[Lldb-commits] [PATCH] D117632: [lldb] Instrument SB API with signposts

[Jonas Devlieghere via Phabricator via lldb-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG156b997251db: [lldb] Instrument SB API with signposts (authored by JDevlieghere).
Herald added a project: LLDB.

Changed prior to commit:
  https://reviews.llvm.org/D117632?vs=401369&id=401833#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D117632/new/

https://reviews.llvm.org/D117632

Files:
  lldb/include/lldb/Utility/Instrumentation.h
  lldb/source/Utility/Instrumentation.cpp


Index: lldb/source/Utility/Instrumentation.cpp
===================================================================
--- lldb/source/Utility/Instrumentation.cpp
+++ lldb/source/Utility/Instrumentation.cpp
@@ -6,6 +6,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "lldb/Utility/Instrumentation.h"
+#include "llvm/Support/Signposts.h"
+
 #include <cstdio>
 #include <cstdlib>
 #include <limits>
@@ -17,21 +19,25 @@
 // Whether we're currently across the API boundary.
 static thread_local bool g_global_boundary = false;
 
+// Instrument SB API calls with singposts when supported.
+static llvm::ManagedStatic<llvm::SignpostEmitter> g_api_signposts;
+
 Instrumenter::Instrumenter(llvm::StringRef pretty_func,
                            std::string &&pretty_args)
-    : m_local_boundary(false) {
+    : m_pretty_func(pretty_func), m_local_boundary(false) {
   if (!g_global_boundary) {
     g_global_boundary = true;
     m_local_boundary = true;
+    g_api_signposts->startInterval(this, m_pretty_func);
   }
   LLDB_LOG(GetLogIfAllCategoriesSet(LIBLLDB_LOG_API), "[{0}] {1} ({2})",
-           m_local_boundary ? "external" : "internal", pretty_func,
+           m_local_boundary ? "external" : "internal", m_pretty_func,
            pretty_args);
 }
 
-Instrumenter::~Instrumenter() { UpdateBoundary(); }
-
-void Instrumenter::UpdateBoundary() {
-  if (m_local_boundary)
+Instrumenter::~Instrumenter() {
+  if (m_local_boundary) {
     g_global_boundary = false;
+    g_api_signposts->endInterval(this, m_pretty_func);
+  }
 }
Index: lldb/include/lldb/Utility/Instrumentation.h
===================================================================
--- lldb/include/lldb/Utility/Instrumentation.h
+++ lldb/include/lldb/Utility/Instrumentation.h
@@ -86,6 +86,8 @@
 private:
   void UpdateBoundary();
 
+  llvm::StringRef m_pretty_func;
+
   /// Whether this function call was the one crossing the API boundary.
   bool m_local_boundary = false;
 };


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