simpleperf/record_file_test.cpp

   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 #include "environment.h"
  21 #include "event_attr.h"
  22 #include "event_fd.h"
  23 #include "event_type.h"
  24 #include "record.h"
  25 #include "record_file.h"
  26
  27 #include "record_equal_test.h"
  28
  29 using namespace PerfFileFormat;
  30
  31 class RecordFileTest : public ::testing::Test {
  32  protected:
  33   virtual void SetUp() {
  34     filename = "temporary.record_file";
  35     const EventType* event_type = EventTypeFactory::FindEventTypeByName("cpu-cycles");
  36     ASSERT_TRUE(event_type != nullptr);
  37     event_attr = CreateDefaultPerfEventAttr(*event_type);
  38     std::unique_ptr<EventFd> event_fd = EventFd::OpenEventFileForProcess(event_attr, getpid());
  39     ASSERT_TRUE(event_fd != nullptr);
  40     event_fds.push_back(std::move(event_fd));
  41   }
  42
  43   std::string filename;
  44   perf_event_attr event_attr;
  45   std::vector<std::unique_ptr<EventFd>> event_fds;
  46 };
  47
  48 TEST_F(RecordFileTest, smoke) {
  49   // Write to a record file.
  50   std::unique_ptr<RecordFileWriter> writer =
  51       RecordFileWriter::CreateInstance(filename, event_attr, event_fds);
  52   ASSERT_TRUE(writer != nullptr);
  53
  54   // Write data section.
  55   MmapRecord mmap_record =
  56       CreateMmapRecord(event_attr, true, 1, 1, 0x1000, 0x2000, 0x3000, "mmap_record_example");
  57   ASSERT_TRUE(writer->WriteData(mmap_record.BinaryFormat()));
  58
  59   // Write feature section.
  60   ASSERT_TRUE(writer->WriteFeatureHeader(1));
  61   BuildId build_id;
  62   for (size_t i = 0; i < build_id.size(); ++i) {
  63     build_id[i] = i;
  64   }
  65   BuildIdRecord build_id_record = CreateBuildIdRecord(false, getpid(), build_id, "init");
  66   ASSERT_TRUE(writer->WriteBuildIdFeature({build_id_record}));
  67   ASSERT_TRUE(writer->Close());
  68
  69   // Read from a record file.
  70   std::unique_ptr<RecordFileReader> reader = RecordFileReader::CreateInstance(filename);
  71   ASSERT_TRUE(reader != nullptr);
  72   const FileHeader* file_header = reader->FileHeader();
  73   ASSERT_TRUE(file_header != nullptr);
  74   std::vector<const FileAttr*> attrs = reader->AttrSection();
  75   ASSERT_EQ(1u, attrs.size());
  76   ASSERT_EQ(0, memcmp(&attrs[0]->attr, &event_attr, sizeof(perf_event_attr)));
  77   std::vector<uint64_t> ids = reader->IdsForAttr(attrs[0]);
  78   ASSERT_EQ(1u, ids.size());
  79
  80   // Read and check data section.
  81   std::vector<std::unique_ptr<const Record>> records = reader->DataSection();
  82   ASSERT_EQ(1u, records.size());
  83   ASSERT_EQ(mmap_record.header.type, records[0]->header.type);
  84   CheckRecordEqual(mmap_record, *records[0]);
  85
  86   // Read and check feature section.
  87   ASSERT_TRUE(file_header->features[FEAT_BUILD_ID / 8] & (1 << (FEAT_BUILD_ID % 8)));
  88   std::vector<SectionDesc> sections = reader->FeatureSectionDescriptors();
  89   ASSERT_EQ(1u, sections.size());
  90   const perf_event_header* header =
  91       reinterpret_cast<const perf_event_header*>(reader->DataAtOffset(sections[0].offset));
  92   ASSERT_TRUE(header != nullptr);
  93   ASSERT_EQ(sections[0].size, header->size);
  94   CheckRecordEqual(build_id_record, BuildIdRecord(header));
  95
  96   ASSERT_TRUE(reader->Close());
  97 }