Make new space allocation throughput estimation more accurate.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 58be0a23f3eba311852d616b4fcee8ae4c74f8ad..fa82cb0ff2b5848ab15a8d3bc76648f4c72d01c2 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -1298,6 +1298,19 @@ class Heap {
     }
   }
 
+  void UpdateNewSpaceAllocationCounter() {
+    new_space_allocation_counter_ = NewSpaceAllocationCounter();
+  }
+
+  size_t NewSpaceAllocationCounter() {
+    return new_space_allocation_counter_ + new_space()->AllocatedSinceLastGC();
+  }
+
+  // This should be used only for testing.
+  void set_new_space_allocation_counter(size_t new_value) {
+    new_space_allocation_counter_ = new_value;
+  }
+
   // Update GC statistics that are tracked on the Heap.
   void UpdateCumulativeGCStatistics(double duration, double spent_in_mutator,
                                     double marking_time);
@@ -2154,6 +2167,10 @@ class Heap {
   // These two counters are monotomically increasing and never reset.
   size_t full_codegen_bytes_generated_;
   size_t crankshaft_codegen_bytes_generated_;

[Hannes Payer (out of office), 2015/05/12 17:04:17]

newline

[ulan, 2015/05/18 12:45:51]

Done.

+  // This counter is increased before each GC and never reset.
+  // To account for the bytes allocated since the last GC, use the
+  // NewSpaceAllocationCounter() function.
+  size_t new_space_allocation_counter_;
 
   // If the --deopt_every_n_garbage_collections flag is set to a positive value,
   // this variable holds the number of garbage collections since the last