browser_child_process_observer.h revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9
1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_OBSERVER_H_ 6#define CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_OBSERVER_H_ 7 8#include "content/common/content_export.h" 9 10namespace content { 11 12struct ChildProcessData; 13 14// An observer API implemented by classes which are interested in browser child 15// process events. Note that render processes cannot be observed through this 16// interface; use RenderProcessHostObserver instead. 17class CONTENT_EXPORT BrowserChildProcessObserver { 18 public: 19 // Called when a child process host has connected to a child process. 20 virtual void BrowserChildProcessHostConnected(const ChildProcessData& data) {} 21 22 // Called after a ChildProcessHost is disconnected from the child process. 23 virtual void BrowserChildProcessHostDisconnected( 24 const ChildProcessData& data) {} 25 26 // Called when a child process disappears unexpectedly as a result of a crash. 27 virtual void BrowserChildProcessCrashed(const ChildProcessData& data) {} 28 29 // Called when an instance of a particular child is created in a page. If one 30 // page contains several regions rendered by the same child, this will be 31 // called once for each region during the page load. 32 virtual void BrowserChildProcessInstanceCreated( 33 const ChildProcessData& data) {} 34 35 protected: 36 // The observer can be destroyed on any thread. 37 virtual ~BrowserChildProcessObserver() {} 38 39 static void Add(BrowserChildProcessObserver* observer); 40 static void Remove(BrowserChildProcessObserver* observer); 41}; 42 43} // namespace content 44 45#endif // CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_OBSERVER_H_ 46