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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 #include "base/debug/trace_event_win.h" | |
| 5 | |
| 6 #include "base/logging.h" | |
| 7 #include "base/memory/singleton.h" | |
| 8 #include <initguid.h> // NOLINT | |
| 9 | |
| 10 namespace base { | |
| 11 namespace debug { | |
| 12 | |
| 13 using base::win::EtwEventType; | |
| 14 using base::win::EtwMofEvent; | |
| 15 | |
| 16 // {3DADA31D-19EF-4dc1-B345-037927193422} | |
| 17 const GUID kChromeTraceProviderName = { | |
| 18 0x3dada31d, 0x19ef, 0x4dc1, 0xb3, 0x45, 0x3, 0x79, 0x27, 0x19, 0x34, 0x22 }; | |
| 19 | |
| 20 // {B967AE67-BB22-49d7-9406-55D91EE1D560} | |
| 21 const GUID kTraceEventClass32 = { | |
| 22 0xb967ae67, 0xbb22, 0x49d7, 0x94, 0x6, 0x55, 0xd9, 0x1e, 0xe1, 0xd5, 0x60 }; | |
| 23 | |
| 24 // {97BE602D-2930-4ac3-8046-B6763B631DFE} | |
| 25 const GUID kTraceEventClass64 = { | |
| 26 0x97be602d, 0x2930, 0x4ac3, 0x80, 0x46, 0xb6, 0x76, 0x3b, 0x63, 0x1d, 0xfe}; | |
| 27 | |
| 28 | |
| 29 TraceEventETWProvider::TraceEventETWProvider() : | |
| 30 EtwTraceProvider(kChromeTraceProviderName) { | |
| 31 Register(); | |
| 32 } | |
| 33 | |
| 34 TraceEventETWProvider* TraceEventETWProvider::GetInstance() { | |
| 35 return Singleton<TraceEventETWProvider, | |
| 36 StaticMemorySingletonTraits<TraceEventETWProvider> >::get(); | |
| 37 } | |
| 38 | |
| 39 bool TraceEventETWProvider::StartTracing() { | |
| 40 return true; | |
| 41 } | |
| 42 | |
| 43 void TraceEventETWProvider::TraceEvent(const char* name, | |
| 44 size_t name_len, | |
| 45 char type, | |
| 46 const void* id, | |
| 47 const char* extra, | |
| 48 size_t extra_len) { | |
| 49 // Make sure we don't touch NULL. | |
| 50 if (name == NULL) | |
| 51 name = ""; | |
| 52 if (extra == NULL) | |
| 53 extra = ""; | |
| 54 | |
| 55 EtwEventType etw_type = 0; | |
| 56 switch (type) { | |
| 57 case TRACE_EVENT_PHASE_BEGIN: | |
| 58 etw_type = kTraceEventTypeBegin; | |
| 59 break; | |
| 60 case TRACE_EVENT_PHASE_END: | |
| 61 etw_type = kTraceEventTypeEnd; | |
| 62 break; | |
| 63 | |
| 64 case TRACE_EVENT_PHASE_INSTANT: | |
| 65 etw_type = kTraceEventTypeInstant; | |
| 66 break; | |
| 67 | |
| 68 default: | |
| 69 NOTREACHED() << "Unknown event type"; | |
| 70 etw_type = kTraceEventTypeInstant; | |
| 71 break; | |
| 72 } | |
| 73 | |
| 74 EtwMofEvent<5> event(kTraceEventClass32, | |
| 75 etw_type, | |
| 76 TRACE_LEVEL_INFORMATION); | |
| 77 event.SetField(0, name_len + 1, name); | |
| 78 event.SetField(1, sizeof(id), &id); | |
| 79 event.SetField(2, extra_len + 1, extra); | |
| 80 | |
| 81 // These variables are declared here so that they are not out of scope when | |
| 82 // the event is logged. | |
| 83 DWORD depth; | |
| 84 void* backtrace[32]; | |
| 85 | |
| 86 // See whether we're to capture a backtrace. | |
| 87 if (enable_flags() & CAPTURE_STACK_TRACE) { | |
| 88 depth = CaptureStackBackTrace(0, | |
| 89 arraysize(backtrace), | |
| 90 backtrace, | |
| 91 NULL); | |
| 92 event.SetField(3, sizeof(depth), &depth); | |
| 93 event.SetField(4, sizeof(backtrace[0]) * depth, backtrace); | |
| 94 } | |
| 95 | |
| 96 // Trace the event. | |
| 97 Log(event.get()); | |
| 98 } | |
| 99 | |
| 100 void TraceEventETWProvider::Trace(const char* name, | |
| 101 size_t name_len, | |
| 102 char type, | |
| 103 const void* id, | |
| 104 const char* extra, | |
| 105 size_t extra_len) { | |
| 106 TraceEventETWProvider* provider = TraceEventETWProvider::GetInstance(); | |
| 107 if (provider && provider->IsTracing()) { | |
| 108 // Compute the name & extra lengths if not supplied already. | |
| 109 if (name_len == kUseStrlen) | |
| 110 name_len = (name == NULL) ? 0 : strlen(name); | |
| 111 if (extra_len == kUseStrlen) | |
| 112 extra_len = (extra == NULL) ? 0 : strlen(extra); | |
| 113 | |
| 114 provider->TraceEvent(name, name_len, type, id, extra, extra_len); | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 void TraceEventETWProvider::Resurrect() { | |
| 119 StaticMemorySingletonTraits<TraceEventETWProvider>::Resurrect(); | |
| 120 } | |
| 121 | |
| 122 } // namespace debug | |
| 123 } // namespace base | |
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Chromium Code Reviews
Issue 885443002:
Roll Chrome into Mojo. (Closed)
Base URL: https://github.com/domokit/mojo.git@master