• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 BASE_X11_X11_ERROR_TRACKER_H_
6 #define BASE_X11_X11_ERROR_TRACKER_H_
7 
8 #include <X11/Xlib.h>
9 
10 #include "base/base_export.h"
11 #include "base/basictypes.h"
12 
13 namespace base {
14 
15 // X11ErrorTracker catches X11 errors in a non-fatal way. It does so by
16 // temporarily changing the X11 error handler. The old error handler is
17 // restored when the tracker is destroyed.
18 class BASE_EXPORT X11ErrorTracker {
19  public:
20   X11ErrorTracker();
21   ~X11ErrorTracker();
22 
23   // Returns whether an X11 error happened since this function was last called
24   // (or since the creation of the tracker). This is potentially expensive,
25   // since this causes a sync with the X server.
26   bool FoundNewError();
27 
28  private:
29 #if !defined(TOOLKIT_GTK)
30   XErrorHandler old_handler_;
31 #endif
32 
33   DISALLOW_COPY_AND_ASSIGN(X11ErrorTracker);
34 };
35 
36 }  // namespace base
37 
38 #endif  // BASE_X11_X11_ERROR_TRACKER_H_
39