Get rid of distinction between below- and above-watermark in page allocation....

src/objects.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 715 matching lines @@
   STRUCT_LIST(DECLARE_STRUCT_PREDICATE)
 #undef DECLARE_STRUCT_PREDICATE
 
   // Oddball testing.
   INLINE(bool IsUndefined());
   INLINE(bool IsNull());
   INLINE(bool IsTrue());
   INLINE(bool IsFalse());
   inline bool IsArgumentsMarker();
 
+  // Filler objects (fillers and byte arrays).
+  inline bool IsFiller();
+
   // Extract the number.
   inline double Number();
 
   inline bool HasSpecificClassOf(String* name);
 
   MUST_USE_RESULT MaybeObject* ToObject();             // ECMA-262 9.9.
   Object* ToBoolean();                                 // ECMA-262 9.2.
 
   // Convert to a JSObject if needed.
   // global_context is used when creating wrapper object.
@@ skipping 1838 matching lines @@
 
 // ByteArray represents fixed sized byte arrays.  Used by the outside world,
 // such as PCRE, and also by the memory allocator and garbage collector to
 // fill in free blocks in the heap.
 class ByteArray: public HeapObject {
  public:
   // [length]: length of the array.
   inline int length();
   inline void set_length(int value);
 
+  inline int Size() { return RoundUp(length() + kHeaderSize, kPointerSize); }

[Vyacheslav Egorov (Chromium), 2011/03/15 09:20:09]

What's the difference from ByteArraySize()?

[Erik Corry, 2011/03/17 13:39:17]

None, but you have to have this one because it overrides a method in the
superclass.  I removed FreeSpaceSize()

+
   // Setter and getter.
   inline byte get(int index);
   inline void set(int index, byte value);
 
   // Treat contents as an int array.
   inline int get_int(int index);
 
   static int SizeFor(int length) {
     return OBJECT_POINTER_ALIGN(kHeaderSize + length);
   }
@@ skipping 3850 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_