Improve crash recovery cleanup to recovery CompilerInstances during crash recovery. This was a huge resource "root" during crashes.

This change requires making a bunch of fundamental Clang structures (optionally) reference counted to allow correct
ownership semantics of these objects (e.g., ASTContext) to play out between an active ASTUnit and CompilerInstance
object.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128011 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 1 deletions

diff --git a/include/clang/Basic/FileManager.h b/include/clang/Basic/FileManager.h
index 465f856f94..2ca344d553 100644
--- a/include/clang/Basic/FileManager.h
+++ b/include/clang/Basic/FileManager.h
@@ -15,6 +15,7 @@
 #define LLVM_CLANG_FILEMANAGER_H
 
 #include "clang/Basic/FileSystemOptions.h"
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
@@ -105,7 +106,7 @@ public:
 /// properties, such as uniquing files based on "inode", so that a file with two
 /// names (e.g. symlinked) will be treated as a single file.
 ///
-class FileManager {
+class FileManager : public llvm::RefCountedBase<FileManager> {
   FileSystemOptions FileSystemOpts;
 
   class UniqueDirContainer;