async interface

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Amir Rossert

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Feb 6, 2021, 10:52:25 AM2/6/21
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Is there any plans to introduce async interface to the Process class? 
In my use case I have multiple processes that I monitor and I want to "wait" for each process using the "wait()" method, currently it is blocking call so in order to do this I need to use "run_in_executor" which spawn a thread for each process.

Is there any other way of doing so without threads? 

Giampaolo Rodola'

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Feb 6, 2021, 1:04:36 PM2/6/21
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Both psutil.Process.wait() and psutil.wait_procs() can be passed timeout=0 and will act in a non-blocking fashion.

Amir Rossert

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Feb 7, 2021, 4:48:51 AM2/7/21
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Thanks, I know that but I'm wondering if we can do it without polling, like:
`await process.wait()`

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Giampaolo Rodola'

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Feb 7, 2021, 5:03:35 AM2/7/21
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No, you have to build on top of that. You should run that in an async thread / task / coroutine. If you are using asyncio look for “run_in_executor”.


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