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 <inttypes.h> 18 19#include <map> 20#include <string> 21#include <vector> 22 23#include <android-base/logging.h> 24#include <android-base/stringprintf.h> 25#include <android-base/strings.h> 26 27#include "command.h" 28#include "event_attr.h" 29#include "perf_regs.h" 30#include "record.h" 31#include "record_file.h" 32#include "utils.h" 33 34using namespace PerfFileFormat; 35 36class DumpRecordCommand : public Command { 37 public: 38 DumpRecordCommand() 39 : Command("dump", "dump perf record file", 40 "Usage: simpleperf dumprecord [options] [perf_record_file]\n" 41 " Dump different parts of a perf record file. Default file is perf.data.\n"), 42 record_filename_("perf.data"), record_file_arch_(GetBuildArch()) { 43 } 44 45 bool Run(const std::vector<std::string>& args); 46 47 private: 48 bool ParseOptions(const std::vector<std::string>& args); 49 void DumpFileHeader(); 50 void DumpAttrSection(); 51 void DumpDataSection(); 52 void DumpFeatureSection(); 53 54 std::string record_filename_; 55 std::unique_ptr<RecordFileReader> record_file_reader_; 56 ArchType record_file_arch_; 57}; 58 59bool DumpRecordCommand::Run(const std::vector<std::string>& args) { 60 if (!ParseOptions(args)) { 61 return false; 62 } 63 record_file_reader_ = RecordFileReader::CreateInstance(record_filename_); 64 if (record_file_reader_ == nullptr) { 65 return false; 66 } 67 std::string arch = record_file_reader_->ReadFeatureString(FEAT_ARCH); 68 if (!arch.empty()) { 69 record_file_arch_ = GetArchType(arch); 70 if (record_file_arch_ == ARCH_UNSUPPORTED) { 71 return false; 72 } 73 } 74 ScopedCurrentArch scoped_arch(record_file_arch_); 75 DumpFileHeader(); 76 DumpAttrSection(); 77 DumpDataSection(); 78 DumpFeatureSection(); 79 80 return true; 81} 82 83bool DumpRecordCommand::ParseOptions(const std::vector<std::string>& args) { 84 if (args.size() == 1) { 85 record_filename_ = args[0]; 86 } else if (args.size() > 1) { 87 ReportUnknownOption(args, 1); 88 return false; 89 } 90 return true; 91} 92 93static const std::string GetFeatureName(int feature); 94 95void DumpRecordCommand::DumpFileHeader() { 96 const FileHeader& header = record_file_reader_->FileHeader(); 97 printf("magic: "); 98 for (size_t i = 0; i < 8; ++i) { 99 printf("%c", header.magic[i]); 100 } 101 printf("\n"); 102 printf("header_size: %" PRId64 "\n", header.header_size); 103 if (header.header_size != sizeof(header)) { 104 PLOG(WARNING) << "record file header size " << header.header_size 105 << "doesn't match expected header size " << sizeof(header); 106 } 107 printf("attr_size: %" PRId64 "\n", header.attr_size); 108 if (header.attr_size != sizeof(FileAttr)) { 109 PLOG(WARNING) << "record file attr size " << header.attr_size 110 << " doesn't match expected attr size " << sizeof(FileAttr); 111 } 112 printf("attrs[file section]: offset %" PRId64 ", size %" PRId64 "\n", header.attrs.offset, 113 header.attrs.size); 114 printf("data[file section]: offset %" PRId64 ", size %" PRId64 "\n", header.data.offset, 115 header.data.size); 116 printf("event_types[file section]: offset %" PRId64 ", size %" PRId64 "\n", 117 header.event_types.offset, header.event_types.size); 118 119 std::vector<int> features; 120 for (size_t i = 0; i < FEAT_MAX_NUM; ++i) { 121 size_t j = i / 8; 122 size_t k = i % 8; 123 if ((header.features[j] & (1 << k)) != 0) { 124 features.push_back(i); 125 } 126 } 127 for (auto& feature : features) { 128 printf("feature: %s\n", GetFeatureName(feature).c_str()); 129 } 130} 131 132static const std::string GetFeatureName(int feature) { 133 static std::map<int, std::string> feature_name_map = { 134 {FEAT_TRACING_DATA, "tracing_data"}, 135 {FEAT_BUILD_ID, "build_id"}, 136 {FEAT_HOSTNAME, "hostname"}, 137 {FEAT_OSRELEASE, "osrelease"}, 138 {FEAT_VERSION, "version"}, 139 {FEAT_ARCH, "arch"}, 140 {FEAT_NRCPUS, "nrcpus"}, 141 {FEAT_CPUDESC, "cpudesc"}, 142 {FEAT_CPUID, "cpuid"}, 143 {FEAT_TOTAL_MEM, "total_mem"}, 144 {FEAT_CMDLINE, "cmdline"}, 145 {FEAT_EVENT_DESC, "event_desc"}, 146 {FEAT_CPU_TOPOLOGY, "cpu_topology"}, 147 {FEAT_NUMA_TOPOLOGY, "numa_topology"}, 148 {FEAT_BRANCH_STACK, "branch_stack"}, 149 {FEAT_PMU_MAPPINGS, "pmu_mappings"}, 150 {FEAT_GROUP_DESC, "group_desc"}, 151 }; 152 auto it = feature_name_map.find(feature); 153 if (it != feature_name_map.end()) { 154 return it->second; 155 } 156 return android::base::StringPrintf("unknown_feature(%d)", feature); 157} 158 159void DumpRecordCommand::DumpAttrSection() { 160 const std::vector<FileAttr>& attrs = record_file_reader_->AttrSection(); 161 for (size_t i = 0; i < attrs.size(); ++i) { 162 const auto& attr = attrs[i]; 163 printf("file_attr %zu:\n", i + 1); 164 DumpPerfEventAttr(attr.attr, 1); 165 printf(" ids[file_section]: offset %" PRId64 ", size %" PRId64 "\n", attr.ids.offset, 166 attr.ids.size); 167 std::vector<uint64_t> ids; 168 if (!record_file_reader_->ReadIdsForAttr(attr, &ids)) { 169 return; 170 } 171 if (!ids.empty()) { 172 printf(" ids:"); 173 for (const auto& id : ids) { 174 printf(" %" PRId64, id); 175 } 176 printf("\n"); 177 } 178 } 179} 180 181void DumpRecordCommand::DumpDataSection() { 182 record_file_reader_->ReadDataSection([](std::unique_ptr<Record> record) { 183 record->Dump(); 184 return true; 185 }, false); 186} 187 188void DumpRecordCommand::DumpFeatureSection() { 189 std::map<int, SectionDesc> section_map = record_file_reader_->FeatureSectionDescriptors(); 190 for (const auto& pair : section_map) { 191 int feature = pair.first; 192 const auto& section = pair.second; 193 printf("feature section for %s: offset %" PRId64 ", size %" PRId64 "\n", 194 GetFeatureName(feature).c_str(), section.offset, section.size); 195 if (feature == FEAT_BUILD_ID) { 196 std::vector<BuildIdRecord> records = record_file_reader_->ReadBuildIdFeature(); 197 for (auto& r : records) { 198 r.Dump(1); 199 } 200 } else if (feature == FEAT_OSRELEASE) { 201 std::string s = record_file_reader_->ReadFeatureString(feature); 202 PrintIndented(1, "osrelease: %s\n", s.c_str()); 203 } else if (feature == FEAT_ARCH) { 204 std::string s = record_file_reader_->ReadFeatureString(feature); 205 PrintIndented(1, "arch: %s\n", s.c_str()); 206 } else if (feature == FEAT_CMDLINE) { 207 std::vector<std::string> cmdline = record_file_reader_->ReadCmdlineFeature(); 208 PrintIndented(1, "cmdline: %s\n", android::base::Join(cmdline, ' ').c_str()); 209 } 210 } 211} 212 213void RegisterDumpRecordCommand() { 214 RegisterCommand("dump", [] { return std::unique_ptr<Command>(new DumpRecordCommand); }); 215} 216