Struct gear_core::memory::AllocationsContext

pub struct AllocationsContext { /* private fields */ }

Pages allocations context for the running program.

Implementations

impl AllocationsContext

pub fn new( allocations: BTreeSet<WasmPage>, static_pages: WasmPage, max_pages: WasmPage ) -> Self

New allocations context.

Provide currently running program_id, boxed memory abstraction and allocation manager. Also configurable static_pages and max_pages are set.

pub fn is_init_page(&self, page: WasmPage) -> bool

Return true if the page is the initial page, it means that the page was already in the storage.

pub fn alloc<G: GrowHandler>( &mut self, pages: WasmPage, mem: &mut impl Memory, charge_gas_for_grow: impl FnOnce(WasmPage) -> Result<(), ChargeError> ) -> Result<WasmPage, AllocError>

Allocates specified number of continuously going pages and returns zero-based number of the first one.

pub fn free(&mut self, page: WasmPage) -> Result<(), AllocError>

Free specific page.

Currently running program should own this page.

pub fn into_parts(self) -> (WasmPage, BTreeSet<WasmPage>, BTreeSet<WasmPage>)

Decomposes this instance and returns allocations.

Trait Implementations

impl Debug for AllocationsContext

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

Formats the value using the given formatter.