Restart idle round on context disposal.

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

 // 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.
 
 #include "src/heap/gc-idle-time-handler.h"
 #include "src/heap/gc-tracer.h"
 #include "src/utils.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 142 matching lines @@
 bool GCIdleTimeHandler::ShouldDoMarkCompact(
     size_t idle_time_in_ms, size_t size_of_objects,
     size_t mark_compact_speed_in_bytes_per_ms) {
   return idle_time_in_ms >=
          EstimateMarkCompactTime(size_of_objects,
                                  mark_compact_speed_in_bytes_per_ms);
 }
 
 
 bool GCIdleTimeHandler::ShouldDoContextDisposalMarkCompact(
-    bool context_disposed, double contexts_disposal_rate) {
-  return context_disposed && contexts_disposal_rate > 0 &&
+    int contexts_disposed, double contexts_disposal_rate) {
+  return contexts_disposed > 0 && contexts_disposal_rate > 0 &&
          contexts_disposal_rate < kHighContextDisposalRate;
 }
 
 
 bool GCIdleTimeHandler::ShouldDoFinalIncrementalMarkCompact(
     size_t idle_time_in_ms, size_t size_of_objects,
     size_t final_incremental_mark_compact_speed_in_bytes_per_ms) {
   return idle_time_in_ms >=
          EstimateFinalIncrementalMarkCompactTime(
              size_of_objects,
@@ skipping 14 matching lines @@
 // if  we are allowed to still do full garbage collections during this idle
 // round or if we are not allowed to start incremental marking. Otherwise we
 // do not perform garbage collection to keep system utilization low.
 // (5) If sweeping is in progress and we received a large enough idle time
 // request, we finalize sweeping here.
 // (6) If incremental marking is in progress, we perform a marking step. Note,
 // that this currently may trigger a full garbage collection.
 GCIdleTimeAction GCIdleTimeHandler::Compute(double idle_time_in_ms,
                                             HeapState heap_state) {
   if (static_cast<int>(idle_time_in_ms) <= 0) {
+    if (heap_state.contexts_disposed > 0) {
+      StartIdleRound();
+    }
     if (heap_state.incremental_marking_stopped) {
       if (ShouldDoContextDisposalMarkCompact(
               heap_state.contexts_disposed,
               heap_state.contexts_disposal_rate)) {
         return GCIdleTimeAction::FullGC();
       }
     }
     return GCIdleTimeAction::Nothing();
   }
 
@@ skipping 44 matching lines @@
       !heap_state.can_start_incremental_marking) {
     return GCIdleTimeAction::Nothing();
   }
   size_t step_size = EstimateMarkingStepSize(
       static_cast<size_t>(kIncrementalMarkingStepTimeInMs),
       heap_state.incremental_marking_speed_in_bytes_per_ms);
   return GCIdleTimeAction::IncrementalMarking(step_size);
 }
 }
 }