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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 #ifndef CONTENT_PUBLIC_BROWSER_TRACE_CONTROLLER_H_ | 5 #ifndef CONTENT_PUBLIC_BROWSER_TRACE_CONTROLLER_H_ |
6 #define CONTENT_PUBLIC_BROWSER_TRACE_CONTROLLER_H_ | 6 #define CONTENT_PUBLIC_BROWSER_TRACE_CONTROLLER_H_ |
7 | 7 |
8 #include "content/common/content_export.h" | 8 #include "content/common/content_export.h" |
9 | 9 |
10 namespace content { | 10 namespace content { |
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61 // When the TraceBufferPercentFull value is determined, | 61 // When the TraceBufferPercentFull value is determined, |
62 // subscriber->OnTraceBufferPercentFullReply is called. | 62 // subscriber->OnTraceBufferPercentFullReply is called. |
63 // When any child process reaches 100% full, the TraceController will end | 63 // When any child process reaches 100% full, the TraceController will end |
64 // tracing, and call TraceSubscriber::OnEndTracingComplete. | 64 // tracing, and call TraceSubscriber::OnEndTracingComplete. |
65 // GetTraceBufferPercentFullAsync fails in the following conditions: | 65 // GetTraceBufferPercentFullAsync fails in the following conditions: |
66 // trace is ending or disabled; | 66 // trace is ending or disabled; |
67 // a previous call to GetTraceBufferPercentFullAsync is pending; or | 67 // a previous call to GetTraceBufferPercentFullAsync is pending; or |
68 // the caller is not the current subscriber. | 68 // the caller is not the current subscriber. |
69 virtual bool GetTraceBufferPercentFullAsync(TraceSubscriber* subscriber) = 0; | 69 virtual bool GetTraceBufferPercentFullAsync(TraceSubscriber* subscriber) = 0; |
70 | 70 |
| 71 // |subscriber->OnEventWatchNotification()| will be called every time the |
| 72 // given event occurs on any process. |
| 73 virtual bool SetWatchEvent(TraceSubscriber* subscriber, |
| 74 const std::string& category_name, |
| 75 const std::string& event_name) = 0; |
| 76 |
| 77 // Cancel the watch event. If tracing is enabled, this may race with the |
| 78 // watch event notification firing. |
| 79 virtual bool CancelWatchEvent(TraceSubscriber* subscriber) = 0; |
| 80 |
71 // Cancel the subscriber so that it will not be called when EndTracingAsync is | 81 // Cancel the subscriber so that it will not be called when EndTracingAsync is |
72 // acked by all child processes. This will also call EndTracingAsync | 82 // acked by all child processes. This will also call EndTracingAsync |
73 // internally if necessary. | 83 // internally if necessary. |
74 // Safe to call even if caller is not the current subscriber. | 84 // Safe to call even if caller is not the current subscriber. |
75 virtual void CancelSubscriber(TraceSubscriber* subscriber) = 0; | 85 virtual void CancelSubscriber(TraceSubscriber* subscriber) = 0; |
76 | 86 |
77 protected: | 87 protected: |
78 virtual ~TraceController() {} | 88 virtual ~TraceController() {} |
79 }; | 89 }; |
80 | 90 |
81 } // namespace content | 91 } // namespace content |
82 | 92 |
83 #endif // CONTENT_PUBLIC_BROWSER_TRACE_CONTROLLER_H_ | 93 #endif // CONTENT_PUBLIC_BROWSER_TRACE_CONTROLLER_H_ |
84 | 94 |
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