blob: 1cec99123807652e3ab5a9988ff977c5c4b1a1d2 [file] [log] [blame]
// 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 "base/basictypes.h"
#include "base/callback.h"
#include "base/time/time.h"
#include "content/common/content_export.h"
namespace base {
class MessageLoop;
namespace content {
// Fetch histogram data asynchronously from the various child processes, into
// the browser process. This method is used by the metrics services in
// preparation for a log upload. It contacts all processes, and get them to
// upload to the browser any/all changes to histograms. When all changes have
// been acquired, or when the wait time expires (whichever is sooner), post the
// callback to the specified message loop. Note the callback is posted exactly
// once.
CONTENT_EXPORT void FetchHistogramsAsynchronously(
base::MessageLoop* callback_thread,
const base::Closure& callback,
base::TimeDelta wait_time);
} // namespace content