tractor/_debug.py

@@ -254,7 +254,6 @@ async def _hijack_stdin_for_child(
                 #     assert await stream.receive() == 'pdb_unlock'
 
         except (
-            trio.MultiError,
             trio.BrokenResourceError,
             trio.Cancelled,  # by local cancellation
             trio.ClosedResourceError,  # by self._rx_chan
@@ -344,7 +343,6 @@ async def _breakpoint(
 
             except tractor.ContextCancelled:
                 log.warning('Root actor cancelled debug lock')
-                raise
 
             finally:
                 log.debug(f"Exiting debugger for actor {actor}")
@@ -409,14 +407,10 @@ async def _breakpoint(
                 'Root actor attempting to shield-acquire active tty lock'
                 f' owned by {_global_actor_in_debug}')
 
-            stats = _debug_lock.statistics()
+            with trio.CancelScope(shield=True):
-            if stats.owner:
+                # must shield here to avoid hitting a ``Cancelled`` and
-                breakpoint()
+                # a child getting stuck bc we clobbered the tty
-
+                await _debug_lock.acquire()
-            # with trio.CancelScope(shield=True):
-            # must shield here to avoid hitting a ``Cancelled`` and
-            # a child getting stuck bc we clobbered the tty
-            await _debug_lock.acquire()
 
         else:
             # may be cancelled

tractor/_root.py

@@ -238,7 +238,7 @@ def run(
 
 
 def run_daemon(
-    enable_modules: List[str],
+    rpc_module_paths: List[str],
     **kwargs
 ) -> None:
     """Spawn daemon actor which will respond to RPC.
@@ -247,9 +247,9 @@ def run_daemon(
     ``tractor.run(trio.sleep(float('inf')))`` such that the first actor spawned
     is meant to run forever responding to RPC requests.
     """
-    kwargs['enable_modules'] = list(enable_modules)
+    kwargs['rpc_module_paths'] = list(rpc_module_paths)
 
-    for path in enable_modules:
+    for path in rpc_module_paths:
         importlib.import_module(path)
 
     return run(partial(trio.sleep, float('inf')), **kwargs)

tractor/_spawn.py

@@ -331,7 +331,6 @@ async def new_proc(
             bind_addr=bind_addr,
             parent_addr=parent_addr,
             _runtime_vars=_runtime_vars,
-            infect_asyncio=infect_asyncio,
             task_status=task_status,
         )
 
@@ -347,7 +346,6 @@ async def mp_new_proc(
     parent_addr: Tuple[str, int],
     _runtime_vars: Dict[str, Any],  # serialized and sent to _child
     *,
-    infect_asyncio: bool = False,
     task_status: TaskStatus[Portal] = trio.TASK_STATUS_IGNORED
 
 ) -> None:

tractor/to_asyncio.py

@@ -1,7 +1,6 @@
-'''
+"""
 Infection apis for ``asyncio`` loops running ``trio`` using guest mode.
-
+"""
-'''
 import asyncio
 import inspect
 from typing import (
@@ -44,16 +43,15 @@ async def consume_asyncgen(
         to_trio.send_nowait(item)
 
 
-def _run_asyncio_task(
+async def run_task(
     func: Callable,
     *,
-    qsize: int = 1,
+    qsize: int = 2**10,
     _treat_as_stream: bool = False,
     **kwargs,
 ) -> Any:
     """Run an ``asyncio`` async function or generator in a task, return
     or stream the result back to ``trio``.
-
     """
     assert current_actor().is_infected_aio()
 
@@ -61,27 +59,20 @@ def _run_asyncio_task(
     from_trio = asyncio.Queue(qsize)  # type: ignore
     to_trio, from_aio = trio.open_memory_channel(qsize)  # type: ignore
 
-    from_aio._err = None
-
     args = tuple(inspect.getfullargspec(func).args)
 
     if getattr(func, '_tractor_steam_function', None):
         # the assumption is that the target async routine accepts the
         # send channel then it intends to yield more then one return
         # value otherwise it would just return ;P
-        # _treat_as_stream = True
+        _treat_as_stream = True
-        assert qsize > 1
 
     # allow target func to accept/stream results manually by name
     if 'to_trio' in args:
         kwargs['to_trio'] = to_trio
-
     if 'from_trio' in args:
         kwargs['from_trio'] = from_trio
 
-    # if 'from_aio' in args:
-    #     kwargs['from_aio'] = from_aio
-
     coro = func(**kwargs)
 
     cancel_scope = trio.CancelScope()
@@ -89,10 +80,8 @@ def _run_asyncio_task(
     # start the asyncio task we submitted from trio
     if inspect.isawaitable(coro):
         task = asyncio.create_task(run_coro(to_trio, coro))
-
     elif inspect.isasyncgen(coro):
         task = asyncio.create_task(consume_asyncgen(to_trio, coro))
-
     else:
         raise TypeError(f"No support for invoking {coro}")
 
@@ -102,92 +91,58 @@ def _run_asyncio_task(
         """Cancel the calling ``trio`` task on error.
         """
         nonlocal aio_err
-        try:
+        aio_err = task.exception()
-            aio_err = task.exception()
-        except asyncio.CancelledError as cerr:
-            aio_err = cerr
 
         if aio_err:
             log.exception(f"asyncio task errorred:\n{aio_err}")
 
         cancel_scope.cancel()
-        from_aio._err = aio_err
-        from_aio.close()
 
     task.add_done_callback(cancel_trio)
 
-    return task, from_aio, to_trio, cancel_scope
+    # async iterator
+    if inspect.isasyncgen(coro) or _treat_as_stream:
 
+        async def stream_results():
+            try:
+                with cancel_scope:
+                    # stream values upward
+                    async with from_aio:
+                        async for item in from_aio:
+                            yield item
 
-async def run_task(
+                if cancel_scope.cancelled_caught:
+                    # always raise from any captured asyncio error
+                    if aio_err:
+                        raise aio_err
 
-    func: Callable,
+            except BaseException as err:
-    *,
+                if aio_err is not None:
+                    # always raise from any captured asyncio error
+                    raise err from aio_err
+                else:
+                    raise
 
-    qsize: int = 2**10,
+        return stream_results()
-    _treat_as_stream: bool = False,
-    **kwargs,
-
-) -> Any:
-    """Run an ``asyncio`` async function or generator in a task, return
-    or stream the result back to ``trio``.
-
-    """
-    # streaming ``asyncio`` task
-    if _treat_as_stream:
-
-        task, from_aio, to_trio, cs = _run_asyncio_task(
-            func,
-            qsize=2**8,
-            **kwargs,
-        )
-
-        # naively expect the mem chan api to do the job
-        # of handling cross-framework cancellations / errors
-        return from_aio
 
     # simple async func
     try:
-        task, from_aio, to_trio, cs = _run_asyncio_task(
+        with cancel_scope:
-            func,
+            # return single value
-            qsize=1,
-            **kwargs,
-        )
-
-        # return single value
-        with cs:
             return await from_aio.receive()
 
-    except trio.Cancelled:
+        if cancel_scope.cancelled_caught:
-        if not task.done():
+            # always raise from any captured asyncio error
-            task.cancel()
+            if aio_err:
-        raise
+                raise aio_err
 
-    finally:
+    # Do we need this?
-        if from_aio._err:
+    except BaseException as err:
-            raise from_aio._err
+        if aio_err is not None:
-
+            # always raise from any captured asyncio error
-
+            raise err from aio_err
-# TODO: explicit api for the streaming case where
+        else:
-# we pull from the mem chan in an async generator?
+            raise
-# This ends up looking more like our ``Portal.open_stream_from()``
-# NB: code below is untested.
-
-# @asynccontextmanager
-# async def stream_from_task(
-
-#     target: Callable[Any],
-#     **kwargs,
-
-# ) -> AsyncIterator[Any]:
-
-#     from_aoi = await run_task(target, _treat_as_stream=True, **kwargs)
-
-#     with cancel_scope:
-#         # stream values upward
-#         async with from_aio:
-#             async for item in from_aio:
-#                 yield item
 
 
 def run_as_asyncio_guest(