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Re: Asynchronous programming using standard C

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On 03/09/2012 03:09, Nobody wrote:
> On Sun, 02 Sep 2012 23:28:18 +0100, Chicken McNuggets wrote:
>
>> I assume that asynchronous programming is generally done by calling a
>> function (which includes a call back function pointer in its arguments)
>> which starts a thread and then immediately returns. Once the thread has
>> completed the task it then calls the call back function to return the
>> data to the caller.
>>
>> Is this the basic idea of asynchronous programming or have I got it
>> completely wrong?
>
> That is one specific example of an asynchronous system.
>
> Other examples might have the thread invoke the callback whenever
> something interesting happens, not just on completion, or might avoid the
> callback and have the initiator poll for updates. Or there may not be a
> separate thread, just an event-processing loop which invokes callbacks as
> events arrive (the callbacks are synchronous with respect to the
> event-dispatching function but asynchronous with respect to the code which
> installed them or which triggered the event).
>
> "Asynchronous" generally just means that code is structured to accept
> information as it becomes available rather than blocking until the
> information is provided.
>

Ah. Thanks for your response. That makes sense.

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Asynchronous programming using standard C Chicken McNuggets <chicken@mcnuggets.com> - 2012-09-02 23:28 +0100
  Re: Asynchronous programming using standard C Nobody <nobody@nowhere.com> - 2012-09-03 03:09 +0100
    Re: Asynchronous programming using standard C Chicken McNuggets <chicken@mcnuggets.com> - 2012-09-03 11:43 +0100

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