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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 WEBKIT_GLUE_WEBKIT_CONSTANTS_H_ | 5 #ifndef WEBKIT_GLUE_WEBKIT_CONSTANTS_H_ |
6 #define WEBKIT_GLUE_WEBKIT_CONSTANTS_H_ | 6 #define WEBKIT_GLUE_WEBKIT_CONSTANTS_H_ |
7 | 7 |
8 namespace webkit_glue { | 8 namespace webkit_glue { |
9 | 9 |
10 // Chromium sets the minimum interval timeout to 4ms, overriding the | 10 // Chromium sets the minimum interval timeout to 4ms, overriding the |
11 // default of 10ms. We'd like to go lower, however there are poorly | 11 // default of 10ms. We'd like to go lower, however there are poorly |
12 // coded websites out there which do create CPU-spinning loops. Using | 12 // coded websites out there which do create CPU-spinning loops. Using |
13 // 4ms prevents the CPU from spinning too busily and provides a balance | 13 // 4ms prevents the CPU from spinning too busily and provides a balance |
14 // between CPU spinning and the smallest possible interval timer. | 14 // between CPU spinning and the smallest possible interval timer. |
15 const double kForegroundTabTimerInterval = 0.004; | 15 const double kForegroundTabTimerInterval = 0.004; |
16 | 16 |
17 // Provides control over the minimum timer interval for background tabs. | 17 // Provides control over the minimum timer interval for background tabs. |
18 const double kBackgroundTabTimerInterval = 0.004; | 18 const double kBackgroundTabTimerInterval = 1.0; |
19 | 19 |
20 } // namespace webkit_glue | 20 } // namespace webkit_glue |
21 | 21 |
22 #endif // WEBKIT_GLUE_WEBKIT_CONSTANTS_H_ | 22 #endif // WEBKIT_GLUE_WEBKIT_CONSTANTS_H_ |
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