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]>: > 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]> > 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. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "emscripten-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
