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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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 #include "base/message_loop/message_pump_default.h" | 5 #include "base/message_loop/message_pump_default.h" |
| 6 | 6 |
| 7 #include <algorithm> | |
| 8 | |
| 9 #include "base/logging.h" | 7 #include "base/logging.h" |
| 10 #include "base/threading/thread_restrictions.h" | 8 #include "base/threading/thread_restrictions.h" |
| 11 | 9 |
| 12 #if defined(OS_MACOSX) | 10 #if defined(OS_MACOSX) |
| 13 #include "base/mac/scoped_nsautorelease_pool.h" | 11 #include "base/mac/scoped_nsautorelease_pool.h" |
| 14 #endif | 12 #endif |
| 15 | 13 |
| 16 namespace base { | 14 namespace base { |
| 17 | 15 |
| 18 MessagePumpDefault::MessagePumpDefault() | 16 MessagePumpDefault::MessagePumpDefault() |
| (...skipping 28 matching lines...) Expand all Loading... |
| 47 break; | 45 break; |
| 48 | 46 |
| 49 if (did_work) | 47 if (did_work) |
| 50 continue; | 48 continue; |
| 51 | 49 |
| 52 ThreadRestrictions::ScopedAllowWait allow_wait; | 50 ThreadRestrictions::ScopedAllowWait allow_wait; |
| 53 if (delayed_work_time_.is_null()) { | 51 if (delayed_work_time_.is_null()) { |
| 54 event_.Wait(); | 52 event_.Wait(); |
| 55 } else { | 53 } else { |
| 56 TimeDelta delay = delayed_work_time_ - TimeTicks::Now(); | 54 TimeDelta delay = delayed_work_time_ - TimeTicks::Now(); |
| 57 #if defined(OS_WIN) | |
| 58 // If the delay is greater than zero and under 1 ms we need to round up to | |
| 59 // 1 ms or else we will end up spinning until it counts down to zero | |
| 60 // because sub-ms waits aren't supported on Windows. | |
| 61 if (delay > TimeDelta()) | |
| 62 delay = std::max(delay, TimeDelta::FromMilliseconds(1)); | |
| 63 #endif | |
| 64 if (delay > TimeDelta()) { | 55 if (delay > TimeDelta()) { |
| 65 event_.TimedWait(delay); | 56 event_.TimedWait(delay); |
| 66 } else { | 57 } else { |
| 67 // It looks like delayed_work_time_ indicates a time in the past, so we | 58 // It looks like delayed_work_time_ indicates a time in the past, so we |
| 68 // need to call DoDelayedWork now. | 59 // need to call DoDelayedWork now. |
| 69 delayed_work_time_ = TimeTicks(); | 60 delayed_work_time_ = TimeTicks(); |
| 70 } | 61 } |
| 71 } | 62 } |
| 72 // Since event_ is auto-reset, we don't need to do anything special here | 63 // Since event_ is auto-reset, we don't need to do anything special here |
| 73 // other than service each delegate method. | 64 // other than service each delegate method. |
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| 88 | 79 |
| 89 void MessagePumpDefault::ScheduleDelayedWork( | 80 void MessagePumpDefault::ScheduleDelayedWork( |
| 90 const TimeTicks& delayed_work_time) { | 81 const TimeTicks& delayed_work_time) { |
| 91 // We know that we can't be blocked on Wait right now since this method can | 82 // We know that we can't be blocked on Wait right now since this method can |
| 92 // only be called on the same thread as Run, so we only need to update our | 83 // only be called on the same thread as Run, so we only need to update our |
| 93 // record of how long to sleep when we do sleep. | 84 // record of how long to sleep when we do sleep. |
| 94 delayed_work_time_ = delayed_work_time; | 85 delayed_work_time_ = delayed_work_time; |
| 95 } | 86 } |
| 96 | 87 |
| 97 } // namespace base | 88 } // namespace base |
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