Kurtis — thanks for the suggestion — I had assumed that python always just runs
in the main thread, and when I added this code to my python script, it shows
that it is indeed running in the main thread:
import threading
if threading.current_thread() is threading.main_thread():
print("running in main thread!”)
after much searching, I can’t find anything suggesting that python spawns a new
thread when calling dlopen to load the library, but I also am not sure that it
doesn’t.. if it doesn’t then that puts the ball back into Go’s court — can
anyone who knows the guts of this stuff comment about whether it might have
something that automatically avoids the main thread when running as a library??
Thanks,
- Randy
> On Feb 25, 2019, at 11:49 AM, Kurtis Rader <kra...@skepticism.us> wrote:
>
> On Mon, Feb 25, 2019 at 1:56 AM Randall O'Reilly <rcoreil...@gmail.com> wrote:
> I’m building a shared library of Go code that is loaded as a module by
> python, and called from there. Somehow, I need to ensure that one particular
> function is called on the main thread (Mac OS cocoa gui event loop code
> requires this). I tried adding an init() function in the library and called
> runtime.LockOSThread() there, but that didn’t work (docs say it should, but
> presumably that doesn’t apply to the dynamic lib situation). Thanks,
>
> You have to ensure you only call the function from the python main thread.
> See
> https://stackoverflow.com/questions/23206787/check-if-current-thread-is-main-thread-in-python
> for how to do that. Using LockOSThread() only works if you call your Go
> service loop function from the python main thread. You can't use it to force
> your Go function to run on the main thread when called from a non-main thread.
>
> --
> Kurtis Rader
> Caretaker of the exceptional canines Junior and Hank
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