Index: content/renderer/input/main_thread_event_queue_task_list.h |
diff --git a/content/renderer/input/main_thread_event_queue_task_list.h b/content/renderer/input/main_thread_event_queue_task_list.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..9d46a61007e2438c4fd64a9023eb1852d42f18d1 |
--- /dev/null |
+++ b/content/renderer/input/main_thread_event_queue_task_list.h |
@@ -0,0 +1,54 @@ |
+// Copyright 2017 The Chromium 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 CONTENT_RENDERER_INPUT_MAIN_THREAD_EVENT_QUEUE_TASK_LIST_H_ |
+#define CONTENT_RENDERER_INPUT_MAIN_THREAD_EVENT_QUEUE_TASK_LIST_H_ |
+ |
+#include <deque> |
+#include <memory> |
+ |
+#include "content/renderer/input/main_thread_event_queue_task.h" |
+ |
+namespace content { |
+ |
+// The list of tasks that the main thread event queue will execute. |
+// This class supports coalescing upon queueing a task. |
+class MainThreadEventQueueTaskList { |
+ public: |
+ MainThreadEventQueueTaskList(); |
+ ~MainThreadEventQueueTaskList(); |
+ |
+ // Adds an event to the queue. The event may be coalesced with previously |
+ // queued events. |
+ void Queue(std::unique_ptr<MainThreadEventQueueTask> event); |
+ std::unique_ptr<MainThreadEventQueueTask> Pop(); |
+ |
+ const std::unique_ptr<MainThreadEventQueueTask>& front() const { |
+ return queue_.front(); |
+ } |
+ const std::unique_ptr<MainThreadEventQueueTask>& at(size_t pos) const { |
+ return queue_.at(pos); |
+ } |
+ |
+ void emplace_front(std::unique_ptr<MainThreadEventQueueTask> event) { |
+ queue_.emplace_front(std::move(event)); |
+ } |
+ void swap(std::deque<std::unique_ptr<MainThreadEventQueueTask>>* queue) { |
+ queue_.swap(*queue); |
+ } |
+ |
+ bool empty() const { return queue_.empty(); } |
+ |
+ size_t size() const { return queue_.size(); } |
+ |
+ private: |
+ typedef std::deque<std::unique_ptr<MainThreadEventQueueTask>> EventQueue; |
+ EventQueue queue_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(MainThreadEventQueueTaskList); |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_RENDERER_INPUT_MAIN_THREAD_EVENT_QUEUE_TASK_LIST_H_ |