kadircet created this revision.
kadircet added a reviewer: sammccall.
Herald added subscribers: cfe-commits, usaxena95, arphaman, jkorous, MaskRay,
javed.absar, ilya-biryukov.
Herald added a project: clang.
Expose AST cache access statistics. Instead of doing this we can also
expose EventTracer::instant. Currently it is only accessible through trace::log,
which only provides plaintext information.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D78429
Files:
clang-tools-extra/clangd/TUScheduler.cpp
Index: clang-tools-extra/clangd/TUScheduler.cpp
===================================================================
--- clang-tools-extra/clangd/TUScheduler.cpp
+++ clang-tools-extra/clangd/TUScheduler.cpp
@@ -143,10 +143,14 @@
/// the cache anymore. If nullptr was cached for \p K, this function will
/// return a null unique_ptr wrapped into an optional.
llvm::Optional<std::unique_ptr<ParsedAST>> take(Key K) {
+ trace::Span Span("ASTCache");
std::unique_lock<std::mutex> Lock(Mut);
auto Existing = findByKey(K);
- if (Existing == LRU.end())
+ if (Existing == LRU.end()) {
+ SPAN_ATTACH(Span, "Hit", false);
return None;
+ }
+ SPAN_ATTACH(Span, "Hit", true);
std::unique_ptr<ParsedAST> V = std::move(Existing->second);
LRU.erase(Existing);
// GCC 4.8 fails to compile `return V;`, as it tries to call the copy
Index: clang-tools-extra/clangd/TUScheduler.cpp
===================================================================
--- clang-tools-extra/clangd/TUScheduler.cpp
+++ clang-tools-extra/clangd/TUScheduler.cpp
@@ -143,10 +143,14 @@
/// the cache anymore. If nullptr was cached for \p K, this function will
/// return a null unique_ptr wrapped into an optional.
llvm::Optional<std::unique_ptr<ParsedAST>> take(Key K) {
+ trace::Span Span("ASTCache");
std::unique_lock<std::mutex> Lock(Mut);
auto Existing = findByKey(K);
- if (Existing == LRU.end())
+ if (Existing == LRU.end()) {
+ SPAN_ATTACH(Span, "Hit", false);
return None;
+ }
+ SPAN_ATTACH(Span, "Hit", true);
std::unique_ptr<ParsedAST> V = std::move(Existing->second);
LRU.erase(Existing);
// GCC 4.8 fails to compile `return V;`, as it tries to call the copy
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