// 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_INCREMENTAL_MARKING_JOB_H_ #define V8_HEAP_INCREMENTAL_MARKING_JOB_H_ #include "src/tasks/cancelable-task.h" namespace v8 { namespace internal { class Heap; class Isolate; // The incremental marking job uses platform tasks to perform incremental // marking steps. The job posts a foreground task that makes a small (~1ms) // step and posts another task until the marking is completed. class IncrementalMarkingJob { public: enum class TaskType { kNormal, kDelayed }; IncrementalMarkingJob() V8_NOEXCEPT = default; void Start(Heap* heap); void ScheduleTask(Heap* heap, TaskType task_type = TaskType::kNormal); private: class Task; static constexpr double kDelayInSeconds = 10.0 / 1000.0; bool IsTaskPending(TaskType task_type) { return task_type == TaskType::kNormal ? normal_task_pending_ : delayed_task_pending_; } void SetTaskPending(TaskType task_type, bool value) { if (task_type == TaskType::kNormal) { normal_task_pending_ = value; } else { delayed_task_pending_ = value; } } bool normal_task_pending_ = false; bool delayed_task_pending_ = false; }; } // namespace internal } // namespace v8 #endif // V8_HEAP_INCREMENTAL_MARKING_JOB_H_