Index: base/task_scheduler/task_scheduler.h |
diff --git a/base/task_scheduler/task_scheduler.h b/base/task_scheduler/task_scheduler.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e6c0dc1023cb6bc39f338297852f88de4b85784b |
--- /dev/null |
+++ b/base/task_scheduler/task_scheduler.h |
@@ -0,0 +1,62 @@ |
+// Copyright 2016 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 BASE_TASK_SCHEDULER_TASK_SCHEDULER_H_ |
+#define BASE_TASK_SCHEDULER_TASK_SCHEDULER_H_ |
+ |
+#include "base/base_export.h" |
+#include "base/callback_forward.h" |
+#include "base/macros.h" |
+#include "base/memory/ref_counted.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "base/task_runner.h" |
+#include "base/task_scheduler/task_traits.h" |
+ |
+namespace tracked_objects { |
+class Location; |
+} |
+ |
+namespace base { |
+ |
+class BASE_EXPORT TaskScheduler { |
+ public: |
+ // Posts |task| with specific |traits|. |
+ // For one off tasks that don't require a TaskRunner. |
+ virtual void PostTaskWithTraits(const tracked_objects::Location& from_here, |
+ TaskTraits traits, |
+ const Closure& task) = 0; |
+ |
+ // Returns a TaskRunner whose PostTask invocations will result in scheduling |
+ // tasks using |traits| which will be executed according to |execution_mode|. |
+ virtual scoped_refptr<TaskRunner> CreateTaskRunnerWithTraits( |
+ TaskTraits traits, |
+ ExecutionMode execution_mode) = 0; |
+ |
+ // Performs a synchronous cleanup of threads and state in the TaskScheduler. |
+ virtual void Shutdown() = 0; |
+ |
+ // Registers |task_scheduler| to handle tasks posted through the post_task.h |
+ // API for this process. Must be called on the main thread before creating any |
+ // other threads. Replacing an existing TaskScheduler is not supported (this |
+ // may not be called after InitializeDefaultTaskScheduler() or SetInstance() |
+ // was already called in this process). |
+ static void SetInstance(scoped_ptr<TaskScheduler> task_scheduler); |
+ |
+ // Retrieve the TaskScheduler set via SetInstance(). This should be used very |
+ // rarely; most users of TaskScheduler should use the post_task.h API. |
+ static TaskScheduler* GetInstance(); |
+ |
+ // Initializes the default task scheduler for this process. Must be called on |
+ // the main thread before creating any other threads. Replacing an existing |
+ // TaskScheduler is not supported (this may not be called after |
+ // InitializeDefaultTaskScheduler() or SetInstance() was already called in |
+ // this process). |
+ static void InitializeDefaultTaskScheduler(); |
+ |
+ virtual ~TaskScheduler() = default; |
+}; |
+ |
+} // namespace base |
+ |
+#endif // BASE_TASK_SCHEDULER_TASK_SCHEDULER_H_ |