[PATCH] D82964: [clangd] Config: loading and caching config from disk.

[Kadir Cetinkaya via Phabricator via cfe-commits]

kadircet added inline comments.


================
Comment at: clang-tools-extra/clangd/ConfigProvider.cpp:39
+    auto Buf = FS.getBufferForFile(Path);
+    // If stat() succeeds but we failed to read, retry once and cache failure.
+    if (!Buf)
----------------
why do we want to cache failure case for missing files ?

If it is truly missing and we didn't race with another process (likely git-checkout), the next stat will fail and we'll return a no-op fragment.
If it was a race, we want to pick it up on the next run (and reading twice might not have enough of a delay in between), so why not just cache with a sentinel key in here too?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D82964/new/

https://reviews.llvm.org/D82964