content/public/common/child_process_host_delegate.h

   1 // Copyright (c) 2012 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_COMMON_CHILD_PROCESS_HOST_DELEGATE_H_
   6 #define CONTENT_PUBLIC_COMMON_CHILD_PROCESS_HOST_DELEGATE_H_
   7
   8 #include <string>
   9
  10 #include "content/common/content_export.h"
  11 #include "ipc/ipc_listener.h"
  12
  13 namespace content {
  14
  15 // Interface that all users of ChildProcessHost need to provide.
  16 class ChildProcessHostDelegate : public IPC::Listener {
  17  public:
  18   virtual ~ChildProcessHostDelegate() {}
  19
  20   // Delegates return true if it's ok to shut down the child process (which is
  21   // the default return value). The exception is if the host is in the middle of
  22   // sending a request to the process, in which case the other side might think
  23   // it's ok to shutdown, when really it's not.
  24   CONTENT_EXPORT virtual bool CanShutdown();
  25
  26   // Called when the child process unexpected closes the IPC channel. Delegates
  27   // would normally delete the object in this case.
  28   virtual void OnChildDisconnected() {}
  29 };
  30
  31 };  // namespace content
  32
  33 #endif  // CONTENT_PUBLIC_COMMON_CHILD_PROCESS_HOST_DELEGATE_H_