socket connection is the first thing i thought of, but that implies
coding some socket listening logic in the child process, was hoping to
avoid that.
im exploring some other possibilities like talking via pipes which is
what i think you are talking when issuing commands to the stdin, or the
other one ive seen is using shared memory between the two processes with
some sort of datastructure like a queue.
Ive read some interprocess communication in Operating Systems CS subject
but of all, the option im more familiar with is using sockets... and i
think for what im trying to do is a bit overkill.
Thanks to both.
El 25/02/2018 a las 2:24, Justin Israel escribió:
On Thu, Feb 22, 2018, 2:58 AM Marcus Ottosson <konstrukt...@gmail.com
<mailto:konstrukt...@gmail.com>> wrote:
Yes, when you |import my_script|, it is effectively “run”. So what
you can do is launch 1 instance of mayapy, and pass it a single
script that imports the others.
|$ mayapy my_script.py |
*my_script.py*
|import other_script1 import other_script2 |
guess what im asking is if there you can specify the process
id for example to the Popen method and have it use the process
if it already exists or create one if it doesnt
This probably isn’t what you’re looking for. Yes, you can get the
process ID from a Popen instance, but unless you devise an
interprocess communication server/client between your processes,
you haven’t got that many options left for telling the mayapy you
find to run another script.
Just to expand on this answer a little bit, there are a few different
options with varying complexity.
Your subprocess can open a commandPort, and your main process can
issue commands to it via a socket connection.
The Maya subprocess can start reading from stdin and you can issue
instructions to it by writing to the stdin of your Process object.
You can use some non-maya interprocess communication like jsonrpc,
ZMQ, or some other RPC or message bus. But this is probably overkill
of you don't already have them as available libraries.
If you have redis, Rabbitmq, or some other task queue already running,
you could make it the broker for pushing in requests from the main
process and having the subprocess read them out to execute.
CommandPort or talking to stdin of the subprocess are probably the
easiest choices.
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