#include <memory_impl.hpp>

Inheritance diagram for kagome::runtime::binaryen::MemoryImpl:

Collaboration diagram for kagome::runtime::binaryen::MemoryImpl:

Public Member Functions
	MemoryImpl (wasm::ShellExternalInterface::Memory *memory, std::unique_ptr< MemoryAllocator > &&allocator)

	MemoryImpl (wasm::ShellExternalInterface::Memory *memory, WasmSize heap_base)

	MemoryImpl (const MemoryImpl &copy)=delete

MemoryImpl &	operator= (const MemoryImpl &copy)=delete

	MemoryImpl (MemoryImpl &&move)=delete

MemoryImpl &	operator= (MemoryImpl &&move)=delete

	~MemoryImpl () override=default

WasmPointer	allocate (WasmSize size) override

std::optional< WasmSize >	deallocate (WasmPointer ptr) override

int8_t	load8s (WasmPointer addr) const override

uint8_t	load8u (WasmPointer addr) const override

int16_t	load16s (WasmPointer addr) const override

uint16_t	load16u (WasmPointer addr) const override

int32_t	load32s (WasmPointer addr) const override

uint32_t	load32u (WasmPointer addr) const override

int64_t	load64s (WasmPointer addr) const override

uint64_t	load64u (WasmPointer addr) const override

std::array< uint8_t, 16 >	load128 (WasmPointer addr) const override

common::Buffer	loadN (kagome::runtime::WasmPointer addr, kagome::runtime::WasmSize n) const override

std::string	loadStr (kagome::runtime::WasmPointer addr, kagome::runtime::WasmSize length) const override

void	store8 (WasmPointer addr, int8_t value) override

void	store16 (WasmPointer addr, int16_t value) override

void	store32 (WasmPointer addr, int32_t value) override

void	store64 (WasmPointer addr, int64_t value) override

void	store128 (WasmPointer addr, const std::array< uint8_t, 16 > &value) override

void	storeBuffer (kagome::runtime::WasmPointer addr, gsl::span< const uint8_t > value) override

WasmSpan	storeBuffer (gsl::span< const uint8_t > value) override
	allocates buffer in memory and copies value into memory More...

void	resize (WasmSize new_size) override

WasmSize	size () const override
	Return the size of the memory. More...

Public Member Functions inherited from kagome::runtime::Memory
virtual	~Memory ()=default

Private Attributes
wasm::ShellExternalInterface::Memory *	memory_

WasmSize	size_

std::unique_ptr< MemoryAllocator >	allocator_

log::Logger	logger_

Additional Inherited Members
Static Public Attributes inherited from kagome::runtime::Memory
static constexpr uint32_t	kMaxMemorySize

Detailed Description

Memory implementation for wasm environment Most code is taken from Binaryen's implementation here: https://github.com/WebAssembly/binaryen/blob/master/src/shell-interface.h#L37

Note: Memory size of this implementation is at least a page size (4096 bytes)

Definition at line 37 of file memory_impl.hpp.

Constructor & Destructor Documentation

kagome::runtime::binaryen::MemoryImpl::MemoryImpl	(	wasm::ShellExternalInterface::Memory *	memory,
		std::unique_ptr< MemoryAllocator > &&	allocator
	)

Definition at line 13 of file memory_impl.cpp.

kagome::runtime::binaryen::MemoryImpl::MemoryImpl	(	wasm::ShellExternalInterface::Memory *	memory,
		WasmSize	heap_base
	)

Definition at line 22 of file memory_impl.cpp.

kagome::runtime::binaryen::MemoryImpl::MemoryImpl ( const MemoryImpl & copy )

delete

kagome::runtime::binaryen::MemoryImpl::MemoryImpl ( MemoryImpl && move )

delete

kagome::runtime::binaryen::MemoryImpl::~MemoryImpl ( )

overridedefault

Member Function Documentation

WasmPointer kagome::runtime::binaryen::MemoryImpl::allocate ( WasmSize size )

overridevirtual

Allocates memory of given size and returns address in the memory

Parameters

size	allocated memory size

Returns: address to allocated memory. If there is no available slot for such allocation, then -1 is returned

Implements kagome::runtime::Memory.

Definition at line 32 of file memory_impl.cpp.

std::optional< WasmSize > kagome::runtime::binaryen::MemoryImpl::deallocate ( WasmPointer ptr )

overridevirtual

Deallocates memory in provided region

Parameters

ptr	address of deallocated memory

Returns: size of deallocated memory or none if given address does not point to any allocated pieces of memory

Implements kagome::runtime::Memory.

Definition at line 36 of file memory_impl.cpp.

std::array< uint8_t, 16 > kagome::runtime::binaryen::MemoryImpl::load128 ( WasmPointer addr ) const

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 72 of file memory_impl.cpp.

int16_t kagome::runtime::binaryen::MemoryImpl::load16s ( WasmPointer addr ) const

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 48 of file memory_impl.cpp.

uint16_t kagome::runtime::binaryen::MemoryImpl::load16u ( WasmPointer addr ) const

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 52 of file memory_impl.cpp.

int32_t kagome::runtime::binaryen::MemoryImpl::load32s ( WasmPointer addr ) const

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 56 of file memory_impl.cpp.

uint32_t kagome::runtime::binaryen::MemoryImpl::load32u ( WasmPointer addr ) const

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 60 of file memory_impl.cpp.

int64_t kagome::runtime::binaryen::MemoryImpl::load64s ( WasmPointer addr ) const

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 64 of file memory_impl.cpp.

uint64_t kagome::runtime::binaryen::MemoryImpl::load64u ( WasmPointer addr ) const

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 68 of file memory_impl.cpp.

int8_t kagome::runtime::binaryen::MemoryImpl::load8s ( WasmPointer addr ) const

overridevirtual

Load integers from provided address

Implements kagome::runtime::Memory.

Definition at line 40 of file memory_impl.cpp.

uint8_t kagome::runtime::binaryen::MemoryImpl::load8u ( WasmPointer addr ) const

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 44 of file memory_impl.cpp.

common::Buffer kagome::runtime::binaryen::MemoryImpl::loadN	(	kagome::runtime::WasmPointer	addr,
		kagome::runtime::WasmSize	n
	)		const

overridevirtual

Load bytes from provided address into the buffer of size n

Parameters

addr	address in memory to load bytes
n	number of bytes to be loaded

Returns: Buffer of length N

Implements kagome::runtime::Memory.

Definition at line 77 of file memory_impl.cpp.

std::string kagome::runtime::binaryen::MemoryImpl::loadStr	(	kagome::runtime::WasmPointer	addr,
		kagome::runtime::WasmSize	n
	)		const

overridevirtual

Load string from address into buffer of size n

Parameters

addr	address in memory to load bytes
n	number of bytes

Returns: string with data

Implements kagome::runtime::Memory.

Definition at line 88 of file memory_impl.cpp.

MemoryImpl& kagome::runtime::binaryen::MemoryImpl::operator= ( const MemoryImpl & copy )

delete

MemoryImpl& kagome::runtime::binaryen::MemoryImpl::operator= ( MemoryImpl && move )

delete

void kagome::runtime::binaryen::MemoryImpl::resize ( WasmSize new_size )

inlineoverridevirtual

Resizes memory to the given size

Parameters

new_size

We use this condition to avoid deallocated_ pointers fixup

Implements kagome::runtime::Memory.

Definition at line 77 of file memory_impl.hpp.

WasmSize kagome::runtime::binaryen::MemoryImpl::size ( ) const

inlineoverridevirtual

Return the size of the memory.

Implements kagome::runtime::Memory.

Definition at line 88 of file memory_impl.hpp.

void kagome::runtime::binaryen::MemoryImpl::store128	(	WasmPointer	addr,
		const std::array< uint8_t, 16 > &	value
	)

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 119 of file memory_impl.cpp.

void kagome::runtime::binaryen::MemoryImpl::store16	(	WasmPointer	addr,
		int16_t	value
	)

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 104 of file memory_impl.cpp.

void kagome::runtime::binaryen::MemoryImpl::store32	(	WasmPointer	addr,
		int32_t	value
	)

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 109 of file memory_impl.cpp.

void kagome::runtime::binaryen::MemoryImpl::store64	(	WasmPointer	addr,
		int64_t	value
	)

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 114 of file memory_impl.cpp.

void kagome::runtime::binaryen::MemoryImpl::store8	(	WasmPointer	addr,
		int8_t	value
	)

overridevirtual

Store integers at given address of the wasm memory

Implements kagome::runtime::Memory.

Definition at line 99 of file memory_impl.cpp.

void kagome::runtime::binaryen::MemoryImpl::storeBuffer	(	kagome::runtime::WasmPointer	addr,
		gsl::span< const uint8_t >	value
	)

overridevirtual

Implements kagome::runtime::Memory.

Definition at line 125 of file memory_impl.cpp.

WasmSpan kagome::runtime::binaryen::MemoryImpl::storeBuffer ( gsl::span< const uint8_t > value )

overridevirtual

allocates buffer in memory and copies value into memory

Parameters

value buffer to store

Returns: full wasm pointer to allocated buffer

Implements kagome::runtime::Memory.

Definition at line 134 of file memory_impl.cpp.

Member Data Documentation

std::unique_ptr<MemoryAllocator> kagome::runtime::binaryen::MemoryImpl::allocator_

private

Definition at line 95 of file memory_impl.hpp.

log::Logger kagome::runtime::binaryen::MemoryImpl::logger_

private

Definition at line 97 of file memory_impl.hpp.

wasm::ShellExternalInterface::Memory* kagome::runtime::binaryen::MemoryImpl::memory_

private

Definition at line 93 of file memory_impl.hpp.

WasmSize kagome::runtime::binaryen::MemoryImpl::size_

private

Definition at line 94 of file memory_impl.hpp.

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

core/runtime/binaryen/memory_impl.hpp
core/runtime/binaryen/memory_impl.cpp

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation