On Fri, Oct 29, 2021 at 1:49 AM 'Márton Marczell' via emscripten-discuss <
[email protected]> wrote:

>
> Thank you for the suggestions. My reason for asking is that our code,
> although mostly C++, holds on to certain resources only available by
> "dropping down" to JS calls, and would like to move them between workers.
> We first implemented this on top of the objectTransfer message as seen in
> https://github.com/emscripten-core/emscripten/issues/8212, but that was
> undocumented, and then it got removed.
>
>
So you want to not only run code on a certain thread but also transfer over
JS objects to the target thread?   Thats hard in the general case because
postMessage messages only occur when a thread yeilds to the event loop, and
pthreads don't normally do that.    Is there some way you can restructure
your application to use native heap objects rather than JS objects?



>
> On Friday, 29 October 2021 at 01:58:09 UTC+2 [email protected] wrote:
>
>> We have a message queue system for sending work/functions/message between
>> threads.  See `emscripten/threading.h`.  In particular I think
>> `emscripten_dispatch_to_thread` might be useful to you.
>>
>> Alternatively you can just use the normal C/C++ mechanisms for
>> inter-thread communication and do it yourself.   All the standard C/C++ API
>> for doing this kind of thing should work.
>>
>>
>> On Wed, Oct 20, 2021 at 5:39 AM 'Márton Marczell' via emscripten-discuss <
>> [email protected]> wrote:
>>
>>> Hi,
>>>
>>> Why is Module.onCustomMessage only available in PROXY_TO_WORKER mode?
>>> Would it be possible to enable it in multi-pthreaded applications? We
>>> are in need of a solution to do custom messaging between our threads and
>>> the main thread.
>>>
>>> Márton
>>>
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