async.h | Stackless Async Subroutines for C | Reactive Programming library

 by   naasking C Version: Current License: BSD-3-Clause

kandi X-RAY | async.h Summary

kandi X-RAY | async.h Summary

async.h is a C library typically used in Programming Style, Reactive Programming applications. async.h has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Taking inspiration from protothreads and async/await as found in C#, Rust and JS, this is a header-only async/await implementation for C based on Duff's device.
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              async.h has a low active ecosystem.
              It has 596 star(s) with 49 fork(s). There are 16 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 2 have been closed. On average issues are closed in 59 days. There are 6 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of async.h is current.

            kandi-Quality Quality

              async.h has 0 bugs and 0 code smells.

            kandi-Security Security

              async.h has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              async.h code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              async.h is licensed under the BSD-3-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              async.h releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of async.h
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            async.h Key Features

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            async.h Examples and Code Snippets

            No Code Snippets are available at this moment for async.h.

            Community Discussions

            QUESTION

            How do I use this async function's callback parm to know when my function finished executing?
            Asked 2022-Feb-26 at 21:33

            New to flutter and async programming in general. I want to use this function:

            https://pub.dev/documentation/ffmpeg_kit_flutter/latest/ffmpeg_kit/FFmpegKit/executeAsync.html

            I don't understand the part that says

            You must use an FFmpegSessionCompleteCallback if you want to be notified about the result.

            Can someone explain how to use this as if I was a beginner programmer? Is this parameter something I can use to print a simple message to the console, like 'execution finished'?

            What I've tried so far:

            ...

            ANSWER

            Answered 2022-Feb-26 at 21:33

            The callback will be invoked when the operation completes. However, when you do

            Source https://stackoverflow.com/questions/71280375

            QUESTION

            Cannot send and execute correct command through pipes using Boost library in C++
            Asked 2022-Jan-15 at 03:04

            Use the answer in the question: simultaneous read and write to child's stdio using boost.process,

            I refactored the code and hybridized the new method using the Boost library. I've been successful in making a pipes connection with Stockfish, but this is also where I get errors I've never seen before, not even Google helps.

            Here is what I have tried:

            ...

            ANSWER

            Answered 2022-Jan-15 at 03:04

            You are printing to cout as if the async operations happen immediately. That's not the case. The async operations only happen when the io service runs.

            Source https://stackoverflow.com/questions/70711707

            QUESTION

            Running tasks concurrently in ansible (not a loop)
            Asked 2022-Jan-10 at 12:42

            I have three tasks in an ansible playbook that are unique enough that I can't wrap them in a loop. For simplicity, let's assume they are creating three different VM instances in a cloud provider and that each task has a specific configuration

            ...

            ANSWER

            Answered 2022-Jan-10 at 12:42

            Q: "They seem to use loops which I can't do here because the different sets are pretty different. How/Can I async these tasks?"

            A: You can use a loop to wait for the tasks. For example

            Source https://stackoverflow.com/questions/70649182

            QUESTION

            Vue.component() dynamic import with loader
            Asked 2021-Jun-10 at 22:51

            Is there a way to import dynamically a component with a Loader default if it's not loaded ?

            We use something like this right now,

            ...

            ANSWER

            Answered 2021-Jun-10 at 22:51

            Your code should already work. It might seem to not work because the loading happens instantaneously.

            If you artificially delay the return of import('../components/dashboard'), you'll notice the loader displayed:

            Source https://stackoverflow.com/questions/67928167

            QUESTION

            Why does Async.StartChild return `Async<'T>>`?
            Asked 2021-May-29 at 15:51

            I'm very new to F# and I've been reading F# for Fun and Profit. In the Why use F#? series, there's a post describing async code. I ran across the Async.StartChild function and I don't understand why the return value is what it is.

            The example:

            ...

            ANSWER

            Answered 2021-May-29 at 05:37

            The idea is this: You start another async-computation (in the background) with let wait = Async.StartChild otherComp and you get the waiter back.

            What that means is that let! result = waiter will block and wait for the result of your background-computation whenever you want.

            if Async.StartChild would return a Async<'t> you would wait with let! x = otherComp right there and it would be just like a normal let! result = otherComp`

            And yes F# Async-Workflows will only start once you do something like Async.Start... or Async.RunSynchronously (it's not like a Task that usually runs as soon as you created it)

            that's why in C# you can create a Task (var task = CreateMyTask()) at one point (that would be the Async.StartChild part) and then later use var result = await task to wait there for the result (that's the let! result = waiter part).

            Why Async.StartChild returns Async<'T>> instead of Async<'T>

            This is because the workflows started this way is supposed to behave like a child-task/process. When you cancel the containing workflow the child should be canceled as well.

            So on a technical level the child-workflow needs access to the cancelation-token without you passing it explicitly and that is one thing the Async-Type handles in the background for you when you use Bind (aka let! here).

            So it has to be this type in order for that passing of the cancelation-token to work.

            Source https://stackoverflow.com/questions/67723546

            QUESTION

            python3.6 async/await still works synchronously with fastAPI
            Asked 2021-May-13 at 17:37

            I have a fastAPI app that posts two requests, one of them is longer (if it helps, they're Elasticsearch queries and I'm using the AsyncElasticsearch module which already returns coroutine). This is my attempt:

            ...

            ANSWER

            Answered 2021-Apr-02 at 09:30

            Yes, that's correct the coroutine won't proceed until the results are ready. You can use asyncio.gather to run tasks concurrently:

            Source https://stackoverflow.com/questions/66916601

            QUESTION

            How to test Akka actors with virtual time?
            Asked 2021-May-03 at 01:24

            I have a small number of actors (written in Java, using Akka typed APIs), which make use of TimerScheduler to schedule messages to themselves. I'd like to write tests that check their interactions.

            When using the ActorTestKit recommended in the documentation, it can execute them using normal timers, which means that when the actor schedules a message to itself in 10 seconds, then the test has to last 10 seconds.

            In order to speed up tests, I'd like to use virtual time for the test, where the scheduler in the test does not actually wait but advances a virtual clock instead. Unfortunately, ActorTestKit does not seem to support this concept.

            Is there any established pattern for running such tests?

            ...

            ANSWER

            Answered 2021-May-03 at 01:24

            The ActorTestKit includes ManualTime (in the Java API: akka.actor.testkit.typed.javadsl.ManualTime) which lets you advance the timer by durations (e.g. between assertions). See controlling the Scheduler in the ActorTestKit docs.

            Source https://stackoverflow.com/questions/67361615

            QUESTION

            Parsing multipage tables into CSV files with AWS Textract
            Asked 2021-Apr-14 at 18:46

            I'm a total AWS newbie trying to parse tables of multi page files into CSV files with AWS Textract. I tried using AWS's example in this page however when we are dealing with a multi-page file the response = client.analyze_document(Document={'Bytes': bytes_test}, FeatureTypes=['TABLES']) breaks since we need asynchronous processing in those cases, as you can see in the documentation here. The correct function to call would be client.start_document_analysis and after running it retrieve the file using client.get_document_analysis(JobId).

            So, I adapted their example using this logic instead of using client.analyze_document function, the adapted piece of code looks like this:

            ...

            ANSWER

            Answered 2021-Apr-14 at 18:46

            Consider use two different lambdas. One for call textract and one for process the result.

            Please read this document

            https://aws.amazon.com/blogs/compute/getting-started-with-rpa-using-aws-step-functions-and-amazon-textract/

            And check this repository

            https://github.com/aws-samples/aws-step-functions-rpa

            To process the JSON you can use this sample as reference https://github.com/aws-samples/amazon-textract-response-parser or use it directly as library.

            Source https://stackoverflow.com/questions/67097279

            QUESTION

            Async load components locally and alias the name
            Asked 2021-Mar-28 at 11:28

            I am migrating to vue.js 3 and did not find a solution to get this working:

            In Vue.js 2 I was able to load a component like this and assign a alias name:

            ...

            ANSWER

            Answered 2021-Mar-28 at 10:48

            In your example, AsyncComponent is the component name, isn't it? So:

            Source https://stackoverflow.com/questions/66840557

            QUESTION

            Why does API Gateway (Test) not wait for async lambda?
            Asked 2021-Mar-26 at 08:17

            I am writing an async lambda on AWS using Node.js (14.x). This lambda is being called by an API Gateway (REST API, POST method, CORS enabled).

            To allow the API Gateway to call an async lambda, I added the following HTTP Header to its Integration Request: Name = X-Amz-Invocation-Type and Mapped from (value) = 'Event' as specified here.

            When I run Test, I get the following output:

            ...

            ANSWER

            Answered 2021-Mar-26 at 08:17

            This is working as intended. The second sentence in AWS docs on "Asynchronous invocation" says:

            When you invoke a function asynchronously, you don't wait for a response from the function code.

            If you want a response with a result, asynchronous invocation will not work.

            Source https://stackoverflow.com/questions/66813098

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install async.h

            You can download it from GitHub.

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