Collaboration diagram for ripple::SlabAllocator< Type >:
Classes | |
| struct | SlabBlock |
| A block of memory that is owned by a slab allocator. More... | |
Public Member Functions | |
| constexpr | SlabAllocator (std::size_t extra, std::size_t alloc=0, std::size_t align=0) |
| Constructs a slab allocator able to allocate objects of a fixed size. More... | |
| SlabAllocator (SlabAllocator const &other)=delete | |
| SlabAllocator & | operator= (SlabAllocator const &other)=delete |
| SlabAllocator (SlabAllocator &&other)=delete | |
| SlabAllocator & | operator= (SlabAllocator &&other)=delete |
| ~SlabAllocator () | |
| constexpr std::size_t | size () const noexcept |
| Returns the size of the memory block this allocator returns. More... | |
| std::uint8_t * | allocate () noexcept |
| Returns a suitably aligned pointer, if one is available. More... | |
| bool | deallocate (std::uint8_t *ptr) noexcept |
| Returns the memory block to the allocator. More... | |
Private Attributes | |
| std::atomic< SlabBlock * > | slabs_ = nullptr |
| const std::size_t | itemAlignment_ |
| const std::size_t | itemSize_ |
| const std::size_t | slabSize_ |
Detailed Description
template<typename Type>
class ripple::SlabAllocator< Type >
Definition at line 43 of file SlabAllocator.h.
Constructor & Destructor Documentation
◆ SlabAllocator() [1/3]
template<typename Type >
|
explicitconstexpr |
Constructs a slab allocator able to allocate objects of a fixed size.
- Parameters
-
count the number of items the slab allocator can allocate; note that a count of 0 is valid and means that the allocator is, effectively, disabled. This can be very useful in some contexts (e.g. when mimimal memory usage is needed) and allows for graceful failure.
Definition at line 178 of file SlabAllocator.h.
◆ SlabAllocator() [2/3]
template<typename Type >
|
delete |
◆ SlabAllocator() [3/3]
template<typename Type >
|
delete |
◆ ~SlabAllocator()
template<typename Type >
| ripple::SlabAllocator< Type >::~SlabAllocator | ( | ) |
Definition at line 198 of file SlabAllocator.h.
Member Function Documentation
◆ operator=() [1/2]
template<typename Type >
|
delete |
◆ operator=() [2/2]
template<typename Type >
|
delete |
◆ size()
template<typename Type >
|
constexprnoexcept |
Returns the size of the memory block this allocator returns.
Definition at line 207 of file SlabAllocator.h.
◆ allocate()
template<typename Type >
|
noexcept |
Returns a suitably aligned pointer, if one is available.
- Returns
- a pointer to a block of memory from the allocator, or nullptr if the allocator can't satisfy this request.
Definition at line 218 of file SlabAllocator.h.
◆ deallocate()
template<typename Type >
|
noexcept |
Returns the memory block to the allocator.
- Parameters
-
ptr A pointer to a memory block. size If non-zero, a hint as to the size of the block.
- Returns
- true if this memory block belonged to the allocator and has been released; false otherwise.
Definition at line 295 of file SlabAllocator.h.
Member Data Documentation
◆ slabs_
template<typename Type >
|
private |
Definition at line 157 of file SlabAllocator.h.
◆ itemAlignment_
template<typename Type >
|
private |
Definition at line 160 of file SlabAllocator.h.
◆ itemSize_
template<typename Type >
|
private |
Definition at line 164 of file SlabAllocator.h.
◆ slabSize_
template<typename Type >
|
private |
Definition at line 167 of file SlabAllocator.h.
