thread wainting for task to end should not run another task

[MatthieuTexier]

Hello, thank you for the nice lib.

I will try to describe my problem.
The default scheduler runs several tasks, says A and B
Task A creates a temporary scheduler and wait on it's internal tasks with when_all(A_tasks).wait()
The waiting thread runs task B and this leads to a mess as B cannot be called from A.
A thread waiting for a task to end should not run another task.

[zerodefect]

Can you elaborate on this some more? I'm wondering if I've seen the same thing. Do you have any example code?

[Amanieu]

The behavior of wait is controlled by the wait handler set by set_thread_wait_handler. Since A is running in the default scheduler thread pool it will use the handler set up by the thread pool and try to run other pending tasks from the default scheduler while waiting.

[MatthieuTexier]

Thanks Amanieu, I will try to set the thread_wait_handler.

[kikaxa]

Also, you really should use continuations (.then) if you use async patterns.
@MatthieuTexier do you need this task open any more?

[MatthieuTexier]

Hi @kikaxa , yes I do.