perf(ext/ffi): switch from middleware to tasks #21239
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ext/ffi/callback.rs
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| async_work_sender.spawn_blocking(move |scope| { | ||
| args.run(scope); |
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question: What happens with errors thrown from here?
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Because these are tasks and we're technically violating the contract by allowing them to bubble into the scope, they end up as "uncaught errors". It doesn't kill the runtime but it isn't a great situation.
It should not be the same as our current state of affairs, however, but I suppose we could add a tc_scope here and print a last-ditch message.
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Note that we will need to figure out what to do with this test as it's failing right now -- either we could punt with a TODO for later, or try to add the last-ditch handler.
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Hm. I did add the error and unhandled rejection listeners in the test but they were not getting fired. Are you sure the errors end up as properly handled uncaught errors/rejections?
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Let me dig into this a bit and see what is going on before we land it...
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| globalThis.addEventListener("error", (data) => { | ||
| console.log("Unhandled error"); |
| console.log("Unhandled error"); | ||
| data.preventDefault(); | ||
| }); | ||
| globalThis.onerror = (data) => { |
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Nor does this get called; this also should be redundant with the one above.
Deno-side changes for denoland/deno_core#350