forked from goodboy/tractor
0c6d512ba4
Such that we are able to (finally) detect when we should
`Context._scope.cancel()` specifically when the `.parent_task` is
**not** blocking on receiving from the underlying `._rx_chan`, since if
the task is blocking on `.receive()` it will call `.cancel()`
implicitly.
This is a lot to explain with very little code actually needed for the
implementation (are we like `trio` yet anyone?? XD) but the main jist is
that `Context._maybe_cancel_and_set_remote_error()` needed the
additional case of calling `._scope.cancel()` whenever we know that
a remote-error/ctxc won't be immediately handled, bc user code is doing
non `Context`-API things, and result in a similar outcome as if that
task was waiting on `Context.wait_for_result()` or `.__aexite__()`.
Impl details,
- add a new `._is_blocked_on_rx_chan()` method which predicates whether
the (new) `.parent_task` is blocking on `._rx_chan.receive()`.
* see various stipulations about the current impl and how we might
need to adjust for the future given `trio`'s commitment to the
`Task.custom_sleep_data` attr..
- add `.parent_task`, a pub wrapper for `._task`.
- check for `not ._is_blocked_on_rx_chan()` before manually cancelling
the local `.parent_task`
- minimize the surrounding branch case expressions.
Other,
- tweak a couple logs.
- add a new `.cancel()` pre-started msg.
- mask the `.cancel_called` setter, it's only (been) used for tracing.
- todos around maybe moving the `._nursery` allocation "around" the
`.start_remote_task()` call and various subsequent tweaks therein.
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| .. | ||
| _testing | ||
| devx | ||
| experimental | ||
| ipc | ||
| msg | ||
| trionics | ||
| __init__.py | ||
| _addr.py | ||
| _child.py | ||
| _clustering.py | ||
| _context.py | ||
| _discovery.py | ||
| _entry.py | ||
| _exceptions.py | ||
| _forkserver_override.py | ||
| _mp_fixup_main.py | ||
| _multiaddr.py | ||
| _portal.py | ||
| _root.py | ||
| _rpc.py | ||
| _runtime.py | ||
| _spawn.py | ||
| _state.py | ||
| _streaming.py | ||
| _supervise.py | ||
| log.py | ||
| to_asyncio.py | ||