mirror of
https://github.com/shadps4-emu/ext-boost.git
synced 2024-11-23 11:29:49 +00:00
522 lines
18 KiB
C++
522 lines
18 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// (C) Copyright Ion Gaztanaga 2013-2013
|
|
//
|
|
// 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_OPTIONS_HPP
|
|
#define BOOST_CONTAINER_OPTIONS_HPP
|
|
|
|
#ifndef BOOST_CONFIG_HPP
|
|
# include <boost/config.hpp>
|
|
#endif
|
|
|
|
#if defined(BOOST_HAS_PRAGMA_ONCE)
|
|
# pragma once
|
|
#endif
|
|
|
|
#include <boost/container/detail/config_begin.hpp>
|
|
#include <boost/container/container_fwd.hpp>
|
|
#include <boost/intrusive/pack_options.hpp>
|
|
#include <boost/static_assert.hpp>
|
|
|
|
namespace boost {
|
|
namespace container {
|
|
|
|
////////////////////////////////////////////////////////////////
|
|
//
|
|
//
|
|
// OPTIONS FOR ASSOCIATIVE TREE-BASED CONTAINERS
|
|
//
|
|
//
|
|
////////////////////////////////////////////////////////////////
|
|
|
|
//! Enumeration used to configure ordered associative containers
|
|
//! with a concrete tree implementation.
|
|
enum tree_type_enum
|
|
{
|
|
red_black_tree,
|
|
avl_tree,
|
|
scapegoat_tree,
|
|
splay_tree
|
|
};
|
|
|
|
#if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
template<tree_type_enum TreeType, bool OptimizeSize>
|
|
struct tree_opt
|
|
{
|
|
static const boost::container::tree_type_enum tree_type = TreeType;
|
|
static const bool optimize_size = OptimizeSize;
|
|
};
|
|
|
|
typedef tree_opt<red_black_tree, true> tree_assoc_defaults;
|
|
|
|
#endif //!defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//!This option setter specifies the underlying tree type
|
|
//!(red-black, AVL, Scapegoat or Splay) for ordered associative containers
|
|
BOOST_INTRUSIVE_OPTION_CONSTANT(tree_type, tree_type_enum, TreeType, tree_type)
|
|
|
|
//!This option setter specifies if node size is optimized
|
|
//!storing rebalancing data masked into pointers for ordered associative containers
|
|
BOOST_INTRUSIVE_OPTION_CONSTANT(optimize_size, bool, Enabled, optimize_size)
|
|
|
|
//! Helper metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::set, \c boost::container::multiset
|
|
//! \c boost::container::map and \c boost::container::multimap.
|
|
//! Supported options are: \c boost::container::optimize_size and \c boost::container::tree_type
|
|
#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED) || defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
template<class ...Options>
|
|
#else
|
|
template<class O1 = void, class O2 = void, class O3 = void, class O4 = void>
|
|
#endif
|
|
struct tree_assoc_options
|
|
{
|
|
/// @cond
|
|
typedef typename ::boost::intrusive::pack_options
|
|
< tree_assoc_defaults,
|
|
#if !defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type packed_options;
|
|
typedef tree_opt<packed_options::tree_type, packed_options::optimize_size> implementation_defined;
|
|
/// @endcond
|
|
typedef implementation_defined type;
|
|
};
|
|
|
|
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
|
|
|
|
//! Helper alias metafunction to combine options into a single type to be used
|
|
//! by tree-based associative containers
|
|
template<class ...Options>
|
|
using tree_assoc_options_t = typename boost::container::tree_assoc_options<Options...>::type;
|
|
|
|
#endif
|
|
|
|
|
|
////////////////////////////////////////////////////////////////
|
|
//
|
|
//
|
|
// OPTIONS FOR ASSOCIATIVE HASH-BASED CONTAINERS
|
|
//
|
|
//
|
|
////////////////////////////////////////////////////////////////
|
|
|
|
#if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
template<bool StoreHash>
|
|
struct hash_opt
|
|
{
|
|
static const bool store_hash = StoreHash;
|
|
};
|
|
|
|
typedef hash_opt<false> hash_assoc_defaults;
|
|
|
|
#endif //!defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//!This option setter specifies if node size is optimized
|
|
//!storing rebalancing data masked into pointers for ordered associative containers
|
|
BOOST_INTRUSIVE_OPTION_CONSTANT(store_hash, bool, Enabled, store_hash)
|
|
|
|
//! Helper metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::hash_set, \c boost::container::hash_multiset
|
|
//! \c boost::container::hash_map and \c boost::container::hash_multimap.
|
|
//! Supported options are: \c boost::container::store_hash
|
|
#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED) || defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
template<class ...Options>
|
|
#else
|
|
template<class O1 = void, class O2 = void, class O3 = void, class O4 = void>
|
|
#endif
|
|
struct hash_assoc_options
|
|
{
|
|
/// @cond
|
|
typedef typename ::boost::intrusive::pack_options
|
|
< hash_assoc_defaults,
|
|
#if !defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type packed_options;
|
|
typedef hash_opt<packed_options::store_hash> implementation_defined;
|
|
/// @endcond
|
|
typedef implementation_defined type;
|
|
};
|
|
|
|
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
|
|
|
|
//! Helper alias metafunction to combine options into a single type to be used
|
|
//! by hash-based associative containers
|
|
template<class ...Options>
|
|
using hash_assoc_options_t = typename boost::container::hash_assoc_options<Options...>::type;
|
|
|
|
#endif
|
|
|
|
////////////////////////////////////////////////////////////////
|
|
//
|
|
//
|
|
// OPTIONS FOR VECTOR-BASED CONTAINERS
|
|
//
|
|
//
|
|
////////////////////////////////////////////////////////////////
|
|
|
|
#if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
template<class T, class Default>
|
|
struct default_if_void
|
|
{
|
|
typedef T type;
|
|
};
|
|
|
|
template<class Default>
|
|
struct default_if_void<void, Default>
|
|
{
|
|
typedef Default type;
|
|
};
|
|
|
|
#endif
|
|
|
|
#if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
template<class AllocTraits, class StoredSizeType>
|
|
struct get_stored_size_type_with_alloctraits
|
|
{
|
|
typedef StoredSizeType type;
|
|
};
|
|
|
|
template<class AllocTraits>
|
|
struct get_stored_size_type_with_alloctraits<AllocTraits, void>
|
|
{
|
|
typedef typename AllocTraits::size_type type;
|
|
};
|
|
|
|
template<class GrowthType, class StoredSizeType>
|
|
struct vector_opt
|
|
{
|
|
typedef GrowthType growth_factor_type;
|
|
typedef StoredSizeType stored_size_type;
|
|
|
|
template<class AllocTraits>
|
|
struct get_stored_size_type
|
|
: get_stored_size_type_with_alloctraits<AllocTraits, StoredSizeType>
|
|
{};
|
|
};
|
|
|
|
class default_next_capacity;
|
|
|
|
typedef vector_opt<void, void> vector_null_opt;
|
|
|
|
#else //!defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//!This growth factor argument specifies that the container should increase it's
|
|
//!capacity a 50% when existing capacity is exhausted.
|
|
struct growth_factor_50{};
|
|
|
|
//!This growth factor argument specifies that the container should increase it's
|
|
//!capacity a 60% when existing capacity is exhausted.
|
|
struct growth_factor_60{};
|
|
|
|
//!This growth factor argument specifies that the container should increase it's
|
|
//!capacity a 100% (doubling its capacity) when existing capacity is exhausted.
|
|
struct growth_factor_100{};
|
|
|
|
#endif //!defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//!This option setter specifies the growth factor strategy of the underlying vector.
|
|
//!
|
|
//!\tparam GrowthFactor A function object that has the following signature:<br/><br/>
|
|
//!`template<class SizeType>`<br/>
|
|
//!`SizeType operator()(SizeType cur_cap, SizeType add_min_cap, SizeType max_cap) const;`.<br/><br/>
|
|
//!`cur_cap` is the current capacity, `add_min_cap` is the minimum additional capacity
|
|
//!we want to achieve and `max_cap` is the maximum capacity that the allocator or other
|
|
//!factors allow. The implementation should return a value between `cur_cap` + `add_min_cap`
|
|
//!and `max_cap`. `cur_cap` + `add_min_cap` is guaranteed not to overflow/wraparound,
|
|
//! but the implementation should handle wraparound produced by the growth factor.
|
|
//!
|
|
//!Predefined growth factors that can be passed as arguments to this option are:
|
|
//!\c boost::container::growth_factor_50
|
|
//!\c boost::container::growth_factor_60
|
|
//!\c boost::container::growth_factor_100
|
|
//!
|
|
//!If this option is not specified, a default will be used by the container.
|
|
BOOST_INTRUSIVE_OPTION_TYPE(growth_factor, GrowthFactor, GrowthFactor, growth_factor_type)
|
|
|
|
//!This option specifies the unsigned integer type that a user wants the container
|
|
//!to use to hold size-related information inside a container (e.g. current size, current capacity).
|
|
//!
|
|
//!\tparam StoredSizeType An unsigned integer type. It shall be smaller than than the size
|
|
//! of the size_type deduced from `allocator_traits<A>::size_type` or the same type.
|
|
//!
|
|
//!If the maximum capacity() to be used is limited, a user can try to use 8-bit, 16-bit
|
|
//!(e.g. in 32-bit machines), or 32-bit size types (e.g. in a 64 bit machine) to see if some
|
|
//!memory can be saved for empty vectors. This could potentially performance benefits due to better
|
|
//!cache usage.
|
|
//!
|
|
//!Note that alignment requirements can disallow theoretical space savings. Example:
|
|
//!\c vector holds a pointer and two size types (for size and capacity), in a 32 bit machine
|
|
//!a 8 bit size type (total size: 4 byte pointer + 2 x 1 byte sizes = 6 bytes)
|
|
//!will not save space when comparing two 16-bit size types because usually
|
|
//!a 32 bit alignment is required for vector and the size will be rounded to 8 bytes. In a 64-bit
|
|
//!machine a 16 bit size type does not usually save memory when comparing to a 32-bit size type.
|
|
//!Measure the size of the resulting container and do not assume a smaller \c stored_size
|
|
//!will always lead to a smaller sizeof(container).
|
|
//!
|
|
//!If a user tries to insert more elements than representable by \c stored_size, vector
|
|
//!will throw a length_error.
|
|
//!
|
|
//!If this option is not specified, `allocator_traits<A>::size_type` (usually std::size_t) will
|
|
//!be used to store size-related information inside the container.
|
|
BOOST_INTRUSIVE_OPTION_TYPE(stored_size, StoredSizeType, StoredSizeType, stored_size_type)
|
|
|
|
//! Helper metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::vector.
|
|
//! Supported options are: \c boost::container::growth_factor and \c boost::container::stored_size
|
|
#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED) || defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
template<class ...Options>
|
|
#else
|
|
template<class O1 = void, class O2 = void, class O3 = void, class O4 = void>
|
|
#endif
|
|
struct vector_options
|
|
{
|
|
/// @cond
|
|
typedef typename ::boost::intrusive::pack_options
|
|
< vector_null_opt,
|
|
#if !defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type packed_options;
|
|
typedef vector_opt< typename packed_options::growth_factor_type
|
|
, typename packed_options::stored_size_type> implementation_defined;
|
|
/// @endcond
|
|
typedef implementation_defined type;
|
|
};
|
|
|
|
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
|
|
|
|
//! Helper alias metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::vector.
|
|
//! Supported options are: \c boost::container::growth_factor and \c boost::container::stored_size
|
|
template<class ...Options>
|
|
using vector_options_t = typename boost::container::vector_options<Options...>::type;
|
|
|
|
#endif
|
|
|
|
////////////////////////////////////////////////////////////////
|
|
//
|
|
//
|
|
// OPTIONS FOR SMALL-VECTOR CONTAINER
|
|
//
|
|
//
|
|
////////////////////////////////////////////////////////////////
|
|
|
|
//! This option specifies the desired alignment for the value_type stored
|
|
//! in the container.
|
|
//! A value zero represents the natural alignment.
|
|
//!
|
|
//!\tparam Alignment An unsigned integer value. Must be power of two.
|
|
BOOST_INTRUSIVE_OPTION_CONSTANT(inplace_alignment, std::size_t, Alignment, inplace_alignment)
|
|
|
|
#if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
template<class GrowthType, std::size_t InplaceAlignment>
|
|
struct small_vector_opt
|
|
{
|
|
typedef GrowthType growth_factor_type;
|
|
static const std::size_t inplace_alignment = InplaceAlignment;
|
|
};
|
|
|
|
typedef small_vector_opt<void, 0u> small_vector_null_opt;
|
|
|
|
#endif //!defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//! Helper metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::small_vector.
|
|
//! Supported options are: \c boost::container::growth_factor and \c boost::container::inplace_alignment
|
|
#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED) || defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
template<class ...Options>
|
|
#else
|
|
template<class O1 = void, class O2 = void, class O3 = void, class O4 = void>
|
|
#endif
|
|
struct small_vector_options
|
|
{
|
|
/// @cond
|
|
typedef typename ::boost::intrusive::pack_options
|
|
< small_vector_null_opt,
|
|
#if !defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type packed_options;
|
|
typedef small_vector_opt< typename packed_options::growth_factor_type
|
|
, packed_options::inplace_alignment> implementation_defined;
|
|
/// @endcond
|
|
typedef implementation_defined type;
|
|
};
|
|
|
|
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
|
|
|
|
//! Helper alias metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::small_vector.
|
|
//! Supported options are: \c boost::container::growth_factor and \c boost::container::stored_size
|
|
template<class ...Options>
|
|
using small_vector_options_t = typename boost::container::small_vector_options<Options...>::type;
|
|
|
|
#endif
|
|
|
|
|
|
////////////////////////////////////////////////////////////////
|
|
//
|
|
//
|
|
// OPTIONS FOR STATIC-VECTOR CONTAINER
|
|
//
|
|
//
|
|
////////////////////////////////////////////////////////////////
|
|
|
|
//!This option specifies if the container will throw if in
|
|
//!the static capacity is not sufficient to hold the required
|
|
//!values. If false is specified, insufficient capacity will
|
|
//!lead to BOOST_ASSERT, and if this assertion returns, to undefined behaviour,
|
|
//!which potentially can lead to better static_vector performance.
|
|
//!The default value is true.
|
|
//!
|
|
//!\tparam ThrowOnExhaustion A boolean value. True if throw is required.
|
|
BOOST_INTRUSIVE_OPTION_CONSTANT(throw_on_overflow, bool, ThrowOnOverflow, throw_on_overflow)
|
|
|
|
#if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
template<bool ThrowOnOverflow, std::size_t InplaceAlignment>
|
|
struct static_vector_opt
|
|
{
|
|
static const bool throw_on_overflow = ThrowOnOverflow;
|
|
static const std::size_t inplace_alignment = InplaceAlignment;
|
|
};
|
|
|
|
typedef static_vector_opt<true, 0u> static_vector_null_opt;
|
|
|
|
#endif //!defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
//! Helper metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::static_vector.
|
|
//! Supported options are: \c boost::container::throw_on_overflow and \c boost::container::inplace_alignment
|
|
#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED) || defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
template<class ...Options>
|
|
#else
|
|
template<class O1 = void, class O2 = void, class O3 = void, class O4 = void>
|
|
#endif
|
|
struct static_vector_options
|
|
{
|
|
/// @cond
|
|
typedef typename ::boost::intrusive::pack_options
|
|
< static_vector_null_opt,
|
|
#if !defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type packed_options;
|
|
typedef static_vector_opt< packed_options::throw_on_overflow
|
|
, packed_options::inplace_alignment> implementation_defined;
|
|
/// @endcond
|
|
typedef implementation_defined type;
|
|
};
|
|
|
|
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
|
|
|
|
//! Helper alias metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::static_vector.
|
|
//! Supported options are: \c boost::container::growth_factor and \c boost::container::stored_size
|
|
template<class ...Options>
|
|
using static_vector_options_t = typename boost::container::static_vector_options<Options...>::type;
|
|
|
|
#endif
|
|
|
|
|
|
////////////////////////////////////////////////////////////////
|
|
//
|
|
//
|
|
// OPTIONS FOR DEQUE-BASED CONTAINERS
|
|
//
|
|
//
|
|
////////////////////////////////////////////////////////////////
|
|
|
|
#if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
|
|
|
|
template<std::size_t BlockBytes, std::size_t BlockSize>
|
|
struct deque_opt
|
|
{
|
|
static const std::size_t block_bytes = BlockBytes;
|
|
static const std::size_t block_size = BlockSize;
|
|
BOOST_STATIC_ASSERT_MSG(!(block_bytes && block_size), "block_bytes and block_size can't be specified at the same time");
|
|
};
|
|
|
|
typedef deque_opt<0u, 0u> deque_null_opt;
|
|
|
|
#endif
|
|
|
|
//! Helper metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::deque.
|
|
//! Supported options are: \c boost::container::block_bytes
|
|
#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED) || defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
template<class ...Options>
|
|
#else
|
|
template<class O1 = void, class O2 = void, class O3 = void, class O4 = void>
|
|
#endif
|
|
struct deque_options
|
|
{
|
|
/// @cond
|
|
typedef typename ::boost::intrusive::pack_options
|
|
< deque_null_opt,
|
|
#if !defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
|
|
O1, O2, O3, O4
|
|
#else
|
|
Options...
|
|
#endif
|
|
>::type packed_options;
|
|
typedef deque_opt< packed_options::block_bytes, packed_options::block_size > implementation_defined;
|
|
/// @endcond
|
|
typedef implementation_defined type;
|
|
};
|
|
|
|
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
|
|
|
|
//! Helper alias metafunction to combine options into a single type to be used
|
|
//! by \c boost::container::deque.
|
|
//! Supported options are: \c boost::container::block_bytes
|
|
template<class ...Options>
|
|
using deque_options_t = typename boost::container::deque_options<Options...>::type;
|
|
|
|
#endif
|
|
|
|
//!This option specifies the maximum size of a block in bytes: this delimites the number of contiguous elements
|
|
//!that will be allocated by deque as min(1u, BlockBytes/sizeof(value_type))
|
|
//!A value zero represents the default value.
|
|
//!
|
|
//!\tparam BlockBytes An unsigned integer value.
|
|
BOOST_INTRUSIVE_OPTION_CONSTANT(block_bytes, std::size_t, BlockBytes, block_bytes)
|
|
|
|
//!This option specifies the size of a block, delimites the number of contiguous elements
|
|
//!that will be allocated by deque as BlockSize.
|
|
//!A value zero represents the default value.
|
|
//!
|
|
//!\tparam BlockBytes An unsigned integer value.
|
|
BOOST_INTRUSIVE_OPTION_CONSTANT(block_size, std::size_t, BlockSize, block_size)
|
|
|
|
} //namespace container {
|
|
} //namespace boost {
|
|
|
|
#include <boost/container/detail/config_end.hpp>
|
|
|
|
#endif //#ifndef BOOST_CONTAINER_OPTIONS_HPP
|