Make new space allocation throughput estimation more accurate.

src/heap/heap.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 1280 matching lines @@
   }
 
   void IncrementCodeGeneratedBytes(bool is_crankshafted, int size) {
     if (is_crankshafted) {
       crankshaft_codegen_bytes_generated_ += size;
     } else {
       full_codegen_bytes_generated_ += size;
     }
   }
 
+  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);
 
   // Returns maximum GC pause.
   double get_max_gc_pause() { return max_gc_pause_; }
 
   // Returns maximum size of objects alive after GC.
   intptr_t get_max_alive_after_gc() { return max_alive_after_gc_; }
 
@@ skipping 835 matching lines @@
   Marking marking_;
 
   IncrementalMarking incremental_marking_;
 
   GCIdleTimeHandler gc_idle_time_handler_;
 
   unsigned int gc_count_at_last_idle_gc_;
 
   // 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
   // deoptimization triggered by garbage collection.
   int gcs_since_last_deopt_;
 
   static const int kAllocationSiteScratchpadSize = 256;
   int allocation_sites_scratchpad_length_;
 
   static const int kMaxMarkCompactsInIdleRound = 7;
@@ skipping 480 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_