clang_getCXTUResourceUsage: report memory used by HeaderSearch.

This required converting the StringMaps to use a BumpPtrAllocator.  I measured the
compile time and saw no observable regression.

llvm-svn: 136190

1 files changed, 7 insertions, 1 deletions

diff --git a/clang/lib/Lex/HeaderSearch.cpp b/clang/lib/Lex/HeaderSearch.cpp
index e2fd02983c4..789c93f2318 100644
--- a/clang/lib/Lex/HeaderSearch.cpp
+++ b/clang/lib/Lex/HeaderSearch.cpp
@@ -542,4 +542,10 @@ bool HeaderSearch::ShouldEnterIncludeFile(const FileEntry *File, bool isImport){
   return true;
 }
 
-
+size_t HeaderSearch::getTotalMemory() const {
+  return SearchDirs.capacity()
+    + FileInfo.capacity()
+    + HeaderMaps.capacity()
+    + LookupFileCache.getAllocator().getTotalMemory()
+    + FrameworkMap.getAllocator().getTotalMemory();
+}