1 // Copyright (c) 2013 The Chromium 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 CHROME_BROWSER_PROFILES_STARTUP_TASK_RUNNER_SERVICE_H_ 6 #define CHROME_BROWSER_PROFILES_STARTUP_TASK_RUNNER_SERVICE_H_ 7 8 #include "base/basictypes.h" 9 #include "base/memory/ref_counted.h" 10 #include "base/threading/non_thread_safe.h" 11 #include "components/keyed_service/core/keyed_service.h" 12 13 class Profile; 14 15 namespace base { 16 class DeferredSequencedTaskRunner; 17 } // namespace base 18 19 // This service manages the startup task runners. 20 class StartupTaskRunnerService : public base::NonThreadSafe, 21 public KeyedService { 22 public: 23 explicit StartupTaskRunnerService(Profile* profile); 24 virtual ~StartupTaskRunnerService(); 25 26 // Returns sequenced task runner where all bookmarks I/O operations are 27 // performed. 28 // This method should only be called from the UI thread. 29 // Note: Using a separate task runner per profile service gives a better 30 // management of the sequence in which the task are started in order to avoid 31 // congestion during start-up (e.g the caller may decide to start loading the 32 // bookmarks only after the history finished). 33 scoped_refptr<base::DeferredSequencedTaskRunner> GetBookmarkTaskRunner(); 34 35 // Starts the task runners that are deferred during start-up. 36 void StartDeferredTaskRunners(); 37 38 private: 39 Profile* profile_; 40 scoped_refptr<base::DeferredSequencedTaskRunner> bookmark_task_runner_; 41 42 DISALLOW_COPY_AND_ASSIGN(StartupTaskRunnerService); 43 }; 44 45 #endif // CHROME_BROWSER_PROFILES_STARTUP_TASK_RUNNER_SERVICE_H_ 46