Line data    Source code

       1             : // Copyright 2012 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #ifndef V8_HEAP_INCREMENTAL_MARKING_JOB_H_
       6             : #define V8_HEAP_INCREMENTAL_MARKING_JOB_H_
       7             : 
       8             : #include "src/cancelable-task.h"
       9             : 
      10             : namespace v8 {
      11             : namespace internal {
      12             : 
      13             : class Heap;
      14             : class Isolate;
      15             : 
      16             : // The incremental marking job uses platform tasks to perform incremental
      17             : // marking steps. The job posts a foreground task that makes a small (~1ms)
      18             : // step and posts another task until the marking is completed.
      19             : class IncrementalMarkingJob {
      20             :  public:
      21       12202 :   class Task : public CancelableTask {
      22             :    public:
      23             :     explicit Task(Isolate* isolate, IncrementalMarkingJob* job)
      24        6107 :         : CancelableTask(isolate), job_(job) {}
      25             :     static void Step(Heap* heap);
      26             :     // CancelableTask overrides.
      27             :     void RunInternal() override;
      28             : 
      29             :    private:
      30             :     IncrementalMarkingJob* job_;
      31             :   };
      32             : 
      33       60782 :   IncrementalMarkingJob() : task_pending_(false) {}
      34             : 
      35             :   bool TaskPending() { return task_pending_; }
      36             : 
      37             :   void Start(Heap* heap);
      38             : 
      39             :   void NotifyTask();
      40             : 
      41             :   void ScheduleTask(Heap* heap);
      42             : 
      43             :  private:
      44             :   bool task_pending_;
      45             : };
      46             : }  // namespace internal
      47             : }  // namespace v8
      48             : 
      49             : #endif  // V8_HEAP_INCREMENTAL_MARKING_JOB_H_