content/public/browser/render_process_host_observer.h

   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_RENDER_PROCESS_HOST_OBSERVER_H_
   6 #define CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_OBSERVER_H_
   7
   8 #include "base/process/kill.h"
   9 #include "base/process/process_handle.h"
  10 #include "content/common/content_export.h"
  11
  12 namespace content {
  13
  14 class RenderProcessHost;
  15
  16 // An observer API implemented by classes which are interested
  17 // in RenderProcessHost lifecycle events.
  18 class CONTENT_EXPORT RenderProcessHostObserver {
  19  public:
  20   // This method is invoked when the process of the observed RenderProcessHost
  21   // exits (either normally or with a crash). To determine if the process closed
  22   // normally or crashed, examine the |status| parameter.
  23   //
  24   // This will cause a call to WebContentsObserver::RenderProcessGone() for the
  25   // active renderer process for the top-level frame; for code that needs to be
  26   // a WebContentsObserver anyway, consider whether that API might be a better
  27   // choice.
  28   virtual void RenderProcessExited(RenderProcessHost* host,
  29                                    base::TerminationStatus status,
  30                                    int exit_code) {}
  31
  32   // This method is invoked when the observed RenderProcessHost itself is
  33   // destroyed. This is guaranteed to be the last call made to the observer.
  34   virtual void RenderProcessHostDestroyed(RenderProcessHost* host) {}
  35
  36  protected:
  37   virtual ~RenderProcessHostObserver() {}
  38 };
  39
  40 }  // namespace content
  41
  42 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_OBSERVER_H_