[GraphBolt] Make `PartitionedCachePolicy` thread safe.

mfbalin commented 1 month ago

Description

In our read_async pipeline, multiple async threads can try to access the cache policy so we protect it with a mutex. Otherwise the code crashes horribly due to data races. Needed by #7559.

Checklist

Please feel free to remove inapplicable items for your PR.

[ ] The PR title starts with [$CATEGORY] (such as [NN], [Model], [Doc], [Feature]])
[ ] I've leverage the tools to beautify the python and c++ code.
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[ ] All changes have test coverage
[ ] Code is well-documented
[ ] To the best of my knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change
[ ] Related issue is referred in this PR
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Changes

dgl-bot commented 1 month ago

To trigger regression tests:

@dgl-bot run [instance-type] [which tests] [compare-with-branch]; For example: @dgl-bot run g4dn.4xlarge all dmlc/master or @dgl-bot run c5.9xlarge kernel,api dmlc/master

dgl-bot commented 1 month ago

Commit ID: c0364006745f3ba6c0c8b8b2483342c91da82f49

Build ID: 1

Status: ⚪️ CI test cancelled due to overrun.

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dgl-bot commented 1 month ago

Commit ID: f071bf399af62c45622d24124376b85cbb3d307d

Build ID: 2

Status: ✅ CI test succeeded.

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dmlc / dgl