Grow heap slowly after running memory reducer.

src/heap/memory-reducer.cc

 // Copyright 2015 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.
 
 #include "src/heap/memory-reducer.h"
 
 #include "src/flags.h"
 #include "src/heap/heap.h"
 #include "src/utils.h"
 #include "src/v8.h"
@@ skipping 117 matching lines @@
         return State(
             kWait, 0, event.time_ms + kLongDelayMs,
             event.type == kMarkCompact ? event.time_ms : state.last_gc_time_ms);
       }
     case kWait:
       switch (event.type) {
         case kContextDisposed:
           return state;
         case kTimer:
           if (state.started_gcs >= kMaxNumberOfGCs) {
-            return State(kDone, 0, 0.0, state.last_gc_time_ms);
+            return State(kDone, kMaxNumberOfGCs, 0.0, state.last_gc_time_ms);
           } else if (event.can_start_incremental_gc &&
                      (event.low_allocation_rate || WatchdogGC(state, event))) {
             if (state.next_gc_start_ms <= event.time_ms) {
               return State(kRun, state.started_gcs + 1, 0.0,
                            state.last_gc_time_ms);
             } else {
               return state;
             }
           } else {
             return State(kWait, state.started_gcs, event.time_ms + kLongDelayMs,
@@ skipping 13 matching lines @@
       }
     case kRun:
       if (event.type != kMarkCompact) {
         return state;
       } else {
         if (state.started_gcs < kMaxNumberOfGCs &&
             (event.next_gc_likely_to_collect_more || state.started_gcs == 1)) {
           return State(kWait, state.started_gcs, event.time_ms + kShortDelayMs,
                        event.time_ms);
         } else {
-          return State(kDone, 0, 0.0, event.time_ms);
+          return State(kDone, kMaxNumberOfGCs, 0.0, event.time_ms);
         }
       }
   }
   UNREACHABLE();
   return State(kDone, 0, 0, 0.0);  // Make the compiler happy.
 }
 
 
 void MemoryReducer::ScheduleTimer(double delay_ms) {
   DCHECK(delay_ms > 0);
   // Leave some room for precision error in task scheduler.
   const double kSlackMs = 100;
   v8::Isolate* isolate = reinterpret_cast<v8::Isolate*>(heap()->isolate());
   auto timer_task = new MemoryReducer::TimerTask(this);
   V8::GetCurrentPlatform()->CallDelayedOnForegroundThread(
       isolate, timer_task, (delay_ms + kSlackMs) / 1000.0);
 }
 
 
 void MemoryReducer::TearDown() { state_ = State(kDone, 0, 0, 0.0); }
 
 }  // internal
 }  // v8