1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include <string.h>
20
21 #include <memory>
22
23 #include <android-base/test_utils.h>
24
25 #include "environment.h"
26 #include "event_attr.h"
27 #include "event_type.h"
28 #include "record.h"
29 #include "record_file.h"
30
31 #include "record_equal_test.h"
32
33 using namespace PerfFileFormat;
34
35 class RecordFileTest : public ::testing::Test {
36 protected:
AddEventType(const std::string & event_type_str)37 void AddEventType(const std::string& event_type_str) {
38 std::unique_ptr<EventTypeAndModifier> event_type_modifier = ParseEventType(event_type_str);
39 ASSERT_TRUE(event_type_modifier != nullptr);
40 perf_event_attr attr = CreateDefaultPerfEventAttr(event_type_modifier->event_type);
41 attr.sample_id_all = 1;
42 attrs_.push_back(std::unique_ptr<perf_event_attr>(new perf_event_attr(attr)));
43 EventAttrWithId attr_id;
44 attr_id.attr = attrs_.back().get();
45 attr_id.ids.push_back(attrs_.size()); // Fake id.
46 attr_ids_.push_back(attr_id);
47 }
48
49 TemporaryFile tmpfile_;
50 std::vector<std::unique_ptr<perf_event_attr>> attrs_;
51 std::vector<EventAttrWithId> attr_ids_;
52 };
53
TEST_F(RecordFileTest,smoke)54 TEST_F(RecordFileTest, smoke) {
55 // Write to a record file.
56 std::unique_ptr<RecordFileWriter> writer = RecordFileWriter::CreateInstance(tmpfile_.path);
57 ASSERT_TRUE(writer != nullptr);
58
59 // Write attr section.
60 AddEventType("cpu-cycles");
61 ASSERT_TRUE(writer->WriteAttrSection(attr_ids_));
62
63 // Write data section.
64 MmapRecord mmap_record(*(attr_ids_[0].attr), true, 1, 1, 0x1000, 0x2000,
65 0x3000, "mmap_record_example", attr_ids_[0].ids[0]);
66 ASSERT_TRUE(writer->WriteRecord(mmap_record));
67
68 // Write feature section.
69 ASSERT_TRUE(writer->BeginWriteFeatures(1));
70 char p[BuildId::Size()];
71 for (size_t i = 0; i < BuildId::Size(); ++i) {
72 p[i] = i;
73 }
74 BuildId build_id(p);
75 std::vector<BuildIdRecord> build_id_records;
76 build_id_records.push_back(BuildIdRecord(false, getpid(), build_id, "init"));
77 ASSERT_TRUE(writer->WriteBuildIdFeature(build_id_records));
78 ASSERT_TRUE(writer->EndWriteFeatures());
79 ASSERT_TRUE(writer->Close());
80
81 // Read from a record file.
82 std::unique_ptr<RecordFileReader> reader = RecordFileReader::CreateInstance(tmpfile_.path);
83 ASSERT_TRUE(reader != nullptr);
84 std::vector<EventAttrWithId> attrs = reader->AttrSection();
85 ASSERT_EQ(1u, attrs.size());
86 ASSERT_EQ(0, memcmp(attrs[0].attr, attr_ids_[0].attr, sizeof(perf_event_attr)));
87 ASSERT_EQ(attrs[0].ids, attr_ids_[0].ids);
88
89 // Read and check data section.
90 std::vector<std::unique_ptr<Record>> records = reader->DataSection();
91 ASSERT_EQ(1u, records.size());
92 CheckRecordEqual(mmap_record, *records[0]);
93
94 // Read and check feature section.
95 std::vector<BuildIdRecord> read_build_id_records = reader->ReadBuildIdFeature();
96 ASSERT_EQ(1u, read_build_id_records.size());
97 CheckRecordEqual(read_build_id_records[0], build_id_records[0]);
98
99 ASSERT_TRUE(reader->Close());
100 }
101
TEST_F(RecordFileTest,records_sorted_by_time)102 TEST_F(RecordFileTest, records_sorted_by_time) {
103 // Write to a record file.
104 std::unique_ptr<RecordFileWriter> writer = RecordFileWriter::CreateInstance(tmpfile_.path);
105 ASSERT_TRUE(writer != nullptr);
106
107 // Write attr section.
108 AddEventType("cpu-cycles");
109 attrs_[0]->sample_id_all = 1;
110 attrs_[0]->sample_type |= PERF_SAMPLE_TIME;
111 ASSERT_TRUE(writer->WriteAttrSection(attr_ids_));
112
113 // Write data section.
114 MmapRecord r1(*(attr_ids_[0].attr), true, 1, 1, 0x100, 0x2000, 0x3000, "mmap_record1",
115 attr_ids_[0].ids[0], 2);
116 MmapRecord r2(*(attr_ids_[0].attr), true, 1, 1, 0x100, 0x2000, 0x3000, "mmap_record1",
117 attr_ids_[0].ids[0], 1);
118 MmapRecord r3(*(attr_ids_[0].attr), true, 1, 1, 0x100, 0x2000, 0x3000, "mmap_record1",
119 attr_ids_[0].ids[0], 3);
120 ASSERT_TRUE(writer->WriteRecord(r1));
121 ASSERT_TRUE(writer->WriteRecord(r2));
122 ASSERT_TRUE(writer->WriteRecord(r3));
123 ASSERT_TRUE(writer->Close());
124
125 // Read from a record file.
126 std::unique_ptr<RecordFileReader> reader = RecordFileReader::CreateInstance(tmpfile_.path);
127 ASSERT_TRUE(reader != nullptr);
128 std::vector<std::unique_ptr<Record>> records = reader->DataSection();
129 ASSERT_EQ(3u, records.size());
130 CheckRecordEqual(r2, *records[0]);
131 CheckRecordEqual(r1, *records[1]);
132 CheckRecordEqual(r3, *records[2]);
133
134 ASSERT_TRUE(reader->Close());
135 }
136
TEST_F(RecordFileTest,record_more_than_one_attr)137 TEST_F(RecordFileTest, record_more_than_one_attr) {
138 // Write to a record file.
139 std::unique_ptr<RecordFileWriter> writer = RecordFileWriter::CreateInstance(tmpfile_.path);
140 ASSERT_TRUE(writer != nullptr);
141
142 // Write attr section.
143 AddEventType("cpu-cycles");
144 AddEventType("cpu-clock");
145 AddEventType("task-clock");
146 ASSERT_TRUE(writer->WriteAttrSection(attr_ids_));
147
148 ASSERT_TRUE(writer->Close());
149
150 // Read from a record file.
151 std::unique_ptr<RecordFileReader> reader = RecordFileReader::CreateInstance(tmpfile_.path);
152 ASSERT_TRUE(reader != nullptr);
153 std::vector<EventAttrWithId> attrs = reader->AttrSection();
154 ASSERT_EQ(3u, attrs.size());
155 for (size_t i = 0; i < attrs.size(); ++i) {
156 ASSERT_EQ(0, memcmp(attrs[i].attr, attr_ids_[i].attr, sizeof(perf_event_attr)));
157 ASSERT_EQ(attrs[i].ids, attr_ids_[i].ids);
158 }
159 }
160