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// 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.
#include "chrome/browser/profiles/profile_destroyer.h"
#include "base/bind.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_process_host.h"
// static
void ProfileDestroyer::DestroyProfileWhenAppropriate(Profile* const profile) {
std::vector<content::RenderProcessHost*> hosts;
// Testing profiles can simply be deleted directly. Some tests don't setup
// RenderProcessHost correctly and don't necessary run on the UI thread
// anyway, so we can't use the AllHostIterator.
if (profile->AsTestingProfile() == NULL) {
GetHostsForProfile(profile, &hosts);
if (!profile->IsOffTheRecord() && profile->HasOffTheRecordProfile())
GetHostsForProfile(profile->GetOffTheRecordProfile(), &hosts);
}
if (hosts.empty()) {
if (profile->IsOffTheRecord())
profile->GetOriginalProfile()->DestroyOffTheRecordProfile();
else
delete profile;
} else {
// The instance will destroy itself once all render process hosts referring
// to it and/or it's off the record profile are properly terminated.
scoped_refptr<ProfileDestroyer> profile_destroyer(
new ProfileDestroyer(profile, hosts));
}
}
ProfileDestroyer::ProfileDestroyer(
Profile* const profile,
const std::vector<content::RenderProcessHost*>& hosts) : profile_(profile) {
for (size_t i = 0; i < hosts.size(); ++i) {
registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
content::Source<content::RenderProcessHost>(hosts[i]));
// For each of the notifications, we bump up our reference count.
// It will go back to 0 and free us when all hosts are terminated.
AddRef();
}
}
ProfileDestroyer::~ProfileDestroyer() {
// Check again, in case other render hosts were added while we were
// waiting for the previous ones to go away...
DestroyProfileWhenAppropriate(profile_);
}
void ProfileDestroyer::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(type == content::NOTIFICATION_RENDERER_PROCESS_TERMINATED);
// Delay the destruction one step further in case other observers of this
// notification need to look at the profile attached to the host.
MessageLoop::current()->PostTask(
FROM_HERE, base::Bind(&ProfileDestroyer::Release, this));
}
// static
bool ProfileDestroyer::GetHostsForProfile(
Profile* const profile, std::vector<content::RenderProcessHost*>* hosts) {
for (content::RenderProcessHost::iterator iter(
content::RenderProcessHost::AllHostsIterator());
!iter.IsAtEnd(); iter.Advance()) {
content::RenderProcessHost* render_process_host = iter.GetCurrentValue();
if (render_process_host && Profile::FromBrowserContext(
render_process_host->GetBrowserContext()) == profile) {
hosts->push_back(render_process_host);
}
}
return !hosts->empty();
}
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