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Side by Side Diff: webrtc/base/event_tracer.h

Issue 2877023002: Move webrtc/{base => rtc_base} (Closed)
Patch Set: update presubmit.py and DEPS include rules Created 3 years, 5 months ago
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1 /* 1 /*
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license 4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source 5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found 6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may 7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree. 8 * be found in the AUTHORS file in the root of the source tree.
9 */ 9 */
10 10
11 // This file defines the interface for event tracing in WebRTC. 11 // This file defines the interface for event tracing in WebRTC.
12 // 12 //
13 // Event log handlers are set through SetupEventTracer(). User of this API will 13 // Event log handlers are set through SetupEventTracer(). User of this API will
14 // provide two function pointers to handle event tracing calls. 14 // provide two function pointers to handle event tracing calls.
15 // 15 //
16 // * GetCategoryEnabledPtr 16 // * GetCategoryEnabledPtr
17 // Event tracing system calls this function to determine if a particular 17 // Event tracing system calls this function to determine if a particular
18 // event category is enabled. 18 // event category is enabled.
19 // 19 //
20 // * AddTraceEventPtr 20 // * AddTraceEventPtr
21 // Adds a tracing event. It is the user's responsibility to log the data 21 // Adds a tracing event. It is the user's responsibility to log the data
22 // provided. 22 // provided.
23 // 23 //
24 // Parameters for the above two functions are described in trace_event.h. 24 // Parameters for the above two functions are described in trace_event.h.
25 25
26 #ifndef WEBRTC_BASE_EVENT_TRACER_H_ 26 #ifndef WEBRTC_BASE_EVENT_TRACER_H_
27 #define WEBRTC_BASE_EVENT_TRACER_H_ 27 #define WEBRTC_BASE_EVENT_TRACER_H_
28 28
29 #include <stdio.h>
30 29
31 namespace webrtc { 30 // This header is deprecated and is just left here temporarily during
32 31 // refactoring. See https://bugs.webrtc.org/7634 for more details.
33 typedef const unsigned char* (*GetCategoryEnabledPtr)(const char* name); 32 #include "webrtc/rtc_base/event_tracer.h"
34 typedef void (*AddTraceEventPtr)(char phase,
35 const unsigned char* category_enabled,
36 const char* name,
37 unsigned long long id,
38 int num_args,
39 const char** arg_names,
40 const unsigned char* arg_types,
41 const unsigned long long* arg_values,
42 unsigned char flags);
43
44 // User of WebRTC can call this method to setup event tracing.
45 //
46 // This method must be called before any WebRTC methods. Functions
47 // provided should be thread-safe.
48 void SetupEventTracer(
49 GetCategoryEnabledPtr get_category_enabled_ptr,
50 AddTraceEventPtr add_trace_event_ptr);
51
52 // This class defines interface for the event tracing system to call
53 // internally. Do not call these methods directly.
54 class EventTracer {
55 public:
56 static const unsigned char* GetCategoryEnabled(
57 const char* name);
58
59 static void AddTraceEvent(
60 char phase,
61 const unsigned char* category_enabled,
62 const char* name,
63 unsigned long long id,
64 int num_args,
65 const char** arg_names,
66 const unsigned char* arg_types,
67 const unsigned long long* arg_values,
68 unsigned char flags);
69 };
70
71 } // namespace webrtc
72
73 namespace rtc {
74 namespace tracing {
75 // Set up internal event tracer.
76 void SetupInternalTracer();
77 bool StartInternalCapture(const char* filename);
78 void StartInternalCaptureToFile(FILE* file);
79 void StopInternalCapture();
80 // Make sure we run this, this will tear down the internal tracing.
81 void ShutdownInternalTracer();
82 } // namespace tracing
83 } // namespace rtc
84 33
85 #endif // WEBRTC_BASE_EVENT_TRACER_H_ 34 #endif // WEBRTC_BASE_EVENT_TRACER_H_
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