Stream: git-wasmtime

Topic: wasmtime / PR #9681 Move MemoryImageSource::map_at to mma...

Wasmtime GitHub notifications bot (Nov 26 2024 at 05:41):

sunshowers opened PR #9681 from sunshowers:map-at-mmap to bytecodealliance:main:

This is part of the work to centralize memory management into the mmap
module. This commit introduces a few structures which aid in that process, and
starts converting one of the functions (MemoryImageSource::map_at) into this
module.

The structures introduced are:

• MemoryBase: RuntimeLinearMemory::base_ptr is now
  RuntimeLinearMemory::base, which returns a MemoryBase. This is either a
  raw pointer or an mmap + an offset into it.

• MmapOffset: A combination of a reference to an mmap and an offset into it.
  Logically represents a pointer into a mapped section of memory.

• MmapOffsetRaw: Some components like MemoryImageSlot logically work on
  borrowed memory, but adding lifetime parameters to them would introduce
  self-reference issues. Instead, store a raw form of the MmapOffset such
  that it can be reconstructed at runtime. This should work for most future
  work here, but not all of it -- I've written out some comments along with
  ideas.
  

Wasmtime GitHub notifications bot (Nov 26 2024 at 05:41):

sunshowers requested alexcrichton for a review on PR #9681.

Wasmtime GitHub notifications bot (Nov 26 2024 at 05:41):

sunshowers requested wasmtime-core-reviewers for a review on PR #9681.

Wasmtime GitHub notifications bot (Nov 26 2024 at 06:00):

sunshowers updated PR #9681.

Wasmtime GitHub notifications bot (Nov 26 2024 at 06:02):

sunshowers updated PR #9681.

Last updated: Dec 13 2025 at 19:03 UTC