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| 1 /* | 1 /* |
| 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
| 11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
| 12 * | 12 * |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 * | 24 * |
| 25 */ | 25 */ |
| 26 | 26 |
| 27 #include "config.h" | 27 #include "sky/engine/config.h" |
| 28 #include "core/frame/DOMTimer.h" | 28 #include "sky/engine/core/frame/DOMTimer.h" |
| 29 | 29 |
| 30 #include "core/dom/ExecutionContext.h" | 30 #include "sky/engine/core/dom/ExecutionContext.h" |
| 31 #include "core/inspector/InspectorTraceEvents.h" | 31 #include "sky/engine/core/inspector/InspectorTraceEvents.h" |
| 32 #include "platform/Logging.h" | 32 #include "sky/engine/platform/Logging.h" |
| 33 #include "platform/TraceEvent.h" | 33 #include "sky/engine/platform/TraceEvent.h" |
| 34 #include "wtf/CurrentTime.h" | 34 #include "sky/engine/wtf/CurrentTime.h" |
| 35 | 35 |
| 36 namespace blink { | 36 namespace blink { |
| 37 | 37 |
| 38 static const int maxIntervalForUserGestureForwarding = 1000; // One second match
es Gecko. | 38 static const int maxIntervalForUserGestureForwarding = 1000; // One second match
es Gecko. |
| 39 static const int maxTimerNestingLevel = 5; | 39 static const int maxTimerNestingLevel = 5; |
| 40 static const double oneMillisecond = 0.001; | 40 static const double oneMillisecond = 0.001; |
| 41 // Chromium uses a minimum timer interval of 4ms. We'd like to go | 41 // Chromium uses a minimum timer interval of 4ms. We'd like to go |
| 42 // lower; however, there are poorly coded websites out there which do | 42 // lower; however, there are poorly coded websites out there which do |
| 43 // create CPU-spinning loops. Using 4ms prevents the CPU from | 43 // create CPU-spinning loops. Using 4ms prevents the CPU from |
| 44 // spinning too busily and provides a balance between CPU spinning and | 44 // spinning too busily and provides a balance between CPU spinning and |
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| 196 if (fireTime - alignedTimeRoundedDown < minimumInterval) | 196 if (fireTime - alignedTimeRoundedDown < minimumInterval) |
| 197 return alignedTimeRoundedDown; | 197 return alignedTimeRoundedDown; |
| 198 | 198 |
| 199 return alignedTimeRoundedUp; | 199 return alignedTimeRoundedUp; |
| 200 } | 200 } |
| 201 | 201 |
| 202 return fireTime; | 202 return fireTime; |
| 203 } | 203 } |
| 204 | 204 |
| 205 } // namespace blink | 205 } // namespace blink |
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