| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "record.h" |
| |
| #include <inttypes.h> |
| #include <unordered_map> |
| |
| #include <base/logging.h> |
| #include <base/stringprintf.h> |
| |
| #include "environment.h" |
| #include "utils.h" |
| |
| static std::string RecordTypeToString(int record_type) { |
| static std::unordered_map<int, std::string> record_type_names = { |
| {PERF_RECORD_MMAP, "mmap"}, |
| {PERF_RECORD_LOST, "lost"}, |
| {PERF_RECORD_COMM, "comm"}, |
| {PERF_RECORD_EXIT, "exit"}, |
| {PERF_RECORD_THROTTLE, "throttle"}, |
| {PERF_RECORD_UNTHROTTLE, "unthrottle"}, |
| {PERF_RECORD_FORK, "fork"}, |
| {PERF_RECORD_READ, "read"}, |
| {PERF_RECORD_SAMPLE, "sample"}, |
| {PERF_RECORD_BUILD_ID, "build_id"}, |
| }; |
| |
| auto it = record_type_names.find(record_type); |
| if (it != record_type_names.end()) { |
| return it->second; |
| } |
| return android::base::StringPrintf("unknown(%d)", record_type); |
| } |
| |
| template <class T> |
| void MoveFromBinaryFormat(T& data, const char*& p) { |
| data = *reinterpret_cast<const T*>(p); |
| p += sizeof(T); |
| } |
| |
| template <class T> |
| void MoveToBinaryFormat(const T& data, char*& p) { |
| *reinterpret_cast<T*>(p) = data; |
| p += sizeof(T); |
| } |
| |
| SampleId::SampleId() { |
| memset(this, 0, sizeof(SampleId)); |
| } |
| |
| // Return sample_id size in binary format. |
| size_t SampleId::CreateContent(const perf_event_attr& attr) { |
| sample_id_all = attr.sample_id_all; |
| sample_type = attr.sample_type; |
| // Other data are not necessary. TODO: Set missing SampleId data. |
| size_t size = 0; |
| if (sample_id_all) { |
| if (sample_type & PERF_SAMPLE_TID) { |
| size += sizeof(PerfSampleTidType); |
| } |
| if (sample_type & PERF_SAMPLE_TIME) { |
| size += sizeof(PerfSampleTimeType); |
| } |
| if (sample_type & PERF_SAMPLE_ID) { |
| size += sizeof(PerfSampleIdType); |
| } |
| if (sample_type & PERF_SAMPLE_STREAM_ID) { |
| size += sizeof(PerfSampleStreamIdType); |
| } |
| if (sample_type & PERF_SAMPLE_CPU) { |
| size += sizeof(PerfSampleCpuType); |
| } |
| } |
| return size; |
| } |
| |
| void SampleId::ReadFromBinaryFormat(const perf_event_attr& attr, const char* p, const char* end) { |
| sample_id_all = attr.sample_id_all; |
| sample_type = attr.sample_type; |
| if (sample_id_all) { |
| if (sample_type & PERF_SAMPLE_TID) { |
| MoveFromBinaryFormat(tid_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_TIME) { |
| MoveFromBinaryFormat(time_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_ID) { |
| MoveFromBinaryFormat(id_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_STREAM_ID) { |
| MoveFromBinaryFormat(stream_id_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_CPU) { |
| MoveFromBinaryFormat(cpu_data, p); |
| } |
| // TODO: Add parsing of PERF_SAMPLE_IDENTIFIER. |
| } |
| CHECK_LE(p, end); |
| if (p < end) { |
| LOG(DEBUG) << "Record SampleId part has " << end - p << " bytes left\n"; |
| } |
| } |
| |
| void SampleId::WriteToBinaryFormat(char*& p) const { |
| if (sample_id_all) { |
| if (sample_type & PERF_SAMPLE_TID) { |
| MoveToBinaryFormat(tid_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_TIME) { |
| MoveToBinaryFormat(time_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_ID) { |
| MoveToBinaryFormat(id_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_STREAM_ID) { |
| MoveToBinaryFormat(stream_id_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_CPU) { |
| MoveToBinaryFormat(cpu_data, p); |
| } |
| } |
| } |
| |
| void SampleId::Dump(size_t indent) const { |
| if (sample_id_all) { |
| if (sample_type & PERF_SAMPLE_TID) { |
| PrintIndented(indent, "sample_id: pid %u, tid %u\n", tid_data.pid, tid_data.tid); |
| } |
| if (sample_type & PERF_SAMPLE_TIME) { |
| PrintIndented(indent, "sample_id: time %" PRId64 "\n", time_data.time); |
| } |
| if (sample_type & PERF_SAMPLE_ID) { |
| PrintIndented(indent, "sample_id: stream_id %" PRId64 "\n", id_data.id); |
| } |
| if (sample_type & PERF_SAMPLE_STREAM_ID) { |
| PrintIndented(indent, "sample_id: stream_id %" PRId64 "\n", stream_id_data.stream_id); |
| } |
| if (sample_type & PERF_SAMPLE_CPU) { |
| PrintIndented(indent, "sample_id: cpu %u, res %u\n", cpu_data.cpu, cpu_data.res); |
| } |
| } |
| } |
| |
| Record::Record() { |
| memset(&header, 0, sizeof(header)); |
| } |
| |
| Record::Record(const perf_event_header* pheader) { |
| header = *pheader; |
| } |
| |
| void Record::Dump(size_t indent) const { |
| PrintIndented(indent, "record %s: type %u, misc %u, size %u\n", |
| RecordTypeToString(header.type).c_str(), header.type, header.misc, header.size); |
| DumpData(indent + 1); |
| sample_id.Dump(indent + 1); |
| } |
| |
| MmapRecord::MmapRecord(const perf_event_attr& attr, const perf_event_header* pheader) |
| : Record(pheader) { |
| const char* p = reinterpret_cast<const char*>(pheader + 1); |
| const char* end = reinterpret_cast<const char*>(pheader) + pheader->size; |
| MoveFromBinaryFormat(data, p); |
| filename = p; |
| p += ALIGN(filename.size() + 1, 8); |
| CHECK_LE(p, end); |
| sample_id.ReadFromBinaryFormat(attr, p, end); |
| } |
| |
| void MmapRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "pid %u, tid %u, addr %p, len 0x%" PRIx64 "\n", data.pid, data.tid, |
| reinterpret_cast<void*>(data.addr), data.len); |
| PrintIndented(indent, "pgoff 0x%" PRIx64 ", filename %s\n", data.pgoff, filename.c_str()); |
| } |
| |
| std::vector<char> MmapRecord::BinaryFormat() const { |
| std::vector<char> buf(header.size); |
| char* p = buf.data(); |
| MoveToBinaryFormat(header, p); |
| MoveToBinaryFormat(data, p); |
| strcpy(p, filename.c_str()); |
| p += ALIGN(filename.size() + 1, 8); |
| sample_id.WriteToBinaryFormat(p); |
| return buf; |
| } |
| |
| CommRecord::CommRecord(const perf_event_attr& attr, const perf_event_header* pheader) |
| : Record(pheader) { |
| const char* p = reinterpret_cast<const char*>(pheader + 1); |
| const char* end = reinterpret_cast<const char*>(pheader) + pheader->size; |
| MoveFromBinaryFormat(data, p); |
| comm = p; |
| p += ALIGN(strlen(p) + 1, 8); |
| CHECK_LE(p, end); |
| sample_id.ReadFromBinaryFormat(attr, p, end); |
| } |
| |
| void CommRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "pid %u, tid %u, comm %s\n", data.pid, data.tid, comm.c_str()); |
| } |
| |
| std::vector<char> CommRecord::BinaryFormat() const { |
| std::vector<char> buf(header.size); |
| char* p = buf.data(); |
| MoveToBinaryFormat(header, p); |
| MoveToBinaryFormat(data, p); |
| strcpy(p, comm.c_str()); |
| p += ALIGN(comm.size() + 1, 8); |
| sample_id.WriteToBinaryFormat(p); |
| return buf; |
| } |
| |
| ExitRecord::ExitRecord(const perf_event_attr& attr, const perf_event_header* pheader) |
| : Record(pheader) { |
| const char* p = reinterpret_cast<const char*>(pheader + 1); |
| const char* end = reinterpret_cast<const char*>(pheader) + pheader->size; |
| MoveFromBinaryFormat(data, p); |
| CHECK_LE(p, end); |
| sample_id.ReadFromBinaryFormat(attr, p, end); |
| } |
| |
| void ExitRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "pid %u, ppid %u, tid %u, ptid %u\n", data.pid, data.ppid, data.tid, |
| data.ptid); |
| } |
| |
| SampleRecord::SampleRecord(const perf_event_attr& attr, const perf_event_header* pheader) |
| : Record(pheader) { |
| const char* p = reinterpret_cast<const char*>(pheader + 1); |
| const char* end = reinterpret_cast<const char*>(pheader) + pheader->size; |
| sample_type = attr.sample_type; |
| |
| if (sample_type & PERF_SAMPLE_IP) { |
| MoveFromBinaryFormat(ip_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_TID) { |
| MoveFromBinaryFormat(tid_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_TIME) { |
| MoveFromBinaryFormat(time_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_ADDR) { |
| MoveFromBinaryFormat(addr_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_ID) { |
| MoveFromBinaryFormat(id_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_STREAM_ID) { |
| MoveFromBinaryFormat(stream_id_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_CPU) { |
| MoveFromBinaryFormat(cpu_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_PERIOD) { |
| MoveFromBinaryFormat(period_data, p); |
| } |
| // TODO: Add parsing of other PERF_SAMPLE_*. |
| CHECK_LE(p, end); |
| if (p < end) { |
| LOG(DEBUG) << "Record has " << end - p << " bytes left\n"; |
| } |
| } |
| |
| void SampleRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "sample_type: 0x%" PRIx64 "\n", sample_type); |
| if (sample_type & PERF_SAMPLE_IP) { |
| PrintIndented(indent, "ip %p\n", reinterpret_cast<void*>(ip_data.ip)); |
| } |
| if (sample_type & PERF_SAMPLE_TID) { |
| PrintIndented(indent, "pid %u, tid %u\n", tid_data.pid, tid_data.tid); |
| } |
| if (sample_type & PERF_SAMPLE_TIME) { |
| PrintIndented(indent, "time %" PRId64 "\n", time_data.time); |
| } |
| if (sample_type & PERF_SAMPLE_ADDR) { |
| PrintIndented(indent, "addr %p\n", reinterpret_cast<void*>(addr_data.addr)); |
| } |
| if (sample_type & PERF_SAMPLE_ID) { |
| PrintIndented(indent, "id %" PRId64 "\n", id_data.id); |
| } |
| if (sample_type & PERF_SAMPLE_STREAM_ID) { |
| PrintIndented(indent, "stream_id %" PRId64 "\n", stream_id_data.stream_id); |
| } |
| if (sample_type & PERF_SAMPLE_CPU) { |
| PrintIndented(indent, "cpu %u, res %u\n", cpu_data.cpu, cpu_data.res); |
| } |
| if (sample_type & PERF_SAMPLE_PERIOD) { |
| PrintIndented(indent, "period %" PRId64 "\n", period_data.period); |
| } |
| } |
| |
| BuildIdRecord::BuildIdRecord(const perf_event_header* pheader) : Record(pheader) { |
| const char* p = reinterpret_cast<const char*>(pheader + 1); |
| const char* end = reinterpret_cast<const char*>(pheader) + pheader->size; |
| MoveFromBinaryFormat(pid, p); |
| std::copy_n(p, build_id.size(), build_id.begin()); |
| p += ALIGN(build_id.size(), 8); |
| filename = p; |
| p += ALIGN(filename.size() + 1, 64); |
| CHECK_EQ(p, end); |
| } |
| |
| void BuildIdRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "pid %u\n", pid); |
| PrintIndented(indent, "build_id 0x"); |
| for (auto& c : build_id) { |
| printf("%02x", c); |
| } |
| printf("\n"); |
| PrintIndented(indent, "filename %s\n", filename.c_str()); |
| } |
| |
| std::vector<char> BuildIdRecord::BinaryFormat() const { |
| std::vector<char> buf(header.size); |
| char* p = buf.data(); |
| MoveToBinaryFormat(header, p); |
| MoveToBinaryFormat(pid, p); |
| memcpy(p, build_id.data(), build_id.size()); |
| p += ALIGN(build_id.size(), 8); |
| strcpy(p, filename.c_str()); |
| p += ALIGN(filename.size() + 1, 64); |
| return buf; |
| } |
| |
| std::unique_ptr<const Record> ReadRecordFromBuffer(const perf_event_attr& attr, |
| const perf_event_header* pheader) { |
| switch (pheader->type) { |
| case PERF_RECORD_MMAP: |
| return std::unique_ptr<const Record>(new MmapRecord(attr, pheader)); |
| case PERF_RECORD_COMM: |
| return std::unique_ptr<const Record>(new CommRecord(attr, pheader)); |
| case PERF_RECORD_EXIT: |
| return std::unique_ptr<const Record>(new ExitRecord(attr, pheader)); |
| case PERF_RECORD_SAMPLE: |
| return std::unique_ptr<const Record>(new SampleRecord(attr, pheader)); |
| default: |
| return std::unique_ptr<const Record>(new Record(pheader)); |
| } |
| } |
| |
| MmapRecord CreateMmapRecord(const perf_event_attr& attr, bool in_kernel, uint32_t pid, uint32_t tid, |
| uint64_t addr, uint64_t len, uint64_t pgoff, |
| const std::string& filename) { |
| MmapRecord record; |
| record.header.type = PERF_RECORD_MMAP; |
| record.header.misc = (in_kernel ? PERF_RECORD_MISC_KERNEL : PERF_RECORD_MISC_USER); |
| record.data.pid = pid; |
| record.data.tid = tid; |
| record.data.addr = addr; |
| record.data.len = len; |
| record.data.pgoff = pgoff; |
| record.filename = filename; |
| size_t sample_id_size = record.sample_id.CreateContent(attr); |
| record.header.size = sizeof(record.header) + sizeof(record.data) + |
| ALIGN(record.filename.size() + 1, 8) + sample_id_size; |
| return record; |
| } |
| |
| CommRecord CreateCommRecord(const perf_event_attr& attr, uint32_t pid, uint32_t tid, |
| const std::string& comm) { |
| CommRecord record; |
| record.header.type = PERF_RECORD_COMM; |
| record.header.misc = 0; |
| record.data.pid = pid; |
| record.data.tid = tid; |
| record.comm = comm; |
| size_t sample_id_size = record.sample_id.CreateContent(attr); |
| record.header.size = sizeof(record.header) + sizeof(record.data) + |
| ALIGN(record.comm.size() + 1, 8) + sample_id_size; |
| return record; |
| } |
| |
| BuildIdRecord CreateBuildIdRecord(bool in_kernel, pid_t pid, const BuildId& build_id, |
| const std::string& filename) { |
| BuildIdRecord record; |
| record.header.type = PERF_RECORD_BUILD_ID; |
| record.header.misc = (in_kernel ? PERF_RECORD_MISC_KERNEL : PERF_RECORD_MISC_USER); |
| record.pid = pid; |
| record.build_id = build_id; |
| record.filename = filename; |
| record.header.size = sizeof(record.header) + sizeof(record.pid) + |
| ALIGN(record.build_id.size(), 8) + ALIGN(filename.size() + 1, 64); |
| return record; |
| } |