/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "record.h"
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#include <inttypes.h>
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#include <algorithm>
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#include <unordered_map>
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#include <android-base/logging.h>
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#include <android-base/stringprintf.h>
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#include "dso.h"
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#include "OfflineUnwinder.h"
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#include "perf_regs.h"
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#include "tracing.h"
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#include "utils.h"
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using namespace simpleperf;
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static std::string RecordTypeToString(int record_type) {
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static std::unordered_map<int, std::string> record_type_names = {
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{PERF_RECORD_MMAP, "mmap"},
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{PERF_RECORD_LOST, "lost"},
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{PERF_RECORD_COMM, "comm"},
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{PERF_RECORD_EXIT, "exit"},
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{PERF_RECORD_THROTTLE, "throttle"},
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{PERF_RECORD_UNTHROTTLE, "unthrottle"},
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{PERF_RECORD_FORK, "fork"},
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{PERF_RECORD_READ, "read"},
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{PERF_RECORD_SAMPLE, "sample"},
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{PERF_RECORD_BUILD_ID, "build_id"},
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{PERF_RECORD_MMAP2, "mmap2"},
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{PERF_RECORD_TRACING_DATA, "tracing_data"},
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{SIMPLE_PERF_RECORD_KERNEL_SYMBOL, "kernel_symbol"},
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{SIMPLE_PERF_RECORD_DSO, "dso"},
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{SIMPLE_PERF_RECORD_SYMBOL, "symbol"},
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{SIMPLE_PERF_RECORD_EVENT_ID, "event_id"},
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{SIMPLE_PERF_RECORD_CALLCHAIN, "callchain"},
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{SIMPLE_PERF_RECORD_UNWINDING_RESULT, "unwinding_result"},
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{SIMPLE_PERF_RECORD_TRACING_DATA, "tracing_data"},
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};
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auto it = record_type_names.find(record_type);
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if (it != record_type_names.end()) {
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return it->second;
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}
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return android::base::StringPrintf("unknown(%d)", record_type);
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}
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template <>
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void MoveToBinaryFormat(const RecordHeader& data, char*& p) {
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data.MoveToBinaryFormat(p);
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}
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SampleId::SampleId() { memset(this, 0, sizeof(SampleId)); }
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// Return sample_id size in binary format.
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size_t SampleId::CreateContent(const perf_event_attr& attr, uint64_t event_id) {
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sample_id_all = attr.sample_id_all;
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sample_type = attr.sample_type;
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id_data.id = event_id;
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// Other data are not necessary. TODO: Set missing SampleId data.
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return Size();
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}
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void SampleId::ReadFromBinaryFormat(const perf_event_attr& attr, const char* p,
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const char* end) {
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sample_id_all = attr.sample_id_all;
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sample_type = attr.sample_type;
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if (sample_id_all) {
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if (sample_type & PERF_SAMPLE_TID) {
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MoveFromBinaryFormat(tid_data, p);
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}
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if (sample_type & PERF_SAMPLE_TIME) {
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MoveFromBinaryFormat(time_data, p);
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}
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if (sample_type & PERF_SAMPLE_ID) {
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MoveFromBinaryFormat(id_data, p);
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}
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if (sample_type & PERF_SAMPLE_STREAM_ID) {
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MoveFromBinaryFormat(stream_id_data, p);
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}
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if (sample_type & PERF_SAMPLE_CPU) {
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MoveFromBinaryFormat(cpu_data, p);
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}
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if (sample_type & PERF_SAMPLE_IDENTIFIER) {
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MoveFromBinaryFormat(id_data, p);
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}
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}
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CHECK_LE(p, end);
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if (p < end) {
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LOG(DEBUG) << "Record SampleId part has " << end - p << " bytes left\n";
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}
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}
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void SampleId::WriteToBinaryFormat(char*& p) const {
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if (sample_id_all) {
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if (sample_type & PERF_SAMPLE_TID) {
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MoveToBinaryFormat(tid_data, p);
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}
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if (sample_type & PERF_SAMPLE_TIME) {
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MoveToBinaryFormat(time_data, p);
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}
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if (sample_type & PERF_SAMPLE_ID) {
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MoveToBinaryFormat(id_data, p);
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}
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if (sample_type & PERF_SAMPLE_STREAM_ID) {
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MoveToBinaryFormat(stream_id_data, p);
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}
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if (sample_type & PERF_SAMPLE_CPU) {
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MoveToBinaryFormat(cpu_data, p);
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}
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}
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}
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void SampleId::Dump(size_t indent) const {
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if (sample_id_all) {
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if (sample_type & PERF_SAMPLE_TID) {
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PrintIndented(indent, "sample_id: pid %u, tid %u\n", tid_data.pid,
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tid_data.tid);
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}
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if (sample_type & PERF_SAMPLE_TIME) {
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PrintIndented(indent, "sample_id: time %" PRId64 "\n", time_data.time);
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}
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if (sample_type & (PERF_SAMPLE_ID | PERF_SAMPLE_IDENTIFIER)) {
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PrintIndented(indent, "sample_id: id %" PRId64 "\n", id_data.id);
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}
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if (sample_type & PERF_SAMPLE_STREAM_ID) {
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PrintIndented(indent, "sample_id: stream_id %" PRId64 "\n",
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stream_id_data.stream_id);
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}
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if (sample_type & PERF_SAMPLE_CPU) {
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PrintIndented(indent, "sample_id: cpu %u, res %u\n", cpu_data.cpu,
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cpu_data.res);
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}
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}
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}
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size_t SampleId::Size() const {
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size_t size = 0;
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if (sample_id_all) {
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if (sample_type & PERF_SAMPLE_TID) {
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size += sizeof(PerfSampleTidType);
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}
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if (sample_type & PERF_SAMPLE_TIME) {
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size += sizeof(PerfSampleTimeType);
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}
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if (sample_type & PERF_SAMPLE_ID) {
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size += sizeof(PerfSampleIdType);
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}
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if (sample_type & PERF_SAMPLE_STREAM_ID) {
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size += sizeof(PerfSampleStreamIdType);
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}
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if (sample_type & PERF_SAMPLE_CPU) {
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size += sizeof(PerfSampleCpuType);
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}
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if (sample_type & PERF_SAMPLE_IDENTIFIER) {
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size += sizeof(PerfSampleIdType);
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}
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}
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return size;
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}
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Record::Record(Record&& other) noexcept {
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header = other.header;
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sample_id = other.sample_id;
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binary_ = other.binary_;
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own_binary_ = other.own_binary_;
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other.binary_ = nullptr;
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other.own_binary_ = false;
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}
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void Record::Dump(size_t indent) const {
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PrintIndented(indent, "record %s: type %u, misc %u, size %u\n",
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RecordTypeToString(type()).c_str(), type(), misc(), size());
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DumpData(indent + 1);
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sample_id.Dump(indent + 1);
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}
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uint64_t Record::Timestamp() const { return sample_id.time_data.time; }
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uint32_t Record::Cpu() const { return sample_id.cpu_data.cpu; }
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uint64_t Record::Id() const { return sample_id.id_data.id; }
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void Record::UpdateBinary(char* new_binary) {
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if (own_binary_) {
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delete[] binary_;
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}
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own_binary_ = true;
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binary_ = new_binary;
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}
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MmapRecord::MmapRecord(const perf_event_attr& attr, char* p) : Record(p) {
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const char* end = p + size();
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p += header_size();
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data = reinterpret_cast<const MmapRecordDataType*>(p);
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p += sizeof(*data);
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filename = p;
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p += Align(strlen(filename) + 1, 8);
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CHECK_LE(p, end);
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sample_id.ReadFromBinaryFormat(attr, p, end);
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}
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MmapRecord::MmapRecord(const perf_event_attr& attr, bool in_kernel,
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uint32_t pid, uint32_t tid, uint64_t addr, uint64_t len,
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uint64_t pgoff, const std::string& filename,
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uint64_t event_id, uint64_t time) {
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SetTypeAndMisc(PERF_RECORD_MMAP,
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in_kernel ? PERF_RECORD_MISC_KERNEL : PERF_RECORD_MISC_USER);
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sample_id.CreateContent(attr, event_id);
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sample_id.time_data.time = time;
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MmapRecordDataType data;
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data.pid = pid;
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data.tid = tid;
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data.addr = addr;
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data.len = len;
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data.pgoff = pgoff;
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SetDataAndFilename(data, filename);
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}
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void MmapRecord::SetDataAndFilename(const MmapRecordDataType& data,
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const std::string& filename) {
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SetSize(header_size() + sizeof(data) + Align(filename.size() + 1, 8) +
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sample_id.Size());
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char* new_binary = new char[size()];
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char* p = new_binary;
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MoveToBinaryFormat(header, p);
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this->data = reinterpret_cast<MmapRecordDataType*>(p);
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MoveToBinaryFormat(data, p);
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this->filename = p;
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strcpy(p, filename.c_str());
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p += Align(filename.size() + 1, 8);
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sample_id.WriteToBinaryFormat(p);
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UpdateBinary(new_binary);
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}
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void MmapRecord::DumpData(size_t indent) const {
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PrintIndented(indent,
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"pid %u, tid %u, addr 0x%" PRIx64 ", len 0x%" PRIx64 "\n",
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data->pid, data->tid, data->addr, data->len);
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PrintIndented(indent, "pgoff 0x%" PRIx64 ", filename %s\n", data->pgoff,
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filename);
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}
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Mmap2Record::Mmap2Record(const perf_event_attr& attr, char* p) : Record(p) {
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const char* end = p + size();
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p += header_size();
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data = reinterpret_cast<const Mmap2RecordDataType*>(p);
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p += sizeof(*data);
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filename = p;
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p += Align(strlen(filename) + 1, 8);
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CHECK_LE(p, end);
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sample_id.ReadFromBinaryFormat(attr, p, end);
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}
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Mmap2Record::Mmap2Record(const perf_event_attr& attr, bool in_kernel, uint32_t pid, uint32_t tid,
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uint64_t addr, uint64_t len, uint64_t pgoff, uint32_t prot,
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const std::string& filename, uint64_t event_id, uint64_t time) {
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SetTypeAndMisc(PERF_RECORD_MMAP2, in_kernel ? PERF_RECORD_MISC_KERNEL : PERF_RECORD_MISC_USER);
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sample_id.CreateContent(attr, event_id);
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sample_id.time_data.time = time;
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Mmap2RecordDataType data;
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data.pid = pid;
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data.tid = tid;
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data.addr = addr;
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data.len = len;
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data.pgoff = pgoff;
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data.prot = prot;
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SetDataAndFilename(data, filename);
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}
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void Mmap2Record::SetDataAndFilename(const Mmap2RecordDataType& data,
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const std::string& filename) {
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SetSize(header_size() + sizeof(data) + Align(filename.size() + 1, 8) +
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sample_id.Size());
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char* new_binary = new char[size()];
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char* p = new_binary;
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MoveToBinaryFormat(header, p);
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this->data = reinterpret_cast<Mmap2RecordDataType*>(p);
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MoveToBinaryFormat(data, p);
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this->filename = p;
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strcpy(p, filename.c_str());
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p += Align(filename.size() + 1, 8);
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sample_id.WriteToBinaryFormat(p);
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UpdateBinary(new_binary);
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}
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void Mmap2Record::DumpData(size_t indent) const {
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PrintIndented(indent,
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"pid %u, tid %u, addr 0x%" PRIx64 ", len 0x%" PRIx64 "\n",
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data->pid, data->tid, data->addr, data->len);
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PrintIndented(indent, "pgoff 0x%" PRIx64 ", maj %u, min %u, ino %" PRId64
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", ino_generation %" PRIu64 "\n",
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data->pgoff, data->maj, data->min, data->ino,
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data->ino_generation);
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PrintIndented(indent, "prot %u, flags %u, filename %s\n", data->prot,
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data->flags, filename);
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}
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CommRecord::CommRecord(const perf_event_attr& attr, char* p) : Record(p) {
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const char* end = p + size();
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p += header_size();
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data = reinterpret_cast<const CommRecordDataType*>(p);
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p += sizeof(*data);
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comm = p;
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p += Align(strlen(p) + 1, 8);
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CHECK_LE(p, end);
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sample_id.ReadFromBinaryFormat(attr, p, end);
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}
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CommRecord::CommRecord(const perf_event_attr& attr, uint32_t pid, uint32_t tid,
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const std::string& comm, uint64_t event_id, uint64_t time) {
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SetTypeAndMisc(PERF_RECORD_COMM, 0);
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CommRecordDataType data;
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data.pid = pid;
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data.tid = tid;
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size_t sample_id_size = sample_id.CreateContent(attr, event_id);
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sample_id.time_data.time = time;
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SetSize(header_size() + sizeof(data) + Align(comm.size() + 1, 8) +
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sample_id_size);
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char* new_binary = new char[size()];
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char* p = new_binary;
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MoveToBinaryFormat(header, p);
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this->data = reinterpret_cast<CommRecordDataType*>(p);
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MoveToBinaryFormat(data, p);
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this->comm = p;
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strcpy(p, comm.c_str());
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p += Align(comm.size() + 1, 8);
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sample_id.WriteToBinaryFormat(p);
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UpdateBinary(new_binary);
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}
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void CommRecord::SetCommandName(const std::string& name) {
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if (name.compare(comm) == 0) {
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return;
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}
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// The kernel uses a 8-byte aligned space to store command name. Follow it here to allow the same
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// reading code.
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size_t old_name_len = Align(strlen(comm) + 1, 8);
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size_t new_name_len = Align(name.size() + 1, 8);
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size_t new_size = size() - old_name_len + new_name_len;
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char* new_binary = new char[new_size];
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char* p = new_binary;
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header.size = new_size;
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MoveToBinaryFormat(header, p);
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MoveToBinaryFormat(*data, p);
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data = reinterpret_cast<CommRecordDataType*>(p - sizeof(CommRecordDataType));
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comm = p;
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strcpy(p, name.c_str());
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p += new_name_len;
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sample_id.WriteToBinaryFormat(p);
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CHECK_EQ(p, new_binary + new_size);
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UpdateBinary(new_binary);
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}
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void CommRecord::DumpData(size_t indent) const {
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PrintIndented(indent, "pid %u, tid %u, comm %s\n", data->pid, data->tid,
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comm);
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}
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ExitOrForkRecord::ExitOrForkRecord(const perf_event_attr& attr, char* p)
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: Record(p) {
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const char* end = p + size();
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p += header_size();
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data = reinterpret_cast<const ExitOrForkRecordDataType*>(p);
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p += sizeof(*data);
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CHECK_LE(p, end);
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sample_id.ReadFromBinaryFormat(attr, p, end);
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}
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void ExitOrForkRecord::DumpData(size_t indent) const {
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PrintIndented(indent, "pid %u, ppid %u, tid %u, ptid %u\n", data->pid,
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data->ppid, data->tid, data->ptid);
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}
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ForkRecord::ForkRecord(const perf_event_attr& attr, uint32_t pid, uint32_t tid,
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uint32_t ppid, uint32_t ptid, uint64_t event_id) {
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SetTypeAndMisc(PERF_RECORD_FORK, 0);
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ExitOrForkRecordDataType data;
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data.pid = pid;
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data.ppid = ppid;
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data.tid = tid;
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data.ptid = ptid;
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data.time = 0;
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size_t sample_id_size = sample_id.CreateContent(attr, event_id);
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SetSize(header_size() + sizeof(data) + sample_id_size);
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char* new_binary = new char[size()];
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char* p = new_binary;
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MoveToBinaryFormat(header, p);
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this->data = reinterpret_cast<ExitOrForkRecordDataType*>(p);
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MoveToBinaryFormat(data, p);
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sample_id.WriteToBinaryFormat(p);
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UpdateBinary(new_binary);
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}
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LostRecord::LostRecord(const perf_event_attr& attr, char* p) : Record(p) {
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const char* end = p + size();
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p += header_size();
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MoveFromBinaryFormat(id, p);
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MoveFromBinaryFormat(lost, p);
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CHECK_LE(p, end);
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sample_id.ReadFromBinaryFormat(attr, p, end);
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}
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void LostRecord::DumpData(size_t indent) const {
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PrintIndented(indent, "id %" PRIu64 ", lost %" PRIu64 "\n", id, lost);
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}
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SampleRecord::SampleRecord(const perf_event_attr& attr, char* p) : Record(p) {
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const char* end = p + size();
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p += header_size();
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sample_type = attr.sample_type;
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// Set a default id value to report correctly even if ID is not recorded.
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id_data.id = 0;
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if (sample_type & PERF_SAMPLE_IDENTIFIER) {
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MoveFromBinaryFormat(id_data, p);
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}
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if (sample_type & PERF_SAMPLE_IP) {
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MoveFromBinaryFormat(ip_data, p);
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}
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if (sample_type & PERF_SAMPLE_TID) {
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MoveFromBinaryFormat(tid_data, p);
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}
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if (sample_type & PERF_SAMPLE_TIME) {
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MoveFromBinaryFormat(time_data, p);
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}
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if (sample_type & PERF_SAMPLE_ADDR) {
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MoveFromBinaryFormat(addr_data, p);
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}
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if (sample_type & PERF_SAMPLE_ID) {
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MoveFromBinaryFormat(id_data, p);
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}
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if (sample_type & PERF_SAMPLE_STREAM_ID) {
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MoveFromBinaryFormat(stream_id_data, p);
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}
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if (sample_type & PERF_SAMPLE_CPU) {
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MoveFromBinaryFormat(cpu_data, p);
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}
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if (sample_type & PERF_SAMPLE_PERIOD) {
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MoveFromBinaryFormat(period_data, p);
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}
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if (sample_type & PERF_SAMPLE_CALLCHAIN) {
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MoveFromBinaryFormat(callchain_data.ip_nr, p);
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callchain_data.ips = reinterpret_cast<uint64_t*>(p);
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p += callchain_data.ip_nr * sizeof(uint64_t);
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}
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if (sample_type & PERF_SAMPLE_RAW) {
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MoveFromBinaryFormat(raw_data.size, p);
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raw_data.data = p;
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p += raw_data.size;
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}
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if (sample_type & PERF_SAMPLE_BRANCH_STACK) {
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MoveFromBinaryFormat(branch_stack_data.stack_nr, p);
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branch_stack_data.stack = reinterpret_cast<BranchStackItemType*>(p);
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p += branch_stack_data.stack_nr * sizeof(BranchStackItemType);
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}
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if (sample_type & PERF_SAMPLE_REGS_USER) {
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MoveFromBinaryFormat(regs_user_data.abi, p);
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if (regs_user_data.abi == 0) {
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regs_user_data.reg_mask = 0;
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} else {
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regs_user_data.reg_mask = attr.sample_regs_user;
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size_t bit_nr = __builtin_popcountll(regs_user_data.reg_mask);
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regs_user_data.reg_nr = bit_nr;
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regs_user_data.regs = reinterpret_cast<uint64_t*>(p);
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p += bit_nr * sizeof(uint64_t);
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}
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}
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if (sample_type & PERF_SAMPLE_STACK_USER) {
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MoveFromBinaryFormat(stack_user_data.size, p);
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if (stack_user_data.size == 0) {
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stack_user_data.dyn_size = 0;
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} else {
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stack_user_data.data = p;
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p += stack_user_data.size;
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MoveFromBinaryFormat(stack_user_data.dyn_size, p);
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}
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}
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// TODO: Add parsing of other PERF_SAMPLE_*.
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CHECK_LE(p, end);
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if (p < end) {
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LOG(DEBUG) << "Record has " << end - p << " bytes left\n";
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}
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}
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SampleRecord::SampleRecord(const perf_event_attr& attr, uint64_t id,
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uint64_t ip, uint32_t pid, uint32_t tid,
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uint64_t time, uint32_t cpu, uint64_t period,
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const std::vector<uint64_t>& ips, const std::vector<char>& stack,
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uint64_t dyn_stack_size) {
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SetTypeAndMisc(PERF_RECORD_SAMPLE, PERF_RECORD_MISC_USER);
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sample_type = attr.sample_type;
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CHECK_EQ(0u, sample_type & ~(PERF_SAMPLE_IP | PERF_SAMPLE_TID
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| PERF_SAMPLE_TIME | PERF_SAMPLE_ID | PERF_SAMPLE_CPU
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| PERF_SAMPLE_PERIOD | PERF_SAMPLE_CALLCHAIN | PERF_SAMPLE_REGS_USER
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| PERF_SAMPLE_STACK_USER));
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ip_data.ip = ip;
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tid_data.pid = pid;
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tid_data.tid = tid;
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time_data.time = time;
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id_data.id = id;
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cpu_data.cpu = cpu;
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cpu_data.res = 0;
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period_data.period = period;
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callchain_data.ip_nr = ips.size();
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raw_data.size = 0;
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branch_stack_data.stack_nr = 0;
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regs_user_data.abi = 0;
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regs_user_data.reg_mask = 0;
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regs_user_data.reg_nr = 0;
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stack_user_data.size = stack.size();
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stack_user_data.dyn_size = dyn_stack_size;
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uint32_t size = header_size();
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if (sample_type & PERF_SAMPLE_IP) {
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size += sizeof(ip_data);
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}
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if (sample_type & PERF_SAMPLE_TID) {
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size += sizeof(tid_data);
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}
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if (sample_type & PERF_SAMPLE_TIME) {
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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) + (stack.empty() ? 0 : stack.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);
|
if (stack_user_data.size > 0) {
|
stack_user_data.data = p;
|
MoveToBinaryFormat(stack.data(), stack_user_data.size, p);
|
MoveToBinaryFormat(stack_user_data.dyn_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);
|
uint32_t new_size = size() + size_added_in_callchain - size_reduced_in_reg_stack;
|
BuildBinaryWithNewCallChain(new_size, ips);
|
}
|
|
bool SampleRecord::ExcludeKernelCallChain() {
|
if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
|
return true;
|
}
|
size_t i;
|
for (i = 0; i < callchain_data.ip_nr; ++i) {
|
if (callchain_data.ips[i] == PERF_CONTEXT_USER) {
|
break;
|
}
|
// Erase kernel callchain.
|
callchain_data.ips[i] = PERF_CONTEXT_USER;
|
}
|
while (++i < callchain_data.ip_nr) {
|
if (callchain_data.ips[i] < PERF_CONTEXT_MAX) {
|
// Change the sample to make it hit the user space ip address.
|
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_CPUMODE_MASK) | PERF_RECORD_MISC_USER;
|
reinterpret_cast<perf_event_header*>(binary_)->misc = header.misc;
|
return true;
|
}
|
}
|
return false;
|
}
|
|
bool SampleRecord::HasUserCallChain() const {
|
if ((sample_type & PERF_SAMPLE_CALLCHAIN) == 0) {
|
return false;
|
}
|
bool in_user_context = !InKernel();
|
for (size_t i = 0; i < callchain_data.ip_nr; ++i) {
|
if (in_user_context && callchain_data.ips[i] < PERF_CONTEXT_MAX) {
|
return true;
|
}
|
if (callchain_data.ips[i] == PERF_CONTEXT_USER) {
|
in_user_context = true;
|
}
|
}
|
return false;
|
}
|
|
void SampleRecord::UpdateUserCallChain(const std::vector<uint64_t>& user_ips) {
|
size_t kernel_ip_count = 0;
|
for (size_t i = 0; i < callchain_data.ip_nr; ++i) {
|
if (callchain_data.ips[i] == PERF_CONTEXT_USER) {
|
break;
|
}
|
kernel_ip_count++;
|
}
|
if (kernel_ip_count + 1 + user_ips.size() <= callchain_data.ip_nr) {
|
// Callchain isn't changed.
|
return;
|
}
|
size_t new_size = size() + (kernel_ip_count + 1 + user_ips.size() - callchain_data.ip_nr) *
|
sizeof(uint64_t);
|
callchain_data.ip_nr = kernel_ip_count;
|
BuildBinaryWithNewCallChain(new_size, user_ips);
|
}
|
|
void SampleRecord::BuildBinaryWithNewCallChain(uint32_t new_size,
|
const std::vector<uint64_t>& ips) {
|
size_t callchain_pos = reinterpret_cast<char*>(callchain_data.ips) - binary_ - sizeof(uint64_t);
|
char* new_binary = binary_;
|
if (new_size > size()) {
|
new_binary = new char[new_size];
|
memcpy(new_binary, binary_, callchain_pos);
|
}
|
char* p = new_binary;
|
SetSize(new_size);
|
MoveToBinaryFormat(header, p);
|
p = new_binary + new_size;
|
if (sample_type & PERF_SAMPLE_STACK_USER) {
|
stack_user_data.size = 0;
|
p -= sizeof(uint64_t);
|
memcpy(p, &stack_user_data.size, sizeof(uint64_t));
|
}
|
if (sample_type & PERF_SAMPLE_REGS_USER) {
|
regs_user_data.abi = 0;
|
p -= sizeof(uint64_t);
|
memcpy(p, ®s_user_data.abi, sizeof(uint64_t));
|
}
|
if (sample_type & PERF_SAMPLE_BRANCH_STACK) {
|
p -= branch_stack_data.stack_nr * sizeof(BranchStackItemType);
|
memcpy(p, branch_stack_data.stack, branch_stack_data.stack_nr * sizeof(BranchStackItemType));
|
branch_stack_data.stack = reinterpret_cast<BranchStackItemType*>(p);
|
p -= sizeof(uint64_t);
|
memcpy(p, &branch_stack_data.stack_nr, sizeof(uint64_t));
|
}
|
if (sample_type & PERF_SAMPLE_RAW) {
|
p -= raw_data.size;
|
memcpy(p, raw_data.data, raw_data.size);
|
raw_data.data = p;
|
p -= sizeof(uint32_t);
|
memcpy(p, &raw_data.size, sizeof(uint32_t));
|
}
|
uint64_t* p64 = reinterpret_cast<uint64_t*>(p);
|
p64 -= ips.size();
|
memcpy(p64, ips.data(), ips.size() * sizeof(uint64_t));
|
*--p64 = PERF_CONTEXT_USER;
|
if (callchain_data.ip_nr > 0) {
|
p64 -= callchain_data.ip_nr;
|
memcpy(p64, callchain_data.ips, callchain_data.ip_nr * sizeof(uint64_t));
|
}
|
callchain_data.ips = p64;
|
callchain_data.ip_nr += 1 + ips.size();
|
*--p64 = callchain_data.ip_nr;
|
CHECK_EQ(callchain_pos, static_cast<size_t>(reinterpret_cast<char*>(p64) - new_binary))
|
<< "record time " << time_data.time;
|
if (new_binary != binary_) {
|
UpdateBinary(new_binary);
|
}
|
}
|
|
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;
|
uint64_t context = header.misc == PERF_RECORD_MISC_KERNEL ? PERF_CONTEXT_KERNEL
|
: PERF_CONTEXT_USER;
|
bool first_frame = true;
|
for (size_t i = 0; i < callchain_data.ip_nr; ++i) {
|
if (ips[i] < PERF_CONTEXT_MAX) {
|
if (first_frame) {
|
first_frame = false;
|
} else {
|
if (ips[i] < 2) {
|
// A wrong ip address, erase it.
|
ips[i] = context;
|
} 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
|
}
|
}
|
} else {
|
context = ips[i];
|
}
|
}
|
}
|
|
std::vector<uint64_t> SampleRecord::GetCallChain(size_t* kernel_ip_count) const {
|
std::vector<uint64_t> ips;
|
bool in_kernel = InKernel();
|
ips.push_back(ip_data.ip);
|
*kernel_ip_count = in_kernel ? 1 : 0;
|
if ((sample_type & PERF_SAMPLE_CALLCHAIN) == 0) {
|
return ips;
|
}
|
bool first_ip = true;
|
for (uint64_t i = 0; i < callchain_data.ip_nr; ++i) {
|
uint64_t ip = callchain_data.ips[i];
|
if (ip >= PERF_CONTEXT_MAX) {
|
switch (ip) {
|
case PERF_CONTEXT_KERNEL:
|
CHECK(in_kernel) << "User space callchain followed by kernel callchain.";
|
break;
|
case PERF_CONTEXT_USER:
|
in_kernel = false;
|
break;
|
default:
|
LOG(DEBUG) << "Unexpected perf_context in callchain: " << std::hex << ip << std::dec;
|
}
|
} else {
|
if (first_ip) {
|
first_ip = false;
|
// Remove duplication with sample ip.
|
if (ip == ip_data.ip) {
|
continue;
|
}
|
}
|
ips.push_back(ip);
|
if (in_kernel) {
|
++*kernel_ip_count;
|
}
|
}
|
}
|
return ips;
|
}
|
|
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(SIMPLE_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);
|
}
|
}
|
|
CallChainRecord::CallChainRecord(char* p) : Record(p) {
|
const char* end = p + size();
|
p += header_size();
|
MoveFromBinaryFormat(pid, p);
|
MoveFromBinaryFormat(tid, p);
|
MoveFromBinaryFormat(chain_type, p);
|
MoveFromBinaryFormat(time, p);
|
MoveFromBinaryFormat(ip_nr, p);
|
ips = reinterpret_cast<uint64_t*>(p);
|
p += ip_nr * sizeof(uint64_t);
|
sps = reinterpret_cast<uint64_t*>(p);
|
p += ip_nr * sizeof(uint64_t);
|
CHECK_EQ(p, end);
|
}
|
|
CallChainRecord::CallChainRecord(pid_t pid, pid_t tid, CallChainJoiner::ChainType type,
|
uint64_t time, const std::vector<uint64_t>& ips,
|
const std::vector<uint64_t>& sps) {
|
CHECK_EQ(ips.size(), sps.size());
|
SetTypeAndMisc(SIMPLE_PERF_RECORD_CALLCHAIN, 0);
|
this->pid = pid;
|
this->tid = tid;
|
this->chain_type = static_cast<int>(type);
|
this->time = time;
|
this->ip_nr = ips.size();
|
SetSize(header_size() + (4 + ips.size() * 2) * sizeof(uint64_t));
|
char* new_binary = new char[size()];
|
char* p = new_binary;
|
MoveToBinaryFormat(header, p);
|
MoveToBinaryFormat(this->pid, p);
|
MoveToBinaryFormat(this->tid, p);
|
MoveToBinaryFormat(this->chain_type, p);
|
MoveToBinaryFormat(this->time, p);
|
MoveToBinaryFormat(this->ip_nr, p);
|
this->ips = reinterpret_cast<uint64_t*>(p);
|
MoveToBinaryFormat(ips.data(), ips.size(), p);
|
this->sps = reinterpret_cast<uint64_t*>(p);
|
MoveToBinaryFormat(sps.data(), sps.size(), p);
|
UpdateBinary(new_binary);
|
}
|
|
void CallChainRecord::DumpData(size_t indent) const {
|
const char* type_name = "";
|
switch (chain_type) {
|
case CallChainJoiner::ORIGINAL_OFFLINE: type_name = "ORIGINAL_OFFLINE"; break;
|
case CallChainJoiner::ORIGINAL_REMOTE: type_name = "ORIGINAL_REMOTE"; break;
|
case CallChainJoiner::JOINED_OFFLINE: type_name = "JOINED_OFFLINE"; break;
|
case CallChainJoiner::JOINED_REMOTE: type_name = "JOINED_REMOTE"; break;
|
}
|
PrintIndented(indent, "pid %u\n", pid);
|
PrintIndented(indent, "tid %u\n", tid);
|
PrintIndented(indent, "chain_type %s\n", type_name);
|
PrintIndented(indent, "time %" PRIu64 "\n", time);
|
PrintIndented(indent, "ip_nr %" PRIu64 "\n", ip_nr);
|
for (size_t i = 0; i < ip_nr; ++i) {
|
PrintIndented(indent + 1, "ip 0x%" PRIx64 ", sp 0x%" PRIx64 "\n", ips[i], sps[i]);
|
}
|
}
|
|
UnwindingResultRecord::UnwindingResultRecord(char* p) : Record(p) {
|
const char* end = p + size();
|
p += header_size();
|
MoveFromBinaryFormat(time, p);
|
MoveFromBinaryFormat(unwinding_result.used_time, p);
|
uint64_t stop_reason;
|
MoveFromBinaryFormat(stop_reason, p);
|
unwinding_result.stop_reason = static_cast<decltype(unwinding_result.stop_reason)>(stop_reason);
|
MoveFromBinaryFormat(unwinding_result.stop_info, p);
|
MoveFromBinaryFormat(unwinding_result.stack_start, p);
|
MoveFromBinaryFormat(unwinding_result.stack_end, p);
|
CHECK_EQ(p, end);
|
}
|
|
UnwindingResultRecord::UnwindingResultRecord(uint64_t time,
|
const UnwindingResult& unwinding_result) {
|
SetTypeAndMisc(SIMPLE_PERF_RECORD_UNWINDING_RESULT, 0);
|
SetSize(header_size() + 6 * sizeof(uint64_t));
|
this->time = time;
|
this->unwinding_result = unwinding_result;
|
char* new_binary = new char[size()];
|
char* p = new_binary;
|
MoveToBinaryFormat(header, p);
|
MoveToBinaryFormat(this->time, p);
|
MoveToBinaryFormat(unwinding_result.used_time, p);
|
uint64_t stop_reason = unwinding_result.stop_reason;
|
MoveToBinaryFormat(stop_reason, p);
|
MoveToBinaryFormat(unwinding_result.stop_info, p);
|
MoveToBinaryFormat(unwinding_result.stack_start, p);
|
MoveToBinaryFormat(unwinding_result.stack_end, p);
|
UpdateBinary(new_binary);
|
}
|
|
void UnwindingResultRecord::DumpData(size_t indent) const {
|
PrintIndented(indent, "time %" PRIu64 "\n", time);
|
PrintIndented(indent, "used_time %" PRIu64 "\n", unwinding_result.used_time);
|
static std::unordered_map<int, std::string> map = {
|
{UnwindingResult::UNKNOWN_REASON, "UNKNOWN_REASON"},
|
{UnwindingResult::EXCEED_MAX_FRAMES_LIMIT, "EXCEED_MAX_FRAME_LIMIT"},
|
{UnwindingResult::ACCESS_REG_FAILED, "ACCESS_REG_FAILED"},
|
{UnwindingResult::ACCESS_STACK_FAILED, "ACCESS_STACK_FAILED"},
|
{UnwindingResult::ACCESS_MEM_FAILED, "ACCESS_MEM_FAILED"},
|
{UnwindingResult::FIND_PROC_INFO_FAILED, "FIND_PROC_INFO_FAILED"},
|
{UnwindingResult::EXECUTE_DWARF_INSTRUCTION_FAILED, "EXECUTE_DWARF_INSTRUCTION_FAILED"},
|
{UnwindingResult::DIFFERENT_ARCH, "DIFFERENT_ARCH"},
|
{UnwindingResult::MAP_MISSING, "MAP_MISSING"},
|
};
|
PrintIndented(indent, "stop_reason %s\n", map[unwinding_result.stop_reason].c_str());
|
if (unwinding_result.stop_reason == UnwindingResult::ACCESS_REG_FAILED) {
|
PrintIndented(indent, "regno %" PRIu64 "\n", unwinding_result.stop_info);
|
} else if (unwinding_result.stop_reason == UnwindingResult::ACCESS_STACK_FAILED ||
|
unwinding_result.stop_reason == UnwindingResult::ACCESS_MEM_FAILED) {
|
PrintIndented(indent, "addr 0x%" PRIx64 "\n", unwinding_result.stop_info);
|
}
|
PrintIndented(indent, "stack_start 0x%" PRIx64 "\n", unwinding_result.stack_start);
|
PrintIndented(indent, "stack_end 0x%" PRIx64 "\n", unwinding_result.stack_end);
|
}
|
|
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));
|
case SIMPLE_PERF_RECORD_CALLCHAIN:
|
return std::unique_ptr<Record>(new CallChainRecord(p));
|
case SIMPLE_PERF_RECORD_UNWINDING_RESULT:
|
return std::unique_ptr<Record>(new UnwindingResultRecord(p));
|
case SIMPLE_PERF_RECORD_TRACING_DATA:
|
return std::unique_ptr<Record>(new TracingDataRecord(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);
|
}
|
