denoland-deno/cli/tests/testdata/workers/permissions_blob_local.ts.out at cb2ca234bb39d8e02b08d2866860e8d3a00b5887 - foster/denoland-deno - Foster's Laboratory

foster/denoland-deno

mirror of https://github.com/denoland/deno.git synced 2024-10-31 09:14:20 -04:00

Bartek Iwańczuk cb2ca234bb

refactor(core): limit number of boundary crossings between Rust and V8 (#18652 )

This commit refactors "deno_core" to do fewer boundary crossings
from Rust to V8. In other words we are now calling V8 from Rust fewer
times.

This is done by merging 3 distinct callbacks into a single one. Instead
of having "op resolve" callback, "next tick" callback and "macrotask
queue" callback, we now have only "Deno.core.eventLoopTick" callback,
which is responsible for doing the same actions previous 3 callbacks.

On each of the event loop we were doing at least 2 boundary crosses
(timers macrotask queue callback and unhandled promise rejection
callback) and up to 4 crosses if there were op response and next tick
callbacks coming from Node.js compatibility layer. Now this is all done
in a single callback.

Closes https://github.com/denoland/deno/issues/18620

2023-04-14 02:41:32 +02:00

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 error: Uncaught (in worker "") Requires read access to "[WILDCARD]local_file.ts", run again with the --allow-read flag
     at blob:null/[WILDCARD]:1:8
 error: Uncaught (in promise) Error: Unhandled error in child worker.
     at Worker.#pollControl ([WILDCARD])
     at eventLoopTick (ext:core/01_core.js:[WILDCARD])