Memory (Module)

Wasm Modules can access "linear memories" that they define or import.

This is done through memory instructions which are able to

• Determine the size of the memory in pages,
• Attempt to grow the memory by some amount,
• and load from or store into the memory.

Memories are defined with a minimum number of pages they need and optionally a maximum number of pages they will ever need.

Exporting Memory

Memories can also be exported which assigns them an external name.

Modules can be linked together so that module A's export is connected to module B's import. This enables two modules to share a memory.

Alternatively, the memory can be exported and used by the host.