From 4f32786ac45210143654390177105eb749b614e9 Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Mon, 21 Mar 2011 18:40:17 +0000
Subject: 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
---
 lib/Frontend/FrontendAction.cpp | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

(limited to 'lib/Frontend/FrontendAction.cpp')

diff --git a/lib/Frontend/FrontendAction.cpp b/lib/Frontend/FrontendAction.cpp
index 5c34e9491b..42da44c2c7 100644
--- a/lib/Frontend/FrontendAction.cpp
+++ b/lib/Frontend/FrontendAction.cpp
@@ -258,10 +258,10 @@ bool FrontendAction::BeginSourceFile(CompilerInstance &CI,
   // matching EndSourceFile().
   failure:
   if (isCurrentFileAST()) {
-    CI.takeASTContext();
-    CI.takePreprocessor();
-    CI.takeSourceManager();
-    CI.takeFileManager();
+    CI.setASTContext(0);
+    CI.setPreprocessor(0);
+    CI.setSourceManager(0);
+    CI.setFileManager(0);
   }
 
   CI.getDiagnosticClient().EndSourceFile();
@@ -313,7 +313,7 @@ void FrontendAction::EndSourceFile() {
     CI.takeASTConsumer();
     if (!isCurrentFileAST()) {
       CI.takeSema();
-      CI.takeASTContext();
+      CI.resetAndLeakASTContext();
     }
   } else {
     if (!isCurrentFileAST()) {
@@ -342,10 +342,10 @@ void FrontendAction::EndSourceFile() {
 
   if (isCurrentFileAST()) {
     CI.takeSema();
-    CI.takeASTContext();
-    CI.takePreprocessor();
-    CI.takeSourceManager();
-    CI.takeFileManager();
+    CI.resetAndLeakASTContext();
+    CI.resetAndLeakPreprocessor();
+    CI.resetAndLeakSourceManager();
+    CI.resetAndLeakFileManager();
   }
 
   setCompilerInstance(0);
-- 
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