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Questions - cancellation

What is the best way to handle function interrupts in javascript

Basically I have two async functions. One of them is a simple 5 second timeout and the other is a complicated async function with multiple steps. Here is an example const delay = ms => new Promise(...
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Daniel

javascript

node.js

async-await

promise

cancellation

Votes: 0

Answers: 3

Latest Answer

Is this what you're after? What changed: Promise.all replaced with Promise.race added isStopped prop which makes the "complicated async function with multiple steps" skip execution for the ...
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tao

ChannelReader.ReadAsync(CancellationToken) and ChannelWriter.WriteAsync(CancellationToken) don't return or throw when token is signaled

EDIT: I'm cleaning up the description because I've since determined this also impacts WriteAsync, not just ReadAsync... If one of these calls is currently blocking - ReadAsync because the channel is e...
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Jeff

c#

.net-core

.net-5

cancellation

system.threading.channels

Votes: 0

Answers: 1

Latest Answer

It turns out this is not an issue with channels at all. It is related to the serial, synchronous handling of the cancellation tokens which was leading to a deadlock. Completing the channel avoids th...
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Jeff

How can I prevent the losing arm of a Promise.race from activating?

I'm sending the same query to a large (well, okay, n=5) number of identical endpoints (a few kubernetes clusters) and collating the results together. I want the requests to go out in parallel and time...
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badp

javascript

typescript

promise

cancellation

Votes: 0

Answers: 2

Latest Answer

Yes, you've got both tasks running and pushing objects to the out array. Nothing is stopping them - Promise.race does not magically undo the steps that were taken to create the promises passed to it. ...
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Bergi

Terminate promise given a socket disconnects

I have an Express.js website that utilizes socket.io. For each user (socket) that connects, a function is called that can take a long time to resolve. server.js const app = express(); const server = h...
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Christian Lisle

javascript

node.js

async-await

promise

cancellation

Votes: 0

Answers: 1

Latest Answer

Unfortunately, it is impossible to terminate the execution of a function from outside its' scope in Javascript. Even if you wrap your longRunningTask in a Promise and reject that Promise manually, it ...
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Eduard

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