I'm looking to do something like this now, but I can't see where I should
start my search. I found that EM_ASM is a define of an other fonction
insite of `emscripten.h` but I don't know where I have to look to start to
implement an `EM_ASM_MAIN_THREAD` macro.
Le dimanche 24 avril 2016 04:08:38 UTC-4, jj a écrit :
>
> Something that I've been thinking about is if we did a
> EM_ASM_MAIN_THREAD(...) macro that would be identical to EM_ASM, except
> that when a pthread executes it, it would proxy the EM_ASM call to the main
> thread to execute, and then pause to wait for the main thread to report
> back. This might allow these kind of EM_ASM_MAIN_THREAD(alert('message'));
> situations at least, where performance is not a concern (e.g. debugging,
> startup, critical failures, ..). This could also work in a limited fashion
> in non-pthreads builds when --proxy-to-worker is used.
>
> As a sidenote, console.log() and console.error() are already posted from
> pthreads to the main thread, so those can be freely used in EM_ASM blocks
> in pthreads and should work.
>
> 2016-04-22 20:45 GMT+03:00 Alon Zakai <[email protected] <javascript:>>:
>
>> If I understand the question, it sounds like you want to write a method
>> in JavaScript in your HTML, and have it be executed when a worker is
>> created? Do you want it to run in the HTML (on the main thread) or in the
>> worker?
>>
>> If in HTML, then you can modify the code that creates workers (not sure
>> where, but looking for new Worker() in src/ should find it). Or, you might
>> just patch Worker itself in the main scope, replace it with another method
>> that wraps around it. Overall I don't think we have a nice way to do that
>> right now.
>>
>> If in the worker, then you can't directly do that - functions can't be
>> passed from workers, only JSON-type data.
>>
>> On Thu, Apr 21, 2016 at 7:55 AM, Kerby Geffrard <[email protected]
>> <javascript:>> wrote:
>>
>>> Hi,
>>>
>>> I was wondering if there's a way to attach any function to any worker
>>> that Emscripten create. I want to do that because I want to add an event
>>> listener to all of my threads.
>>>
>>> What I would like to do:
>>>
>>>
>>> - I want to be able to add a function in my shell.html (Let's call
>>> it *onNewWorker*)
>>> - And when emscripten create a Worker because of a pthread in my
>>> project, *onNewWorker *is called with my worker passed in argument
>>> - So since inside of my *onNewWorker *function, I can add event
>>> listener with my worker, all my pthread have the event listener that I
>>> want
>>>
>>>
>>> I want to do this because I need to add an event listener for when my
>>> C++ thread send message with EM_ASM*. This is needed because I want to send
>>> a message from my thread to the main thread that trigger an
>>> `alert('message')` since we can't use alert() from workers.
>>>
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>>
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>
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