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// Copyright (c) 2010 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/chromeos/browser_notification_observers.h"
#include <string>
#include "base/file_util.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/common/notification_service.h"
namespace {
// Static function that records uptime in /proc/uptime to tmp for metrics use.
void RecordUptime() {
std::string uptime;
const FilePath proc_uptime = FilePath("/proc/uptime");
const FilePath uptime_output = FilePath("/tmp/uptime-chrome-first-render");
if (file_util::ReadFileToString(proc_uptime, &uptime))
file_util::WriteFile(uptime_output, uptime.data(), uptime.size());
}
} // namespace
namespace chromeos {
InitialTabNotificationObserver::InitialTabNotificationObserver() {
registrar_.Add(this, NotificationType::LOAD_START,
NotificationService::AllSources());
}
InitialTabNotificationObserver::~InitialTabNotificationObserver() {
}
void InitialTabNotificationObserver::Observe(
NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
// Only log for first tab to render. Make sure this is only done once.
if (type == NotificationType::LOAD_START &&
num_tabs_.GetNext() == 0) {
// If we can't post it, it doesn't matter.
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableFunction(RecordUptime));
registrar_.Remove(this, NotificationType::LOAD_START,
NotificationService::AllSources());
}
}
} // namespace chromeos
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