Struct SharedRegion 

pub struct SharedRegion { /* private fields */ }

Shared memory region descriptor

Implementations

impl SharedRegion

pub fn new( owner: ProcessId, size: usize, _permissions: Permission, ) -> Result<Self>

Create a new shared memory region (convenience wrapper).

Returns an error if physical memory cannot be allocated for the region.

pub fn new_with_policy( owner: ProcessId, size: usize, cache_policy: CachePolicy, numa_node: Option<u32>, ) -> Result<Self>

Create a new shared memory region backed by real physical frames.

Allocates contiguous physical frames from the global frame allocator to back the shared region. Returns IpcError::OutOfMemory if the allocation fails.

pub fn id(&self) -> u64

Get region ID

pub fn size(&self) -> usize

Get region size

pub fn physical_base(&self) -> PhysicalAddress

Get the physical base address of the backing memory

pub fn map( &self, process: ProcessId, virtual_base: VirtualAddress, permissions: Permission, ) -> Result<()>

Map region into a process address space

pub fn unmap(&self, process: ProcessId) -> Result<()>

Unmap region from a process and flush the TLB for the affected range.

pub fn transfer_ownership(&mut self, new_owner: ProcessId) -> Result<()>

Transfer ownership of region to another process.

Validates that the target process exists before transferring.

pub fn get_mapping(&self, process: ProcessId) -> Option<VirtualAddress>

Get virtual address for a specific process

pub fn create_capability( &self, target_process: ProcessId, mode: TransferMode, ) -> u64

Create a capability for this shared region

pub fn numa_node(&self) -> usize

Get the NUMA node for this region

pub fn new_numa( owner: ProcessId, size: usize, _permissions: Permission, numa_node: usize, ) -> Result<Self>

Create a new shared memory region with specific NUMA node.

Returns an error if physical memory cannot be allocated for the region.

Trait Implementations

impl Debug for SharedRegion

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.