Move Diagnostic/DiagClient/FileManager from Indexer => ASTUnit.

Removing this shared data should enable clang_createTranslationUnit/clang_createTranslationUnitFromSourceFile to be run from multiple threads (related to <rdar://problem/7303432>).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84499 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Frontend/ASTUnit.h

@@ -16,6 +16,8 @@
 
 #include "clang/Basic/SourceManager.h"
 #include "llvm/ADT/OwningPtr.h"
+#include "clang/Frontend/TextDiagnosticBuffer.h"
+#include "clang/Basic/FileManager.h"
 #include <string>
 
 namespace clang {
@@ -23,6 +25,7 @@ namespace clang {
   class FileEntry;
   class SourceManager;
   class Diagnostic;
+  class TextDiagnosticBuffer;
   class HeaderSearch;
   class TargetInfo;
   class Preprocessor;
@@ -32,7 +35,10 @@ namespace clang {
 /// \brief Utility class for loading a ASTContext from a PCH file.
 ///
 class ASTUnit {
-  Diagnostic                       &Diags;
+  TextDiagnosticBuffer DiagClient;
+  Diagnostic Diags;
+  FileManager FileMgr;
+
   SourceManager                     SourceMgr;
   llvm::OwningPtr<HeaderSearch>     HeaderInfo;
   llvm::OwningPtr<TargetInfo>       Target;
@@ -47,7 +53,7 @@ class ASTUnit {
   
   ASTUnit(const ASTUnit&); // DO NOT IMPLEMENT
   ASTUnit &operator=(const ASTUnit &); // DO NOT IMPLEMENT
-  ASTUnit(Diagnostic &_Diag);
+  ASTUnit();
 
 public:
   ~ASTUnit();
@@ -64,7 +70,9 @@ public:
   const Diagnostic &getDiagnostic() const { return Diags; }
         Diagnostic &getDiagnostic()       { return Diags; }
 
-  FileManager &getFileManager();
+  const FileManager &getFileManager() const { return FileMgr; }
+        FileManager &getFileManager()       { return FileMgr; }
+  
   const std::string &getOriginalSourceFileName();
   const std::string &getPCHFileName();
 
@@ -85,8 +93,6 @@ public:
   ///
   /// \returns - The initialized ASTUnit or null if the PCH failed to load.
   static ASTUnit *LoadFromPCHFile(const std::string &Filename,
-                                  Diagnostic &Diags,
-                                  FileManager &FileMgr,
                                   std::string *ErrMsg = 0,
                                   bool OnlyLocalDecls = false,
                                   bool UseBumpAllocator = false);

include/clang/Index/Indexer.h

@@ -14,13 +14,11 @@
 #ifndef LLVM_CLANG_INDEX_INDEXER_H
 #define LLVM_CLANG_INDEX_INDEXER_H
 
-#include "clang/Frontend/TextDiagnosticBuffer.h"
 #include "clang/Index/IndexProvider.h"
 #include "clang/Index/Entity.h"
 #include "clang/Index/GlobalSelector.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/DenseMap.h"
-#include "clang/Basic/FileManager.h"
 #include <map>
 
 namespace clang {
@@ -39,16 +37,10 @@ public:
   typedef std::map<GlobalSelector, TUSetTy> SelMapTy;
 
   explicit Indexer(Program &prog) :
-    Prog(prog), Diags(&DiagClient) { }
+    Prog(prog) { }
 
   Program &getProgram() const { return Prog; }
 
-  Diagnostic &getDiagnostics() { return Diags; }
-  const Diagnostic &getDiagnostics() const { return Diags; }
-
-  FileManager &getFileManager() { return FileMgr; }
-  const FileManager &getFileManager() const { return FileMgr; }
-
   /// \brief Find all Entities and map them to the given translation unit.
   void IndexAST(TranslationUnit *TU);
 
@@ -59,9 +51,6 @@ public:
 
 private:
   Program &Prog;
-  TextDiagnosticBuffer DiagClient;
-  Diagnostic Diags;
-  FileManager FileMgr;
 
   MapTy Map;
   CtxTUMapTy CtxTUMap;

lib/Frontend/ASTUnit.cpp

@@ -25,7 +25,9 @@
 
 using namespace clang;
 
-ASTUnit::ASTUnit(Diagnostic &_Diags) : Diags(_Diags), tempFile(false) { }
+ASTUnit::ASTUnit() : tempFile(false) {
+  Diags.setClient(&DiagClient);
+}
 ASTUnit::~ASTUnit() { 
   if (tempFile)
     llvm::sys::Path(getPCHFileName()).eraseFromDisk();
@@ -88,19 +90,13 @@ const std::string &ASTUnit::getPCHFileName() {
   return dyn_cast<PCHReader>(Ctx->getExternalSource())->getFileName();
 }
 
-FileManager &ASTUnit::getFileManager() {
-  return HeaderInfo->getFileMgr();
-}
-
 ASTUnit *ASTUnit::LoadFromPCHFile(const std::string &Filename,
-                                  Diagnostic &Diags,
-                                  FileManager &FileMgr,
                                   std::string *ErrMsg,
                                   bool OnlyLocalDecls,
                                   bool UseBumpAllocator) {
-  llvm::OwningPtr<ASTUnit> AST(new ASTUnit(Diags));
+  llvm::OwningPtr<ASTUnit> AST(new ASTUnit());
   AST->OnlyLocalDecls = OnlyLocalDecls;
-  AST->HeaderInfo.reset(new HeaderSearch(FileMgr));
+  AST->HeaderInfo.reset(new HeaderSearch(AST->getFileManager()));
 
   // Gather Info for preprocessor construction later on.
 
@@ -113,7 +109,7 @@ ASTUnit *ASTUnit::LoadFromPCHFile(const std::string &Filename,
   llvm::OwningPtr<PCHReader> Reader;
   llvm::OwningPtr<ExternalASTSource> Source;
 
-  Reader.reset(new PCHReader(AST->getSourceManager(), FileMgr, AST->Diags));
+  Reader.reset(new PCHReader(AST->getSourceManager(), AST->getFileManager(), AST->Diags));
   Reader->setListener(new PCHInfoCollector(LangInfo, HeaderInfo, TargetTriple,
                                            Predefines, Counter));
 

tools/CIndex/CIndex.cpp

@@ -347,8 +347,7 @@ CXTranslationUnit clang_createTranslationUnit(
   std::string astName(ast_filename);
   std::string ErrMsg;
   
-  return ASTUnit::LoadFromPCHFile(astName, CXXIdx->getDiagnostics(),
-                                  CXXIdx->getFileManager(), &ErrMsg,
+  return ASTUnit::LoadFromPCHFile(astName, &ErrMsg,
                                   CXXIdx->getOnlyLocalDecls(),
                                   /* UseBumpAllocator = */ true);
 }

tools/clang-cc/clang-cc.cpp

@@ -2188,8 +2188,7 @@ static void ProcessASTInputFile(const std::string &InFile, ProgActions PA,
                                 Diagnostic &Diags, FileManager &FileMgr,
                                 llvm::LLVMContext& Context) {
   std::string Error;
-  llvm::OwningPtr<ASTUnit> AST(ASTUnit::LoadFromPCHFile(InFile, Diags, FileMgr,
-                                                        &Error));
+  llvm::OwningPtr<ASTUnit> AST(ASTUnit::LoadFromPCHFile(InFile, &Error));
   if (!AST) {
     Diags.Report(FullSourceLoc(), diag::err_fe_invalid_ast_file) << Error;
     return;

tools/index-test/index-test.cpp

@@ -225,8 +225,7 @@ int main(int argc, char **argv) {
     std::string ErrMsg;
     llvm::OwningPtr<ASTUnit> AST;
 
-    AST.reset(ASTUnit::LoadFromPCHFile(InFile, Idxer.getDiagnostics(),
-                                       Idxer.getFileManager(), &ErrMsg));
+    AST.reset(ASTUnit::LoadFromPCHFile(InFile, &ErrMsg));
     if (!AST) {
       llvm::errs() << "[" << InFile << "] Error: " << ErrMsg << '\n';
       return 1;
@@ -244,7 +243,7 @@ int main(int argc, char **argv) {
 
   if (!PointAtLocation.empty()) {
     const std::string &Filename = PointAtLocation[0].FileName;
-    const FileEntry *File = Idxer.getFileManager().getFile(Filename);
+    const FileEntry *File = FirstAST->getFileManager().getFile(Filename);
     if (File == 0) {
       llvm::errs() << "File '" << Filename << "' does not exist\n";
       return 1;
@@ -253,7 +252,7 @@ int main(int argc, char **argv) {
     // Safety check. Using an out-of-date AST file will only lead to crashes
     // or incorrect results.
     // FIXME: Check all the source files that make up the AST file.
-    const FileEntry *ASTFile = Idxer.getFileManager().getFile(FirstFile);
+    const FileEntry *ASTFile = FirstAST->getFileManager().getFile(FirstFile);
     if (File->getModificationTime() > ASTFile->getModificationTime()) {
       llvm::errs() << "[" << FirstFile << "] Error: " <<
         "Pointing at a source file which was modified after creating "