chromium/components/keep_alive_registry/keep_alive_registry.h

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_KEEP_ALIVE_REGISTRY_KEEP_ALIVE_REGISTRY_H_
#define COMPONENTS_KEEP_ALIVE_REGISTRY_KEEP_ALIVE_REGISTRY_H_

#include <unordered_map>
#include <vector>

#include "base/memory/singleton.h"
#include "base/observer_list.h"

enum class KeepAliveOrigin;
enum class KeepAliveRestartOption;
class KeepAliveStateObserver;

// Centralized registry that objects in the browser can use to
// express their requirements wrt the lifetime of the browser.
// Observers registered with it can then react as those requirements
// change.
// In particular, this is how the browser process knows when to stop
// or stay alive.
// Note: BrowserProcessImpl registers to react on changes.
// TestingBrowserProcess does not do it, meaning that the shutdown
// sequence does not happen during unit tests.
// Note: This is not thread-safe, and should only be used on the main thread.
class KeepAliveRegistry { … };

#endif  // COMPONENTS_KEEP_ALIVE_REGISTRY_KEEP_ALIVE_REGISTRY_H_