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_CHROMEOS_EXTENSIONS_INSTALL_LIMITER_H_ 6#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_INSTALL_LIMITER_H_ 7 8#include <queue> 9#include <set> 10 11#include "base/basictypes.h" 12#include "base/compiler_specific.h" 13#include "base/files/file_path.h" 14#include "base/memory/ref_counted.h" 15#include "base/memory/weak_ptr.h" 16#include "base/timer/timer.h" 17#include "chrome/browser/extensions/crx_installer.h" 18#include "components/keyed_service/core/keyed_service.h" 19#include "content/public/browser/notification_observer.h" 20#include "content/public/browser/notification_registrar.h" 21 22namespace extensions { 23 24// InstallLimiter defers big app installs after all small app installs and then 25// runs big app installs one by one. This improves first-time login experience. 26// See http://crbug.com/166296 27class InstallLimiter : public KeyedService, 28 public content::NotificationObserver, 29 public base::SupportsWeakPtr<InstallLimiter> { 30 public: 31 static InstallLimiter* Get(Profile* profile); 32 33 InstallLimiter(); 34 virtual ~InstallLimiter(); 35 36 void DisableForTest(); 37 38 void Add(const scoped_refptr<CrxInstaller>& installer, 39 const base::FilePath& path); 40 41 private: 42 // DeferredInstall holds info to run a CrxInstaller later. 43 struct DeferredInstall { 44 DeferredInstall(const scoped_refptr<CrxInstaller>& installer, 45 const base::FilePath& path); 46 ~DeferredInstall(); 47 48 const scoped_refptr<CrxInstaller> installer; 49 const base::FilePath path; 50 }; 51 52 typedef std::queue<DeferredInstall> DeferredInstallList; 53 typedef std::set<scoped_refptr<CrxInstaller> > CrxInstallerSet; 54 55 // Adds install info with size. If |size| is greater than a certain threshold, 56 // it stores the install info into |deferred_installs_| to run it later. 57 // Otherwise, it just runs the installer. 58 void AddWithSize(const scoped_refptr<CrxInstaller>& installer, 59 const base::FilePath& path, 60 int64 size); 61 62 // Checks and runs deferred big app installs when appropriate. 63 void CheckAndRunDeferrredInstalls(); 64 65 // Starts install using passed-in info and observes |installer|'s done 66 // notification. 67 void RunInstall(const scoped_refptr<CrxInstaller>& installer, 68 const base::FilePath& path); 69 70 // content::NotificationObserver overrides: 71 virtual void Observe(int type, 72 const content::NotificationSource& source, 73 const content::NotificationDetails& details) OVERRIDE; 74 75 content::NotificationRegistrar registrar_; 76 77 DeferredInstallList deferred_installs_; 78 CrxInstallerSet running_installers_; 79 80 // A timer to wait before running deferred big app install. 81 base::OneShotTimer<InstallLimiter> wait_timer_; 82 83 bool disabled_for_test_; 84 85 DISALLOW_COPY_AND_ASSIGN(InstallLimiter); 86}; 87 88} // namespace extensions 89 90#endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_INSTALL_LIMITER_H_ 91