alb::v_100::cascading_allocator_base< Shared, Allocator > Class Template Reference

#include <cascading_allocator.hpp>

Public Types
using	allocator = Allocator

Public Member Functions
	cascading_allocator_base (cascading_allocator_base &&x) noexcept
cascading_allocator_base &	operator= (cascading_allocator_base &&x) noexcept
	~cascading_allocator_base ()
block	allocate (size_t n) noexcept
void	deallocate (block &b) noexcept
bool	reallocate (block &b, size_t n) noexcept
template<typename U = Allocator>
std::enable_if < traits::has_expand< U > ::value, bool >::type	expand (block &b, size_t delta) noexcept
bool	owns (const block &b) const noexcept
template<typename U = Allocator>
std::enable_if < traits::has_deallocate_all < U >::value, void >::type	deallocate_all () noexcept

Static Public Member Functions
static constexpr size_t	good_size (size_t n)

Static Public Attributes
static constexpr bool	supports_truncated_deallocation = Allocator::supports_truncated_deallocation
static constexpr unsigned	alignment = Allocator::alignment

Detailed Description

template<bool Shared, typename Allocator>
class alb::v_100::cascading_allocator_base< Shared, Allocator >

This implements a cascade of allocators. If the first allocator cannot fulfill the given request, then a next one is created and the requested is passed to it. This class is thread safe as far as not deleteAll is called.

Template Parameters

Allocator

of this type Allocators get created.

Definition at line 29 of file cascading_allocator.hpp.

Constructor & Destructor Documentation

template<bool Shared, typename Allocator>

alb::v_100::cascading_allocator_base< Shared, Allocator >::~cascading_allocator_base ( )

inline

Frees all allocated memory!

Definition at line 183 of file cascading_allocator.hpp.

Member Function Documentation

template<bool Shared, typename Allocator>

block alb::v_100::cascading_allocator_base< Shared, Allocator >::allocate ( size_t  n )

inlinenoexcept

Sends the request to the first allocator, if it cannot fulfill the request then the next Allocator is created and so on

Definition at line 192 of file cascading_allocator.hpp.

template<bool Shared, typename Allocator>

void alb::v_100::cascading_allocator_base< Shared, Allocator >::deallocate ( block &  b )

inlinenoexcept

Frees the given block and resets it

Definition at line 236 of file cascading_allocator.hpp.

template<bool Shared, typename Allocator>

template<typename U = Allocator>

std::enable_if<traits::has_deallocate_all<U>::value, void>::type alb::v_100::cascading_allocator_base< Shared, Allocator >::deallocate_all ( )

inlinenoexcept

Deletes all allocated resources. All Blocks created by this instance must not be used any more. Calling this method while other threads are allocating or deallocating leads to unpredictable behavior. This is only available if the Allocator implements it as well.

Definition at line 315 of file cascading_allocator.hpp.

template<bool Shared, typename Allocator>

template<typename U = Allocator>

std::enable_if<traits::has_expand<U>::value, bool>::type alb::v_100::cascading_allocator_base< Shared, Allocator >::expand ( block &  b, size_t  delta  )

inlinenoexcept

Tries to expand the given block insito by the specified number of bytes This is only available if the Allocator implements it

Parameters

b	The block to be expanded
delta	The amount of bytes

Returns

True, if the operation was successful

Definition at line 288 of file cascading_allocator.hpp.

template<bool Shared, typename Allocator>

bool alb::v_100::cascading_allocator_base< Shared, Allocator >::owns ( const block &  b ) const

inlinenoexcept

Checks for the ownership of the given block

Parameters

b	The block to check

Returns

True, if one of the allocator owns it.

Definition at line 302 of file cascading_allocator.hpp.

template<bool Shared, typename Allocator>

bool alb::v_100::cascading_allocator_base< Shared, Allocator >::reallocate ( block &  b, size_t  n  )

inlinenoexcept

Reallocates the given block to the specified size. If the owning allocator cannot fulfill the request then a cross move is performed

Parameters

b	Block to be reallocated
n	The new size
True,if	the operation was successful

Definition at line 261 of file cascading_allocator.hpp.

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The documentation for this class was generated from the following file:

• alb/cascading_allocator.hpp