849 lines
30 KiB
C++
849 lines
30 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/file.h>
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#include <android-base/logging.h>
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#include <android-base/parsedouble.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 "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 "tracing.h"
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#include "utils.h"
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namespace {
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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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struct BranchFromEntry {
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const MapEntry* map;
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const Symbol* symbol;
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uint64_t vaddr_in_file;
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uint64_t flags;
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BranchFromEntry()
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: map(nullptr), symbol(nullptr), vaddr_in_file(0), flags(0) {}
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};
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struct SampleEntry {
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uint64_t time;
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uint64_t period;
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// accumuated when appearing in other sample's callchain
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uint64_t accumulated_period;
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uint64_t sample_count;
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const ThreadEntry* thread;
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const char* thread_comm;
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const MapEntry* map;
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const Symbol* symbol;
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uint64_t vaddr_in_file;
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BranchFromEntry branch_from;
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// a callchain tree representing all callchains in the sample
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CallChainRoot<SampleEntry> callchain;
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SampleEntry(uint64_t time, uint64_t period, uint64_t accumulated_period,
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uint64_t sample_count, const ThreadEntry* thread,
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const MapEntry* map, const Symbol* symbol, uint64_t vaddr_in_file)
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: time(time),
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period(period),
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accumulated_period(accumulated_period),
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sample_count(sample_count),
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thread(thread),
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thread_comm(thread->comm),
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map(map),
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symbol(symbol),
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vaddr_in_file(vaddr_in_file) {}
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// The data member 'callchain' can only move, not copy.
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SampleEntry(SampleEntry&&) = default;
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SampleEntry(SampleEntry&) = delete;
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uint64_t GetPeriod() const {
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return period;
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}
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};
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struct SampleTree {
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std::vector<SampleEntry*> samples;
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uint64_t total_samples;
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uint64_t total_period;
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uint64_t total_error_callchains;
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};
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BUILD_COMPARE_VALUE_FUNCTION(CompareVaddrInFile, vaddr_in_file);
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BUILD_DISPLAY_HEX64_FUNCTION(DisplayVaddrInFile, vaddr_in_file);
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class ReportCmdSampleTreeBuilder
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: public SampleTreeBuilder<SampleEntry, uint64_t> {
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public:
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ReportCmdSampleTreeBuilder(SampleComparator<SampleEntry> sample_comparator,
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ThreadTree* thread_tree)
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: SampleTreeBuilder(sample_comparator),
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thread_tree_(thread_tree),
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total_samples_(0),
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total_period_(0),
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total_error_callchains_(0) {}
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void SetFilters(const std::unordered_set<int>& pid_filter,
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const std::unordered_set<int>& tid_filter,
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const std::unordered_set<std::string>& comm_filter,
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const std::unordered_set<std::string>& dso_filter,
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const std::unordered_set<std::string>& symbol_filter) {
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pid_filter_ = pid_filter;
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tid_filter_ = tid_filter;
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comm_filter_ = comm_filter;
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dso_filter_ = dso_filter;
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symbol_filter_ = symbol_filter;
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}
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SampleTree GetSampleTree() {
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AddCallChainDuplicateInfo();
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SampleTree sample_tree;
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sample_tree.samples = GetSamples();
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sample_tree.total_samples = total_samples_;
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sample_tree.total_period = total_period_;
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sample_tree.total_error_callchains = total_error_callchains_;
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return sample_tree;
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}
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protected:
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SampleEntry* CreateSample(const SampleRecord& r, bool in_kernel,
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uint64_t* acc_info) override {
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const ThreadEntry* thread =
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thread_tree_->FindThreadOrNew(r.tid_data.pid, r.tid_data.tid);
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const MapEntry* map =
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thread_tree_->FindMap(thread, r.ip_data.ip, in_kernel);
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uint64_t vaddr_in_file;
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const Symbol* symbol =
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thread_tree_->FindSymbol(map, r.ip_data.ip, &vaddr_in_file);
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*acc_info = r.period_data.period;
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return InsertSample(std::unique_ptr<SampleEntry>(
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new SampleEntry(r.time_data.time, r.period_data.period, 0, 1, thread,
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map, symbol, vaddr_in_file)));
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}
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SampleEntry* CreateBranchSample(const SampleRecord& r,
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const BranchStackItemType& item) override {
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const ThreadEntry* thread =
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thread_tree_->FindThreadOrNew(r.tid_data.pid, r.tid_data.tid);
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const MapEntry* from_map = thread_tree_->FindMap(thread, item.from);
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uint64_t from_vaddr_in_file;
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const Symbol* from_symbol =
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thread_tree_->FindSymbol(from_map, item.from, &from_vaddr_in_file);
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const MapEntry* to_map = thread_tree_->FindMap(thread, item.to);
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uint64_t to_vaddr_in_file;
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const Symbol* to_symbol =
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thread_tree_->FindSymbol(to_map, item.to, &to_vaddr_in_file);
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std::unique_ptr<SampleEntry> sample(
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new SampleEntry(r.time_data.time, r.period_data.period, 0, 1, thread,
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to_map, to_symbol, to_vaddr_in_file));
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sample->branch_from.map = from_map;
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sample->branch_from.symbol = from_symbol;
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sample->branch_from.vaddr_in_file = from_vaddr_in_file;
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sample->branch_from.flags = item.flags;
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return InsertSample(std::move(sample));
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}
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SampleEntry* CreateCallChainSample(const SampleEntry* sample, uint64_t ip,
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bool in_kernel,
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const std::vector<SampleEntry*>& callchain,
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const uint64_t& acc_info) override {
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const ThreadEntry* thread = sample->thread;
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const MapEntry* map = thread_tree_->FindMap(thread, ip, in_kernel);
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if (thread_tree_->IsUnknownDso(map->dso)) {
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// The unwinders can give wrong ip addresses, which can't map to a valid dso. Skip them.
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total_error_callchains_++;
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return nullptr;
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}
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uint64_t vaddr_in_file;
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const Symbol* symbol = thread_tree_->FindSymbol(map, ip, &vaddr_in_file);
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std::unique_ptr<SampleEntry> callchain_sample(new SampleEntry(
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sample->time, 0, acc_info, 0, thread, map, symbol, vaddr_in_file));
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callchain_sample->thread_comm = sample->thread_comm;
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return InsertCallChainSample(std::move(callchain_sample), callchain);
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}
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const ThreadEntry* GetThreadOfSample(SampleEntry* sample) override {
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return sample->thread;
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}
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uint64_t GetPeriodForCallChain(const uint64_t& acc_info) override {
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return acc_info;
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}
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bool FilterSample(const SampleEntry* sample) override {
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if (!pid_filter_.empty() &&
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pid_filter_.find(sample->thread->pid) == pid_filter_.end()) {
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return false;
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}
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if (!tid_filter_.empty() &&
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tid_filter_.find(sample->thread->tid) == tid_filter_.end()) {
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return false;
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}
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if (!comm_filter_.empty() &&
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comm_filter_.find(sample->thread_comm) == comm_filter_.end()) {
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return false;
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}
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if (!dso_filter_.empty() &&
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dso_filter_.find(sample->map->dso->Path()) == dso_filter_.end()) {
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return false;
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}
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if (!symbol_filter_.empty() &&
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symbol_filter_.find(sample->symbol->DemangledName()) ==
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symbol_filter_.end()) {
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return false;
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}
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return true;
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}
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void UpdateSummary(const SampleEntry* sample) override {
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total_samples_ += sample->sample_count;
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total_period_ += sample->period;
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}
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void MergeSample(SampleEntry* sample1, SampleEntry* sample2) override {
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sample1->period += sample2->period;
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sample1->accumulated_period += sample2->accumulated_period;
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sample1->sample_count += sample2->sample_count;
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}
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private:
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ThreadTree* thread_tree_;
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std::unordered_set<int> pid_filter_;
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std::unordered_set<int> tid_filter_;
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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<std::string> symbol_filter_;
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uint64_t total_samples_;
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uint64_t total_period_;
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uint64_t total_error_callchains_;
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};
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struct SampleTreeBuilderOptions {
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SampleComparator<SampleEntry> comparator;
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ThreadTree* thread_tree;
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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<std::string> symbol_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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bool use_branch_address;
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bool accumulate_callchain;
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bool build_callchain;
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bool use_caller_as_callchain_root;
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bool strict_unwind_arch_check;
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std::unique_ptr<ReportCmdSampleTreeBuilder> CreateSampleTreeBuilder() {
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std::unique_ptr<ReportCmdSampleTreeBuilder> builder(
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new ReportCmdSampleTreeBuilder(comparator, thread_tree));
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builder->SetFilters(pid_filter, tid_filter, comm_filter, dso_filter, symbol_filter);
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builder->SetBranchSampleOption(use_branch_address);
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builder->SetCallChainSampleOptions(accumulate_callchain, build_callchain,
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use_caller_as_callchain_root, strict_unwind_arch_check);
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return builder;
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}
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};
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using ReportCmdSampleTreeSorter = SampleTreeSorter<SampleEntry>;
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using ReportCmdSampleTreeDisplayer =
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SampleTreeDisplayer<SampleEntry, SampleTree>;
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using ReportCmdCallgraphDisplayer =
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CallgraphDisplayer<SampleEntry, CallChainNode<SampleEntry>>;
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class ReportCmdCallgraphDisplayerWithVaddrInFile
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: public ReportCmdCallgraphDisplayer {
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protected:
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std::string PrintSampleName(const SampleEntry* sample) override {
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return android::base::StringPrintf("%s [+0x%" PRIx64 "]",
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sample->symbol->DemangledName(),
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sample->vaddr_in_file);
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}
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};
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struct EventAttrWithName {
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perf_event_attr attr;
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std::string name;
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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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// clang-format off
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"Usage: simpleperf report [options]\n"
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"The default options are: -i perf.data --sort comm,pid,tid,dso,symbol.\n"
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"-b Use the branch-to addresses in sampled take branches instead of the\n"
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" instruction addresses. Only valid for perf.data recorded with -b/-j\n"
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" option.\n"
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"--children Print the overhead accumulated by appearing in the callchain.\n"
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"--comms comm1,comm2,... Report only for selected comms.\n"
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"--dsos dso1,dso2,... Report only for selected dsos.\n"
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"--full-callgraph Print full call graph. Used with -g option. By default,\n"
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" brief call graph is printed.\n"
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"-g [callee|caller] Print call graph. If callee mode is used, the graph\n"
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" shows how functions are called from others. Otherwise,\n"
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" the graph shows how functions call others.\n"
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" Default is caller mode.\n"
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"-i <file> Specify path of record file, default is perf.data.\n"
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"--kallsyms <file> Set the file to read kernel symbols.\n"
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"--max-stack <frames> Set max stack frames shown when printing call graph.\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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"--no-show-ip Don't show vaddr in file for unknown symbols.\n"
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"-o report_file_name Set report file name, default is stdout.\n"
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"--percent-limit <percent> Set min percentage shown when printing call graph.\n"
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"--pids pid1,pid2,... Report only for selected pids.\n"
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"--raw-period Report period count instead of period percentage.\n"
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"--sort key1,key2,... Select keys used to sort and print the report. The\n"
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" appearance order of keys decides the order of keys used\n"
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" to sort and print the report.\n"
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" Possible keys include:\n"
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" pid -- process id\n"
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" tid -- thread id\n"
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" comm -- thread name (can be changed during\n"
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" the lifetime of a thread)\n"
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" dso -- shared library\n"
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" symbol -- function name in the shared library\n"
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" vaddr_in_file -- virtual address in the shared\n"
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" library\n"
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" Keys can only be used with -b option:\n"
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" dso_from -- shared library branched from\n"
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" dso_to -- shared library branched to\n"
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" symbol_from -- name of function branched from\n"
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" symbol_to -- name of function branched to\n"
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" The default sort keys are:\n"
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" comm,pid,tid,dso,symbol\n"
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"--symbols symbol1;symbol2;... Report only for selected symbols.\n"
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"--symfs <dir> Look for files with symbols relative to this directory.\n"
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"--tids tid1,tid2,... Report only for selected tids.\n"
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"--vmlinux <file> Parse kernel symbols from <file>.\n"
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// clang-format on
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),
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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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system_wide_collection_(false),
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accumulate_callchain_(false),
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print_callgraph_(false),
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callgraph_show_callee_(false),
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callgraph_max_stack_(UINT32_MAX),
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callgraph_percent_limit_(0),
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raw_period_(false),
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brief_callgraph_(true) {}
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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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bool ReadFeaturesFromRecordFile();
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bool ReadSampleTreeFromRecordFile();
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bool ProcessRecord(std::unique_ptr<Record> record);
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bool ProcessTracingData(const std::vector<char>& data);
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bool PrintReport();
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void PrintReportContext(FILE* fp);
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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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std::vector<EventAttrWithName> event_attrs_;
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ThreadTree thread_tree_;
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// Create a SampleTreeBuilder and SampleTree for each event_attr.
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std::vector<SampleTree> sample_tree_;
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SampleTreeBuilderOptions sample_tree_builder_options_;
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std::vector<std::unique_ptr<ReportCmdSampleTreeBuilder>> sample_tree_builder_;
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std::unique_ptr<ReportCmdSampleTreeSorter> sample_tree_sorter_;
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std::unique_ptr<ReportCmdSampleTreeDisplayer> sample_tree_displayer_;
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bool use_branch_address_;
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std::string record_cmdline_;
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bool system_wide_collection_;
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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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uint32_t callgraph_max_stack_;
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double callgraph_percent_limit_;
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bool raw_period_;
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bool brief_callgraph_;
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std::string report_filename_;
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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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if (!ReadSampleTreeFromRecordFile()) {
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return false;
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}
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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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bool show_ip_for_unknown_symbol = 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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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 =
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(args[i] == "--comms" ? sample_tree_builder_options_.comm_filter
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: sample_tree_builder_options_.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] == "--full-callgraph") {
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brief_callgraph_ = false;
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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 {
|
|
LOG(ERROR) << "Unknown argument with -g option: " << args[i];
|
|
return false;
|
|
}
|
|
}
|
|
} else if (args[i] == "-i") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
record_filename_ = args[i];
|
|
|
|
} else if (args[i] == "--kallsyms") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
std::string kallsyms;
|
|
if (!android::base::ReadFileToString(args[i], &kallsyms)) {
|
|
LOG(ERROR) << "Can't read kernel symbols from " << args[i];
|
|
return false;
|
|
}
|
|
Dso::SetKallsyms(kallsyms);
|
|
} else if (args[i] == "--max-stack") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
if (!android::base::ParseUint(args[i].c_str(), &callgraph_max_stack_)) {
|
|
LOG(ERROR) << "invalid arg for --max-stack: " << args[i];
|
|
return false;
|
|
}
|
|
} else if (args[i] == "-n") {
|
|
print_sample_count = true;
|
|
|
|
} else if (args[i] == "--no-demangle") {
|
|
demangle = false;
|
|
} else if (args[i] == "--no-show-ip") {
|
|
show_ip_for_unknown_symbol = false;
|
|
} else if (args[i] == "-o") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
report_filename_ = args[i];
|
|
} else if (args[i] == "--percent-limit") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
if (!android::base::ParseDouble(args[i].c_str(),
|
|
&callgraph_percent_limit_, 0.0)) {
|
|
LOG(ERROR) << "invalid arg for --percent-limit: " << args[i];
|
|
}
|
|
} else if (args[i] == "--pids" || args[i] == "--tids") {
|
|
const std::string& option = args[i];
|
|
std::unordered_set<int>& filter =
|
|
(option == "--pids" ? sample_tree_builder_options_.pid_filter
|
|
: sample_tree_builder_options_.tid_filter);
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
std::vector<std::string> strs = android::base::Split(args[i], ",");
|
|
for (const auto& s : strs) {
|
|
int id;
|
|
if (!android::base::ParseInt(s.c_str(), &id, 0)) {
|
|
LOG(ERROR) << "invalid id in " << option << " option: " << s;
|
|
return false;
|
|
}
|
|
filter.insert(id);
|
|
}
|
|
} else if (args[i] == "--raw-period") {
|
|
raw_period_ = true;
|
|
} else if (args[i] == "--sort") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
sort_keys = android::base::Split(args[i], ",");
|
|
} else if (args[i] == "--symbols") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
std::vector<std::string> strs = android::base::Split(args[i], ";");
|
|
sample_tree_builder_options_.symbol_filter.insert(strs.begin(), strs.end());
|
|
} else if (args[i] == "--symfs") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
symfs_dir = args[i];
|
|
|
|
} else if (args[i] == "--vmlinux") {
|
|
if (!NextArgumentOrError(args, &i)) {
|
|
return false;
|
|
}
|
|
vmlinux = args[i];
|
|
} else {
|
|
ReportUnknownOption(args, i);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
Dso::SetDemangle(demangle);
|
|
if (!Dso::SetSymFsDir(symfs_dir)) {
|
|
return false;
|
|
}
|
|
if (!vmlinux.empty()) {
|
|
Dso::SetVmlinux(vmlinux);
|
|
}
|
|
|
|
if (show_ip_for_unknown_symbol) {
|
|
thread_tree_.ShowIpForUnknownSymbol();
|
|
}
|
|
|
|
SampleDisplayer<SampleEntry, SampleTree> displayer;
|
|
SampleComparator<SampleEntry> comparator;
|
|
|
|
if (accumulate_callchain_) {
|
|
if (raw_period_) {
|
|
displayer.AddDisplayFunction("Children", DisplayAccumulatedPeriod);
|
|
displayer.AddDisplayFunction("Self", DisplaySelfPeriod);
|
|
} else {
|
|
displayer.AddDisplayFunction("Children", DisplayAccumulatedOverhead);
|
|
displayer.AddDisplayFunction("Self", DisplaySelfOverhead);
|
|
}
|
|
} else {
|
|
if (raw_period_) {
|
|
displayer.AddDisplayFunction("Overhead", DisplaySelfPeriod);
|
|
} else {
|
|
displayer.AddDisplayFunction("Overhead", DisplaySelfOverhead);
|
|
}
|
|
}
|
|
if (print_sample_count) {
|
|
displayer.AddDisplayFunction("Sample", DisplaySampleCount);
|
|
}
|
|
|
|
for (auto& key : sort_keys) {
|
|
if (!use_branch_address_ &&
|
|
branch_sort_keys.find(key) != branch_sort_keys.end()) {
|
|
LOG(ERROR) << "sort key '" << key << "' can only be used with -b option.";
|
|
return false;
|
|
}
|
|
if (key == "pid") {
|
|
comparator.AddCompareFunction(ComparePid);
|
|
displayer.AddDisplayFunction("Pid", DisplayPid);
|
|
} else if (key == "tid") {
|
|
comparator.AddCompareFunction(CompareTid);
|
|
displayer.AddDisplayFunction("Tid", DisplayTid);
|
|
} else if (key == "comm") {
|
|
comparator.AddCompareFunction(CompareComm);
|
|
displayer.AddDisplayFunction("Command", DisplayComm);
|
|
} else if (key == "dso") {
|
|
comparator.AddCompareFunction(CompareDso);
|
|
displayer.AddDisplayFunction("Shared Object", DisplayDso);
|
|
} else if (key == "symbol") {
|
|
comparator.AddCompareFunction(CompareSymbol);
|
|
displayer.AddDisplayFunction("Symbol", DisplaySymbol);
|
|
} else if (key == "vaddr_in_file") {
|
|
comparator.AddCompareFunction(CompareVaddrInFile);
|
|
displayer.AddDisplayFunction("VaddrInFile", DisplayVaddrInFile);
|
|
} else if (key == "dso_from") {
|
|
comparator.AddCompareFunction(CompareDsoFrom);
|
|
displayer.AddDisplayFunction("Source Shared Object", DisplayDsoFrom);
|
|
} else if (key == "dso_to") {
|
|
comparator.AddCompareFunction(CompareDso);
|
|
displayer.AddDisplayFunction("Target Shared Object", DisplayDso);
|
|
} else if (key == "symbol_from") {
|
|
comparator.AddCompareFunction(CompareSymbolFrom);
|
|
displayer.AddDisplayFunction("Source Symbol", DisplaySymbolFrom);
|
|
} else if (key == "symbol_to") {
|
|
comparator.AddCompareFunction(CompareSymbol);
|
|
displayer.AddDisplayFunction("Target Symbol", DisplaySymbol);
|
|
} else {
|
|
LOG(ERROR) << "Unknown sort key: " << key;
|
|
return false;
|
|
}
|
|
}
|
|
if (print_callgraph_) {
|
|
bool has_symbol_key = false;
|
|
bool has_vaddr_in_file_key = false;
|
|
for (const auto& key : sort_keys) {
|
|
if (key == "symbol") {
|
|
has_symbol_key = true;
|
|
} else if (key == "vaddr_in_file") {
|
|
has_vaddr_in_file_key = true;
|
|
}
|
|
}
|
|
if (has_symbol_key) {
|
|
if (has_vaddr_in_file_key) {
|
|
displayer.AddExclusiveDisplayFunction(
|
|
ReportCmdCallgraphDisplayerWithVaddrInFile());
|
|
} else {
|
|
displayer.AddExclusiveDisplayFunction(ReportCmdCallgraphDisplayer(
|
|
callgraph_max_stack_, callgraph_percent_limit_, brief_callgraph_));
|
|
}
|
|
}
|
|
}
|
|
|
|
sample_tree_builder_options_.comparator = comparator;
|
|
sample_tree_builder_options_.thread_tree = &thread_tree_;
|
|
|
|
SampleComparator<SampleEntry> sort_comparator;
|
|
sort_comparator.AddCompareFunction(CompareTotalPeriod);
|
|
if (print_callgraph_) {
|
|
sort_comparator.AddCompareFunction(CompareCallGraphDuplicated);
|
|
}
|
|
sort_comparator.AddCompareFunction(ComparePeriod);
|
|
sort_comparator.AddComparator(comparator);
|
|
sample_tree_sorter_.reset(new ReportCmdSampleTreeSorter(sort_comparator));
|
|
sample_tree_displayer_.reset(new ReportCmdSampleTreeDisplayer(displayer));
|
|
return true;
|
|
}
|
|
|
|
bool ReportCommand::ReadEventAttrFromRecordFile() {
|
|
std::vector<EventAttrWithId> attrs = record_file_reader_->AttrSection();
|
|
for (const auto& attr_with_id : attrs) {
|
|
EventAttrWithName attr;
|
|
attr.attr = *attr_with_id.attr;
|
|
attr.name = GetEventNameByAttr(attr.attr);
|
|
event_attrs_.push_back(attr);
|
|
}
|
|
if (use_branch_address_) {
|
|
bool has_branch_stack = true;
|
|
for (const auto& attr : event_attrs_) {
|
|
if ((attr.attr.sample_type & PERF_SAMPLE_BRANCH_STACK) == 0) {
|
|
has_branch_stack = false;
|
|
break;
|
|
}
|
|
}
|
|
if (!has_branch_stack) {
|
|
LOG(ERROR) << record_filename_
|
|
<< " is not recorded with branch stack sampling option.";
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool ReportCommand::ReadFeaturesFromRecordFile() {
|
|
record_file_reader_->LoadBuildIdAndFileFeatures(thread_tree_);
|
|
|
|
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, ' ');
|
|
// TODO: the code to detect system wide collection option is fragile, remove
|
|
// it once we can do cross unwinding.
|
|
for (size_t i = 0; i < cmdline.size(); i++) {
|
|
std::string& s = cmdline[i];
|
|
if (s == "-a") {
|
|
system_wide_collection_ = true;
|
|
break;
|
|
} else if (s == "--call-graph" || s == "--cpu" || s == "-e" ||
|
|
s == "-f" || s == "-F" || s == "-j" || s == "-m" ||
|
|
s == "-o" || s == "-p" || s == "-t") {
|
|
i++;
|
|
} else if (!s.empty() && s[0] != '-') {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (record_file_reader_->HasFeature(PerfFileFormat::FEAT_TRACING_DATA)) {
|
|
std::vector<char> tracing_data;
|
|
if (!record_file_reader_->ReadFeatureSection(
|
|
PerfFileFormat::FEAT_TRACING_DATA, &tracing_data)) {
|
|
return false;
|
|
}
|
|
if (!ProcessTracingData(tracing_data)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool ReportCommand::ReadSampleTreeFromRecordFile() {
|
|
sample_tree_builder_options_.use_branch_address = use_branch_address_;
|
|
// Normally do strict arch check when unwinding stack. But allow unwinding
|
|
// 32-bit processes on 64-bit devices for system wide profiling.
|
|
sample_tree_builder_options_.strict_unwind_arch_check = !system_wide_collection_;
|
|
sample_tree_builder_options_.accumulate_callchain = accumulate_callchain_;
|
|
sample_tree_builder_options_.build_callchain = print_callgraph_;
|
|
sample_tree_builder_options_.use_caller_as_callchain_root = !callgraph_show_callee_;
|
|
|
|
for (size_t i = 0; i < event_attrs_.size(); ++i) {
|
|
sample_tree_builder_.push_back(sample_tree_builder_options_.CreateSampleTreeBuilder());
|
|
}
|
|
|
|
if (!record_file_reader_->ReadDataSection(
|
|
[this](std::unique_ptr<Record> record) {
|
|
return ProcessRecord(std::move(record));
|
|
})) {
|
|
return false;
|
|
}
|
|
for (size_t i = 0; i < sample_tree_builder_.size(); ++i) {
|
|
sample_tree_.push_back(sample_tree_builder_[i]->GetSampleTree());
|
|
sample_tree_sorter_->Sort(sample_tree_.back().samples, print_callgraph_);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool ReportCommand::ProcessRecord(std::unique_ptr<Record> record) {
|
|
thread_tree_.Update(*record);
|
|
if (record->type() == PERF_RECORD_SAMPLE) {
|
|
size_t attr_id = record_file_reader_->GetAttrIndexOfRecord(record.get());
|
|
sample_tree_builder_[attr_id]->ProcessSampleRecord(
|
|
*static_cast<const SampleRecord*>(record.get()));
|
|
} else if (record->type() == PERF_RECORD_TRACING_DATA) {
|
|
const auto& r = *static_cast<TracingDataRecord*>(record.get());
|
|
if (!ProcessTracingData(std::vector<char>(r.data, r.data + r.data_size))) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool ReportCommand::ProcessTracingData(const std::vector<char>& data) {
|
|
Tracing tracing(data);
|
|
for (auto& attr : event_attrs_) {
|
|
if (attr.attr.type == PERF_TYPE_TRACEPOINT) {
|
|
uint64_t trace_event_id = attr.attr.config;
|
|
attr.name = tracing.GetTracingEventNameHavingId(trace_event_id);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool ReportCommand::PrintReport() {
|
|
std::unique_ptr<FILE, decltype(&fclose)> file_handler(nullptr, fclose);
|
|
FILE* report_fp = stdout;
|
|
if (!report_filename_.empty()) {
|
|
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(report_fp);
|
|
for (size_t i = 0; i < event_attrs_.size(); ++i) {
|
|
if (i != 0) {
|
|
fprintf(report_fp, "\n");
|
|
}
|
|
EventAttrWithName& attr = event_attrs_[i];
|
|
SampleTree& sample_tree = sample_tree_[i];
|
|
fprintf(report_fp, "Event: %s (type %u, config %llu)\n", attr.name.c_str(),
|
|
attr.attr.type, attr.attr.config);
|
|
fprintf(report_fp, "Samples: %" PRIu64 "\n", sample_tree.total_samples);
|
|
if (sample_tree.total_error_callchains != 0) {
|
|
fprintf(report_fp, "Error Callchains: %" PRIu64 ", %f%%\n",
|
|
sample_tree.total_error_callchains,
|
|
sample_tree.total_error_callchains * 100.0 / sample_tree.total_samples);
|
|
}
|
|
fprintf(report_fp, "Event count: %" PRIu64 "\n\n", sample_tree.total_period);
|
|
sample_tree_displayer_->DisplaySamples(report_fp, sample_tree.samples, &sample_tree);
|
|
}
|
|
fflush(report_fp);
|
|
if (ferror(report_fp) != 0) {
|
|
PLOG(ERROR) << "print report failed";
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void ReportCommand::PrintReportContext(FILE* report_fp) {
|
|
if (!record_cmdline_.empty()) {
|
|
fprintf(report_fp, "Cmdline: %s\n", record_cmdline_.c_str());
|
|
}
|
|
fprintf(report_fp, "Arch: %s\n", GetArchString(record_file_arch_).c_str());
|
|
}
|
|
|
|
} // namespace
|
|
|
|
void RegisterReportCommand() {
|
|
RegisterCommand("report",
|
|
[] { return std::unique_ptr<Command>(new ReportCommand()); });
|
|
}
|