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

src/objects-inl.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 315 matching lines @@
   return IsSmi() || IsHeapNumber();
 }
 
 
 bool Object::IsByteArray() {
   return Object::IsHeapObject()
     && HeapObject::cast(this)->map()->instance_type() == BYTE_ARRAY_TYPE;
 }
 
 
+bool Object::IsFiller() {
+  if (!Object::IsHeapObject()) return false;
+  InstanceType instance_type = HeapObject::cast(this)->map()->instance_type();
+  return instance_type == BYTE_ARRAY_TYPE || instance_type == FILLER_TYPE;

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

maybe it is really time to make filler_array_type or whatever.

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

It seems most places we do care whether it is FILLER_TYPE (1 or 2 words) or
FREE_SPACE_TYPE (the replacement for BYTE_ARRAY_TYPE for larger areas).

+}
+
+
 bool Object::IsPixelArray() {
   return Object::IsHeapObject() &&
       HeapObject::cast(this)->map()->instance_type() == PIXEL_ARRAY_TYPE;
 }
 
 
 bool Object::IsExternalArray() {
   if (!Object::IsHeapObject())
     return false;
   InstanceType instance_type =
@@ skipping 3452 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_