| // Copyright (c) 2012 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 CHROME_BROWSER_PROFILES_PROFILE_DESTROYER_H_ |
| #define CHROME_BROWSER_PROFILES_PROFILE_DESTROYER_H_ |
| |
| #include <set> |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/timer/timer.h" |
| #include "content/public/browser/render_process_host_observer.h" |
| |
| class Profile; |
| |
| namespace content { |
| class RenderProcessHost; |
| } |
| |
| // We use this class to destroy the off the record profile so that we can make |
| // sure it gets done asynchronously after all render process hosts are gone. |
| class ProfileDestroyer : public content::RenderProcessHostObserver { |
| public: |
| static void DestroyProfileWhenAppropriate(Profile* const profile); |
| static void DestroyOffTheRecordProfileNow(Profile* const profile); |
| |
| private: |
| typedef std::set<content::RenderProcessHost*> HostSet; |
| typedef std::set<ProfileDestroyer*> DestroyerSet; |
| |
| friend class base::RefCounted<ProfileDestroyer>; |
| |
| ProfileDestroyer(Profile* const profile, HostSet* hosts); |
| virtual ~ProfileDestroyer(); |
| |
| // content::RenderProcessHostObserver override. |
| virtual void RenderProcessHostDestroyed( |
| content::RenderProcessHost* host) OVERRIDE; |
| |
| // Called by the timer to cancel the pending destruction and do it now. |
| void DestroyProfile(); |
| |
| // Fetch the list of render process hosts that still refer to the profile. |
| // Return true if we found at least one, false otherwise. |
| static bool GetHostsForProfile(Profile* const profile, HostSet* hosts); |
| |
| // We need access to all pending destroyers so we can cancel them. |
| static DestroyerSet* pending_destroyers_; |
| |
| // We don't want to wait forever, so we have a cancellation timer. |
| base::Timer timer_; |
| |
| // Used to count down the number of render process host left. |
| uint32 num_hosts_; |
| |
| // The profile being destroyed. If it is set to NULL, it is a signal from |
| // another instance of ProfileDestroyer that this instance is canceled. |
| Profile* profile_; |
| |
| base::WeakPtrFactory<ProfileDestroyer> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ProfileDestroyer); |
| }; |
| |
| #endif // CHROME_BROWSER_PROFILES_PROFILE_DESTROYER_H_ |