[PATCH] D138423: [bolt] Use llvm::sys::RWMutex instead of std::shared_timed_mutex

[Nico Weber via Phabricator via llvm-commits]

thakis created this revision.
thakis added reviewers: bolt, rafaelauler.
Herald added a reviewer: rafauler.
Herald added subscribers: treapster, ayermolo.
Herald added a reviewer: Amir.
Herald added a reviewer: maksfb.
Herald added a project: All.
thakis requested review of this revision.
Herald added a subscriber: yota9.

This has the following advantages:

- std::shared_timed_mutex is macOS 10.12+ only. llvm::sys::RWMutex automatically switches to a different implementation internally when targeting older macOS versions.
- bolt only needs std::shared_mutex, not std::shared_timed_mutex. llvm::sys::RWMutex automatically uses std::shared_mutex internally where available.

std::shared_mutex and RWMutex have the same API, so no code changes
other than types and includes are needed.


https://reviews.llvm.org/D138423

Files:
  bolt/include/bolt/Core/BinaryContext.h
  bolt/include/bolt/Core/BinaryFunction.h
  bolt/include/bolt/Passes/Aligner.h
  bolt/include/bolt/Passes/Instrumentation.h
  bolt/lib/Core/BinaryBasicBlock.cpp
  bolt/lib/Core/BinaryContext.cpp
  bolt/lib/Core/Exceptions.cpp
  bolt/lib/Core/ParallelUtilities.cpp
  bolt/lib/Passes/Aligner.cpp
  bolt/lib/Passes/Instrumentation.cpp

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