Line data    Source code

       1             : // Copyright 2012 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #ifndef V8_ALLOCATION_H_
       6             : #define V8_ALLOCATION_H_
       7             : 
       8             : #include "src/base/compiler-specific.h"
       9             : #include "src/globals.h"
      10             : 
      11             : namespace v8 {
      12             : namespace internal {
      13             : 
      14             : // Called when allocation routines fail to allocate.
      15             : // This function should not return, but should terminate the current
      16             : // processing.
      17             : V8_EXPORT_PRIVATE void FatalProcessOutOfMemory(const char* message);
      18             : 
      19             : // Superclass for classes managed with new & delete.
      20             : class V8_EXPORT_PRIVATE Malloced {
      21             :  public:
      22     1530597 :   void* operator new(size_t size) { return New(size); }
      23     1524779 :   void  operator delete(void* p) { Delete(p); }
      24             : 
      25             :   static void* New(size_t size);
      26             :   static void Delete(void* p);
      27             : };
      28             : 
      29             : // DEPRECATED
      30             : // TODO(leszeks): Delete this during a quiet period
      31             : #define BASE_EMBEDDED
      32             : 
      33             : 
      34             : // Superclass for classes only using static method functions.
      35             : // The subclass of AllStatic cannot be instantiated at all.
      36             : class AllStatic {
      37             : #ifdef DEBUG
      38             :  public:
      39             :   AllStatic() = delete;
      40             : #endif
      41             : };
      42             : 
      43             : 
      44             : template <typename T>
      45   152145701 : T* NewArray(size_t size) {
      46   256352538 :   T* result = new T[size];
      47   152145732 :   if (result == NULL) FatalProcessOutOfMemory("NewArray");
      48   152145732 :   return result;
      49             : }
      50             : 
      51             : 
      52             : template <typename T>
      53        1764 : void DeleteArray(T* array) {
      54    67854176 :   delete[] array;
      55        1764 : }
      56             : 
      57             : 
      58             : // The normal strdup functions use malloc.  These versions of StrDup
      59             : // and StrNDup uses new and calls the FatalProcessOutOfMemory handler
      60             : // if allocation fails.
      61             : V8_EXPORT_PRIVATE char* StrDup(const char* str);
      62             : char* StrNDup(const char* str, int n);
      63             : 
      64             : 
      65             : // Allocation policy for allocating in the C free store using malloc
      66             : // and free. Used as the default policy for lists.
      67             : class FreeStoreAllocationPolicy {
      68             :  public:
      69   106533042 :   INLINE(void* New(size_t size)) { return Malloced::New(size); }
      70   140238733 :   INLINE(static void Delete(void* p)) { Malloced::Delete(p); }
      71             : };
      72             : 
      73             : 
      74             : void* AlignedAlloc(size_t size, size_t alignment);
      75             : void AlignedFree(void *ptr);
      76             : 
      77             : }  // namespace internal
      78             : }  // namespace v8
      79             : 
      80             : #endif  // V8_ALLOCATION_H_