GC branch: Some changes to make V8 work with different page sizes.

src/heap.h

 // Copyright 2011 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 1320 matching lines @@
     scavenging_visitors_table_.GetVisitor(map)(map, slot, obj);
   }
 
  private:
   Heap();
 
   // This can be calculated directly from a pointer to the heap; however, it is
   // more expedient to get at the isolate directly from within Heap methods.
   Isolate* isolate_;
 
+  intptr_t code_range_size_;
   int reserved_semispace_size_;
   int max_semispace_size_;
   int initial_semispace_size_;
   intptr_t max_old_generation_size_;
   intptr_t max_executable_size_;
-  intptr_t code_range_size_;
 
   // For keeping track of how much data has survived
   // scavenge since last new space expansion.
   int survived_since_last_expansion_;
 
   int always_allocate_scope_depth_;
   int linear_allocation_scope_depth_;
 
   // For keeping track of context disposals.
   int contexts_disposed_;
@@ skipping 144 matching lines @@
 
   // Checks whether a global GC is necessary
   GarbageCollector SelectGarbageCollector(AllocationSpace space);
 
   // Performs garbage collection
   // Returns whether there is a chance another major GC could
   // collect more garbage.
   bool PerformGarbageCollection(GarbageCollector collector,
                                 GCTracer* tracer);
 
-  static const intptr_t kMinimumPromotionLimit = 2 * MB;
-  static const intptr_t kMinimumAllocationLimit = 8 * MB;
 
   inline void UpdateOldSpaceLimits();
 
 
   // Allocate an uninitialized object in map space.  The behavior is identical
   // to Heap::AllocateRaw(size_in_bytes, MAP_SPACE), except that (a) it doesn't
   // have to test the allocation space argument and (b) can reduce code size
   // (since both AllocateRaw and AllocateRawMap are inlined).
   MUST_USE_RESULT inline MaybeObject* AllocateRawMap();
 
@@ skipping 833 matching lines @@
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG || LIVE_OBJECT_LIST
 
 } }  // namespace v8::internal
 
 #undef HEAP
 
 #endif  // V8_HEAP_H_