[PATCH] D155619: [clangd] Always run preamble indexing on a separate thread

[Kadir Cetinkaya via Phabricator via cfe-commits]

kadircet created this revision.
kadircet added a reviewer: sammccall.
Herald added a subscriber: arphaman.
Herald added a project: All.
kadircet requested review of this revision.
Herald added subscribers: cfe-commits, MaskRay, ilya-biryukov.
Herald added a project: clang-tools-extra.

This has been the default in our production setup for weeks now,
showing great improvements to latency and no problems around stability or
correctness of the results.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D155619

Files:
  clang-tools-extra/clangd/ClangdServer.cpp
  clang-tools-extra/clangd/ClangdServer.h


Index: clang-tools-extra/clangd/ClangdServer.h
===================================================================
--- clang-tools-extra/clangd/ClangdServer.h
+++ clang-tools-extra/clangd/ClangdServer.h
@@ -185,10 +185,6 @@
     /// regions in the document.
     bool PublishInactiveRegions = false;
 
-    /// Whether to run preamble indexing asynchronously in an independent
-    /// thread.
-    bool AsyncPreambleIndexing = false;
-
     explicit operator TUScheduler::Options() const;
   };
   // Sensible default options for use in tests.
Index: clang-tools-extra/clangd/ClangdServer.cpp
===================================================================
--- clang-tools-extra/clangd/ClangdServer.cpp
+++ clang-tools-extra/clangd/ClangdServer.cpp
@@ -94,7 +94,7 @@
                              ASTCtx.getPreprocessor(), *CanonIncludes);
     };
 
-    if (Opts.AsyncPreambleIndexing && Tasks) {
+    if (Tasks) {
       Tasks->runAsync("Preamble indexing for:" + Path + Version,
                       std::move(Task));
     } else


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