37 lines
1.3 KiB
Python
37 lines
1.3 KiB
Python
"""Shared AppController I/O pool factory.
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Historical note: an earlier revision of this module registered an
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``atexit.register(pool.shutdown, wait=False)`` handler here, mirroring
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the conftest fix at commit 8957c9a5. That approach was reverted because
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it does not solve the Ctrl+C hang in ``sloppy.py`` when a worker is
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mid-task (e.g. a long-running Gemini/Anthropic HTTP request): atexit
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handlers do not fire at all in that scenario, so the process still hangs
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in ``ThreadPoolExecutor.__del__`` -> ``shutdown(wait=True)`` during
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finalization.
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The production fix lives in ``AppController.__init__`` as a SIGINT
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handler that drains the pool and calls ``os._exit(0)``, sidestepping
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the broken finalization chain. See commit log for details.
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"""
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from concurrent.futures import ThreadPoolExecutor
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IO_POOL_MAX_WORKERS: int = 4
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IO_POOL_THREAD_NAME_PREFIX: str = "controller-io"
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def make_io_pool(max_workers: int = IO_POOL_MAX_WORKERS) -> ThreadPoolExecutor:
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"""Create the shared AppController I/O pool.
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4 worker threads, named "controller-io-N". Used for warmup, log pruning,
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disk-bound subsystem init, and any other background work that should
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not spin up its own thread.
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Caller is responsible for shutdown (e.g. controller.shutdown()).
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"""
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return ThreadPoolExecutor(
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max_workers=max_workers,
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thread_name_prefix=IO_POOL_THREAD_NAME_PREFIX,
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)
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