Stream: git-wasmtime

Topic: wasmtime / PR #1654 Add wasmtime-specific C APIs for tables

Wasmtime GitHub notifications bot (May 04 2020 at 20:16):

alexcrichton opened PR #1654 from wasmtime-func-table-apis to master:

This commit adds a suite of wasmtime_funcref_table_* APIs which mirror
the standard APIs but have a few differences:

• More errors are returned. For example error messages are communicated
  through wasmtime_error_t and out-of-bounds vs load of null can be
  differentiated in the get API.

• APIs take wasm_func_t instead of wasm_ref_t. Given the recent
  decision to remove subtyping from the anyref proposal it's not clear
  how the C API for tables will be affected, so for now these APIs are
  all specialized to only funcref tables.

• Growth now allows access to the previous size of the table, if
  desired, which mirrors the table.grow instruction.

This was originally motivated by bytecodealliance/wasmtime-go#5 where
the current APIs we have for working with tables don't quite work. We
don't have a great way to take an anyref constructed from a Func and
get the Func back out, so for now this sidesteps those concerns while
we sort out the anyref story.

It's intended that once the anyref story has settled and the official C
API has updated we'll likely delete these wasmtime-specific APIs or
implement them as trivial wrappers around the official ones.

Wasmtime GitHub notifications bot (May 06 2020 at 17:38):

alexcrichton requested yurydelendik for a review on PR #1654.

Wasmtime GitHub notifications bot (May 13 2020 at 23:16):

sunfishcode merged PR #1654.

Last updated: Dec 06 2025 at 06:05 UTC