manager.py: support multiple application processes#284
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javizqh
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| shutil.rmtree("/workspace/code", ignore_errors=False) | ||
| os.mkdir("/workspace/code") | ||
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| # Extract app config |
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replaces the single self.application_process with a self.application_processes dict so RAM can manage N processes by name instead of just one. needed this for multi-agent exercises like drone cat-mouse where we run the students code and a pre-programmed mouse at the same time. added a _kill_all_applications() helper that loops through the dict and kills each process tree — replaces the old copy-pasted kill logic in terminate, disconnect, and signal_handler.
the intresting part is the syncronized startup: after spawning all processes we freeze them with SIGSTOP, unpause gazebo, then SIGCONT everthing together so all agents start at the exact same sim-time. also if the student zip has a processB/ subdir inside it, we launch that as a second agent automatically (its server-side code so we skip linting it later i will see if needed)
existing single-agent exercises just end up with one entry {"agentA": proc} in the dict. tested pause/resume/stop/disconnect with two processes in the real GUI, evrything works as expected.
ra.webm