kagome::runtime::MemoryAllocator Class Reference

#include <memory_allocator.hpp>

Collaboration diagram for kagome::runtime::MemoryAllocator:

Classes
struct	MemoryHandle

Public Member Functions
	MemoryAllocator (MemoryHandle memory, size_t size, WasmPointer heap_base)
WasmPointer	allocate (WasmSize size)
std::optional< WasmSize >	deallocate (WasmPointer ptr)
template<typename T >
bool	checkAddress (WasmPointer addr) noexcept
bool	checkAddress (WasmPointer addr, size_t size) noexcept
std::optional< WasmSize >	getDeallocatedChunkSize (WasmPointer ptr) const
	following methods are needed mostly for testing purposes More...
std::optional< WasmSize >	getAllocatedChunkSize (WasmPointer ptr) const
size_t	getAllocatedChunksNum () const
size_t	getDeallocatedChunksNum () const

Private Member Functions
WasmPointer	freealloc (WasmSize size)
WasmPointer	growAlloc (WasmSize size)
void	resize (WasmSize size)

Private Attributes
MemoryHandle	memory_
std::unordered_map< WasmPointer, WasmSize >	allocated_
std::map< WasmPointer, WasmSize >	deallocated_
size_t	offset_
size_t	size_
log::Logger	logger_

Detailed Description

Implementation of allocator for the runtime memory Combination of monotonic and free-list allocator

Definition at line 45 of file memory_allocator.hpp.

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Class Documentation

struct kagome::runtime::MemoryAllocator::MemoryHandle

Definition at line 47 of file memory_allocator.hpp.

Collaboration diagram for kagome::runtime::MemoryAllocator::MemoryHandle:

Class Members
function< size_t()>	getSize
function< void(size_t)>	resize

Constructor & Destructor Documentation

kagome::runtime::MemoryAllocator::MemoryAllocator	(	MemoryHandle	memory,
		size_t	size,
		WasmPointer	heap_base
	)

Definition at line 18 of file memory_allocator.cpp.

Member Function Documentation

WasmPointer kagome::runtime::MemoryAllocator::allocate

(

WasmSize

size

)

Definition at line 36 of file memory_allocator.cpp.

template<typename T >

bool kagome::runtime::MemoryAllocator::checkAddress ( WasmPointer  addr )

inlinenoexcept

Definition at line 57 of file memory_allocator.hpp.

bool kagome::runtime::MemoryAllocator::checkAddress ( WasmPointer  addr, size_t  size  )

inlinenoexcept

Definition at line 61 of file memory_allocator.hpp.

std::optional< WasmSize > kagome::runtime::MemoryAllocator::deallocate

(

WasmPointer

ptr

)

Definition at line 67 of file memory_allocator.cpp.

WasmPointer kagome::runtime::MemoryAllocator::freealloc ( WasmSize  size )

private

Finds memory segment of given size among deallocated pieces of memory and allocates a memory there

Parameters

size	of target memory

Returns

address of memory of given size, or -1 if it is impossible to allocate this amount of memory

Definition at line 108 of file memory_allocator.cpp.

std::optional< WasmSize > kagome::runtime::MemoryAllocator::getAllocatedChunkSize

(

WasmPointer

ptr

)

const

Definition at line 193 of file memory_allocator.cpp.

size_t kagome::runtime::MemoryAllocator::getAllocatedChunksNum

(

)

const

Definition at line 200 of file memory_allocator.cpp.

std::optional< WasmSize > kagome::runtime::MemoryAllocator::getDeallocatedChunkSize

(

WasmPointer

ptr

)

const

following methods are needed mostly for testing purposes

Definition at line 186 of file memory_allocator.cpp.

size_t kagome::runtime::MemoryAllocator::getDeallocatedChunksNum

(

)

const

Definition at line 204 of file memory_allocator.cpp.

WasmPointer kagome::runtime::MemoryAllocator::growAlloc ( WasmSize  size )

private

Resize memory and allocate memory segment of given size

Parameters

size	memory size to be allocated

Returns

pointer to the allocated memory 0 if it is impossible to allocate this amount of memory

Definition at line 153 of file memory_allocator.cpp.

void kagome::runtime::MemoryAllocator::resize ( WasmSize  size )

private

We use this condition to avoid deallocated_ pointers fixup

Definition at line 175 of file memory_allocator.cpp.

Member Data Documentation

std::unordered_map<WasmPointer, WasmSize> kagome::runtime::MemoryAllocator::allocated_

private

Definition at line 95 of file memory_allocator.hpp.

std::map<WasmPointer, WasmSize> kagome::runtime::MemoryAllocator::deallocated_

private

Definition at line 98 of file memory_allocator.hpp.

log::Logger kagome::runtime::MemoryAllocator::logger_

private

Definition at line 105 of file memory_allocator.hpp.

MemoryHandle kagome::runtime::MemoryAllocator::memory_

private

Definition at line 92 of file memory_allocator.hpp.

size_t kagome::runtime::MemoryAllocator::offset_

private

Definition at line 101 of file memory_allocator.hpp.

size_t kagome::runtime::MemoryAllocator::size_

private

Definition at line 103 of file memory_allocator.hpp.

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

• core/runtime/common/memory_allocator.hpp
• core/runtime/common/memory_allocator.cpp