On store buffer overflow we mark individidual pages for...

src/incremental-marking.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 32 matching lines @@
     STOPPED,
     MARKING,
     COMPLETE
   };
 
   static State state() {
     ASSERT(state_ == STOPPED || FLAG_incremental_marking);
     return state_;
   }
 
+  static bool should_hurry() { return should_hurry_; }
+  static void set_should_hurry(bool val) { should_hurry_ = val; }
+
   static inline bool IsStopped() { return state() == STOPPED; }
 
   static bool WorthActivating();
 
   static void Start();
 
   static void Stop();
 
   static void PrepareForScavenge();
 
@@ skipping 156 matching lines @@
     steps_count_ = 0;
     steps_took_ = 0;
   }
 
 
   static State state_;
   static MarkingStack marking_stack_;
 
   static int steps_count_;
   static double steps_took_;
-
+  static bool should_hurry_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_INCREMENTAL_MARKING_H_