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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 #include "base/debug/trace_event_synthetic_delay.h" | 5 #include "base/debug/trace_event_synthetic_delay.h" |
| 6 #include "base/memory/singleton.h" | 6 #include "base/memory/singleton.h" |
| 7 | 7 |
| 8 namespace { | 8 namespace { |
| 9 const int kMaxSyntheticDelays = 32; | 9 const int kMaxSyntheticDelays = 32; |
| 10 } // namespace | 10 } // namespace |
| 11 | 11 |
| 12 namespace base { | 12 namespace base { |
| 13 namespace debug { | 13 namespace debug { |
| 14 | 14 |
| 15 TraceEventSyntheticDelayClock::TraceEventSyntheticDelayClock() {} | 15 TraceEventSyntheticDelayClock::TraceEventSyntheticDelayClock() {} |
| 16 TraceEventSyntheticDelayClock::~TraceEventSyntheticDelayClock() {} | 16 TraceEventSyntheticDelayClock::~TraceEventSyntheticDelayClock() {} |
| 17 | 17 |
| 18 class TraceEventSyntheticDelayRegistry : public TraceEventSyntheticDelayClock { | 18 class TraceEventSyntheticDelayRegistry : public TraceEventSyntheticDelayClock { |
| 19 public: | 19 public: |
| 20 static TraceEventSyntheticDelayRegistry* GetInstance(); | 20 static TraceEventSyntheticDelayRegistry* GetInstance(); |
| 21 | 21 |
| 22 TraceEventSyntheticDelay* GetOrCreateDelay(const char* name); | 22 TraceEventSyntheticDelay* GetOrCreateDelay(const char* name); |
| 23 void ResetAllDelays(); | 23 void ResetAllDelays(); |
| 24 | 24 |
| 25 // TraceEventSyntheticDelayClock implementation. | 25 // TraceEventSyntheticDelayClock implementation. |
| 26 virtual base::TimeTicks Now() OVERRIDE; | 26 virtual base::TimeTicks Now() override; |
| 27 | 27 |
| 28 private: | 28 private: |
| 29 TraceEventSyntheticDelayRegistry(); | 29 TraceEventSyntheticDelayRegistry(); |
| 30 | 30 |
| 31 friend struct DefaultSingletonTraits<TraceEventSyntheticDelayRegistry>; | 31 friend struct DefaultSingletonTraits<TraceEventSyntheticDelayRegistry>; |
| 32 | 32 |
| 33 Lock lock_; | 33 Lock lock_; |
| 34 TraceEventSyntheticDelay delays_[kMaxSyntheticDelays]; | 34 TraceEventSyntheticDelay delays_[kMaxSyntheticDelays]; |
| 35 TraceEventSyntheticDelay dummy_delay_; | 35 TraceEventSyntheticDelay dummy_delay_; |
| 36 base::subtle::Atomic32 delay_count_; | 36 base::subtle::Atomic32 delay_count_; |
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| 224 if (!delay_impl) { | 224 if (!delay_impl) { |
| 225 delay_impl = base::debug::TraceEventSyntheticDelayRegistry::GetInstance() | 225 delay_impl = base::debug::TraceEventSyntheticDelayRegistry::GetInstance() |
| 226 ->GetOrCreateDelay(name); | 226 ->GetOrCreateDelay(name); |
| 227 base::subtle::Release_Store( | 227 base::subtle::Release_Store( |
| 228 impl_ptr, reinterpret_cast<base::subtle::AtomicWord>(delay_impl)); | 228 impl_ptr, reinterpret_cast<base::subtle::AtomicWord>(delay_impl)); |
| 229 } | 229 } |
| 230 return delay_impl; | 230 return delay_impl; |
| 231 } | 231 } |
| 232 | 232 |
| 233 } // namespace trace_event_internal | 233 } // namespace trace_event_internal |
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