783 lines
26 KiB
C++
783 lines
26 KiB
C++
/*
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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 <inttypes.h>
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#include <algorithm>
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#include <functional>
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#include <map>
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#include <set>
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#include <string>
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#include <unordered_map>
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#include <unordered_set>
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#include <vector>
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#include <android-base/logging.h>
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#include <android-base/parseint.h>
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#include <android-base/stringprintf.h>
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#include <android-base/strings.h>
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#include "command.h"
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#include "dwarf_unwind.h"
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#include "environment.h"
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#include "event_attr.h"
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#include "event_type.h"
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#include "perf_regs.h"
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#include "record.h"
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#include "record_file.h"
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#include "sample_tree.h"
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#include "thread_tree.h"
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#include "utils.h"
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class Displayable {
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public:
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Displayable(const std::string& name) : name_(name), width_(name.size()) {
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}
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virtual ~Displayable() {
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}
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const std::string& Name() const {
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return name_;
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}
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size_t Width() const {
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return width_;
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}
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virtual std::string Show(const SampleEntry& sample) const = 0;
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void AdjustWidth(const SampleEntry& sample) {
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size_t size = Show(sample).size();
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width_ = std::max(width_, size);
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}
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private:
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const std::string name_;
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size_t width_;
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};
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class AccumulatedOverheadItem : public Displayable {
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public:
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AccumulatedOverheadItem(const SampleTree& sample_tree)
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: Displayable("Children"), sample_tree_(sample_tree) {
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}
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std::string Show(const SampleEntry& sample) const override {
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uint64_t period = sample.period + sample.accumulated_period;
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uint64_t total_period = sample_tree_.TotalPeriod();
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double percentage = (total_period != 0) ? 100.0 * period / total_period : 0.0;
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return android::base::StringPrintf("%.2lf%%", percentage);
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}
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private:
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const SampleTree& sample_tree_;
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};
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class SelfOverheadItem : public Displayable {
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public:
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SelfOverheadItem(const SampleTree& sample_tree, const std::string& name = "Self")
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: Displayable(name), sample_tree_(sample_tree) {
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}
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std::string Show(const SampleEntry& sample) const override {
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uint64_t period = sample.period;
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uint64_t total_period = sample_tree_.TotalPeriod();
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double percentage = (total_period != 0) ? 100.0 * period / total_period : 0.0;
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return android::base::StringPrintf("%.2lf%%", percentage);
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}
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private:
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const SampleTree& sample_tree_;
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};
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class SampleCountItem : public Displayable {
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public:
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SampleCountItem() : Displayable("Sample") {
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}
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std::string Show(const SampleEntry& sample) const override {
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return android::base::StringPrintf("%" PRId64, sample.sample_count);
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}
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};
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class Comparable {
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public:
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virtual ~Comparable() {
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}
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virtual int Compare(const SampleEntry& sample1, const SampleEntry& sample2) const = 0;
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};
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class PidItem : public Displayable, public Comparable {
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public:
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PidItem() : Displayable("Pid") {
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}
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int Compare(const SampleEntry& sample1, const SampleEntry& sample2) const override {
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return sample1.thread->pid - sample2.thread->pid;
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}
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std::string Show(const SampleEntry& sample) const override {
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return android::base::StringPrintf("%d", sample.thread->pid);
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}
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};
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class TidItem : public Displayable, public Comparable {
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public:
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TidItem() : Displayable("Tid") {
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}
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int Compare(const SampleEntry& sample1, const SampleEntry& sample2) const override {
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return sample1.thread->tid - sample2.thread->tid;
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}
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std::string Show(const SampleEntry& sample) const override {
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return android::base::StringPrintf("%d", sample.thread->tid);
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}
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};
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class CommItem : public Displayable, public Comparable {
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public:
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CommItem() : Displayable("Command") {
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}
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int Compare(const SampleEntry& sample1, const SampleEntry& sample2) const override {
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return strcmp(sample1.thread_comm, sample2.thread_comm);
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}
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std::string Show(const SampleEntry& sample) const override {
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return sample.thread_comm;
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}
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};
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class DsoItem : public Displayable, public Comparable {
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public:
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DsoItem(const std::string& name = "Shared Object") : Displayable(name) {
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}
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int Compare(const SampleEntry& sample1, const SampleEntry& sample2) const override {
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return strcmp(sample1.map->dso->Path().c_str(), sample2.map->dso->Path().c_str());
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}
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std::string Show(const SampleEntry& sample) const override {
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return sample.map->dso->Path();
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}
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};
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class SymbolItem : public Displayable, public Comparable {
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public:
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SymbolItem(const std::string& name = "Symbol") : Displayable(name) {
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}
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int Compare(const SampleEntry& sample1, const SampleEntry& sample2) const override {
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return strcmp(sample1.symbol->DemangledName(), sample2.symbol->DemangledName());
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}
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std::string Show(const SampleEntry& sample) const override {
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return sample.symbol->DemangledName();
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}
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};
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class DsoFromItem : public Displayable, public Comparable {
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public:
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DsoFromItem() : Displayable("Source Shared Object") {
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}
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int Compare(const SampleEntry& sample1, const SampleEntry& sample2) const override {
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return strcmp(sample1.branch_from.map->dso->Path().c_str(),
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sample2.branch_from.map->dso->Path().c_str());
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}
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std::string Show(const SampleEntry& sample) const override {
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return sample.branch_from.map->dso->Path();
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}
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};
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class DsoToItem : public DsoItem {
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public:
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DsoToItem() : DsoItem("Target Shared Object") {
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}
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};
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class SymbolFromItem : public Displayable, public Comparable {
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public:
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SymbolFromItem() : Displayable("Source Symbol") {
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}
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int Compare(const SampleEntry& sample1, const SampleEntry& sample2) const override {
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return strcmp(sample1.branch_from.symbol->DemangledName(),
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sample2.branch_from.symbol->DemangledName());
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}
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std::string Show(const SampleEntry& sample) const override {
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return sample.branch_from.symbol->DemangledName();
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}
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};
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class SymbolToItem : public SymbolItem {
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public:
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SymbolToItem() : SymbolItem("Target Symbol") {
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}
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};
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static std::set<std::string> branch_sort_keys = {
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"dso_from", "dso_to", "symbol_from", "symbol_to",
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};
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class ReportCommand : public Command {
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public:
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ReportCommand()
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: Command(
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"report", "report sampling information in perf.data",
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"Usage: simpleperf report [options]\n"
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" -b Use the branch-to addresses in sampled take branches instead of\n"
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" the instruction addresses. Only valid for perf.data recorded with\n"
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" -b/-j option.\n"
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" --children Print the overhead accumulated by appearing in the callchain.\n"
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" --comms comm1,comm2,...\n"
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" Report only for selected comms.\n"
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" --dsos dso1,dso2,...\n"
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" Report only for selected dsos.\n"
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" -g [callee|caller]\n"
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" Print call graph. If callee mode is used, the graph shows how\n"
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" functions are called from others. Otherwise, the graph shows how\n"
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" functions call others. Default is callee mode.\n"
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" -i <file> Specify path of record file, default is perf.data.\n"
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" -n Print the sample count for each item.\n"
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" --no-demangle Don't demangle symbol names.\n"
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" -o report_file_name Set report file name, default is stdout.\n"
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" --pid pid1,pid2,...\n"
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" Report only for selected pids.\n"
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" --sort key1,key2,...\n"
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" Select the keys to sort and print the report. Possible keys\n"
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" include pid, tid, comm, dso, symbol, dso_from, dso_to, symbol_from\n"
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" symbol_to. dso_from, dso_to, symbol_from, symbol_to can only be\n"
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" used with -b option. Default keys are \"comm,pid,tid,dso,symbol\"\n"
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" --symfs <dir> Look for files with symbols relative to this directory.\n"
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" --tids tid1,tid2,...\n"
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" Report only for selected tids.\n"
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" --vmlinux <file>\n"
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" Parse kernel symbols from <file>.\n"),
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record_filename_("perf.data"),
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record_file_arch_(GetBuildArch()),
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use_branch_address_(false),
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accumulate_callchain_(false),
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print_callgraph_(false),
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callgraph_show_callee_(true),
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report_fp_(nullptr) {
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compare_sample_func_t compare_sample_callback = std::bind(
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&ReportCommand::CompareSampleEntry, this, std::placeholders::_1, std::placeholders::_2);
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sample_tree_ =
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std::unique_ptr<SampleTree>(new SampleTree(&thread_tree_, compare_sample_callback));
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}
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bool Run(const std::vector<std::string>& args);
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private:
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bool ParseOptions(const std::vector<std::string>& args);
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bool ReadEventAttrFromRecordFile();
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void ReadSampleTreeFromRecordFile();
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void ProcessRecord(std::unique_ptr<Record> record);
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void ProcessSampleRecord(const SampleRecord& r);
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bool ReadFeaturesFromRecordFile();
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int CompareSampleEntry(const SampleEntry& sample1, const SampleEntry& sample2);
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bool PrintReport();
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void PrintReportContext();
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void CollectReportWidth();
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void CollectReportEntryWidth(const SampleEntry& sample);
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void PrintReportHeader();
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void PrintReportEntry(const SampleEntry& sample);
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void PrintCallGraph(const SampleEntry& sample);
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void PrintCallGraphEntry(size_t depth, std::string prefix, const std::unique_ptr<CallChainNode>& node,
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uint64_t parent_period, bool last);
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std::string record_filename_;
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ArchType record_file_arch_;
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std::unique_ptr<RecordFileReader> record_file_reader_;
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perf_event_attr event_attr_;
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std::vector<std::unique_ptr<Displayable>> displayable_items_;
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std::vector<Comparable*> comparable_items_;
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ThreadTree thread_tree_;
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std::unique_ptr<SampleTree> sample_tree_;
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bool use_branch_address_;
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std::string record_cmdline_;
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bool accumulate_callchain_;
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bool print_callgraph_;
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bool callgraph_show_callee_;
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std::string report_filename_;
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FILE* report_fp_;
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};
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bool ReportCommand::Run(const std::vector<std::string>& args) {
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// 1. Parse options.
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if (!ParseOptions(args)) {
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return false;
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}
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// 2. Read record file and build SampleTree.
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record_file_reader_ = RecordFileReader::CreateInstance(record_filename_);
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if (record_file_reader_ == nullptr) {
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return false;
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}
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if (!ReadEventAttrFromRecordFile()) {
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return false;
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}
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// Read features first to prepare build ids used when building SampleTree.
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if (!ReadFeaturesFromRecordFile()) {
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return false;
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}
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ScopedCurrentArch scoped_arch(record_file_arch_);
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ReadSampleTreeFromRecordFile();
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// 3. Show collected information.
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if (!PrintReport()) {
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return false;
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}
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return true;
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}
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bool ReportCommand::ParseOptions(const std::vector<std::string>& args) {
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bool demangle = true;
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std::string symfs_dir;
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std::string vmlinux;
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bool print_sample_count = false;
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std::vector<std::string> sort_keys = {"comm", "pid", "tid", "dso", "symbol"};
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std::unordered_set<std::string> comm_filter;
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std::unordered_set<std::string> dso_filter;
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std::unordered_set<int> pid_filter;
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std::unordered_set<int> tid_filter;
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for (size_t i = 0; i < args.size(); ++i) {
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if (args[i] == "-b") {
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use_branch_address_ = true;
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} else if (args[i] == "--children") {
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accumulate_callchain_ = true;
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} else if (args[i] == "--comms" || args[i] == "--dsos") {
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std::unordered_set<std::string>& filter = (args[i] == "--comms" ? comm_filter : dso_filter);
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if (!NextArgumentOrError(args, &i)) {
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return false;
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}
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std::vector<std::string> strs = android::base::Split(args[i], ",");
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filter.insert(strs.begin(), strs.end());
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} else if (args[i] == "-g") {
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print_callgraph_ = true;
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accumulate_callchain_ = true;
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if (i + 1 < args.size() && args[i + 1][0] != '-') {
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++i;
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if (args[i] == "callee") {
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callgraph_show_callee_ = true;
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} else if (args[i] == "caller") {
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callgraph_show_callee_ = false;
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} else {
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LOG(ERROR) << "Unknown argument with -g option: " << args[i];
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return false;
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}
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}
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} else if (args[i] == "-i") {
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if (!NextArgumentOrError(args, &i)) {
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return false;
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}
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record_filename_ = args[i];
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} else if (args[i] == "-n") {
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print_sample_count = true;
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} else if (args[i] == "--no-demangle") {
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demangle = false;
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} else if (args[i] == "-o") {
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if (!NextArgumentOrError(args, &i)) {
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return false;
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}
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report_filename_ = args[i];
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} else if (args[i] == "--pids" || args[i] == "--tids") {
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if (!NextArgumentOrError(args, &i)) {
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return false;
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}
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std::vector<std::string> strs = android::base::Split(args[i], ",");
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std::vector<int> ids;
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for (const auto& s : strs) {
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int id;
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if (!android::base::ParseInt(s.c_str(), &id, 0)) {
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LOG(ERROR) << "invalid id in " << args[i] << " option: " << s;
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return false;
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}
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ids.push_back(id);
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}
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std::unordered_set<int>& filter = (args[i] == "--pids" ? pid_filter : tid_filter);
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filter.insert(ids.begin(), ids.end());
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} else if (args[i] == "--sort") {
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if (!NextArgumentOrError(args, &i)) {
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return false;
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}
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sort_keys = android::base::Split(args[i], ",");
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} else if (args[i] == "--symfs") {
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if (!NextArgumentOrError(args, &i)) {
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return false;
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}
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symfs_dir = args[i];
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} else if (args[i] == "--vmlinux") {
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if (!NextArgumentOrError(args, &i)) {
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return false;
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}
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vmlinux = args[i];
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} else {
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ReportUnknownOption(args, i);
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return false;
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}
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}
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Dso::SetDemangle(demangle);
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if (!Dso::SetSymFsDir(symfs_dir)) {
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return false;
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}
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if (!vmlinux.empty()) {
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Dso::SetVmlinux(vmlinux);
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}
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if (!accumulate_callchain_) {
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displayable_items_.push_back(
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std::unique_ptr<Displayable>(new SelfOverheadItem(*sample_tree_, "Overhead")));
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} else {
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displayable_items_.push_back(
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std::unique_ptr<Displayable>(new AccumulatedOverheadItem(*sample_tree_)));
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displayable_items_.push_back(std::unique_ptr<Displayable>(new SelfOverheadItem(*sample_tree_)));
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}
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if (print_sample_count) {
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displayable_items_.push_back(std::unique_ptr<Displayable>(new SampleCountItem));
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}
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for (auto& key : sort_keys) {
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if (!use_branch_address_ && branch_sort_keys.find(key) != branch_sort_keys.end()) {
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LOG(ERROR) << "sort key '" << key << "' can only be used with -b option.";
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return false;
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}
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if (key == "pid") {
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PidItem* item = new PidItem;
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displayable_items_.push_back(std::unique_ptr<Displayable>(item));
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comparable_items_.push_back(item);
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} else if (key == "tid") {
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TidItem* item = new TidItem;
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displayable_items_.push_back(std::unique_ptr<Displayable>(item));
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comparable_items_.push_back(item);
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} else if (key == "comm") {
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CommItem* item = new CommItem;
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displayable_items_.push_back(std::unique_ptr<Displayable>(item));
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comparable_items_.push_back(item);
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} else if (key == "dso") {
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DsoItem* item = new DsoItem;
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displayable_items_.push_back(std::unique_ptr<Displayable>(item));
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comparable_items_.push_back(item);
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} else if (key == "symbol") {
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SymbolItem* item = new SymbolItem;
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displayable_items_.push_back(std::unique_ptr<Displayable>(item));
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comparable_items_.push_back(item);
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} else if (key == "dso_from") {
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DsoFromItem* item = new DsoFromItem;
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displayable_items_.push_back(std::unique_ptr<Displayable>(item));
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comparable_items_.push_back(item);
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} else if (key == "dso_to") {
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DsoToItem* item = new DsoToItem;
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displayable_items_.push_back(std::unique_ptr<Displayable>(item));
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comparable_items_.push_back(item);
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} else if (key == "symbol_from") {
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SymbolFromItem* item = new SymbolFromItem;
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displayable_items_.push_back(std::unique_ptr<Displayable>(item));
|
|
comparable_items_.push_back(item);
|
|
} else if (key == "symbol_to") {
|
|
SymbolToItem* item = new SymbolToItem;
|
|
displayable_items_.push_back(std::unique_ptr<Displayable>(item));
|
|
comparable_items_.push_back(item);
|
|
} else {
|
|
LOG(ERROR) << "Unknown sort key: " << key;
|
|
return false;
|
|
}
|
|
}
|
|
sample_tree_->SetFilters(pid_filter, tid_filter, comm_filter, dso_filter);
|
|
return true;
|
|
}
|
|
|
|
bool ReportCommand::ReadEventAttrFromRecordFile() {
|
|
const std::vector<PerfFileFormat::FileAttr>& attrs = record_file_reader_->AttrSection();
|
|
if (attrs.size() != 1) {
|
|
LOG(ERROR) << "record file contains " << attrs.size() << " attrs";
|
|
return false;
|
|
}
|
|
event_attr_ = attrs[0].attr;
|
|
if (use_branch_address_ && (event_attr_.sample_type & PERF_SAMPLE_BRANCH_STACK) == 0) {
|
|
LOG(ERROR) << record_filename_ << " is not recorded with branch stack sampling option.";
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void ReportCommand::ReadSampleTreeFromRecordFile() {
|
|
thread_tree_.AddThread(0, 0, "swapper");
|
|
record_file_reader_->ReadDataSection([this](std::unique_ptr<Record> record) {
|
|
ProcessRecord(std::move(record));
|
|
return true;
|
|
});
|
|
}
|
|
|
|
void ReportCommand::ProcessRecord(std::unique_ptr<Record> record) {
|
|
BuildThreadTree(*record, &thread_tree_);
|
|
if (record->header.type == PERF_RECORD_SAMPLE) {
|
|
ProcessSampleRecord(*static_cast<const SampleRecord*>(record.get()));
|
|
}
|
|
}
|
|
|
|
void ReportCommand::ProcessSampleRecord(const SampleRecord& r) {
|
|
if (use_branch_address_ && (r.sample_type & PERF_SAMPLE_BRANCH_STACK)) {
|
|
for (auto& item : r.branch_stack_data.stack) {
|
|
if (item.from != 0 && item.to != 0) {
|
|
sample_tree_->AddBranchSample(r.tid_data.pid, r.tid_data.tid, item.from, item.to,
|
|
item.flags, r.time_data.time, r.period_data.period);
|
|
}
|
|
}
|
|
} else {
|
|
bool in_kernel = (r.header.misc & PERF_RECORD_MISC_CPUMODE_MASK) == PERF_RECORD_MISC_KERNEL;
|
|
SampleEntry* sample = sample_tree_->AddSample(r.tid_data.pid, r.tid_data.tid, r.ip_data.ip,
|
|
r.time_data.time, r.period_data.period, in_kernel);
|
|
if (sample == nullptr) {
|
|
return;
|
|
}
|
|
if (accumulate_callchain_) {
|
|
std::vector<uint64_t> ips;
|
|
if (r.sample_type & PERF_SAMPLE_CALLCHAIN) {
|
|
ips.insert(ips.end(), r.callchain_data.ips.begin(), r.callchain_data.ips.end());
|
|
}
|
|
// Use stack_user_data.data.size() instead of stack_user_data.dyn_size, to make up for
|
|
// the missing kernel patch in N9. See b/22612370.
|
|
if ((r.sample_type & PERF_SAMPLE_REGS_USER) && (r.regs_user_data.reg_mask != 0) &&
|
|
(r.sample_type & PERF_SAMPLE_STACK_USER) && (!r.stack_user_data.data.empty())) {
|
|
RegSet regs = CreateRegSet(r.regs_user_data.reg_mask, r.regs_user_data.regs);
|
|
std::vector<char> stack(r.stack_user_data.data.begin(),
|
|
r.stack_user_data.data.begin() + r.stack_user_data.data.size());
|
|
std::vector<uint64_t> unwind_ips =
|
|
UnwindCallChain(ScopedCurrentArch::GetCurrentArch(), *sample->thread, regs, stack);
|
|
if (!unwind_ips.empty()) {
|
|
ips.push_back(PERF_CONTEXT_USER);
|
|
ips.insert(ips.end(), unwind_ips.begin(), unwind_ips.end());
|
|
}
|
|
}
|
|
|
|
std::vector<SampleEntry*> callchain;
|
|
callchain.push_back(sample);
|
|
|
|
bool first_ip = true;
|
|
for (auto& ip : ips) {
|
|
if (ip >= PERF_CONTEXT_MAX) {
|
|
switch (ip) {
|
|
case PERF_CONTEXT_KERNEL:
|
|
in_kernel = true;
|
|
break;
|
|
case PERF_CONTEXT_USER:
|
|
in_kernel = false;
|
|
break;
|
|
default:
|
|
LOG(ERROR) << "Unexpected perf_context in callchain: " << ip;
|
|
}
|
|
} else {
|
|
if (first_ip) {
|
|
first_ip = false;
|
|
// Remove duplication with sampled ip.
|
|
if (ip == r.ip_data.ip) {
|
|
continue;
|
|
}
|
|
}
|
|
SampleEntry* sample =
|
|
sample_tree_->AddCallChainSample(r.tid_data.pid, r.tid_data.tid, ip, r.time_data.time,
|
|
r.period_data.period, in_kernel, callchain);
|
|
callchain.push_back(sample);
|
|
}
|
|
}
|
|
|
|
if (print_callgraph_) {
|
|
std::set<SampleEntry*> added_set;
|
|
if (!callgraph_show_callee_) {
|
|
std::reverse(callchain.begin(), callchain.end());
|
|
}
|
|
while (callchain.size() >= 2) {
|
|
SampleEntry* sample = callchain[0];
|
|
callchain.erase(callchain.begin());
|
|
// Add only once for recursive calls on callchain.
|
|
if (added_set.find(sample) != added_set.end()) {
|
|
continue;
|
|
}
|
|
added_set.insert(sample);
|
|
sample_tree_->InsertCallChainForSample(sample, callchain, r.period_data.period);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ReportCommand::ReadFeaturesFromRecordFile() {
|
|
std::vector<BuildIdRecord> records = record_file_reader_->ReadBuildIdFeature();
|
|
std::vector<std::pair<std::string, BuildId>> build_ids;
|
|
for (auto& r : records) {
|
|
build_ids.push_back(std::make_pair(r.filename, r.build_id));
|
|
}
|
|
Dso::SetBuildIds(build_ids);
|
|
|
|
std::string arch = record_file_reader_->ReadFeatureString(PerfFileFormat::FEAT_ARCH);
|
|
if (!arch.empty()) {
|
|
record_file_arch_ = GetArchType(arch);
|
|
if (record_file_arch_ == ARCH_UNSUPPORTED) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
std::vector<std::string> cmdline = record_file_reader_->ReadCmdlineFeature();
|
|
if (!cmdline.empty()) {
|
|
record_cmdline_ = android::base::Join(cmdline, ' ');
|
|
}
|
|
return true;
|
|
}
|
|
|
|
int ReportCommand::CompareSampleEntry(const SampleEntry& sample1, const SampleEntry& sample2) {
|
|
for (auto& item : comparable_items_) {
|
|
int result = item->Compare(sample1, sample2);
|
|
if (result != 0) {
|
|
return result;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool ReportCommand::PrintReport() {
|
|
std::unique_ptr<FILE, decltype(&fclose)> file_handler(nullptr, fclose);
|
|
if (report_filename_.empty()) {
|
|
report_fp_ = stdout;
|
|
} else {
|
|
report_fp_ = fopen(report_filename_.c_str(), "w");
|
|
if (report_fp_ == nullptr) {
|
|
PLOG(ERROR) << "failed to open file " << report_filename_;
|
|
return false;
|
|
}
|
|
file_handler.reset(report_fp_);
|
|
}
|
|
PrintReportContext();
|
|
CollectReportWidth();
|
|
PrintReportHeader();
|
|
sample_tree_->VisitAllSamples(
|
|
std::bind(&ReportCommand::PrintReportEntry, this, std::placeholders::_1));
|
|
fflush(report_fp_);
|
|
if (ferror(report_fp_) != 0) {
|
|
PLOG(ERROR) << "print report failed";
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void ReportCommand::PrintReportContext() {
|
|
const EventType* event_type = FindEventTypeByConfig(event_attr_.type, event_attr_.config);
|
|
std::string event_type_name;
|
|
if (event_type != nullptr) {
|
|
event_type_name = event_type->name;
|
|
} else {
|
|
event_type_name =
|
|
android::base::StringPrintf("(type %u, config %llu)", event_attr_.type, event_attr_.config);
|
|
}
|
|
if (!record_cmdline_.empty()) {
|
|
fprintf(report_fp_, "Cmdline: %s\n", record_cmdline_.c_str());
|
|
}
|
|
fprintf(report_fp_, "Samples: %" PRIu64 " of event '%s'\n", sample_tree_->TotalSamples(),
|
|
event_type_name.c_str());
|
|
fprintf(report_fp_, "Event count: %" PRIu64 "\n\n", sample_tree_->TotalPeriod());
|
|
}
|
|
|
|
void ReportCommand::CollectReportWidth() {
|
|
sample_tree_->VisitAllSamples(
|
|
std::bind(&ReportCommand::CollectReportEntryWidth, this, std::placeholders::_1));
|
|
}
|
|
|
|
void ReportCommand::CollectReportEntryWidth(const SampleEntry& sample) {
|
|
for (auto& item : displayable_items_) {
|
|
item->AdjustWidth(sample);
|
|
}
|
|
}
|
|
|
|
void ReportCommand::PrintReportHeader() {
|
|
for (size_t i = 0; i < displayable_items_.size(); ++i) {
|
|
auto& item = displayable_items_[i];
|
|
if (i != displayable_items_.size() - 1) {
|
|
fprintf(report_fp_, "%-*s ", static_cast<int>(item->Width()), item->Name().c_str());
|
|
} else {
|
|
fprintf(report_fp_, "%s\n", item->Name().c_str());
|
|
}
|
|
}
|
|
}
|
|
|
|
void ReportCommand::PrintReportEntry(const SampleEntry& sample) {
|
|
for (size_t i = 0; i < displayable_items_.size(); ++i) {
|
|
auto& item = displayable_items_[i];
|
|
if (i != displayable_items_.size() - 1) {
|
|
fprintf(report_fp_, "%-*s ", static_cast<int>(item->Width()), item->Show(sample).c_str());
|
|
} else {
|
|
fprintf(report_fp_, "%s\n", item->Show(sample).c_str());
|
|
}
|
|
}
|
|
if (print_callgraph_) {
|
|
PrintCallGraph(sample);
|
|
}
|
|
}
|
|
|
|
void ReportCommand::PrintCallGraph(const SampleEntry& sample) {
|
|
std::string prefix = " ";
|
|
fprintf(report_fp_, "%s|\n", prefix.c_str());
|
|
fprintf(report_fp_, "%s-- %s\n", prefix.c_str(), sample.symbol->DemangledName());
|
|
prefix.append(3, ' ');
|
|
for (size_t i = 0; i < sample.callchain.children.size(); ++i) {
|
|
PrintCallGraphEntry(1, prefix, sample.callchain.children[i], sample.callchain.children_period,
|
|
(i + 1 == sample.callchain.children.size()));
|
|
}
|
|
}
|
|
|
|
void ReportCommand::PrintCallGraphEntry(size_t depth, std::string prefix,
|
|
const std::unique_ptr<CallChainNode>& node,
|
|
uint64_t parent_period, bool last) {
|
|
if (depth > 20) {
|
|
LOG(WARNING) << "truncated callgraph at depth " << depth;
|
|
return;
|
|
}
|
|
prefix += "|";
|
|
fprintf(report_fp_, "%s\n", prefix.c_str());
|
|
if (last) {
|
|
prefix.back() = ' ';
|
|
}
|
|
std::string percentage_s = "-- ";
|
|
if (node->period + node->children_period != parent_period) {
|
|
double percentage = 100.0 * (node->period + node->children_period) / parent_period;
|
|
percentage_s = android::base::StringPrintf("--%.2lf%%-- ", percentage);
|
|
}
|
|
fprintf(report_fp_, "%s%s%s\n", prefix.c_str(), percentage_s.c_str(), node->chain[0]->symbol->DemangledName());
|
|
prefix.append(percentage_s.size(), ' ');
|
|
for (size_t i = 1; i < node->chain.size(); ++i) {
|
|
fprintf(report_fp_, "%s%s\n", prefix.c_str(), node->chain[i]->symbol->DemangledName());
|
|
}
|
|
|
|
for (size_t i = 0; i < node->children.size(); ++i) {
|
|
PrintCallGraphEntry(depth + 1, prefix, node->children[i], node->children_period,
|
|
(i + 1 == node->children.size()));
|
|
}
|
|
}
|
|
|
|
void RegisterReportCommand() {
|
|
RegisterCommand("report", [] { return std::unique_ptr<Command>(new ReportCommand()); });
|
|
}
|