Show Python Process names in debugger

[mschurr]

You can get the current Python process name as follows:

import multiprocessing
print(multiprocessing.current_process().name)

However, in the pane in the debugger which lists all processes/threads, processes still show up as "Subprocess 1234" even when the process name is set. It would be nice to expose the process name instead of (or in addition to) the PID (if it is set).

see also: https://superfastpython.com/process-name/

[mschurr]

I wasn't sure if this was a debugpy issue or a VS Code issue, so please feel free to redirect me to the right place if this is not it.

[int19h]

That name is computed by debugpy, so it's best tracked here.

[int19h]

This should be a low-hanging fruit. The reported name is computed here:

debugpy/src/debugpy/adapter/clients.py

Line 725 in 5723ed6

body["name"] = "Subprocess {0}".format(conn.pid)

To make the above work, pydevd needs to report the process name in pydevdSystemInfo response:

debugpy/src/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_process_net_command_json.py

Lines 1293 to 1298 in 5723ed6

	process_info = pydevd_schema.PydevdProcessInfo(
	pid=pid,
	ppid=ppid,
	executable=sys.executable,
	bitness=64 if IS_64BIT_PROCESS else 32,
	)

and then this code needs to record it on the connection object alongside other stuff:

debugpy/src/debugpy/adapter/servers.py

Lines 80 to 83 in 5723ed6

	info = self.channel.request("pydevdSystemInfo")
	process_info = info("process", json.object())
	self.pid = process_info("pid", int)
	self.ppid = process_info("ppid", int, optional=True)

[garrett361]

Any update on this? Would be really useful!

[rchiodo]

Any update on this? Would be really useful!

It's not something on our backlog but we take pull requests from the community. @int19h made it sound pretty simple to fix.