PR #2397 Fastmutex - SemanticDiff

Fastmutex #2397

nathdobson wants to merge 3 commits into rust-lang:master from nathdobson:fastmutex

Add test to demonstration quadratic performance in Mutex.

fc025f14

Remove excessively long test case.

27701851

Use VecDeque to track valid wake keys in Mutex. This should provide

d62bd9a1

taiki-e added A-lock

hyyking commented on 2021-08-05

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