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18 commits

Author SHA1 Message Date
Sean Quah
79e7c2c426
Fix edge case where a Linearizer could get stuck ()
Just after a task acquires a contended `Linearizer` lock, it sleeps.
If the task is cancelled during this sleep, we need to release the lock.

Signed-off-by: Sean Quah <seanq@element.io>
2022-04-05 17:19:16 +01:00
Sean Quah
800ba87cc8
Refactor and convert Linearizer to async ()
Refactor and convert `Linearizer` to async. This makes a `Linearizer`
cancellation bug easier to fix.

Also refactor to use an async context manager, which eliminates an
unlikely footgun where code that doesn't immediately use the context
manager could forget to release the lock.

Signed-off-by: Sean Quah <seanq@element.io>
2022-04-05 15:43:52 +01:00
Sean Quah
41b5f72677
Convert Linearizer tests from inlineCallbacks to async ()
Signed-off-by: Sean Quah <seanq@element.io>
2022-04-05 14:56:09 +01:00
Jonathan de Jong
4b965c862d
Remove redundant "coding: utf-8" lines ()
Part of 

Removes all redundant `# -*- coding: utf-8 -*-` lines from files, as python 3 automatically reads source code as utf-8 now.

`Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>`
2021-04-14 15:34:27 +01:00
Dagfinn Ilmari Mannsåker
a3f11567d9
Replace all remaining six usage with native Python 3 equivalents () 2020-06-16 08:51:47 -04:00
Erik Johnston
a72d5f39db Add test for Linearizer.is_queued(..) 2020-05-27 19:41:06 +01:00
Richard van der Hoff
39230d2171
Clean up some LoggingContext stuff ()
* Pull Sentinel out of LoggingContext

... and drop a few unnecessary references to it

* Factor out LoggingContext.current_context

move `current_context` and `set_context` out to top-level functions.

Mostly this means that I can more easily trace what's actually referring to
LoggingContext, but I think it's generally neater.

* move copy-to-parent into `stop`

this really just makes `start` and `stop` more symetric. It also means that it
behaves correctly if you manually `set_log_context` rather than using the
context manager.

* Replace `LoggingContext.alive` with `finished`

Turn `alive` into `finished` and make it a bit better defined.
2020-03-24 14:45:33 +00:00
Amber Brown
463b072b12
Move logging utilities out of the side drawer of util/ and into logging/ () 2019-07-04 00:07:04 +10:00
Andrew Morgan
caa76e6021
Remove periods from copyright headers () 2019-04-11 17:08:13 +01:00
black
8b3d9b6b19 Run black. 2018-08-10 23:54:09 +10:00
Amber Brown
b37c472419
Rename async to async_helpers because async is a keyword on Python 3.7 () 2018-08-10 23:50:21 +10:00
Richard van der Hoff
3d6df84658 Test and fix support for cancellation in Linearizer 2018-07-20 13:59:55 +01:00
Richard van der Hoff
7c712f95bb Combine Limiter and Linearizer
Linearizer was effectively a Limiter with max_count=1, so rather than
maintaining two sets of code, let's combine them.
2018-07-20 13:11:43 +01:00
Amber Brown
49af402019 run isort 2018-07-09 16:09:20 +10:00
Amber Brown
77ac14b960
Pass around the reactor explicitly () 2018-06-22 09:37:10 +01:00
Adrian Tschira
a1a3c9660f Make tests py3 compatible
This is a mixed commit that fixes various small issues

 * print parentheses
 * 01 is invalid syntax (it was octal in py2)
 * [x for i in 1, 2] is invalid syntax
 * six moves

Signed-off-by: Adrian Tschira <nota@notafile.com>
2018-04-16 00:39:32 +02:00
Richard van der Hoff
4fad8efbfb Fix stackoverflow and logcontexts from linearizer
1. make it not blow out the stack when there are more than 50 things waiting
   for a lock. Fixes https://github.com/matrix-org/synapse/issues/2505.

2. Make it not mess up the log contexts.
2017-10-11 15:05:05 +01:00
Erik Johnston
af03ecf352 Deduplicate joins 2016-04-07 14:19:02 +01:00