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7dd72e042d
...
2800100b21
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@ -111,4 +111,4 @@ jobs:
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run: pip install -U . -r requirements-test.txt -r requirements-docs.txt --upgrade-strategy eager
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- name: Run tests
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run: pytest tests/ --spawn-backend=${{ matrix.spawn_backend }} -rs --full-trace
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run: pytest tests/ --spawn-backend=${{ matrix.spawn_backend }} -rs
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@ -3,14 +3,13 @@
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|gh_actions|
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|docs|
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``tractor`` is a `structured concurrent`_, multi-processing_ runtime
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built on trio_.
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``tractor`` is a `structured concurrent`_, multi-processing_ runtime built on trio_.
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Fundamentally ``tractor`` gives you parallelism via ``trio``-"*actors*":
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our nurseries_ let you spawn new Python processes which each run a ``trio``
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scheduled runtime - a call to ``trio.run()``.
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We believe the system adheres to the `3 axioms`_ of an "`actor model`_"
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We believe the system adhere's to the `3 axioms`_ of an "`actor model`_"
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but likely *does not* look like what *you* probably think an "actor
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model" looks like, and that's *intentional*.
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@ -578,13 +577,13 @@ say hi, please feel free to reach us in our `matrix channel`_. If
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matrix seems too hip, we're also mostly all in the the `trio gitter
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channel`_!
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.. _structured concurrent: https://trio.discourse.group/t/concise-definition-of-structured-concurrency/228
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.. _multi-processing: https://en.wikipedia.org/wiki/Multiprocessing
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.. _trio: https://github.com/python-trio/trio
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.. _nurseries: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/#nurseries-a-structured-replacement-for-go-statements
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.. _actor model: https://en.wikipedia.org/wiki/Actor_model
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.. _trio: https://github.com/python-trio/trio
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.. _multi-processing: https://en.wikipedia.org/wiki/Multiprocessing
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.. _trionic: https://trio.readthedocs.io/en/latest/design.html#high-level-design-principles
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.. _async sandwich: https://trio.readthedocs.io/en/latest/tutorial.html#async-sandwich
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.. _structured concurrent: https://trio.discourse.group/t/concise-definition-of-structured-concurrency/228
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.. _3 axioms: https://www.youtube.com/watch?v=7erJ1DV_Tlo&t=162s
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.. .. _3 axioms: https://en.wikipedia.org/wiki/Actor_model#Fundamental_concepts
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.. _adherance to: https://www.youtube.com/watch?v=7erJ1DV_Tlo&t=1821s
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@ -81,14 +81,11 @@ def run_example_in_subproc(loglevel, testdir, arb_addr):
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'example_script',
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# walk yields: (dirpath, dirnames, filenames)
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[
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(p[0], f) for p in os.walk(examples_dir()) for f in p[2]
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[(p[0], f) for p in os.walk(examples_dir()) for f in p[2]
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if '__' not in f
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and f[0] != '_'
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and 'debugging' not in p[0]
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and 'integration' not in p[0]
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],
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and 'debugging' not in p[0]],
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ids=lambda t: t[1],
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)
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@ -611,8 +611,7 @@ class Actor:
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entry = local_nursery._children.get(uid)
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if entry:
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_, proc, _ = entry
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log.warning(
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f'Actor {uid}@{proc} IPC connection broke!?')
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log.warning(f'Actor {uid}@{proc} IPC connection broke!?')
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# if proc.poll() is not None:
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# log.error('Actor {uid} proc died and IPC broke?')
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@ -631,11 +630,6 @@ class Actor:
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# Attempt to wait for the far end to close the channel
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# and bail after timeout (2-generals on closure).
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assert chan.msgstream
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log.runtime(
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f'Draining lingering msgs from stream {chan.msgstream}'
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)
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async for msg in chan.msgstream.drain():
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# try to deliver any lingering msgs
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# before we destroy the channel.
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@ -41,7 +41,6 @@ from .log import get_logger
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from ._discovery import get_root
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from ._state import is_root_process, debug_mode
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from ._exceptions import is_multi_cancelled
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from ._ipc import Channel
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try:
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@ -179,6 +178,12 @@ async def _acquire_debug_lock(
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we_acquired = False
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if _no_remote_has_tty is None:
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# mark the tty lock as being in use so that the runtime
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# can try to avoid clobbering any connection from a child
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# that's currently relying on it.
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_no_remote_has_tty = trio.Event()
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try:
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log.runtime(
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f"entering lock checkpoint, remote task: {task_name}:{uid}"
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@ -186,12 +191,6 @@ async def _acquire_debug_lock(
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we_acquired = True
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await _debug_lock.acquire()
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if _no_remote_has_tty is None:
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# mark the tty lock as being in use so that the runtime
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# can try to avoid clobbering any connection from a child
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# that's currently relying on it.
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_no_remote_has_tty = trio.Event()
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_global_actor_in_debug = uid
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log.runtime(f"TTY lock acquired, remote task: {task_name}:{uid}")
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@ -209,7 +208,6 @@ async def _acquire_debug_lock(
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finally:
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# if _global_actor_in_debug == uid:
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if (
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we_acquired
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and _debug_lock.locked()
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@ -226,15 +224,12 @@ async def _acquire_debug_lock(
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not stats.owner
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):
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log.runtime(f"No more tasks waiting on tty lock! says {uid}")
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if _no_remote_has_tty is not None:
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_no_remote_has_tty.set()
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_no_remote_has_tty = None
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_global_actor_in_debug = None
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log.runtime(
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f"TTY lock released, remote task: {task_name}:{uid}"
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)
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log.runtime(f"TTY lock released, remote task: {task_name}:{uid}")
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@tractor.context
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@ -249,10 +244,6 @@ async def _hijack_stdin_for_child(
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the pdbpp debugger console can be allocated to a sub-actor for repl
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bossing.
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NOTE: this task is invoked in the root actor-process of the actor
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tree. It is meant to be invoked as an rpc-task which should be
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highly reliable at cleaning out the tty-lock state when complete!
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'''
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task_name = trio.lowlevel.current_task().name
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@ -274,9 +265,9 @@ async def _hijack_stdin_for_child(
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with (
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trio.CancelScope(shield=True),
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):
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# try:
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# lock = None
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async with _acquire_debug_lock(subactor_uid): # as lock:
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try:
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lock = None
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async with _acquire_debug_lock(subactor_uid) as lock:
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# indicate to child that we've locked stdio
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await ctx.started('Locked')
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@ -288,35 +279,32 @@ async def _hijack_stdin_for_child(
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async with ctx.open_stream() as stream:
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assert await stream.receive() == 'pdb_unlock'
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# except (
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# BaseException,
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# # trio.MultiError,
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# # Exception,
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# # trio.BrokenResourceError,
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# # trio.Cancelled, # by local cancellation
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# # trio.ClosedResourceError, # by self._rx_chan
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# # ContextCancelled,
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# # ConnectionResetError,
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# ):
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# # XXX: there may be a race with the portal teardown
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# # with the calling actor which we can safely ignore.
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# # The alternative would be sending an ack message
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# # and allowing the client to wait for us to teardown
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# # first?
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# if lock and lock.locked():
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# try:
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# lock.release()
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# except RuntimeError:
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# log.exception(f"we don't own the tty lock?")
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except (
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BaseException,
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# trio.MultiError,
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# Exception,
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# trio.BrokenResourceError,
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# trio.Cancelled, # by local cancellation
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# trio.ClosedResourceError, # by self._rx_chan
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# ContextCancelled,
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# ConnectionResetError,
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):
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# XXX: there may be a race with the portal teardown
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# with the calling actor which we can safely ignore.
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# The alternative would be sending an ack message
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# and allowing the client to wait for us to teardown
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# first?
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if lock and lock.locked():
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lock.release()
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# # if isinstance(err, trio.Cancelled):
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# raise
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# if isinstance(err, trio.Cancelled):
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raise
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# finally:
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# log.runtime(
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# "TTY lock released, remote task:"
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# f"{task_name}:{subactor_uid}"
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# )
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finally:
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log.runtime(
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"TTY lock released, remote task:"
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f"{task_name}:{subactor_uid}"
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)
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return "pdb_unlock_complete"
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@ -397,10 +385,6 @@ def mk_mpdb() -> tuple[MultiActorPdb, Callable]:
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signal.SIGINT,
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partial(shield_sigint, pdb_obj=pdb),
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)
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# XXX: These are the important flags mentioned in
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# https://github.com/python-trio/trio/issues/1155
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# which resolve the traceback spews to console.
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pdb.allow_kbdint = True
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pdb.nosigint = True
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@ -469,15 +453,11 @@ async def _breakpoint(
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_local_task_in_debug = task_name
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def child_release_hook():
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try:
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# sometimes the ``trio`` might already be termianated in
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# which case this call will raise.
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# _local_task_in_debug = None
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_local_pdb_complete.set()
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finally:
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# restore original sigint handler
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undo_sigint()
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# should always be cleared in the hijack hook aboved right?
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# _local_task_in_debug = None
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# assign unlock callback for debugger teardown hooks
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# _pdb_release_hook = _local_pdb_complete.set
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@ -491,15 +471,11 @@ async def _breakpoint(
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# we have to figure out how to avoid having the service nursery
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# cancel on this task start? I *think* this works below?
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# actor._service_n.cancel_scope.shield = shield
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try:
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with trio.CancelScope(shield=True):
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await actor._service_n.start(
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wait_for_parent_stdin_hijack,
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actor.uid,
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)
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except RuntimeError:
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child_release_hook()
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raise
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elif is_root_process():
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@ -548,12 +524,8 @@ async def _breakpoint(
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_global_actor_in_debug = None
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_local_task_in_debug = None
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try:
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# sometimes the ``trio`` might already be termianated in
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# which case this call will raise.
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_local_pdb_complete.set()
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finally:
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# restore original sigint handler
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undo_sigint()
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@ -609,58 +581,20 @@ def shield_sigint(
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__tracebackhide__ = True
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global _local_task_in_debug, _global_actor_in_debug
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uid_in_debug = _global_actor_in_debug
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in_debug = _global_actor_in_debug
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actor = tractor.current_actor()
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def do_cancel():
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# If we haven't tried to cancel the runtime then do that instead
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# of raising a KBI (which may non-gracefully destroy
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# a ``trio.run()``).
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if not actor._cancel_called:
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actor.cancel_soon()
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# If the runtime is already cancelled it likely means the user
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# hit ctrl-c again because teardown didn't full take place in
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# which case we do the "hard" raising of a local KBI.
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else:
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raise KeyboardInterrupt
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any_connected = False
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if uid_in_debug is not None:
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# try to see if the supposed (sub)actor in debug still
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# has an active connection to *this* actor, and if not
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# it's likely they aren't using the TTY lock / debugger
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# and we should propagate SIGINT normally.
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chans = actor._peers.get(tuple(uid_in_debug))
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if chans:
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any_connected = any(chan.connected() for chan in chans)
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if not any_connected:
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log.warning(
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'A global actor reported to be in debug '
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'but no connection exists for this child:\n'
|
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f'{uid_in_debug}\n'
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'Allowing SIGINT propagation..'
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)
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return do_cancel()
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# root actor branch that reports whether or not a child
|
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# has locked debugger.
|
||||
if (
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is_root_process()
|
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and uid_in_debug is not None
|
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|
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# XXX: only if there is an existing connection to the
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# (sub-)actor in debug do we ignore SIGINT in this
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# parent! Otherwise we may hang waiting for an actor
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# which has already terminated to unlock.
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and any_connected
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and in_debug
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):
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name = uid_in_debug[0]
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name = in_debug[0]
|
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if name != 'root':
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log.pdb(
|
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f"Ignoring SIGINT while child in debug mode: `{uid_in_debug}`"
|
||||
f"Ignoring SIGINT while child in debug mode: `{in_debug}`"
|
||||
)
|
||||
|
||||
else:
|
||||
|
|
@ -672,16 +606,6 @@ def shield_sigint(
|
|||
elif (
|
||||
not is_root_process()
|
||||
):
|
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chan: Channel = actor._parent_chan
|
||||
if not chan or not chan.connected():
|
||||
log.warning(
|
||||
'A global actor reported to be in debug '
|
||||
'but no connection exists for its parent:\n'
|
||||
f'{uid_in_debug}\n'
|
||||
'Allowing SIGINT propagation..'
|
||||
)
|
||||
return do_cancel()
|
||||
|
||||
task = _local_task_in_debug
|
||||
if task:
|
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log.pdb(
|
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|
|
@ -697,6 +621,20 @@ def shield_sigint(
|
|||
"Ignoring SIGINT since debug mode is enabled"
|
||||
)
|
||||
|
||||
# noone has the debugger so raise KBI
|
||||
else:
|
||||
# If we haven't tried to cancel the runtime then do that instead
|
||||
# of raising a KBI (which may non-gracefully destroy
|
||||
# a ``trio.run()``).
|
||||
if not actor._cancel_called:
|
||||
actor.cancel_soon()
|
||||
|
||||
# If the runtime is already cancelled it likely means the user
|
||||
# hit ctrl-c again because teardown didn't full take place in
|
||||
# which case we do the "hard" raising of a local KBI.
|
||||
else:
|
||||
raise KeyboardInterrupt
|
||||
|
||||
# maybe redraw/print last REPL output to console
|
||||
if pdb_obj:
|
||||
|
||||
|
|
@ -710,12 +648,8 @@ def shield_sigint(
|
|||
# https://github.com/goodboy/tractor/issues/130#issuecomment-663752040
|
||||
# https://github.com/prompt-toolkit/python-prompt-toolkit/blob/c2c6af8a0308f9e5d7c0e28cb8a02963fe0ce07a/prompt_toolkit/patch_stdout.py
|
||||
|
||||
try:
|
||||
pdb_obj.do_longlist(None)
|
||||
print(pdb_obj.prompt, end='', flush=True)
|
||||
except AttributeError:
|
||||
log.exception('pdbpp longlist failed...')
|
||||
raise KeyboardInterrupt
|
||||
|
||||
|
||||
def _set_trace(
|
||||
|
|
@ -733,7 +667,7 @@ def _set_trace(
|
|||
# start 2 levels up in user code
|
||||
frame: FrameType = sys._getframe()
|
||||
if frame:
|
||||
frame = frame.f_back # type: ignore
|
||||
frame = frame.f_back.f_back # type: ignore
|
||||
|
||||
if pdb and actor is not None:
|
||||
log.pdb(f"\nAttaching pdb to actor: {actor.uid}\n")
|
||||
|
|
|
|||
|
|
@ -601,14 +601,7 @@ class Context:
|
|||
|
||||
finally:
|
||||
if self._portal:
|
||||
try:
|
||||
self._portal._streams.remove(stream)
|
||||
except KeyError:
|
||||
log.warning(
|
||||
f'Stream was already destroyed?\n'
|
||||
f'actor: {self.chan.uid}\n'
|
||||
f'ctx id: {self.cid}'
|
||||
)
|
||||
self._portal._streams.remove(rchan)
|
||||
|
||||
async def result(self) -> Any:
|
||||
'''
|
||||
|
|
|
|||
|
|
@ -271,12 +271,7 @@ def _run_asyncio_task(
|
|||
task.exception()
|
||||
except BaseException as terr:
|
||||
task_err = terr
|
||||
|
||||
if isinstance(terr, CancelledError):
|
||||
log.cancel(f'`asyncio` task cancelled: {task.get_name()}')
|
||||
else:
|
||||
log.exception(f'`asyncio` task: {task.get_name()} errored')
|
||||
|
||||
assert type(terr) is type(aio_err), 'Asyncio task error mismatch?'
|
||||
|
||||
if aio_err is not None:
|
||||
|
|
|
|||
Loading…
Reference in New Issue