Joshua Oreman

It would be nice if unbind() from another thread could interrupt run()

4

This seems to be a common user request, e.g., see #42. At the kernel level we probably need to send some kind of no-op request on the queue in order...

Decide what to do about a single exception raised out of a nursery

7

In current Trio, if one task in a nursery raises an exception, then that exception directly propagates out of the nursery. If multiple tasks in a nursery raise exceptions, then...

Idea: TreeVar (context variables that follow stack discipline)

19

A context variable is a convenient way to track something about the scope in which a task executes. Sometimes that "something" effectively constitutes a promise to child tasks that some...

Inside-out guest mode

6

This PR adds `become_guest_for()`, which moves an existing Trio run to be the guest of a newly-started host loop. When the host loop exits, the Trio run continues on, as...

spawn_system_task() doesn't work immediately after start_guest_run()

2

Here's a fun one: ``` In [1]: import trio In [2]: thunks = [] In [3]: trio.lowlevel.start_guest_run(trio.sleep_forever, run_sync_soon_threadsafe=thunks.append, done_callback=print) In [4]: trio.lowlevel.spawn_system_task(trio.sleep_forever) Out[4]: In [5]: thunks.pop(0)() In [6]: thunks.pop(0)() Error(TrioInternalError('internal...

Skip schedule points if we've done one recently enough

4

This is a performance improvement that we keep talking about, but I couldn't find an issue for it, except #32 which is broader-reaching. The idea: `checkpoint_if_cancelled()` (which is also used...

Recorded profile end time is too late, making it hard to timestamp each sample

1

`vmprof.disable()` stops sampling, then does an expensive scan of code objects and debug info to symbolize addresses, then fsync()'s the profile, and only then records the end timestamp. In my...

SIGALRM not always delivered to main thread in practice

1

I'm using vmprof in real-time mode to profile the main thread of a Linux application with a number of additional non-Python threads (created by various C libraries we're using). I've...

What to do about calls to get_event_loop() in Trio context when no loop is active?

6

Many asyncio objects (such as asyncio.Lock) call `asyncio.get_event_loop()` in their constructor, if no loop was passed. Much asyncio-using code seems to assume that such objects can be created when no...

Currently, trio-asyncio doesn't install async generator hooks, so asyncio tasks get Trio's hooks, which try to close asyncio's async generators in Trio context. We should install our own hooks which...