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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/trace_event/trace_event_win.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/memory/singleton.h" | |
| 9 #include <initguid.h> // NOLINT | |
| 10 | |
| 11 namespace base { | |
| 12 namespace trace_event { | |
| 13 | |
| 14 using base::win::EtwEventType; | |
| 15 using base::win::EtwMofEvent; | |
| 16 | |
| 17 // {3DADA31D-19EF-4dc1-B345-037927193422} | |
| 18 const GUID kChromeTraceProviderName = { | |
| 19 0x3dada31d, | |
| 20 0x19ef, | |
| 21 0x4dc1, | |
| 22 {0xb3, 0x45, 0x3, 0x79, 0x27, 0x19, 0x34, 0x22}}; | |
| 23 | |
| 24 // {B967AE67-BB22-49d7-9406-55D91EE1D560} | |
| 25 const GUID kTraceEventClass32 = { | |
| 26 0xb967ae67, | |
| 27 0xbb22, | |
| 28 0x49d7, | |
| 29 {0x94, 0x6, 0x55, 0xd9, 0x1e, 0xe1, 0xd5, 0x60}}; | |
| 30 | |
| 31 // {97BE602D-2930-4ac3-8046-B6763B631DFE} | |
| 32 const GUID kTraceEventClass64 = { | |
| 33 0x97be602d, | |
| 34 0x2930, | |
| 35 0x4ac3, | |
| 36 {0x80, 0x46, 0xb6, 0x76, 0x3b, 0x63, 0x1d, 0xfe}}; | |
| 37 | |
| 38 TraceEventETWProvider::TraceEventETWProvider() : | |
| 39 EtwTraceProvider(kChromeTraceProviderName) { | |
| 40 Register(); | |
| 41 } | |
| 42 | |
| 43 TraceEventETWProvider* TraceEventETWProvider::GetInstance() { | |
| 44 return Singleton<TraceEventETWProvider, | |
| 45 StaticMemorySingletonTraits<TraceEventETWProvider> >::get(); | |
| 46 } | |
| 47 | |
| 48 bool TraceEventETWProvider::StartTracing() { | |
| 49 return true; | |
| 50 } | |
| 51 | |
| 52 void TraceEventETWProvider::TraceEvent(const char* name, | |
| 53 size_t name_len, | |
| 54 char type, | |
| 55 const void* id, | |
| 56 const char* extra, | |
| 57 size_t extra_len) { | |
| 58 // Make sure we don't touch NULL. | |
| 59 if (name == NULL) | |
| 60 name = ""; | |
| 61 if (extra == NULL) | |
| 62 extra = ""; | |
| 63 | |
| 64 EtwEventType etw_type = 0; | |
| 65 switch (type) { | |
| 66 case TRACE_EVENT_PHASE_BEGIN: | |
| 67 etw_type = kTraceEventTypeBegin; | |
| 68 break; | |
| 69 case TRACE_EVENT_PHASE_END: | |
| 70 etw_type = kTraceEventTypeEnd; | |
| 71 break; | |
| 72 | |
| 73 case TRACE_EVENT_PHASE_INSTANT: | |
| 74 etw_type = kTraceEventTypeInstant; | |
| 75 break; | |
| 76 | |
| 77 default: | |
| 78 NOTREACHED() << "Unknown event type"; | |
| 79 etw_type = kTraceEventTypeInstant; | |
| 80 break; | |
| 81 } | |
| 82 | |
| 83 EtwMofEvent<5> event(kTraceEventClass32, | |
| 84 etw_type, | |
| 85 TRACE_LEVEL_INFORMATION); | |
| 86 event.SetField(0, name_len + 1, name); | |
| 87 event.SetField(1, sizeof(id), &id); | |
| 88 event.SetField(2, extra_len + 1, extra); | |
| 89 | |
| 90 // These variables are declared here so that they are not out of scope when | |
| 91 // the event is logged. | |
| 92 DWORD depth; | |
| 93 void* backtrace[32]; | |
| 94 | |
| 95 // See whether we're to capture a backtrace. | |
| 96 if (enable_flags() & CAPTURE_STACK_TRACE) { | |
| 97 depth = CaptureStackBackTrace(0, | |
| 98 arraysize(backtrace), | |
| 99 backtrace, | |
| 100 NULL); | |
| 101 event.SetField(3, sizeof(depth), &depth); | |
| 102 event.SetField(4, sizeof(backtrace[0]) * depth, backtrace); | |
| 103 } | |
| 104 | |
| 105 // Trace the event. | |
| 106 Log(event.get()); | |
| 107 } | |
| 108 | |
| 109 void TraceEventETWProvider::Trace(const char* name, | |
| 110 size_t name_len, | |
| 111 char type, | |
| 112 const void* id, | |
| 113 const char* extra, | |
| 114 size_t extra_len) { | |
| 115 TraceEventETWProvider* provider = TraceEventETWProvider::GetInstance(); | |
| 116 if (provider && provider->IsTracing()) { | |
| 117 // Compute the name & extra lengths if not supplied already. | |
| 118 if (name_len == kUseStrlen) | |
| 119 name_len = (name == NULL) ? 0 : strlen(name); | |
| 120 if (extra_len == kUseStrlen) | |
| 121 extra_len = (extra == NULL) ? 0 : strlen(extra); | |
| 122 | |
| 123 provider->TraceEvent(name, name_len, type, id, extra, extra_len); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 void TraceEventETWProvider::Resurrect() { | |
| 128 StaticMemorySingletonTraits<TraceEventETWProvider>::Resurrect(); | |
| 129 } | |
| 130 | |
| 131 } // namespace trace_event | |
| 132 } // namespace base | |
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Chromium Code Reviews
Issue 1376793004:
Remove the TRACE_EVENT_*_ETW macros. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master