121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/debug/trace_event_win.h"
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#include "base/logging.h"
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#include "base/memory/singleton.h"
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#include <initguid.h> // NOLINT
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namespace base {
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namespace debug {
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using base::win::EtwEventType;
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using base::win::EtwMofEvent;
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// {3DADA31D-19EF-4dc1-B345-037927193422}
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const GUID kChromeTraceProviderName = {
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0x3dada31d, 0x19ef, 0x4dc1, 0xb3, 0x45, 0x3, 0x79, 0x27, 0x19, 0x34, 0x22 };
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// {B967AE67-BB22-49d7-9406-55D91EE1D560}
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const GUID kTraceEventClass32 = {
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0xb967ae67, 0xbb22, 0x49d7, 0x94, 0x6, 0x55, 0xd9, 0x1e, 0xe1, 0xd5, 0x60 };
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// {97BE602D-2930-4ac3-8046-B6763B631DFE}
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const GUID kTraceEventClass64 = {
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0x97be602d, 0x2930, 0x4ac3, 0x80, 0x46, 0xb6, 0x76, 0x3b, 0x63, 0x1d, 0xfe};
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TraceEventETWProvider::TraceEventETWProvider() :
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EtwTraceProvider(kChromeTraceProviderName) {
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Register();
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}
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TraceEventETWProvider* TraceEventETWProvider::GetInstance() {
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return Singleton<TraceEventETWProvider,
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StaticMemorySingletonTraits<TraceEventETWProvider> >::get();
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}
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bool TraceEventETWProvider::StartTracing() {
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return true;
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}
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void TraceEventETWProvider::TraceEvent(const char* name,
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size_t name_len,
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char type,
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const void* id,
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const char* extra,
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size_t extra_len) {
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// Make sure we don't touch NULL.
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if (name == NULL)
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name = "";
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if (extra == NULL)
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extra = "";
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EtwEventType etw_type = 0;
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switch (type) {
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case TRACE_EVENT_PHASE_BEGIN:
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etw_type = kTraceEventTypeBegin;
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break;
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case TRACE_EVENT_PHASE_END:
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etw_type = kTraceEventTypeEnd;
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break;
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case TRACE_EVENT_PHASE_INSTANT:
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etw_type = kTraceEventTypeInstant;
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break;
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default:
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NOTREACHED() << "Unknown event type";
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etw_type = kTraceEventTypeInstant;
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break;
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}
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EtwMofEvent<5> event(kTraceEventClass32,
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etw_type,
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TRACE_LEVEL_INFORMATION);
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event.SetField(0, name_len + 1, name);
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event.SetField(1, sizeof(id), &id);
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event.SetField(2, extra_len + 1, extra);
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// See whether we're to capture a backtrace.
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void* backtrace[32];
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if (enable_flags() & CAPTURE_STACK_TRACE) {
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DWORD hash = 0;
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DWORD depth = CaptureStackBackTrace(0,
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arraysize(backtrace),
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backtrace,
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&hash);
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event.SetField(3, sizeof(depth), &depth);
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event.SetField(4, sizeof(backtrace[0]) * depth, backtrace);
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}
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// Trace the event.
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Log(event.get());
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}
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void TraceEventETWProvider::Trace(const char* name,
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size_t name_len,
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char type,
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const void* id,
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const char* extra,
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size_t extra_len) {
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TraceEventETWProvider* provider = TraceEventETWProvider::GetInstance();
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if (provider && provider->IsTracing()) {
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// Compute the name & extra lengths if not supplied already.
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if (name_len == -1)
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name_len = (name == NULL) ? 0 : strlen(name);
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if (extra_len == -1)
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extra_len = (extra == NULL) ? 0 : strlen(extra);
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provider->TraceEvent(name, name_len, type, id, extra, extra_len);
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}
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}
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void TraceEventETWProvider::Resurrect() {
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StaticMemorySingletonTraits<TraceEventETWProvider>::Resurrect();
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}
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} // namespace debug
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} // namespace base
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