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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/ui/uma_browsing_activity_observer.h"
#include "base/metrics/histogram.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/common/chrome_notification_types.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/render_process_host.h"
namespace chrome {
namespace {
UMABrowsingActivityObserver* g_instance = NULL;
} // namespace
// static
void UMABrowsingActivityObserver::Init() {
DCHECK(!g_instance);
DCHECK(BrowserList::empty()); // Must be created before any Browsers are.
g_instance = new UMABrowsingActivityObserver;
}
UMABrowsingActivityObserver::UMABrowsingActivityObserver() {
registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_COMMITTED,
content::NotificationService::AllSources());
registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
content::NotificationService::AllSources());
}
UMABrowsingActivityObserver::~UMABrowsingActivityObserver() {
}
void UMABrowsingActivityObserver::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
if (type == content::NOTIFICATION_NAV_ENTRY_COMMITTED) {
const content::LoadCommittedDetails& load =
*content::Details<content::LoadCommittedDetails>(details).ptr();
if (!load.is_navigation_to_different_page())
return; // Don't log for subframes or other trivial types.
LogRenderProcessHostCount();
LogBrowserTabCount();
} else if (type == chrome::NOTIFICATION_APP_TERMINATING) {
delete g_instance;
g_instance = NULL;
}
}
void UMABrowsingActivityObserver::LogRenderProcessHostCount() const {
int hosts_count = 0;
for (content::RenderProcessHost::iterator i(
content::RenderProcessHost::AllHostsIterator());
!i.IsAtEnd(); i.Advance())
++hosts_count;
UMA_HISTOGRAM_CUSTOM_COUNTS("MPArch.RPHCountPerLoad", hosts_count,
1, 50, 50);
}
void UMABrowsingActivityObserver::LogBrowserTabCount() const {
int tab_count = 0;
for (BrowserList::const_iterator browser_iterator = BrowserList::begin();
browser_iterator != BrowserList::end(); browser_iterator++) {
// Record how many tabs each window has open.
Browser* browser = (*browser_iterator);
UMA_HISTOGRAM_CUSTOM_COUNTS("Tabs.TabCountPerWindow",
browser->tab_count(), 1, 200, 50);
tab_count += browser->tab_count();
if (browser->window()->IsActive()) {
// Record how many tabs the active window has open.
UMA_HISTOGRAM_CUSTOM_COUNTS("Tabs.TabCountActiveWindow",
browser->tab_count(), 1, 200, 50);
}
}
// Record how many tabs total are open (across all windows).
UMA_HISTOGRAM_CUSTOM_COUNTS("Tabs.TabCountPerLoad", tab_count, 1, 200, 50);
}
} // namespace chrome
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