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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef UI_GFX_X_X11_ERROR_TRACKER_H_ | 5 #ifndef UI_GFX_X_X11_ERROR_TRACKER_H_ |
| 6 #define UI_GFX_X_X11_ERROR_TRACKER_H_ | 6 #define UI_GFX_X_X11_ERROR_TRACKER_H_ |
| 7 | 7 |
| 8 #include <X11/Xlib.h> | 8 #include <X11/Xlib.h> |
| 9 | 9 |
| 10 #include "base/basictypes.h" | 10 #include "base/macros.h" |
| 11 #include "ui/gfx/gfx_export.h" | 11 #include "ui/gfx/gfx_export.h" |
| 12 | 12 |
| 13 namespace gfx { | 13 namespace gfx { |
| 14 | 14 |
| 15 // X11ErrorTracker catches X11 errors in a non-fatal way. It does so by | 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 | 16 // temporarily changing the X11 error handler. The old error handler is |
| 17 // restored when the tracker is destroyed. | 17 // restored when the tracker is destroyed. |
| 18 class GFX_EXPORT X11ErrorTracker { | 18 class GFX_EXPORT X11ErrorTracker { |
| 19 public: | 19 public: |
| 20 X11ErrorTracker(); | 20 X11ErrorTracker(); |
| 21 ~X11ErrorTracker(); | 21 ~X11ErrorTracker(); |
| 22 | 22 |
| 23 // Returns whether an X11 error happened since this function was last called | 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, | 24 // (or since the creation of the tracker). This is potentially expensive, |
| 25 // since this causes a sync with the X server. | 25 // since this causes a sync with the X server. |
| 26 bool FoundNewError(); | 26 bool FoundNewError(); |
| 27 | 27 |
| 28 private: | 28 private: |
| 29 XErrorHandler old_handler_; | 29 XErrorHandler old_handler_; |
| 30 | 30 |
| 31 DISALLOW_COPY_AND_ASSIGN(X11ErrorTracker); | 31 DISALLOW_COPY_AND_ASSIGN(X11ErrorTracker); |
| 32 }; | 32 }; |
| 33 | 33 |
| 34 } // namespace gfx | 34 } // namespace gfx |
| 35 | 35 |
| 36 #endif // UI_GFX_X_X11_ERROR_TRACKER_H_ | 36 #endif // UI_GFX_X_X11_ERROR_TRACKER_H_ |
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