forked from goodboy/tractor
92 lines
2.2 KiB
Python
92 lines
2.2 KiB
Python
"""
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Sub-process entry points.
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"""
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from functools import partial
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from typing import Tuple, Any
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import signal
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import trio # type: ignore
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from .log import get_console_log, get_logger
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from . import _state
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log = get_logger(__name__)
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def _mp_main(
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actor: 'Actor', # type: ignore
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accept_addr: Tuple[str, int],
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forkserver_info: Tuple[Any, Any, Any, Any, Any],
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start_method: str,
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parent_addr: Tuple[str, int] = None,
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) -> None:
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"""The routine called *after fork* which invokes a fresh ``trio.run``
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"""
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actor._forkserver_info = forkserver_info
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from ._spawn import try_set_start_method
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spawn_ctx = try_set_start_method(start_method)
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if actor.loglevel is not None:
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log.info(
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f"Setting loglevel for {actor.uid} to {actor.loglevel}")
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get_console_log(actor.loglevel)
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assert spawn_ctx
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log.info(
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f"Started new {spawn_ctx.current_process()} for {actor.uid}")
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_state._current_actor = actor
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log.debug(f"parent_addr is {parent_addr}")
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trio_main = partial(
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actor._async_main,
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accept_addr,
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parent_addr=parent_addr
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)
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try:
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trio.run(trio_main)
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except KeyboardInterrupt:
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pass # handle it the same way trio does?
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finally:
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log.info(f"Actor {actor.uid} terminated")
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def _trio_main(
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actor: 'Actor', # type: ignore
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*,
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parent_addr: Tuple[str, int] = None,
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) -> None:
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"""Entry point for a `trio_run_in_process` subactor.
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"""
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# Disable sigint handling in children;
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# we don't need it thanks to our cancellation machinery.
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signal.signal(signal.SIGINT, signal.SIG_IGN)
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log.info(f"Started new trio process for {actor.uid}")
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if actor.loglevel is not None:
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log.info(
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f"Setting loglevel for {actor.uid} to {actor.loglevel}")
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get_console_log(actor.loglevel)
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log.info(
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f"Started {actor.uid}")
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_state._current_actor = actor
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log.debug(f"parent_addr is {parent_addr}")
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trio_main = partial(
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actor._async_main,
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parent_addr=parent_addr
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)
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try:
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trio.run(trio_main)
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except KeyboardInterrupt:
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log.warning(f"Actor {actor.uid} received KBI")
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finally:
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log.info(f"Actor {actor.uid} terminated")
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