1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Implementation of a Windows event trace controller class.
#include "base/event_trace_controller_win.h"
#include "base/logging.h"
EtwTraceController::EtwTraceController() : session_(NULL) {
}
EtwTraceController::~EtwTraceController() {
Stop(NULL);
}
HRESULT EtwTraceController::Start(const wchar_t* session_name,
EtwTraceProperties* prop) {
DCHECK(NULL == session_ && session_name_.empty());
EtwTraceProperties ignore;
if (prop == NULL)
prop = &ignore;
HRESULT hr = Start(session_name, prop, &session_);
if (SUCCEEDED(hr))
session_name_ = session_name;
return hr;
}
HRESULT EtwTraceController::StartFileSession(const wchar_t* session_name,
const wchar_t* logfile_path, bool realtime) {
DCHECK(NULL == session_ && session_name_.empty());
EtwTraceProperties prop;
prop.SetLoggerFileName(logfile_path);
EVENT_TRACE_PROPERTIES& p = *prop.get();
p.Wnode.ClientContext = 1; // QPC timer accuracy.
p.LogFileMode = EVENT_TRACE_FILE_MODE_SEQUENTIAL; // Sequential log.
if (realtime)
p.LogFileMode |= EVENT_TRACE_REAL_TIME_MODE;
p.MaximumFileSize = 100; // 100M file size.
p.FlushTimer = 30; // 30 seconds flush lag.
return Start(session_name, &prop);
}
HRESULT EtwTraceController::StartRealtimeSession(const wchar_t* session_name,
size_t buffer_size) {
DCHECK(NULL == session_ && session_name_.empty());
EtwTraceProperties prop;
EVENT_TRACE_PROPERTIES& p = *prop.get();
p.LogFileMode = EVENT_TRACE_REAL_TIME_MODE | EVENT_TRACE_USE_PAGED_MEMORY;
p.FlushTimer = 1; // flush every second.
p.BufferSize = 16; // 16 K buffers.
p.LogFileNameOffset = 0;
return Start(session_name, &prop);
}
HRESULT EtwTraceController::EnableProvider(REFGUID provider, UCHAR level,
ULONG flags) {
ULONG error = ::EnableTrace(TRUE, flags, level, &provider, session_);
return HRESULT_FROM_WIN32(error);
}
HRESULT EtwTraceController::DisableProvider(REFGUID provider) {
ULONG error = ::EnableTrace(FALSE, 0, 0, &provider, session_);
return HRESULT_FROM_WIN32(error);
}
HRESULT EtwTraceController::Stop(EtwTraceProperties* properties) {
EtwTraceProperties ignore;
if (properties == NULL)
properties = &ignore;
ULONG error = ::ControlTrace(session_, NULL, properties->get(),
EVENT_TRACE_CONTROL_STOP);
if (ERROR_SUCCESS != error)
return HRESULT_FROM_WIN32(error);
session_ = NULL;
session_name_.clear();
return S_OK;
}
HRESULT EtwTraceController::Flush(EtwTraceProperties* properties) {
EtwTraceProperties ignore;
if (properties == NULL)
properties = &ignore;
ULONG error = ::ControlTrace(session_, NULL, properties->get(),
EVENT_TRACE_CONTROL_FLUSH);
if (ERROR_SUCCESS != error)
return HRESULT_FROM_WIN32(error);
return S_OK;
}
HRESULT EtwTraceController::Start(const wchar_t* session_name,
EtwTraceProperties* properties, TRACEHANDLE* session_handle) {
ULONG err = ::StartTrace(session_handle, session_name, properties->get());
return HRESULT_FROM_WIN32(err);
}
HRESULT EtwTraceController::Query(const wchar_t* session_name,
EtwTraceProperties* properties) {
ULONG err = ::ControlTrace(NULL, session_name, properties->get(),
EVENT_TRACE_CONTROL_QUERY);
return HRESULT_FROM_WIN32(err);
};
HRESULT EtwTraceController::Update(const wchar_t* session_name,
EtwTraceProperties* properties) {
ULONG err = ::ControlTrace(NULL, session_name, properties->get(),
EVENT_TRACE_CONTROL_UPDATE);
return HRESULT_FROM_WIN32(err);
}
HRESULT EtwTraceController::Stop(const wchar_t* session_name,
EtwTraceProperties* properties) {
ULONG err = ::ControlTrace(NULL, session_name, properties->get(),
EVENT_TRACE_CONTROL_STOP);
return HRESULT_FROM_WIN32(err);
}
HRESULT EtwTraceController::Flush(const wchar_t* session_name,
EtwTraceProperties* properties) {
ULONG err = ::ControlTrace(NULL, session_name, properties->get(),
EVENT_TRACE_CONTROL_FLUSH);
return HRESULT_FROM_WIN32(err);
}
|
