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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 #include "base/trace_event_win.h" | |
5 | |
6 #include "base/logging.h" | |
7 #include "base/singleton.h" | |
8 #include <initguid.h> // NOLINT | |
9 | |
10 namespace base { | |
11 | |
12 // {3DADA31D-19EF-4dc1-B345-037927193422} | |
13 const GUID kChromeTraceProviderName = { | |
14 0x3dada31d, 0x19ef, 0x4dc1, 0xb3, 0x45, 0x3, 0x79, 0x27, 0x19, 0x34, 0x22 }; | |
15 | |
16 // {B967AE67-BB22-49d7-9406-55D91EE1D560} | |
17 const GUID kTraceEventClass32 = { | |
18 0xb967ae67, 0xbb22, 0x49d7, 0x94, 0x6, 0x55, 0xd9, 0x1e, 0xe1, 0xd5, 0x60 }; | |
19 | |
20 // {97BE602D-2930-4ac3-8046-B6763B631DFE} | |
21 const GUID kTraceEventClass64 = { | |
22 0x97be602d, 0x2930, 0x4ac3, 0x80, 0x46, 0xb6, 0x76, 0x3b, 0x63, 0x1d, 0xfe}; | |
23 | |
24 | |
25 TraceLog::TraceLog() : EtwTraceProvider(base::kChromeTraceProviderName) { | |
26 Register(); | |
27 } | |
28 | |
29 TraceLog* TraceLog::Get() { | |
30 return Singleton<TraceLog, StaticMemorySingletonTraits<TraceLog>>::get(); | |
31 } | |
32 | |
33 bool TraceLog::StartTracing() { | |
34 return true; | |
35 } | |
36 | |
37 void TraceLog::TraceEvent(const char* name, | |
38 size_t name_len, | |
39 base::TraceLog::EventType type, | |
40 const void* id, | |
41 const char* extra, | |
42 size_t extra_len) { | |
43 // Make sure we don't touch NULL. | |
44 if (name == NULL) | |
45 name = ""; | |
46 if (extra == NULL) | |
47 extra = ""; | |
48 | |
49 EtwEventType etw_type = 0; | |
50 switch (type) { | |
51 case base::TraceLog::EVENT_BEGIN: | |
52 etw_type = base::kTraceEventTypeBegin; | |
53 break; | |
54 case base::TraceLog::EVENT_END: | |
55 etw_type = base::kTraceEventTypeEnd; | |
56 break; | |
57 | |
58 case base::TraceLog::EVENT_INSTANT: | |
59 etw_type = base::kTraceEventTypeInstant; | |
60 break; | |
61 | |
62 default: | |
63 NOTREACHED() << "Unknown event type"; | |
64 etw_type = base::kTraceEventTypeInstant; | |
65 break; | |
66 } | |
67 | |
68 EtwMofEvent<5> event(base::kTraceEventClass32, | |
69 etw_type, | |
70 TRACE_LEVEL_INFORMATION); | |
71 event.SetField(0, name_len + 1, name); | |
72 event.SetField(1, sizeof(id), &id); | |
73 event.SetField(2, extra_len + 1, extra); | |
74 | |
75 // See whether we're to capture a backtrace. | |
76 void* backtrace[32]; | |
77 if (enable_flags() & base::CAPTURE_STACK_TRACE) { | |
78 DWORD hash = 0; | |
79 DWORD depth = CaptureStackBackTrace(0, | |
80 arraysize(backtrace), | |
81 backtrace, | |
82 &hash); | |
83 event.SetField(3, sizeof(depth), &depth); | |
84 event.SetField(4, sizeof(backtrace[0]) * depth, backtrace); | |
85 } | |
86 | |
87 // Trace the event. | |
88 Log(event.get()); | |
89 } | |
90 | |
91 void TraceLog::Trace(const char* name, | |
92 size_t name_len, | |
93 EventType type, | |
94 const void* id, | |
95 const char* extra, | |
96 size_t extra_len) { | |
97 TraceLog* provider = TraceLog::Get(); | |
98 if (provider && provider->IsTracing()) { | |
99 // Compute the name & extra lengths if not supplied already. | |
100 if (name_len == -1) | |
101 name_len = (name == NULL) ? 0 : strlen(name); | |
102 if (extra_len == -1) | |
103 extra_len = (extra == NULL) ? 0 : strlen(extra); | |
104 | |
105 provider->TraceEvent(name, name_len, type, id, extra, extra_len); | |
106 } | |
107 } | |
108 | |
109 void TraceLog::Resurrect() { | |
110 StaticMemorySingletonTraits<TraceLog>::Resurrect(); | |
111 } | |
112 | |
113 } // namespace base | |
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