| /* |
| * 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 <algorithm> |
| #include <unordered_map> |
| |
| #include <android-base/logging.h> |
| #include <android-base/stringprintf.h> |
| |
| #include "dso.h" |
| #include "perf_regs.h" |
| #include "tracing.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"}, |
| {PERF_RECORD_MMAP2, "mmap2"}, |
| {PERF_RECORD_TRACING_DATA, "tracing_data"}, |
| {SIMPLE_PERF_RECORD_KERNEL_SYMBOL, "kernel_symbol"}, |
| {SIMPLE_PERF_RECORD_DSO, "dso"}, |
| {SIMPLE_PERF_RECORD_SYMBOL, "symbol"}, |
| {SIMPLE_PERF_RECORD_EVENT_ID, "event_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 <> |
| void MoveToBinaryFormat(const RecordHeader& data, char*& p) { |
| data.MoveToBinaryFormat(p); |
| } |
| |
| SampleId::SampleId() { memset(this, 0, sizeof(SampleId)); } |
| |
| // Return sample_id size in binary format. |
| size_t SampleId::CreateContent(const perf_event_attr& attr, uint64_t event_id) { |
| sample_id_all = attr.sample_id_all; |
| sample_type = attr.sample_type; |
| id_data.id = event_id; |
| // Other data are not necessary. TODO: Set missing SampleId data. |
| 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); |
| } |
| if (sample_type & PERF_SAMPLE_IDENTIFIER) { |
| MoveFromBinaryFormat(id_data, p); |
| } |
| } |
| 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 | PERF_SAMPLE_IDENTIFIER)) { |
| PrintIndented(indent, "sample_id: 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); |
| } |
| } |
| } |
| |
| size_t SampleId::Size() const { |
| 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); |
| } |
| if (sample_type & PERF_SAMPLE_IDENTIFIER) { |
| size += sizeof(PerfSampleIdType); |
| } |
| } |
| return size; |
| } |
| |
| Record::Record(Record&& other) { |
| header = other.header; |
| sample_id = other.sample_id; |
| binary_ = other.binary_; |
| own_binary_ = other.own_binary_; |
| other.binary_ = nullptr; |
| other.own_binary_ = false; |
| } |
| |
| void Record::Dump(size_t indent) const { |
| PrintIndented(indent, "record %s: type %u, misc %u, size %u\n", |
| RecordTypeToString(type()).c_str(), type(), misc(), size()); |
| DumpData(indent + 1); |
| sample_id.Dump(indent + 1); |
| } |
| |
| uint64_t Record::Timestamp() const { return sample_id.time_data.time; } |
| uint32_t Record::Cpu() const { return sample_id.cpu_data.cpu; } |
| uint64_t Record::Id() const { return sample_id.id_data.id; } |
| |
| void Record::UpdateBinary(char* new_binary) { |
| if (own_binary_) { |
| delete[] binary_; |
| } |
| own_binary_ = true; |
| binary_ = new_binary; |
| } |
| |
| MmapRecord::MmapRecord(const perf_event_attr& attr, char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| data = reinterpret_cast<const MmapRecordDataType*>(p); |
| p += sizeof(*data); |
| filename = p; |
| p += Align(strlen(filename) + 1, 8); |
| CHECK_LE(p, end); |
| sample_id.ReadFromBinaryFormat(attr, p, end); |
| } |
| |
| MmapRecord::MmapRecord(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, |
| uint64_t event_id, uint64_t time) { |
| SetTypeAndMisc(PERF_RECORD_MMAP, |
| in_kernel ? PERF_RECORD_MISC_KERNEL : PERF_RECORD_MISC_USER); |
| sample_id.CreateContent(attr, event_id); |
| sample_id.time_data.time = time; |
| MmapRecordDataType data; |
| data.pid = pid; |
| data.tid = tid; |
| data.addr = addr; |
| data.len = len; |
| data.pgoff = pgoff; |
| SetDataAndFilename(data, filename); |
| } |
| |
| void MmapRecord::SetDataAndFilename(const MmapRecordDataType& data, |
| const std::string& filename) { |
| SetSize(header_size() + sizeof(data) + Align(filename.size() + 1, 8) + |
| sample_id.Size()); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| this->data = reinterpret_cast<MmapRecordDataType*>(p); |
| MoveToBinaryFormat(data, p); |
| this->filename = p; |
| strcpy(p, filename.c_str()); |
| p += Align(filename.size() + 1, 8); |
| sample_id.WriteToBinaryFormat(p); |
| UpdateBinary(new_binary); |
| } |
| |
| void MmapRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, |
| "pid %u, tid %u, addr 0x%" PRIx64 ", len 0x%" PRIx64 "\n", |
| data->pid, data->tid, data->addr, data->len); |
| PrintIndented(indent, "pgoff 0x%" PRIx64 ", filename %s\n", data->pgoff, |
| filename); |
| } |
| |
| Mmap2Record::Mmap2Record(const perf_event_attr& attr, char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| data = reinterpret_cast<const Mmap2RecordDataType*>(p); |
| p += sizeof(*data); |
| filename = p; |
| p += Align(strlen(filename) + 1, 8); |
| CHECK_LE(p, end); |
| sample_id.ReadFromBinaryFormat(attr, p, end); |
| } |
| |
| void Mmap2Record::SetDataAndFilename(const Mmap2RecordDataType& data, |
| const std::string& filename) { |
| SetSize(header_size() + sizeof(data) + Align(filename.size() + 1, 8) + |
| sample_id.Size()); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| this->data = reinterpret_cast<Mmap2RecordDataType*>(p); |
| MoveToBinaryFormat(data, p); |
| this->filename = p; |
| strcpy(p, filename.c_str()); |
| p += Align(filename.size() + 1, 8); |
| sample_id.WriteToBinaryFormat(p); |
| UpdateBinary(new_binary); |
| } |
| |
| void Mmap2Record::DumpData(size_t indent) const { |
| PrintIndented(indent, |
| "pid %u, tid %u, addr 0x%" PRIx64 ", len 0x%" PRIx64 "\n", |
| data->pid, data->tid, data->addr, data->len); |
| PrintIndented(indent, "pgoff 0x" PRIx64 ", maj %u, min %u, ino %" PRId64 |
| ", ino_generation %" PRIu64 "\n", |
| data->pgoff, data->maj, data->min, data->ino, |
| data->ino_generation); |
| PrintIndented(indent, "prot %u, flags %u, filenames %s\n", data->prot, |
| data->flags, filename); |
| } |
| |
| CommRecord::CommRecord(const perf_event_attr& attr, char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| data = reinterpret_cast<const CommRecordDataType*>(p); |
| p += sizeof(*data); |
| comm = p; |
| p += Align(strlen(p) + 1, 8); |
| CHECK_LE(p, end); |
| sample_id.ReadFromBinaryFormat(attr, p, end); |
| } |
| |
| CommRecord::CommRecord(const perf_event_attr& attr, uint32_t pid, uint32_t tid, |
| const std::string& comm, uint64_t event_id, uint64_t time) { |
| SetTypeAndMisc(PERF_RECORD_COMM, 0); |
| CommRecordDataType data; |
| data.pid = pid; |
| data.tid = tid; |
| size_t sample_id_size = sample_id.CreateContent(attr, event_id); |
| sample_id.time_data.time = time; |
| SetSize(header_size() + sizeof(data) + Align(comm.size() + 1, 8) + |
| sample_id_size); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| this->data = reinterpret_cast<CommRecordDataType*>(p); |
| MoveToBinaryFormat(data, p); |
| this->comm = p; |
| strcpy(p, comm.c_str()); |
| p += Align(comm.size() + 1, 8); |
| sample_id.WriteToBinaryFormat(p); |
| UpdateBinary(new_binary); |
| } |
| |
| void CommRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "pid %u, tid %u, comm %s\n", data->pid, data->tid, |
| comm); |
| } |
| |
| ExitOrForkRecord::ExitOrForkRecord(const perf_event_attr& attr, char* p) |
| : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| data = reinterpret_cast<const ExitOrForkRecordDataType*>(p); |
| p += sizeof(*data); |
| CHECK_LE(p, end); |
| sample_id.ReadFromBinaryFormat(attr, p, end); |
| } |
| |
| void ExitOrForkRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "pid %u, ppid %u, tid %u, ptid %u\n", data->pid, |
| data->ppid, data->tid, data->ptid); |
| } |
| |
| ForkRecord::ForkRecord(const perf_event_attr& attr, uint32_t pid, uint32_t tid, |
| uint32_t ppid, uint32_t ptid, uint64_t event_id) { |
| SetTypeAndMisc(PERF_RECORD_FORK, 0); |
| ExitOrForkRecordDataType data; |
| data.pid = pid; |
| data.ppid = ppid; |
| data.tid = tid; |
| data.ptid = ptid; |
| data.time = 0; |
| size_t sample_id_size = sample_id.CreateContent(attr, event_id); |
| SetSize(header_size() + sizeof(data) + sample_id_size); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| this->data = reinterpret_cast<ExitOrForkRecordDataType*>(p); |
| MoveToBinaryFormat(data, p); |
| sample_id.WriteToBinaryFormat(p); |
| UpdateBinary(new_binary); |
| } |
| |
| LostRecord::LostRecord(const perf_event_attr& attr, char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| MoveFromBinaryFormat(id, p); |
| MoveFromBinaryFormat(lost, p); |
| CHECK_LE(p, end); |
| sample_id.ReadFromBinaryFormat(attr, p, end); |
| } |
| |
| void LostRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "id %" PRIu64 ", lost %" PRIu64 "\n", id, lost); |
| } |
| |
| SampleRecord::SampleRecord(const perf_event_attr& attr, char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| sample_type = attr.sample_type; |
| |
| // Set a default id value to report correctly even if ID is not recorded. |
| id_data.id = 0; |
| if (sample_type & PERF_SAMPLE_IDENTIFIER) { |
| MoveFromBinaryFormat(id_data, p); |
| } |
| 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); |
| } |
| if (sample_type & PERF_SAMPLE_CALLCHAIN) { |
| MoveFromBinaryFormat(callchain_data.ip_nr, p); |
| callchain_data.ips = reinterpret_cast<uint64_t*>(p); |
| p += callchain_data.ip_nr * sizeof(uint64_t); |
| } |
| if (sample_type & PERF_SAMPLE_RAW) { |
| MoveFromBinaryFormat(raw_data.size, p); |
| raw_data.data = p; |
| p += raw_data.size; |
| } |
| if (sample_type & PERF_SAMPLE_BRANCH_STACK) { |
| MoveFromBinaryFormat(branch_stack_data.stack_nr, p); |
| branch_stack_data.stack = reinterpret_cast<BranchStackItemType*>(p); |
| p += branch_stack_data.stack_nr * sizeof(BranchStackItemType); |
| } |
| if (sample_type & PERF_SAMPLE_REGS_USER) { |
| MoveFromBinaryFormat(regs_user_data.abi, p); |
| if (regs_user_data.abi == 0) { |
| regs_user_data.reg_mask = 0; |
| } else { |
| regs_user_data.reg_mask = attr.sample_regs_user; |
| size_t bit_nr = 0; |
| for (size_t i = 0; i < 64; ++i) { |
| if ((regs_user_data.reg_mask >> i) & 1) { |
| bit_nr++; |
| } |
| } |
| regs_user_data.reg_nr = bit_nr; |
| regs_user_data.regs = reinterpret_cast<uint64_t*>(p); |
| p += bit_nr * sizeof(uint64_t); |
| } |
| } |
| if (sample_type & PERF_SAMPLE_STACK_USER) { |
| MoveFromBinaryFormat(stack_user_data.size, p); |
| if (stack_user_data.size == 0) { |
| stack_user_data.dyn_size = 0; |
| } else { |
| stack_user_data.data = p; |
| p += stack_user_data.size; |
| MoveFromBinaryFormat(stack_user_data.dyn_size, p); |
| } |
| } |
| // TODO: Add parsing of other PERF_SAMPLE_*. |
| CHECK_LE(p, end); |
| if (p < end) { |
| LOG(DEBUG) << "Record has " << end - p << " bytes left\n"; |
| } |
| } |
| |
| SampleRecord::SampleRecord(const perf_event_attr& attr, uint64_t id, |
| uint64_t ip, uint32_t pid, uint32_t tid, |
| uint64_t time, uint32_t cpu, uint64_t period, |
| const std::vector<uint64_t>& ips) { |
| SetTypeAndMisc(PERF_RECORD_SAMPLE, PERF_RECORD_MISC_USER); |
| sample_type = attr.sample_type; |
| CHECK_EQ(0u, sample_type & ~(PERF_SAMPLE_IP | PERF_SAMPLE_TID |
| | PERF_SAMPLE_TIME | PERF_SAMPLE_ID | PERF_SAMPLE_CPU |
| | PERF_SAMPLE_PERIOD | PERF_SAMPLE_CALLCHAIN | PERF_SAMPLE_REGS_USER |
| | PERF_SAMPLE_STACK_USER)); |
| ip_data.ip = ip; |
| tid_data.pid = pid; |
| tid_data.tid = tid; |
| time_data.time = time; |
| id_data.id = id; |
| cpu_data.cpu = cpu; |
| cpu_data.res = 0; |
| period_data.period = period; |
| callchain_data.ip_nr = ips.size(); |
| raw_data.size = 0; |
| branch_stack_data.stack_nr = 0; |
| regs_user_data.abi = 0; |
| regs_user_data.reg_mask = 0; |
| stack_user_data.size = 0; |
| |
| uint32_t size = header_size(); |
| if (sample_type & PERF_SAMPLE_IP) { |
| size += sizeof(ip_data); |
| } |
| if (sample_type & PERF_SAMPLE_TID) { |
| size += sizeof(tid_data); |
| } |
| if (sample_type & PERF_SAMPLE_TIME) { |
| size += sizeof(time_data); |
| } |
| if (sample_type & PERF_SAMPLE_ID) { |
| size += sizeof(id_data); |
| } |
| if (sample_type & PERF_SAMPLE_CPU) { |
| size += sizeof(cpu_data); |
| } |
| if (sample_type & PERF_SAMPLE_PERIOD) { |
| size += sizeof(period_data); |
| } |
| if (sample_type & PERF_SAMPLE_CALLCHAIN) { |
| size += sizeof(uint64_t) * (ips.size() + 1); |
| } |
| if (sample_type & PERF_SAMPLE_REGS_USER) { |
| size += sizeof(uint64_t); |
| } |
| if (sample_type & PERF_SAMPLE_STACK_USER) { |
| size += sizeof(uint64_t); |
| } |
| |
| SetSize(size); |
| char* new_binary = new char[size]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| if (sample_type & PERF_SAMPLE_IP) { |
| MoveToBinaryFormat(ip_data, p); |
| } |
| 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_CPU) { |
| MoveToBinaryFormat(cpu_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_PERIOD) { |
| MoveToBinaryFormat(period_data, p); |
| } |
| if (sample_type & PERF_SAMPLE_CALLCHAIN) { |
| MoveToBinaryFormat(callchain_data.ip_nr, p); |
| callchain_data.ips = reinterpret_cast<uint64_t*>(p); |
| MoveToBinaryFormat(ips.data(), ips.size(), p); |
| } |
| if (sample_type & PERF_SAMPLE_REGS_USER) { |
| MoveToBinaryFormat(regs_user_data.abi, p); |
| } |
| if (sample_type & PERF_SAMPLE_STACK_USER) { |
| MoveToBinaryFormat(stack_user_data.size, p); |
| } |
| CHECK_EQ(p, new_binary + size); |
| UpdateBinary(new_binary); |
| } |
| |
| void SampleRecord::ReplaceRegAndStackWithCallChain( |
| const std::vector<uint64_t>& ips) { |
| uint32_t size_added_in_callchain = sizeof(uint64_t) * (ips.size() + 1); |
| uint32_t size_reduced_in_reg_stack = |
| regs_user_data.reg_nr * sizeof(uint64_t) + stack_user_data.size + |
| sizeof(uint64_t); |
| CHECK_LE(size_added_in_callchain, size_reduced_in_reg_stack); |
| uint32_t size_reduced = size_reduced_in_reg_stack - size_added_in_callchain; |
| SetSize(size() - size_reduced); |
| char* p = binary_; |
| MoveToBinaryFormat(header, p); |
| p = (stack_user_data.data + stack_user_data.size + sizeof(uint64_t)) - |
| (size_reduced_in_reg_stack - size_added_in_callchain); |
| stack_user_data.size = 0; |
| regs_user_data.abi = 0; |
| p -= sizeof(uint64_t); |
| *reinterpret_cast<uint64_t*>(p) = stack_user_data.size; |
| p -= sizeof(uint64_t); |
| *reinterpret_cast<uint64_t*>(p) = regs_user_data.abi; |
| if (sample_type & PERF_SAMPLE_BRANCH_STACK) { |
| p -= branch_stack_data.stack_nr * sizeof(BranchStackItemType); |
| memmove(p, branch_stack_data.stack, |
| branch_stack_data.stack_nr * sizeof(BranchStackItemType)); |
| p -= sizeof(uint64_t); |
| *reinterpret_cast<uint64_t*>(p) = branch_stack_data.stack_nr; |
| } |
| if (sample_type & PERF_SAMPLE_RAW) { |
| p -= raw_data.size; |
| memmove(p, raw_data.data, raw_data.size); |
| p -= sizeof(uint32_t); |
| *reinterpret_cast<uint32_t*>(p) = raw_data.size; |
| } |
| p -= ips.size() * sizeof(uint64_t); |
| memcpy(p, ips.data(), ips.size() * sizeof(uint64_t)); |
| p -= sizeof(uint64_t); |
| *reinterpret_cast<uint64_t*>(p) = PERF_CONTEXT_USER; |
| p -= sizeof(uint64_t) * (callchain_data.ip_nr); |
| callchain_data.ips = reinterpret_cast<uint64_t*>(p); |
| callchain_data.ip_nr += ips.size() + 1; |
| p -= sizeof(uint64_t); |
| *reinterpret_cast<uint64_t*>(p) = callchain_data.ip_nr; |
| } |
| |
| size_t SampleRecord::ExcludeKernelCallChain() { |
| size_t user_callchain_length = 0u; |
| if (sample_type & PERF_SAMPLE_CALLCHAIN) { |
| size_t i; |
| for (i = 0; i < callchain_data.ip_nr; ++i) { |
| if (callchain_data.ips[i] == PERF_CONTEXT_USER) { |
| i++; |
| if (i < callchain_data.ip_nr) { |
| ip_data.ip = callchain_data.ips[i]; |
| if (sample_type & PERF_SAMPLE_IP) { |
| *reinterpret_cast<uint64_t*>(binary_ + header_size()) = ip_data.ip; |
| } |
| header.misc = (header.misc & ~PERF_RECORD_MISC_KERNEL) | PERF_RECORD_MISC_USER; |
| reinterpret_cast<perf_event_header*>(binary_)->misc = header.misc; |
| } |
| break; |
| } else { |
| callchain_data.ips[i] = PERF_CONTEXT_USER; |
| } |
| } |
| user_callchain_length = callchain_data.ip_nr - i; |
| } |
| return user_callchain_length; |
| } |
| |
| 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 | PERF_SAMPLE_IDENTIFIER)) { |
| 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); |
| } |
| if (sample_type & PERF_SAMPLE_CALLCHAIN) { |
| PrintIndented(indent, "callchain nr=%" PRIu64 "\n", callchain_data.ip_nr); |
| for (uint64_t i = 0; i < callchain_data.ip_nr; ++i) { |
| PrintIndented(indent + 1, "0x%" PRIx64 "\n", callchain_data.ips[i]); |
| } |
| } |
| if (sample_type & PERF_SAMPLE_RAW) { |
| PrintIndented(indent, "raw size=%zu\n", raw_data.size); |
| const uint32_t* data = reinterpret_cast<const uint32_t*>(raw_data.data); |
| size_t size = raw_data.size / sizeof(uint32_t); |
| for (size_t i = 0; i < size; ++i) { |
| PrintIndented(indent + 1, "0x%08x (%zu)\n", data[i], data[i]); |
| } |
| } |
| if (sample_type & PERF_SAMPLE_BRANCH_STACK) { |
| PrintIndented(indent, "branch_stack nr=%" PRIu64 "\n", |
| branch_stack_data.stack_nr); |
| for (uint64_t i = 0; i < branch_stack_data.stack_nr; ++i) { |
| auto& item = branch_stack_data.stack[i]; |
| PrintIndented(indent + 1, "from 0x%" PRIx64 ", to 0x%" PRIx64 |
| ", flags 0x%" PRIx64 "\n", |
| item.from, item.to, item.flags); |
| } |
| } |
| if (sample_type & PERF_SAMPLE_REGS_USER) { |
| PrintIndented(indent, "user regs: abi=%" PRId64 "\n", regs_user_data.abi); |
| for (size_t i = 0, pos = 0; i < 64; ++i) { |
| if ((regs_user_data.reg_mask >> i) & 1) { |
| PrintIndented( |
| indent + 1, "reg (%s) 0x%016" PRIx64 "\n", |
| GetRegName(i, ScopedCurrentArch::GetCurrentArch()).c_str(), |
| regs_user_data.regs[pos++]); |
| } |
| } |
| } |
| if (sample_type & PERF_SAMPLE_STACK_USER) { |
| PrintIndented(indent, "user stack: size %zu dyn_size %" PRIu64 "\n", |
| stack_user_data.size, stack_user_data.dyn_size); |
| const uint64_t* p = reinterpret_cast<const uint64_t*>(stack_user_data.data); |
| const uint64_t* end = p + (stack_user_data.size / sizeof(uint64_t)); |
| while (p < end) { |
| PrintIndented(indent + 1, ""); |
| for (size_t i = 0; i < 4 && p < end; ++i, ++p) { |
| printf(" %016" PRIx64, *p); |
| } |
| printf("\n"); |
| } |
| printf("\n"); |
| } |
| } |
| |
| uint64_t SampleRecord::Timestamp() const { return time_data.time; } |
| uint32_t SampleRecord::Cpu() const { return cpu_data.cpu; } |
| uint64_t SampleRecord::Id() const { return id_data.id; } |
| |
| void SampleRecord::AdjustCallChainGeneratedByKernel() { |
| // The kernel stores return addrs in the callchain, but we want the addrs of call instructions |
| // along the callchain. |
| uint64_t* ips = callchain_data.ips; |
| bool first_frame = true; |
| for (uint64_t i = 0; i < callchain_data.ip_nr; ++i) { |
| if (ips[i] > 0 && ips[i] < PERF_CONTEXT_MAX) { |
| if (first_frame) { |
| first_frame = false; |
| } else { |
| // Here we want to change the return addr to the addr of the previous instruction. We don't |
| // need to find the exact start addr of the previous instruction. A location in |
| // [start_addr_of_call_inst, start_addr_of_next_inst) is enough. |
| #if defined(__arm__) || defined(__aarch64__) |
| // If we are built for arm/aarch64, this may be a callchain of thumb code. For thumb code, |
| // the real instruction addr is (ip & ~1), and ip - 2 can used to hit the address range |
| // of the previous instruction. For non thumb code, any addr in [ip - 4, ip - 1] is fine. |
| ips[i] -= 2; |
| #else |
| ips[i]--; |
| #endif |
| } |
| } |
| } |
| } |
| |
| BuildIdRecord::BuildIdRecord(char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| MoveFromBinaryFormat(pid, p); |
| build_id = BuildId(p, BUILD_ID_SIZE); |
| p += Align(build_id.Size(), 8); |
| filename = p; |
| p += Align(strlen(filename) + 1, 64); |
| CHECK_EQ(p, end); |
| } |
| |
| void BuildIdRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "pid %u\n", pid); |
| PrintIndented(indent, "build_id %s\n", build_id.ToString().c_str()); |
| PrintIndented(indent, "filename %s\n", filename); |
| } |
| |
| BuildIdRecord::BuildIdRecord(bool in_kernel, pid_t pid, const BuildId& build_id, |
| const std::string& filename) { |
| SetTypeAndMisc(PERF_RECORD_BUILD_ID, |
| in_kernel ? PERF_RECORD_MISC_KERNEL : PERF_RECORD_MISC_USER); |
| this->pid = pid; |
| this->build_id = build_id; |
| SetSize(header_size() + sizeof(pid) + Align(build_id.Size(), 8) + |
| Align(filename.size() + 1, 64)); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| MoveToBinaryFormat(pid, p); |
| memcpy(p, build_id.Data(), build_id.Size()); |
| p += Align(build_id.Size(), 8); |
| this->filename = p; |
| strcpy(p, filename.c_str()); |
| UpdateBinary(new_binary); |
| } |
| |
| KernelSymbolRecord::KernelSymbolRecord(char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| MoveFromBinaryFormat(kallsyms_size, p); |
| kallsyms = p; |
| p += Align(kallsyms_size, 8); |
| CHECK_EQ(p, end); |
| } |
| |
| void KernelSymbolRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "kallsyms: %s\n", |
| std::string(kallsyms, kallsyms + kallsyms_size).c_str()); |
| } |
| |
| KernelSymbolRecord::KernelSymbolRecord(const std::string& kallsyms) { |
| SetTypeAndMisc(SIMPLE_PERF_RECORD_KERNEL_SYMBOL, 0); |
| kallsyms_size = kallsyms.size(); |
| SetSize(header_size() + 4 + Align(kallsyms.size(), 8)); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| MoveToBinaryFormat(kallsyms_size, p); |
| this->kallsyms = p; |
| memcpy(p, kallsyms.data(), kallsyms_size); |
| UpdateBinary(new_binary); |
| } |
| |
| DsoRecord::DsoRecord(char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| MoveFromBinaryFormat(dso_type, p); |
| MoveFromBinaryFormat(dso_id, p); |
| MoveFromBinaryFormat(min_vaddr, p); |
| dso_name = p; |
| p += Align(strlen(dso_name) + 1, 8); |
| CHECK_EQ(p, end); |
| } |
| |
| DsoRecord::DsoRecord(uint64_t dso_type, uint64_t dso_id, |
| const std::string& dso_name, uint64_t min_vaddr) { |
| SetTypeAndMisc(SIMPLE_PERF_RECORD_DSO, 0); |
| this->dso_type = dso_type; |
| this->dso_id = dso_id; |
| this->min_vaddr = min_vaddr; |
| SetSize(header_size() + 3 * sizeof(uint64_t) + Align(dso_name.size() + 1, 8)); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| MoveToBinaryFormat(dso_type, p); |
| MoveToBinaryFormat(dso_id, p); |
| MoveToBinaryFormat(min_vaddr, p); |
| this->dso_name = p; |
| strcpy(p, dso_name.c_str()); |
| UpdateBinary(new_binary); |
| } |
| |
| void DsoRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "dso_type: %s(%" PRIu64 ")\n", |
| DsoTypeToString(static_cast<DsoType>(dso_type)), dso_type); |
| PrintIndented(indent, "dso_id: %" PRIu64 "\n", dso_id); |
| PrintIndented(indent, "min_vaddr: 0x%" PRIx64 "\n", min_vaddr); |
| PrintIndented(indent, "dso_name: %s\n", dso_name); |
| } |
| |
| SymbolRecord::SymbolRecord(char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| MoveFromBinaryFormat(addr, p); |
| MoveFromBinaryFormat(len, p); |
| MoveFromBinaryFormat(dso_id, p); |
| name = p; |
| p += Align(strlen(name) + 1, 8); |
| CHECK_EQ(p, end); |
| } |
| |
| SymbolRecord::SymbolRecord(uint64_t addr, uint64_t len, const std::string& name, |
| uint64_t dso_id) { |
| SetTypeAndMisc(SIMPLE_PERF_RECORD_SYMBOL, 0); |
| this->addr = addr; |
| this->len = len; |
| this->dso_id = dso_id; |
| SetSize(header_size() + 3 * sizeof(uint64_t) + Align(name.size() + 1, 8)); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| MoveToBinaryFormat(addr, p); |
| MoveToBinaryFormat(len, p); |
| MoveToBinaryFormat(dso_id, p); |
| this->name = p; |
| strcpy(p, name.c_str()); |
| UpdateBinary(new_binary); |
| } |
| |
| void SymbolRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "name: %s\n", name); |
| PrintIndented(indent, "addr: 0x%" PRIx64 "\n", addr); |
| PrintIndented(indent, "len: 0x%" PRIx64 "\n", len); |
| PrintIndented(indent, "dso_id: %" PRIu64 "\n", dso_id); |
| } |
| |
| TracingDataRecord::TracingDataRecord(char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| MoveFromBinaryFormat(data_size, p); |
| data = p; |
| p += Align(data_size, 64); |
| CHECK_EQ(p, end); |
| } |
| |
| TracingDataRecord::TracingDataRecord(const std::vector<char>& tracing_data) { |
| SetTypeAndMisc(PERF_RECORD_TRACING_DATA, 0); |
| data_size = tracing_data.size(); |
| SetSize(header_size() + sizeof(uint32_t) + Align(tracing_data.size(), 64)); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| MoveToBinaryFormat(data_size, p); |
| data = p; |
| memcpy(p, tracing_data.data(), data_size); |
| UpdateBinary(new_binary); |
| } |
| |
| void TracingDataRecord::DumpData(size_t indent) const { |
| Tracing tracing(std::vector<char>(data, data + data_size)); |
| tracing.Dump(indent); |
| } |
| |
| EventIdRecord::EventIdRecord(char* p) : Record(p) { |
| const char* end = p + size(); |
| p += header_size(); |
| MoveFromBinaryFormat(count, p); |
| data = reinterpret_cast<const EventIdData*>(p); |
| p += sizeof(data[0]) * count; |
| CHECK_EQ(p, end); |
| } |
| |
| EventIdRecord::EventIdRecord(const std::vector<uint64_t>& data) { |
| SetTypeAndMisc(SIMPLE_PERF_RECORD_EVENT_ID, 0); |
| SetSize(header_size() + sizeof(uint64_t) * (1 + data.size())); |
| char* new_binary = new char[size()]; |
| char* p = new_binary; |
| MoveToBinaryFormat(header, p); |
| count = data.size() / 2; |
| MoveToBinaryFormat(count, p); |
| this->data = reinterpret_cast<EventIdData*>(p); |
| memcpy(p, data.data(), sizeof(uint64_t) * data.size()); |
| UpdateBinary(new_binary); |
| } |
| |
| void EventIdRecord::DumpData(size_t indent) const { |
| PrintIndented(indent, "count: %" PRIu64 "\n", count); |
| for (size_t i = 0; i < count; ++i) { |
| PrintIndented(indent, "attr_id[%" PRIu64 "]: %" PRIu64 "\n", i, |
| data[i].attr_id); |
| PrintIndented(indent, "event_id[%" PRIu64 "]: %" PRIu64 "\n", i, |
| data[i].event_id); |
| } |
| } |
| |
| UnknownRecord::UnknownRecord(char* p) : Record(p) { |
| p += header_size(); |
| data = p; |
| } |
| |
| void UnknownRecord::DumpData(size_t) const {} |
| |
| std::unique_ptr<Record> ReadRecordFromBuffer(const perf_event_attr& attr, uint32_t type, char* p) { |
| switch (type) { |
| case PERF_RECORD_MMAP: |
| return std::unique_ptr<Record>(new MmapRecord(attr, p)); |
| case PERF_RECORD_MMAP2: |
| return std::unique_ptr<Record>(new Mmap2Record(attr, p)); |
| case PERF_RECORD_COMM: |
| return std::unique_ptr<Record>(new CommRecord(attr, p)); |
| case PERF_RECORD_EXIT: |
| return std::unique_ptr<Record>(new ExitRecord(attr, p)); |
| case PERF_RECORD_FORK: |
| return std::unique_ptr<Record>(new ForkRecord(attr, p)); |
| case PERF_RECORD_LOST: |
| return std::unique_ptr<Record>(new LostRecord(attr, p)); |
| case PERF_RECORD_SAMPLE: |
| return std::unique_ptr<Record>(new SampleRecord(attr, p)); |
| case PERF_RECORD_TRACING_DATA: |
| return std::unique_ptr<Record>(new TracingDataRecord(p)); |
| case SIMPLE_PERF_RECORD_KERNEL_SYMBOL: |
| return std::unique_ptr<Record>(new KernelSymbolRecord(p)); |
| case SIMPLE_PERF_RECORD_DSO: |
| return std::unique_ptr<Record>(new DsoRecord(p)); |
| case SIMPLE_PERF_RECORD_SYMBOL: |
| return std::unique_ptr<Record>(new SymbolRecord(p)); |
| case SIMPLE_PERF_RECORD_EVENT_ID: |
| return std::unique_ptr<Record>(new EventIdRecord(p)); |
| default: |
| return std::unique_ptr<Record>(new UnknownRecord(p)); |
| } |
| } |
| |
| std::unique_ptr<Record> ReadRecordFromOwnedBuffer(const perf_event_attr& attr, |
| uint32_t type, char* p) { |
| std::unique_ptr<Record> record = ReadRecordFromBuffer(attr, type, p); |
| if (record != nullptr) { |
| record->OwnBinary(); |
| } else { |
| delete[] p; |
| } |
| return record; |
| } |
| |
| std::vector<std::unique_ptr<Record>> ReadRecordsFromBuffer( |
| const perf_event_attr& attr, char* buf, size_t buf_size) { |
| std::vector<std::unique_ptr<Record>> result; |
| char* p = buf; |
| char* end = buf + buf_size; |
| while (p < end) { |
| RecordHeader header(p); |
| CHECK_LE(p + header.size, end); |
| CHECK_NE(0u, header.size); |
| result.push_back(ReadRecordFromBuffer(attr, header.type, p)); |
| p += header.size; |
| } |
| return result; |
| } |
| |
| std::unique_ptr<Record> ReadRecordFromBuffer(const perf_event_attr& attr, char* p) { |
| auto header = reinterpret_cast<const perf_event_header*>(p); |
| return ReadRecordFromBuffer(attr, header->type, p); |
| } |
| |
| bool RecordCache::RecordWithSeq::IsHappensBefore( |
| const RecordWithSeq& other) const { |
| bool is_sample = (record->type() == PERF_RECORD_SAMPLE); |
| bool is_other_sample = (other.record->type() == PERF_RECORD_SAMPLE); |
| uint64_t time = record->Timestamp(); |
| uint64_t other_time = other.record->Timestamp(); |
| // The record with smaller time happens first. |
| if (time != other_time) { |
| return time < other_time; |
| } |
| // If happening at the same time, make non-sample records before sample |
| // records, because non-sample records may contain useful information to |
| // parse sample records. |
| if (is_sample != is_other_sample) { |
| return is_sample ? false : true; |
| } |
| // Otherwise, use the same order as they enter the cache. |
| return seq < other.seq; |
| } |
| |
| bool RecordCache::RecordComparator::operator()(const RecordWithSeq& r1, |
| const RecordWithSeq& r2) { |
| return r2.IsHappensBefore(r1); |
| } |
| |
| RecordCache::RecordCache(bool has_timestamp, size_t min_cache_size, |
| uint64_t min_time_diff_in_ns) |
| : has_timestamp_(has_timestamp), |
| min_cache_size_(min_cache_size), |
| min_time_diff_in_ns_(min_time_diff_in_ns), |
| last_time_(0), |
| cur_seq_(0), |
| queue_(RecordComparator()) {} |
| |
| RecordCache::~RecordCache() { PopAll(); } |
| |
| void RecordCache::Push(std::unique_ptr<Record> record) { |
| if (has_timestamp_) { |
| last_time_ = std::max(last_time_, record->Timestamp()); |
| } |
| queue_.push(RecordWithSeq(cur_seq_++, record.release())); |
| } |
| |
| void RecordCache::Push(std::vector<std::unique_ptr<Record>> records) { |
| for (auto& r : records) { |
| Push(std::move(r)); |
| } |
| } |
| |
| std::unique_ptr<Record> RecordCache::Pop() { |
| if (queue_.size() < min_cache_size_) { |
| return nullptr; |
| } |
| Record* r = queue_.top().record; |
| if (has_timestamp_) { |
| if (r->Timestamp() + min_time_diff_in_ns_ > last_time_) { |
| return nullptr; |
| } |
| } |
| queue_.pop(); |
| return std::unique_ptr<Record>(r); |
| } |
| |
| std::vector<std::unique_ptr<Record>> RecordCache::PopAll() { |
| std::vector<std::unique_ptr<Record>> result; |
| while (!queue_.empty()) { |
| result.emplace_back(queue_.top().record); |
| queue_.pop(); |
| } |
| return result; |
| } |
| |
| std::unique_ptr<Record> RecordCache::ForcedPop() { |
| if (queue_.empty()) { |
| return nullptr; |
| } |
| Record* r = queue_.top().record; |
| queue_.pop(); |
| return std::unique_ptr<Record>(r); |
| } |