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[chromium-blink-merge.git] / chrome / browser / profiles / profile_destroyer.h
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1 // Copyright (c) 2012 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.
5 #ifndef CHROME_BROWSER_PROFILES_PROFILE_DESTROYER_H_
6 #define CHROME_BROWSER_PROFILES_PROFILE_DESTROYER_H_
8 #include <vector>
10 #include "base/memory/ref_counted.h"
11 #include "base/timer/timer.h"
12 #include "content/public/browser/notification_observer.h"
13 #include "content/public/browser/notification_registrar.h"
15 class Profile;
16 namespace content {
17 class RenderProcessHost;
20 // We use this class to destroy the off the record profile so that we can make
21 // sure it gets done asynchronously after all render process hosts are gone.
22 class ProfileDestroyer
23 : public content::NotificationObserver {
24 public:
25 static void DestroyProfileWhenAppropriate(Profile* const profile);
26 static void DestroyOffTheRecordProfileNow(Profile* const profile);
28 private:
29 friend class base::RefCounted<ProfileDestroyer>;
31 ProfileDestroyer(
32 Profile* const profile,
33 const std::vector<content::RenderProcessHost*>& hosts);
34 virtual ~ProfileDestroyer();
36 // content::NotificationObserver override.
37 virtual void Observe(int type,
38 const content::NotificationSource& source,
39 const content::NotificationDetails& details) OVERRIDE;
40 // Called by the timer to cancel the pending detruction and do it now.
41 void DestroyProfile();
43 // Fetch the list of render process hosts that still refer to the profile.
44 // Return true if we found at least one, false otherwise.
45 static bool GetHostsForProfile(
46 Profile* const profile,
47 std::vector<content::RenderProcessHost*> *hosts);
49 // We need access to all pending destroyers so we can cancel them.
50 static std::vector<ProfileDestroyer*>* pending_destroyers_;
52 // We register for render process host termination.
53 content::NotificationRegistrar registrar_;
55 // We don't want to wait forever, so we have a cancellation timer.
56 base::Timer timer_;
58 // Used to count down the number of render process host left.
59 uint32 num_hosts_;
61 Profile* profile_;
63 base::WeakPtrFactory<ProfileDestroyer> weak_ptr_factory_;
65 DISALLOW_COPY_AND_ASSIGN(ProfileDestroyer);
68 #endif // CHROME_BROWSER_PROFILES_PROFILE_DESTROYER_H_