alexcrichton opened PR #9614 from alexcrichton:traps-cargo-feature
to bytecodealliance:main
:
This PR adds a new
signals-based-traps
Cargo compile-time feature which mirrors theConfig::signals_based_traps
runtime configuration. Disabling this Cargo feature enables reducing Wasmtime's platform requirements to remove the need for virtual memory and trap handlers for example. That means that the underlying platform requirements are just setjmp/longjmp and a single pointer of thread-local storage. This should make it significantly easier to port Wasmtime to platforms that may not have virtual memory in the future.I'll note that one of the main purposes of this PR isn't quite realized just yet which is to run Pulley on embedded systems. Pulley isn't finished, however, so this is more setting the stage for that to be possible in the future than enabling it right this red-hot-second.
alexcrichton updated PR #9614.
alexcrichton updated PR #9614.
alexcrichton updated PR #9614.
github-actions[bot] commented on PR #9614:
Label Messager: wasmtime:config
It looks like you are changing Wasmtime's configuration options. Make sure to
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alexcrichton updated PR #9614.
alexcrichton updated PR #9614.
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alexcrichton updated PR #9614.
bjorn3 created PR review comment:
Maybe make this the default when std is enabled? It seems highly unintuitive that disabling say the gc feature using
default-features = false
would silently reduce performance.
bjorn3 submitted PR review.
bjorn3 edited PR review comment.
alexcrichton submitted PR review.
alexcrichton created PR review comment:
Agreed yeah, I added that in bb8fa843139ac84247e0883908a9da429ef5b7d5
alexcrichton has marked PR #9614 as ready for review.
alexcrichton requested wasmtime-fuzz-reviewers for a review on PR #9614.
alexcrichton requested pchickey for a review on PR #9614.
alexcrichton requested wasmtime-core-reviewers for a review on PR #9614.
alexcrichton requested wasmtime-default-reviewers for a review on PR #9614.
alexcrichton closed without merge PR #9614.
alexcrichton updated PR #9614.
alexcrichton reopened PR #9614.
alexcrichton updated PR #9614.
pchickey submitted PR review:
Pretty cool!
pchickey created PR review comment:
TODO
alexcrichton updated PR #9614.
alexcrichton commented on PR #9614:
I've pushed some extra refactoring of
MmapVec
as well to handle the internals a bit better given today's requirements.
alexcrichton has enabled auto merge for PR #9614.
alexcrichton merged PR #9614.
Last updated: Dec 23 2024 at 12:05 UTC