Fix a comment typo.

[oota-llvm.git] / lib / VMCore / LLVMContextImpl.h

diff --git a/lib/VMCore/LLVMContextImpl.h b/lib/VMCore/LLVMContextImpl.h
index 966f54b3e222d23876a83b3ed1a1cdf02bbf8410..83888c3907bf99f9b9f2f226e7614a74d6657078 100644 (file)
--- a/lib/VMCore/LLVMContextImpl.h
+++ b/lib/VMCore/LLVMContextImpl.h
@@ -1,4 +1,4 @@
-//===----------------- LLVMContextImpl.h - Implementation ------*- C++ -*--===//
+//===-- LLVMContextImpl.h - The LLVMContextImpl opaque class --------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -16,11 +16,15 @@
 #define LLVM_LLVMCONTEXT_IMPL_H
 
 #include "ConstantsContext.h"
+#include "LeaksContext.h"
 #include "TypesContext.h"
 #include "llvm/LLVMContext.h"
+#include "llvm/Metadata.h"
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
+#include "llvm/System/Mutex.h"
 #include "llvm/System/RWMutex.h"
+#include "llvm/Assembly/Writer.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/DenseMap.h"
@@ -34,7 +38,7 @@ class ConstantInt;
 class ConstantFP;
 class MDString;
 class MDNode;
-struct LLVMContext;
+class LLVMContext;
 class Type;
 class Value;
 
@@ -90,9 +94,9 @@ struct DenseMapAPFloatKeyInfo {
   static bool isPod() { return false; }
 };
 
-struct LLVMContextImpl {
+class LLVMContextImpl {
+public:
   sys::SmartRWMutex<true> ConstantsLock;
-  
   typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*, 
                          DenseMapAPIntKeyInfo> IntMapTy;
   IntMapTy IntConstants;
@@ -106,7 +110,7 @@ struct LLVMContextImpl {
   FoldingSet<MDNode> MDNodeSet;
   
   ValueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
-  
+
   typedef ValueMap<std::vector<Constant*>, ArrayType, 
     ConstantArray, true /*largekey*/> ArrayConstantsTy;
   ArrayConstantsTy ArrayConstants;
@@ -128,13 +132,92 @@ struct LLVMContextImpl {
   ConstantInt *TheTrueVal;
   ConstantInt *TheFalseVal;
   
+  // Lock used for guarding access to the leak detector
+  sys::SmartMutex<true> LLVMObjectsLock;
+  LeakDetectorImpl<Value> LLVMObjects;
+  
+  // Lock used for guarding access to the type maps.
+  sys::SmartMutex<true> TypeMapLock;
+  
+  // Recursive lock used for guarding access to AbstractTypeUsers.
+  // NOTE: The true template parameter means this will no-op when we're not in
+  // multithreaded mode.
+  sys::SmartMutex<true> AbstractTypeUsersLock;
+
+  // Basic type instances.
+  const Type VoidTy;
+  const Type LabelTy;
+  const Type FloatTy;
+  const Type DoubleTy;
+  const Type MetadataTy;
+  const Type X86_FP80Ty;
+  const Type FP128Ty;
+  const Type PPC_FP128Ty;
+  const IntegerType Int1Ty;
+  const IntegerType Int8Ty;
+  const IntegerType Int16Ty;
+  const IntegerType Int32Ty;
+  const IntegerType Int64Ty;
+
+  // Concrete/Abstract TypeDescriptions - We lazily calculate type descriptions
+  // for types as they are needed.  Because resolution of types must invalidate
+  // all of the abstract type descriptions, we keep them in a seperate map to 
+  // make this easy.
+  TypePrinting ConcreteTypeDescriptions;
+  TypePrinting AbstractTypeDescriptions;
+  
   TypeMap<ArrayValType, ArrayType> ArrayTypes;
   TypeMap<VectorValType, VectorType> VectorTypes;
   TypeMap<PointerValType, PointerType> PointerTypes;
   TypeMap<FunctionValType, FunctionType> FunctionTypes;
   TypeMap<StructValType, StructType> StructTypes;
+  TypeMap<IntegerValType, IntegerType> IntegerTypes;
+
+  /// ValueHandles - This map keeps track of all of the value handles that are
+  /// watching a Value*.  The Value::HasValueHandle bit is used to know
+  // whether or not a value has an entry in this map.
+  typedef DenseMap<Value*, ValueHandleBase*> ValueHandlesTy;
+  ValueHandlesTy ValueHandles;
   
-  LLVMContextImpl() : TheTrueVal(0), TheFalseVal(0) { }
+  MetadataContext TheMetadata;
+  LLVMContextImpl(LLVMContext &C) : TheTrueVal(0), TheFalseVal(0),
+    VoidTy(C, Type::VoidTyID),
+    LabelTy(C, Type::LabelTyID),
+    FloatTy(C, Type::FloatTyID),
+    DoubleTy(C, Type::DoubleTyID),
+    MetadataTy(C, Type::MetadataTyID),
+    X86_FP80Ty(C, Type::X86_FP80TyID),
+    FP128Ty(C, Type::FP128TyID),
+    PPC_FP128Ty(C, Type::PPC_FP128TyID),
+    Int1Ty(C, 1),
+    Int8Ty(C, 8),
+    Int16Ty(C, 16),
+    Int32Ty(C, 32),
+    Int64Ty(C, 64) { }
+
+  ~LLVMContextImpl()
+  {
+    ExprConstants.freeConstants();
+    ArrayConstants.freeConstants();
+    StructConstants.freeConstants();
+    VectorConstants.freeConstants();
+    AggZeroConstants.freeConstants();
+    NullPtrConstants.freeConstants();
+    UndefValueConstants.freeConstants();
+    for (FoldingSet<MDNode>::iterator I = MDNodeSet.begin(), 
+           E = MDNodeSet.end(); I != E; ++I)
+      I->dropAllReferences();
+    for (IntMapTy::iterator I = IntConstants.begin(), E = IntConstants.end(); 
+         I != E; ++I) {
+      if (I->second->use_empty())
+        delete I->second;
+    }
+    for (FPMapTy::iterator I = FPConstants.begin(), E = FPConstants.end(); 
+         I != E; ++I) {
+      if (I->second->use_empty())
+        delete I->second;
+    }
+  }
 };
 
 }