Support asyncio actors with the trio spawner backend
parent
da16149cad
commit
94927948a9
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@ -19,12 +19,15 @@ def parse_ipaddr(arg):
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return (str(host), int(port))
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from ._entry import _trio_main
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument("--uid", type=parse_uid)
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parser.add_argument("--loglevel", type=str)
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parser.add_argument("--parent_addr", type=parse_ipaddr)
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parser.add_argument("--asyncio", action='store_true')
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args = parser.parse_args()
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subactor = Actor(
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@ -36,5 +39,6 @@ if __name__ == "__main__":
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_trio_main(
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subactor,
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parent_addr=args.parent_addr
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parent_addr=args.parent_addr,
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infect_asyncio=args.asyncio,
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)
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@ -20,6 +20,7 @@ def _mp_main(
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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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infect_asyncio: bool = False,
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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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@ -61,12 +62,15 @@ def _trio_main(
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actor: 'Actor', # type: ignore # noqa
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*,
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parent_addr: Tuple[str, int] = None,
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infect_asyncio: bool = False,
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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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log.info(f"Started new trio process for {actor.uid}")
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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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@ -84,7 +88,11 @@ def _trio_main(
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)
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try:
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trio.run(trio_main)
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if infect_asyncio:
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actor._infected_aio = True
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run_as_asyncio_guest(trio_main)
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else:
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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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@ -159,6 +159,7 @@ async def cancel_on_completion(
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async def spawn_subactor(
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subactor: 'Actor',
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parent_addr: Tuple[str, int],
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infect_asyncio: bool,
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):
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spawn_cmd = [
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sys.executable,
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@ -183,6 +184,10 @@ async def spawn_subactor(
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subactor.loglevel
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]
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# Tell child to run in guest mode on top of ``asyncio`` loop
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if infect_asyncio:
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spawn_cmd.append("--asyncio")
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proc = await trio.open_process(spawn_cmd)
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try:
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yield proc
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@ -240,6 +245,7 @@ async def new_proc(
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parent_addr: Tuple[str, int],
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_runtime_vars: Dict[str, Any], # serialized and sent to _child
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*,
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infect_asyncio: bool = False,
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task_status: TaskStatus[Portal] = trio.TASK_STATUS_IGNORED
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) -> None:
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"""Create a new ``multiprocessing.Process`` using the
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@ -255,6 +261,7 @@ async def new_proc(
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async with spawn_subactor(
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subactor,
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parent_addr,
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infect_asyncio=infect_asyncio
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) as proc:
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log.info(f"Started {proc}")
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@ -392,6 +399,7 @@ async def mp_new_proc(
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fs_info,
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start_method,
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parent_addr,
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infect_asyncio,
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),
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# daemon=True,
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name=name,
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