Crate wasm_dbms_memory 

wasm-dbms-memory provides runtime-agnostic memory abstraction and page management for the wasm-dbms framework.

This crate contains:

• MemoryProvider trait for abstracting memory backends
• HeapMemoryProvider for testing
• MemoryManager for page-level memory operations
• SchemaRegistry for table schema persistence
• AccessControl trait for pluggable access control
• AccessControlList for identity-based access control
• NoAccessControl for runtimes without access control
• TableRegistry for record-level storage and retrieval

Re-exports

pub use self::table_registry::NextRecord;

pub use self::table_registry::TableReader;

pub use self::table_registry::TableRegistry;

Modules

prelude

Prelude re-exports for convenient use.

table_registry

Structs

AccessControlList

Access control list storing allowed identities as raw bytes.

HeapMemoryProvider

An implementation of MemoryProvider that uses heap memory for testing purposes.

MemoryManager

The memory manager handles page-level memory operations on top of a MemoryProvider.

NoAccessControl

ACL provider that allows all identities unconditionally.

SchemaRegistry

The schema registry takes care of storing and retrieving table schemas from memory.

TableRegistryPage

Data regarding the table registry page.

Constants

WASM_PAGE_SIZE

The size of a WASM memory page in bytes (64 KiB).

Traits

AccessControl

Trait for access control providers.

MemoryAccess

Abstraction over page-level memory operations.

MemoryProvider

Memory Provider trait defines the interface for interacting with the underlying memory.

Functions

align_up

Gets the padding at the given offset to the next multiple of [E::ALIGNMENT].