X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FSupport%2FAllocator.h;h=275086bffdfd6e5f43727a73b5192faac2eec6f3;hb=0644c7a8aba4defca316c6dfa3485a79fe71e2b6;hp=f3c53d14e5acf15c351782e5c556aa655135ddf9;hpb=16c3b647eb100fe404ee65f106d563ddef6c74b7;p=oota-llvm.git

diff --git a/include/llvm/Support/Allocator.h b/include/llvm/Support/Allocator.h
index f3c53d14e5a..275086bffdf 100644
--- a/include/llvm/Support/Allocator.h
+++ b/include/llvm/Support/Allocator.h
@@ -14,15 +14,19 @@
 #ifndef LLVM_SUPPORT_ALLOCATOR_H
 #define LLVM_SUPPORT_ALLOCATOR_H
 
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/StringRef.h"
 #include "llvm/Support/AlignOf.h"
+#include "llvm/Support/DataTypes.h"
 #include "llvm/Support/MathExtras.h"
-#include "llvm/System/DataTypes.h"
 #include <algorithm>
 #include <cassert>
-#include <cstdlib>
 #include <cstddef>
+#include <cstdlib>
 
 namespace llvm {
+template <typename T> struct ReferenceAdder { typedef T& result; };
+template <typename T> struct ReferenceAdder<T&> { typedef T result; };
 
 class MallocAllocator {
 public:
@@ -77,8 +81,8 @@ class MallocSlabAllocator : public SlabAllocator {
 public:
   MallocSlabAllocator() : Allocator() { }
   virtual ~MallocSlabAllocator();
-  virtual MemSlab *Allocate(size_t Size);
-  virtual void Deallocate(MemSlab *Slab);
+  virtual MemSlab *Allocate(size_t Size) LLVM_OVERRIDE;
+  virtual void Deallocate(MemSlab *Slab) LLVM_OVERRIDE;
 };
 
 /// BumpPtrAllocator - This allocator is useful for containers that need
@@ -86,8 +90,8 @@ public:
 /// allocating memory, and never deletes it until the entire block is dead. This
 /// makes allocation speedy, but must only be used when the trade-off is ok.
 class BumpPtrAllocator {
-  BumpPtrAllocator(const BumpPtrAllocator &); // do not implement
-  void operator=(const BumpPtrAllocator &);   // do not implement
+  BumpPtrAllocator(const BumpPtrAllocator &) LLVM_DELETED_FUNCTION;
+  void operator=(const BumpPtrAllocator &) LLVM_DELETED_FUNCTION;
 
   /// SlabSize - Allocate data into slabs of this size unless we get an
   /// allocation above SizeThreshold.
@@ -97,6 +101,9 @@ class BumpPtrAllocator {
   /// allocate a separate slab.
   size_t SizeThreshold;
 
+  /// \brief the default allocator used if one is not provided
+  MallocSlabAllocator DefaultSlabAllocator;
+
   /// Allocator - The underlying allocator we use to get slabs of memory.  This
   /// defaults to MallocSlabAllocator, which wraps malloc, but it could be
   /// changed to use a custom allocator.
@@ -131,12 +138,10 @@ class BumpPtrAllocator {
   /// one.
   void DeallocateSlabs(MemSlab *Slab);
 
-  static MallocSlabAllocator DefaultSlabAllocator;
-
   template<typename T> friend class SpecificBumpPtrAllocator;
 public:
-  BumpPtrAllocator(size_t size = 4096, size_t threshold = 4096,
-                   SlabAllocator &allocator = DefaultSlabAllocator);
+  BumpPtrAllocator(size_t size = 4096, size_t threshold = 4096);
+  BumpPtrAllocator(size_t size, size_t threshold, SlabAllocator &allocator);
   ~BumpPtrAllocator();
 
   /// Reset - Deallocate all but the current slab and reset the current pointer
@@ -175,6 +180,43 @@ public:
   unsigned GetNumSlabs() const;
 
   void PrintStats() const;
+  
+  
+  /// Allocate space and copy content into it.
+  void *allocateCopy(const void *Src, size_t Size, size_t Alignment=1) {
+    void *P = Allocate(Size, Alignment);
+    memcpy(P, Src, Size);
+    return P;
+  }
+  
+  /// Allocate space for an array of type T, and use std::copy()
+  /// to copy the array contents.
+  template <typename T>
+  typename enable_if<isPodLike<T>, T*>::type
+  allocateCopy(const T Src[], size_t Num) {
+    T *P = Allocate<T>(Num);
+    std::copy(Src, &Src[Num], P);
+    return P;
+  }
+
+  /// Copy a StringRef by allocating copy in BumpPtrAllocator.
+  StringRef allocateCopy(StringRef Str) {
+    size_t Length = Str.size();
+    char *P = allocateCopy<char>(Str.data(), Length);
+    return StringRef(P, Length);
+  }
+
+  /// Copy a ArrayRef<T> by allocating copy in BumpPtrAllocator.
+  template <typename T>
+  typename enable_if<isPodLike<T>, ArrayRef<T> >::type
+  allocateCopy(ArrayRef<T> Src) {
+    size_t Length = Src.size();
+    T *P = allocateCopy<T>(Src.data(), Length);
+    return makeArrayRef(P, Length);
+  }
+
+  /// Compute the total physical memory allocated by this allocator.
+  size_t getTotalMemory() const;
 };
 
 /// SpecificBumpPtrAllocator - Same as BumpPtrAllocator but allows only
@@ -184,8 +226,10 @@ template <typename T>
 class SpecificBumpPtrAllocator {
   BumpPtrAllocator Allocator;
 public:
-  SpecificBumpPtrAllocator(size_t size = 4096, size_t threshold = 4096,
-              SlabAllocator &allocator = BumpPtrAllocator::DefaultSlabAllocator)
+  SpecificBumpPtrAllocator(size_t size = 4096, size_t threshold = 4096)
+    : Allocator(size, threshold) {}
+  SpecificBumpPtrAllocator(size_t size, size_t threshold,
+                           SlabAllocator &allocator)
     : Allocator(size, threshold, allocator) {}
 
   ~SpecificBumpPtrAllocator() {