| // Copyright 2018 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 THIRD_PARTY_BLINK_PUBLIC_PLATFORM_SCHEDULER_WEB_RESOURCE_LOADING_TASK_RUNNER_HANDLE_H_ |
| #define THIRD_PARTY_BLINK_PUBLIC_PLATFORM_SCHEDULER_WEB_RESOURCE_LOADING_TASK_RUNNER_HANDLE_H_ |
| |
| #include "base/memory/scoped_refptr.h" |
| #include "base/single_thread_task_runner.h" |
| #include "net/base/request_priority.h" |
| #include "third_party/blink/public/platform/web_common.h" |
| |
| namespace blink { |
| namespace scheduler { |
| |
| // Provides an interface to the loading stack (i.e. WebURLLoader) to post |
| // resource loading tasks and to notify the appropriate entities when a |
| // resource's fetch priority changes. |
| // |
| // For tasks that are bound to a frame, a handle for a prioritizable task runner |
| // can be obtained from the frame scheduler's exposed interface |
| // CreateResourceLoadingTaskRunnerHandle. |
| // |
| // For the remaining tasks, the static function CreateUnprioritized (provided in |
| // this API) can be used to get a handle for an unprioritizeable task runner. |
| class BLINK_PLATFORM_EXPORT WebResourceLoadingTaskRunnerHandle { |
| public: |
| static std::unique_ptr<WebResourceLoadingTaskRunnerHandle> |
| CreateUnprioritized(scoped_refptr<base::SingleThreadTaskRunner> task_runner); |
| |
| virtual scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() const = 0; |
| |
| virtual void DidChangeRequestPriority(net::RequestPriority priority) = 0; |
| |
| virtual ~WebResourceLoadingTaskRunnerHandle() = default; |
| }; |
| |
| } // namespace scheduler |
| } // namespace blink |
| |
| #endif |