Default memory allocator used by the parser and DOM. More...
#include <allocators.h>
Public Member Functions | |
MemoryPoolAllocator (size_t chunkSize=kDefaultChunkCapacity, BaseAllocator *baseAllocator=0) | |
Constructor with chunkSize. More... | |
MemoryPoolAllocator (void *buffer, size_t size, size_t chunkSize=kDefaultChunkCapacity, BaseAllocator *baseAllocator=0) | |
Constructor with user-supplied buffer. More... | |
MemoryPoolAllocator (const MemoryPoolAllocator &rhs) RAPIDJSON_NOEXCEPT | |
MemoryPoolAllocator & | operator= (const MemoryPoolAllocator &rhs) RAPIDJSON_NOEXCEPT |
~MemoryPoolAllocator () RAPIDJSON_NOEXCEPT | |
Destructor. More... | |
void | Clear () RAPIDJSON_NOEXCEPT |
Deallocates all memory chunks, excluding the first/user one. | |
size_t | Capacity () const RAPIDJSON_NOEXCEPT |
Computes the total capacity of allocated memory chunks. More... | |
size_t | Size () const RAPIDJSON_NOEXCEPT |
Computes the memory blocks allocated. More... | |
bool | Shared () const RAPIDJSON_NOEXCEPT |
Whether the allocator is shared. More... | |
void * | Malloc (size_t size) |
Allocates a memory block. (concept Allocator) | |
void * | Realloc (void *originalPtr, size_t originalSize, size_t newSize) |
Resizes a memory block (concept Allocator) | |
bool | operator== (const MemoryPoolAllocator &rhs) const RAPIDJSON_NOEXCEPT |
Compare (equality) with another MemoryPoolAllocator. | |
bool | operator!= (const MemoryPoolAllocator &rhs) const RAPIDJSON_NOEXCEPT |
Compare (inequality) with another MemoryPoolAllocator. | |
Static Public Member Functions | |
static void | Free (void *ptr) RAPIDJSON_NOEXCEPT |
Frees a memory block (concept Allocator) | |
Static Public Attributes | |
static const bool | kNeedFree = false |
Tell users that no need to call Free() with this allocator. (concept Allocator) | |
static const bool | kRefCounted = true |
Tell users that this allocator is reference counted on copy. | |
Default memory allocator used by the parser and DOM.
This allocator allocate memory blocks from pre-allocated memory chunks.
It does not free memory blocks. And Realloc() only allocate new memory.
The memory chunks are allocated by BaseAllocator, which is CrtAllocator by default.
User may also supply a buffer as the first chunk.
If the user-buffer is full then additional chunks are allocated by BaseAllocator.
The user-buffer is not deallocated by this allocator.
BaseAllocator | the allocator type for allocating memory chunks. Default is CrtAllocator. |
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inlineexplicit |
Constructor with chunkSize.
chunkSize | The size of memory chunk. The default is kDefaultChunkSize. |
baseAllocator | The allocator for allocating memory chunks. |
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inline |
Constructor with user-supplied buffer.
The user buffer will be used firstly. When it is full, memory pool allocates new chunk with chunk size.
The user buffer will not be deallocated when this allocator is destructed.
buffer | User supplied buffer. |
size | Size of the buffer in bytes. It must at least larger than sizeof(ChunkHeader). |
chunkSize | The size of memory chunk. The default is kDefaultChunkSize. |
baseAllocator | The allocator for allocating memory chunks. |
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inline |
Destructor.
This deallocates all memory chunks, excluding the user-supplied buffer.
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inline |
Computes the total capacity of allocated memory chunks.
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inline |
Whether the allocator is shared.
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inline |
Computes the memory blocks allocated.