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Concurrency & performance

asyncio, threading, multiprocessing, and profiling-friendly performance patterns.

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Concurrency & performance medium

Graceful Shutdown Executor Context Manager in Python

A context manager that starts a background thread and ensures it stops gracefully on exit, handling timeouts and exceptions.

threading context-manager graceful-shutdown
Python 
import signal
import threading
import time
from contextlib import contextmanager


@contextmanager
def graceful_shutdown_executor(timeout=5.0):
    """Context manager that runs a task and gracefully stops it on timeout or exception."""
    stop_event = threading.Event()

    def task():
        print("Task started")
 …
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