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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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/threading/platform_thread.h" | 5 #include "base/threading/platform_thread.h" |
| 6 | 6 |
| 7 #include "base/debug/alias.h" | 7 #include "base/debug/alias.h" |
| 8 #include "base/debug/profiler.h" | 8 #include "base/debug/profiler.h" |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "base/threading/thread_id_name_manager.h" | 10 #include "base/threading/thread_id_name_manager.h" |
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| 147 // static | 147 // static |
| 148 void PlatformThread::Sleep(TimeDelta duration) { | 148 void PlatformThread::Sleep(TimeDelta duration) { |
| 149 // When measured with a high resolution clock, Sleep() sometimes returns much | 149 // When measured with a high resolution clock, Sleep() sometimes returns much |
| 150 // too early. We may need to call it repeatedly to get the desired duration. | 150 // too early. We may need to call it repeatedly to get the desired duration. |
| 151 TimeTicks end = TimeTicks::Now() + duration; | 151 TimeTicks end = TimeTicks::Now() + duration; |
| 152 for (TimeTicks now = TimeTicks::Now(); now < end; now = TimeTicks::Now()) | 152 for (TimeTicks now = TimeTicks::Now(); now < end; now = TimeTicks::Now()) |
| 153 ::Sleep(static_cast<DWORD>((end - now).InMillisecondsRoundedUp())); | 153 ::Sleep(static_cast<DWORD>((end - now).InMillisecondsRoundedUp())); |
| 154 } | 154 } |
| 155 | 155 |
| 156 // static | 156 // static |
| 157 void PlatformThread::SetName(const char* name) { | 157 void PlatformThread::SetName(const std::string& name) { |
| 158 ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name); | 158 ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name); |
| 159 | 159 |
| 160 // On Windows only, we don't need to tell the profiler about the "BrokerEvent" | 160 // On Windows only, we don't need to tell the profiler about the "BrokerEvent" |
| 161 // thread, as it exists only in the chrome.exe image, and never spawns or runs | 161 // thread, as it exists only in the chrome.exe image, and never spawns or runs |
| 162 // tasks (items which could be profiled). This test avoids the notification, | 162 // tasks (items which could be profiled). This test avoids the notification, |
| 163 // which would also (as a side effect) initialize the profiler in this unused | 163 // which would also (as a side effect) initialize the profiler in this unused |
| 164 // context, including setting up thread local storage, etc. The performance | 164 // context, including setting up thread local storage, etc. The performance |
| 165 // impact is not terrible, but there is no reason to do initialize it. | 165 // impact is not terrible, but there is no reason to do initialize it. |
| 166 if (0 != strcmp(name, "BrokerEvent")) | 166 if (name != "BrokerEvent") |
| 167 tracked_objects::ThreadData::InitializeThreadContext(name); | 167 tracked_objects::ThreadData::InitializeThreadContext(name); |
| 168 | 168 |
| 169 // The debugger needs to be around to catch the name in the exception. If | 169 // The debugger needs to be around to catch the name in the exception. If |
| 170 // there isn't a debugger, we are just needlessly throwing an exception. | 170 // there isn't a debugger, we are just needlessly throwing an exception. |
| 171 // If this image file is instrumented, we raise the exception anyway | 171 // If this image file is instrumented, we raise the exception anyway |
| 172 // to provide the profiler with human-readable thread names. | 172 // to provide the profiler with human-readable thread names. |
| 173 if (!::IsDebuggerPresent() && !base::debug::IsBinaryInstrumented()) | 173 if (!::IsDebuggerPresent() && !base::debug::IsBinaryInstrumented()) |
| 174 return; | 174 return; |
| 175 | 175 |
| 176 SetNameInternal(CurrentId(), name); | 176 SetNameInternal(CurrentId(), name.c_str()); |
| 177 } | 177 } |
| 178 | 178 |
| 179 // static | 179 // static |
| 180 const char* PlatformThread::GetName() { | 180 const char* PlatformThread::GetName() { |
| 181 return ThreadIdNameManager::GetInstance()->GetName(CurrentId()); | 181 return ThreadIdNameManager::GetInstance()->GetName(CurrentId()); |
| 182 } | 182 } |
| 183 | 183 |
| 184 // static | 184 // static |
| 185 bool PlatformThread::Create(size_t stack_size, Delegate* delegate, | 185 bool PlatformThread::Create(size_t stack_size, Delegate* delegate, |
| 186 PlatformThreadHandle* thread_handle) { | 186 PlatformThreadHandle* thread_handle) { |
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| 279 return ThreadPriority::REALTIME_AUDIO; | 279 return ThreadPriority::REALTIME_AUDIO; |
| 280 case THREAD_PRIORITY_ERROR_RETURN: | 280 case THREAD_PRIORITY_ERROR_RETURN: |
| 281 DPCHECK(false) << "GetThreadPriority error"; // Falls through. | 281 DPCHECK(false) << "GetThreadPriority error"; // Falls through. |
| 282 default: | 282 default: |
| 283 NOTREACHED() << "Unexpected priority: " << priority; | 283 NOTREACHED() << "Unexpected priority: " << priority; |
| 284 return ThreadPriority::NORMAL; | 284 return ThreadPriority::NORMAL; |
| 285 } | 285 } |
| 286 } | 286 } |
| 287 | 287 |
| 288 } // namespace base | 288 } // namespace base |
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