp_start = boost::container::copy_n_source_dest(inp_start, n_o, out_start); // may throw
boost::container::uninitialized_copy_alloc_n(a, inp_start, n_i - n_o, out_start);// may throw
}
else{
out_start = boost::container::copy_n(inp_start, n_i, out_start); // may throw
boost::container::destroy_alloc_n(a, out_start, n_o - n_i);
}
}
//////////////////////////////////////////////////////////////////////////////
//
// move_assign_range_alloc_n
//
//////////////////////////////////////////////////////////////////////////////
template
<typename A
,typename I // F models InputIterator
,typename O // G models OutputIterator
>
void move_assign_range_alloc_n( A &a, I inp_start, typename allocator_traits<A>::size_type n_i
, O out_start, typename allocator_traits<A>::size_type n_o )
{
if (n_o < n_i){
inp_start = boost::container::move_n_source_dest(inp_start, n_o, out_start); // may throw
boost::container::uninitialized_move_alloc_n(a, inp_start, n_i - n_o, out_start); // may throw
}
else{
out_start = boost::container::move_n(inp_start, n_i, out_start); // may throw
boost::container::destroy_alloc_n(a, out_start, n_o - n_i);
}
}
} //namespace container {
} //namespace boost {
#include <boost/container/detail/config_end.hpp>
#endif //#ifndef BOOST_CONTAINER_DETAIL_UTILITIES_HPP