contur::IVirtualMemory Class Reference

Abstract interface for virtual memory management. More...

#include <i_virtual_memory.h>

Inheritance diagram for contur::IVirtualMemory:

Public Member Functions
virtual	~IVirtualMemory ()=default
virtual Result< MemoryAddress >	allocateSlot (ProcessId processId, std::size_t size)=0
	Allocates a virtual memory slot for a process.
virtual Result< void >	freeSlot (ProcessId processId)=0
	Frees a previously allocated slot.
virtual Result< void >	loadSegment (ProcessId processId, const std::vector< Block > &data)=0
	Loads a code/data segment into a process's virtual address space.
virtual Result< std::vector< Block > >	readSegment (ProcessId processId) const =0
	Reads the entire code/data segment from a process's virtual memory.
virtual std::size_t	totalSlots () const noexcept=0
	Returns the number of total slots available.
virtual std::size_t	freeSlots () const noexcept=0
	Returns the number of free (unallocated) slots.
virtual bool	hasSlot (ProcessId processId) const noexcept=0
	Checks whether a process has an allocated slot.
virtual std::size_t	slotSize (ProcessId processId) const noexcept=0
	Returns the slot size (number of blocks) for a process, or 0 if no slot.

Detailed Description

Abstract interface for virtual memory management.

Provides slot-based allocation of virtual address spaces for processes. Each slot represents a contiguous virtual memory region that can be loaded with a code/data segment (vector of Blocks).

VirtualMemory sits conceptually above the MMU — it manages which processes have virtual address spaces and provides bulk load/store operations, while the MMU handles per-address translation.

Definition at line 25 of file i_virtual_memory.h.

Constructor & Destructor Documentation

~IVirtualMemory()

virtual contur::IVirtualMemory::~IVirtualMemory ( )

virtualdefault

Member Function Documentation

allocateSlot()

virtual Result< MemoryAddress > contur::IVirtualMemory::allocateSlot ( ProcessId processId, std::size_t size )

nodiscardpure virtual

Allocates a virtual memory slot for a process.

Parameters

processId	The owning process.
size	Number of Block cells in the virtual address range.

Returns

The slot index (base virtual address), or an error.

Implemented in contur::VirtualMemory.

freeSlot()

virtual Result< void > contur::IVirtualMemory::freeSlot ( ProcessId processId )

nodiscardpure virtual

Frees a previously allocated slot.

Parameters

processId

The owning process.

Returns

Success, or an error if the process has no slot.

Implemented in contur::VirtualMemory.

freeSlots()

virtual std::size_t contur::IVirtualMemory::freeSlots ( ) const

nodiscardpure virtualnoexcept

Returns the number of free (unallocated) slots.

Implemented in contur::VirtualMemory.

References freeSlots().

Referenced by freeSlots().

hasSlot()

virtual bool contur::IVirtualMemory::hasSlot ( ProcessId processId ) const

nodiscardpure virtualnoexcept

Checks whether a process has an allocated slot.

Implemented in contur::VirtualMemory.

References hasSlot().

Referenced by hasSlot().

loadSegment()

virtual Result< void > contur::IVirtualMemory::loadSegment ( ProcessId processId, const std::vector< Block > & data )

nodiscardpure virtual

Loads a code/data segment into a process's virtual address space.

Parameters

processId	The owning process.
data	The blocks to load.

Returns

Success, or an error if the slot is too small or not allocated.

Implemented in contur::VirtualMemory.

readSegment()

virtual Result< std::vector< Block > > contur::IVirtualMemory::readSegment ( ProcessId processId ) const

nodiscardpure virtual

Reads the entire code/data segment from a process's virtual memory.

Parameters

processId

The owning process.

Returns

The blocks in the slot, or an error.

Implemented in contur::VirtualMemory.

slotSize()

virtual std::size_t contur::IVirtualMemory::slotSize ( ProcessId processId ) const

nodiscardpure virtualnoexcept

Returns the slot size (number of blocks) for a process, or 0 if no slot.

Implemented in contur::VirtualMemory.

References slotSize().

Referenced by slotSize().

totalSlots()

virtual std::size_t contur::IVirtualMemory::totalSlots ( ) const

nodiscardpure virtualnoexcept

Returns the number of total slots available.

Implemented in contur::VirtualMemory.

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

• include/contur/memory/i_virtual_memory.h