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 10 namespace content { 11 12 struct 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. 17 class CONTENT_EXPORT BrowserChildProcessObserver { 18 public: 19 // Called when a child process host has connected to a child process. BrowserChildProcessHostConnected(const ChildProcessData & data)20 virtual void BrowserChildProcessHostConnected(const ChildProcessData& data) {} 21 22 // Called after a ChildProcessHost is disconnected from the child process. BrowserChildProcessHostDisconnected(const ChildProcessData & data)23 virtual void BrowserChildProcessHostDisconnected( 24 const ChildProcessData& data) {} 25 26 // Called when a child process disappears unexpectedly as a result of a crash. BrowserChildProcessCrashed(const ChildProcessData & data)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. BrowserChildProcessInstanceCreated(const ChildProcessData & data)32 virtual void BrowserChildProcessInstanceCreated( 33 const ChildProcessData& data) {} 34 35 protected: 36 // The observer can be destroyed on any thread. ~BrowserChildProcessObserver()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