FDRTraceWriterTest.cpp
6.64 KB
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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
//===- llvm/unittest/XRay/FDRTraceWriterTest.cpp ----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Test a utility that can write out XRay FDR Mode formatted trace files.
//
//===----------------------------------------------------------------------===//
#include "llvm/XRay/FDRTraceWriter.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/XRay/FDRLogBuilder.h"
#include "llvm/XRay/FDRRecords.h"
#include "llvm/XRay/Trace.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <string>
namespace llvm {
namespace xray {
namespace {
using testing::ElementsAre;
using testing::Eq;
using testing::Field;
using testing::IsEmpty;
using testing::Not;
// We want to be able to create an instance of an FDRTraceWriter and associate
// it with a stream, which could be loaded and turned into a Trace instance.
// This test writes out version 3 trace logs.
TEST(FDRTraceWriterTest, WriteToStringBufferVersion3) {
std::string Data;
raw_string_ostream OS(Data);
XRayFileHeader H;
H.Version = 3;
H.Type = 1;
H.ConstantTSC = true;
H.NonstopTSC = true;
H.CycleFrequency = 3e9;
FDRTraceWriter Writer(OS, H);
auto L = LogBuilder()
.add<BufferExtents>(80)
.add<NewBufferRecord>(1)
.add<WallclockRecord>(1, 1)
.add<PIDRecord>(1)
.add<NewCPUIDRecord>(1, 2)
.add<FunctionRecord>(RecordTypes::ENTER, 1, 1)
.add<FunctionRecord>(RecordTypes::EXIT, 1, 100)
.consume();
for (auto &P : L)
ASSERT_FALSE(errorToBool(P->apply(Writer)));
OS.flush();
// Then from here we load the Trace file.
DataExtractor DE(Data, sys::IsLittleEndianHost, 8);
auto TraceOrErr = loadTrace(DE, true);
if (!TraceOrErr)
FAIL() << TraceOrErr.takeError();
auto &Trace = TraceOrErr.get();
ASSERT_THAT(Trace, Not(IsEmpty()));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::FuncId, Eq(1)),
Field(&XRayRecord::FuncId, Eq(1))));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::TId, Eq(1u)),
Field(&XRayRecord::TId, Eq(1u))));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::PId, Eq(1u)),
Field(&XRayRecord::PId, Eq(1u))));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::CPU, Eq(1u)),
Field(&XRayRecord::CPU, Eq(1u))));
EXPECT_THAT(Trace,
ElementsAre(Field(&XRayRecord::Type, Eq(RecordTypes::ENTER)),
Field(&XRayRecord::Type, Eq(RecordTypes::EXIT))));
}
// This version is almost exactly the same as above, except writing version 2
// logs, without the PID records.
TEST(FDRTraceWriterTest, WriteToStringBufferVersion2) {
std::string Data;
raw_string_ostream OS(Data);
XRayFileHeader H;
H.Version = 2;
H.Type = 1;
H.ConstantTSC = true;
H.NonstopTSC = true;
H.CycleFrequency = 3e9;
FDRTraceWriter Writer(OS, H);
auto L = LogBuilder()
.add<BufferExtents>(64)
.add<NewBufferRecord>(1)
.add<WallclockRecord>(1, 1)
.add<NewCPUIDRecord>(1, 2)
.add<FunctionRecord>(RecordTypes::ENTER, 1, 1)
.add<FunctionRecord>(RecordTypes::EXIT, 1, 100)
.consume();
for (auto &P : L)
ASSERT_FALSE(errorToBool(P->apply(Writer)));
OS.flush();
// Then from here we load the Trace file.
DataExtractor DE(Data, sys::IsLittleEndianHost, 8);
auto TraceOrErr = loadTrace(DE, true);
if (!TraceOrErr)
FAIL() << TraceOrErr.takeError();
auto &Trace = TraceOrErr.get();
ASSERT_THAT(Trace, Not(IsEmpty()));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::FuncId, Eq(1)),
Field(&XRayRecord::FuncId, Eq(1))));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::TId, Eq(1u)),
Field(&XRayRecord::TId, Eq(1u))));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::CPU, Eq(1u)),
Field(&XRayRecord::CPU, Eq(1u))));
EXPECT_THAT(Trace,
ElementsAre(Field(&XRayRecord::Type, Eq(RecordTypes::ENTER)),
Field(&XRayRecord::Type, Eq(RecordTypes::EXIT))));
}
// This covers version 1 of the log, without a BufferExtents record but has an
// explicit EndOfBuffer record.
TEST(FDRTraceWriterTest, WriteToStringBufferVersion1) {
std::string Data;
raw_string_ostream OS(Data);
XRayFileHeader H;
H.Version = 1;
H.Type = 1;
H.ConstantTSC = true;
H.NonstopTSC = true;
H.CycleFrequency = 3e9;
// Write the size of buffers out, arbitrarily it's 4k.
constexpr uint64_t BufferSize = 4096;
std::memcpy(H.FreeFormData, reinterpret_cast<const char *>(&BufferSize),
sizeof(BufferSize));
FDRTraceWriter Writer(OS, H);
OS.flush();
// Ensure that at this point the Data buffer has the file header serialized
// size.
ASSERT_THAT(Data.size(), Eq(32u));
auto L = LogBuilder()
.add<NewBufferRecord>(1)
.add<WallclockRecord>(1, 1)
.add<NewCPUIDRecord>(1, 2)
.add<FunctionRecord>(RecordTypes::ENTER, 1, 1)
.add<FunctionRecord>(RecordTypes::EXIT, 1, 100)
.add<EndBufferRecord>()
.consume();
for (auto &P : L)
ASSERT_FALSE(errorToBool(P->apply(Writer)));
// We need to pad the buffer with 4016 (4096 - 80) bytes of zeros.
OS.write_zeros(4016);
OS.flush();
// For version 1 of the log, we need the whole buffer to be the size of the
// file header plus 32.
ASSERT_THAT(Data.size(), Eq(BufferSize + 32));
// Then from here we load the Trace file.
DataExtractor DE(Data, sys::IsLittleEndianHost, 8);
auto TraceOrErr = loadTrace(DE, true);
if (!TraceOrErr)
FAIL() << TraceOrErr.takeError();
auto &Trace = TraceOrErr.get();
ASSERT_THAT(Trace, Not(IsEmpty()));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::FuncId, Eq(1)),
Field(&XRayRecord::FuncId, Eq(1))));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::TId, Eq(1u)),
Field(&XRayRecord::TId, Eq(1u))));
EXPECT_THAT(Trace, ElementsAre(Field(&XRayRecord::CPU, Eq(1u)),
Field(&XRayRecord::CPU, Eq(1u))));
EXPECT_THAT(Trace,
ElementsAre(Field(&XRayRecord::Type, Eq(RecordTypes::ENTER)),
Field(&XRayRecord::Type, Eq(RecordTypes::EXIT))));
}
} // namespace
} // namespace xray
} // namespace llvm