Added very lightweight, statically-allocated

counters for a variety of metrics associated
with expression parsing.  This should give some
idea of how much work the expression parser is
doing on Clang's behalf, and help with hopefully
reducing that load over time.

<rdar://problem/13210748> Audit type search/import for expressions

llvm-svn: 176714

1 files changed, 10 insertions, 1 deletions

diff --git a/lldb/source/Expression/ClangExpressionDeclMap.cpp b/lldb/source/Expression/ClangExpressionDeclMap.cpp
index 1b621224be6..078825797dc 100644
--- a/lldb/source/Expression/ClangExpressionDeclMap.cpp
+++ b/lldb/source/Expression/ClangExpressionDeclMap.cpp
@@ -75,7 +75,9 @@ ClangExpressionDeclMap::~ClangExpressionDeclMap()
 
 bool 
 ClangExpressionDeclMap::WillParse(ExecutionContext &exe_ctx)
-{    
+{
+    ClangASTMetrics::ClearLocalCounters();
+    
     EnableParserVars();
     m_parser_vars->m_exe_ctx = exe_ctx;
     
@@ -111,6 +113,11 @@ ClangExpressionDeclMap::WillParse(ExecutionContext &exe_ctx)
 void 
 ClangExpressionDeclMap::DidParse()
 {
+    lldb::LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
+
+    if (log)
+        ClangASTMetrics::DumpCounters(log);
+    
     if (m_parser_vars.get())
     {
         for (size_t entity_index = 0, num_entities = m_found_entities.GetSize();
@@ -2605,6 +2612,8 @@ ClangExpressionDeclMap::FindExternalVisibleDecls (NameSearchContext &context)
 {
     assert (m_ast_context);
     
+    ClangASTMetrics::RegisterVisibleQuery();
+    
     const ConstString name(context.m_decl_name.getAsString().c_str());
     
     lldb::LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));