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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 | 5 |
6 #ifndef BASE_DEBUG_TRACE_EVENT_IMPL_H_ | 6 #ifndef BASE_DEBUG_TRACE_EVENT_IMPL_H_ |
7 #define BASE_DEBUG_TRACE_EVENT_IMPL_H_ | 7 #define BASE_DEBUG_TRACE_EVENT_IMPL_H_ |
8 | 8 |
9 #include "build/build_config.h" | 9 #include "build/build_config.h" |
10 | 10 |
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210 | 210 |
211 #if defined(OS_ANDROID) | 211 #if defined(OS_ANDROID) |
212 static void InitATrace(); | 212 static void InitATrace(); |
213 #endif | 213 #endif |
214 | 214 |
215 // Enabled state listeners give a callback when tracing is enabled or | 215 // Enabled state listeners give a callback when tracing is enabled or |
216 // disabled. This can be used to tie into other library's tracing systems | 216 // disabled. This can be used to tie into other library's tracing systems |
217 // on-demand. | 217 // on-demand. |
218 class EnabledStateChangedObserver { | 218 class EnabledStateChangedObserver { |
219 public: | 219 public: |
| 220 virtual ~EnabledStateChangedObserver() { } |
| 221 |
220 // Called just before the tracing system becomes | 222 // Called just before the tracing system becomes |
221 // enabled. TraceLog::IsEnabled will return false at this point and trace | 223 // enabled. TraceLog::IsEnabled will return false at this point and trace |
222 // macros and methods called within the observer will deadlock. | 224 // macros and methods called within the observer will deadlock. |
223 virtual void OnTraceLogWillEnable() { } | 225 virtual void OnTraceLogWillEnable() { } |
224 | 226 |
225 // Called just before the tracing system disables. TraceLog::IsEnabled is | 227 // Called just before the tracing system disables. TraceLog::IsEnabled is |
226 // still false at this point TRACE macros will still be capturing | 228 // still false at this point TRACE macros will still be capturing |
227 // data. However, trace macros and methods called within the observer will | 229 // data. However, trace macros and methods called within the observer will |
228 // deadlock. | 230 // deadlock. |
229 virtual void OnTraceLogWillDisable() { } | 231 virtual void OnTraceLogWillDisable() { } |
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387 const unsigned char* watch_category_; | 389 const unsigned char* watch_category_; |
388 std::string watch_event_name_; | 390 std::string watch_event_name_; |
389 | 391 |
390 DISALLOW_COPY_AND_ASSIGN(TraceLog); | 392 DISALLOW_COPY_AND_ASSIGN(TraceLog); |
391 }; | 393 }; |
392 | 394 |
393 } // namespace debug | 395 } // namespace debug |
394 } // namespace base | 396 } // namespace base |
395 | 397 |
396 #endif // BASE_DEBUG_TRACE_EVENT_IMPL_H_ | 398 #endif // BASE_DEBUG_TRACE_EVENT_IMPL_H_ |
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