First tests for GCIdleTimeHandler.

src/heap/gc-idle-time-handler.h

 // Copyright 2014 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_GC_IDLE_TIME_HANDLER_H_
 #define V8_HEAP_GC_IDLE_TIME_HANDLER_H_
 
 #include "src/globals.h"
 
 namespace v8 {
@@ skipping 71 matching lines @@
   // conservative lower bound for the mark-compact speed.
   static const size_t kInitialConservativeMarkCompactSpeed = 2 * MB;
 
   // Maximum mark-compact time returned by EstimateMarkCompactTime.
   static const size_t kMaxMarkCompactTimeInMs;
 
   // Minimum time to finalize sweeping phase. The main thread may wait for
   // sweeper threads.
   static const size_t kMinTimeForFinalizeSweeping;
 
+  // Number of idle mark-compact events, after which idle handler will finish
+  // idle round.
+  static const int kMaxMarkCompactsInIdleRound;
+
+  // Number of scavenges that will trigger start of new idle round.
+  static const int kIdleScavengeThreshold;
+
   struct HeapState {
     int contexts_disposed;
     size_t size_of_objects;
     bool incremental_marking_stopped;
     bool can_start_incremental_marking;
     bool sweeping_in_progress;
     size_t mark_compact_speed_in_bytes_per_ms;
     size_t incremental_marking_speed_in_bytes_per_ms;
   };
 
@@ skipping 24 matching lines @@
  private:
   void StartIdleRound() { mark_compacts_since_idle_round_started_ = 0; }
   bool IsIdleRoundFinished() {
     return mark_compacts_since_idle_round_started_ ==
            kMaxMarkCompactsInIdleRound;
   }
   bool EnoughGarbageSinceLastIdleRound() {
     return scavenges_since_last_idle_round_ >= kIdleScavengeThreshold;
   }
 
-  static const int kMaxMarkCompactsInIdleRound = 7;
-  static const int kIdleScavengeThreshold = 5;
   int mark_compacts_since_idle_round_started_;
   int scavenges_since_last_idle_round_;
 
   DISALLOW_COPY_AND_ASSIGN(GCIdleTimeHandler);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_GC_IDLE_TIME_HANDLER_H_