- Reduced the maximum capacity of a semi space from 8MB to 4MB....

src/spaces.h

Index: src/spaces.h
===================================================================
--- src/spaces.h	(revision 2666)
+++ src/spaces.h	(working copy)
@@ -997,11 +997,11 @@
   // True if the space has been set up but not torn down.
   bool HasBeenSetup() { return start_ != NULL; }
 
-  // Double the size of the semispace by committing extra virtual memory.
+  // Grow the size of the semispace by committing extra virtual memory.
   // Assumes that the caller has checked that the semispace has not reached
   // its maximum capacity (and thus there is space available in the reserved
   // address range to grow).
-  bool Double();
+  bool Grow();
 
   // Returns the start address of the space.
   Address low() { return start_; }
@@ -1040,6 +1040,9 @@
   virtual void Verify();
 #endif
 
+  // Returns the current capacity of the semi space.
+  int Capacity() { return capacity_; }
+
  private:
   // The current and maximum capacity of the space.
   int capacity_;
@@ -1131,9 +1134,9 @@
   // Flip the pair of spaces.
   void Flip();
 
-  // Doubles the capacity of the semispaces.  Assumes that they are not at
+  // Grow the capacity of the semispaces.  Assumes that they are not at
   // their maximum capacity.  Returns a flag indicating success or failure.
-  bool Double();
+  bool Grow();
 
   // True if the address or object lies in the address range of either
   // semispace (not necessarily below the allocation pointer).