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 34 using namespace PerfFileFormat; 35 36 class 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 59 bool 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 83 bool 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 93 static const std::string GetFeatureName(int feature); 94 95 void 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 } 131 132 static 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 {FEAT_FILE, "file"}, 152 }; 153 auto it = feature_name_map.find(feature); 154 if (it != feature_name_map.end()) { 155 return it->second; 156 } 157 return android::base::StringPrintf("unknown_feature(%d)", feature); 158 } 159 160 void DumpRecordCommand::DumpAttrSection() { 161 std::vector<EventAttrWithId> attrs = record_file_reader_->AttrSection(); 162 for (size_t i = 0; i < attrs.size(); ++i) { 163 const auto& attr = attrs[i]; 164 printf("attr %zu:\n", i + 1); 165 DumpPerfEventAttr(*attr.attr, 1); 166 if (!attr.ids.empty()) { 167 printf(" ids:"); 168 for (const auto& id : attr.ids) { 169 printf(" %" PRId64, id); 170 } 171 printf("\n"); 172 } 173 } 174 } 175 176 void DumpRecordCommand::DumpDataSection() { 177 record_file_reader_->ReadDataSection([](std::unique_ptr<Record> record) { 178 record->Dump(); 179 return true; 180 }, false); 181 } 182 183 void DumpRecordCommand::DumpFeatureSection() { 184 std::map<int, SectionDesc> section_map = record_file_reader_->FeatureSectionDescriptors(); 185 for (const auto& pair : section_map) { 186 int feature = pair.first; 187 const auto& section = pair.second; 188 printf("feature section for %s: offset %" PRId64 ", size %" PRId64 "\n", 189 GetFeatureName(feature).c_str(), section.offset, section.size); 190 if (feature == FEAT_BUILD_ID) { 191 std::vector<BuildIdRecord> records = record_file_reader_->ReadBuildIdFeature(); 192 for (auto& r : records) { 193 r.Dump(1); 194 } 195 } else if (feature == FEAT_OSRELEASE) { 196 std::string s = record_file_reader_->ReadFeatureString(feature); 197 PrintIndented(1, "osrelease: %s\n", s.c_str()); 198 } else if (feature == FEAT_ARCH) { 199 std::string s = record_file_reader_->ReadFeatureString(feature); 200 PrintIndented(1, "arch: %s\n", s.c_str()); 201 } else if (feature == FEAT_CMDLINE) { 202 std::vector<std::string> cmdline = record_file_reader_->ReadCmdlineFeature(); 203 PrintIndented(1, "cmdline: %s\n", android::base::Join(cmdline, ' ').c_str()); 204 } else if (feature == FEAT_FILE) { 205 std::string file_path; 206 uint32_t file_type; 207 uint64_t min_vaddr; 208 std::vector<Symbol> symbols; 209 size_t read_pos = 0; 210 PrintIndented(1, "file:\n"); 211 while (record_file_reader_->ReadFileFeature(read_pos, &file_path, 212 &file_type, &min_vaddr, 213 &symbols)) { 214 PrintIndented(2, "file_path %s\n", file_path.c_str()); 215 PrintIndented(2, "file_type %s\n", DsoTypeToString(static_cast<DsoType>(file_type))); 216 PrintIndented(2, "min_vaddr 0x%" PRIx64 "\n", min_vaddr); 217 PrintIndented(2, "symbols:\n"); 218 for (const auto& symbol : symbols) { 219 PrintIndented(3, "%s [0x%" PRIx64 "-0x%" PRIx64 "]\n", symbol.DemangledName(), 220 symbol.addr, symbol.addr + symbol.len); 221 } 222 } 223 } 224 } 225 } 226 227 void RegisterDumpRecordCommand() { 228 RegisterCommand("dump", [] { return std::unique_ptr<Command>(new DumpRecordCommand); }); 229 } 230
