[PATCH] D82891: [clangd] Fix race in FileIndex that sometimes temporarily lost updates.

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
sammccall added a reviewer: kadircet.
Herald added subscribers: cfe-commits, usaxena95, arphaman, jkorous, MaskRay, ilya-biryukov.
Herald added a project: clang.

FileIndex was built out of threadsafe components, so update() didn't have data
races, but wasn't actually correct.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D82891

Files:
  clang-tools-extra/clangd/index/FileIndex.cpp
  clang-tools-extra/clangd/index/FileIndex.h
  clang-tools-extra/clangd/index/Symbol.h
  clang-tools-extra/clangd/unittests/FileIndexTests.cpp

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