Module gear_core::pages

Module for memory pages.

Structs

• GearPage
  Page number.
• PagesIter
  U32 size pages iterator, to iterate continuously from one page to another.
• PagesIterInclusive
  U32 size pages iterator, to iterate continuously from one page to another, including the last one.
• WasmPage
  Wasm page number.

Enums

• PageError
  Errors when act with PageU32Size.
• PageSizeNo
  An enum which distinguishes between different page sizes.

Constants

• GEAR_PAGE_SIZE
  A gear page size, currently 4KiB to fit the most common native page size. This is size of memory data pages in storage. So, in lazy-pages, when program tries to access some memory interval - we can download just some number of gear pages instead of whole wasm page. The number of small pages, which must be downloaded, is depends on host native page size, so can vary.
• WASM_PAGE_SIZE
  A WebAssembly page has a constant size of 64KiB.

Traits

• PageDynSize
  Page with dynamic size.
• PageNumber
  Page number trait - page, which can return it number as u32.
• PageU32Size
  Trait represents page with u32 size for u32 memory: max memory size is 2^32 bytes. All operations with page guarantees, that no addr or page number can be overflowed.
• SizeManager
  Context where dynamic size pages store their sizes