Stream: git-wasmtime

Topic: wasmtime / PR #3229 Fix determinism of compiled modules

Wasmtime GitHub notifications bot (Aug 23 2021 at 18:39):

alexcrichton opened PR #3229 from deterministic to main:

Currently wasmtime's compilation artifacts are not deterministic due to
the usage of HashMap during serialization which has randomized order
of its elements. This commit fixes that by switching to a sorted
BTreeMap for various maps. A test is also added to ensure determinism.

If in the future the performance of BTreeMap is not as good as
HashMap for some of these cases we can implement a fancier
serialize_with-style solution where we sort keys during serialization,
but only during serialization and otherwise use a HashMap.

<!--

Please ensure that the following steps are all taken care of before submitting
the PR.

• [ ] This has been discussed in issue #..., or if not, please tell us why
  here.

• [ ] A short description of what this does, why it is needed; if the
  description becomes long, the matter should probably be discussed in an issue
  first.

• [ ] This PR contains test cases, if meaningful.

• [ ] A reviewer from the core maintainer team has been assigned for this PR.
  If you don't know who could review this, please indicate so. The list of
  suggested reviewers on the right can help you.

Please ensure all communication adheres to the code of conduct.
-->

Wasmtime GitHub notifications bot (Aug 23 2021 at 19:10):

peterhuene submitted PR review.

Wasmtime GitHub notifications bot (Aug 23 2021 at 20:05):

alexcrichton updated PR #3229 from deterministic to main.

Wasmtime GitHub notifications bot (Aug 23 2021 at 20:05):

alexcrichton updated PR #3229 from deterministic to main.

Wasmtime GitHub notifications bot (Aug 23 2021 at 22:08):

alexcrichton merged PR #3229.

Last updated: Dec 23 2024 at 12:05 UTC