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#include "perf_data_converter.h"
#include <algorithm>
#include <limits>
#include <map>
#include <memory>
#include <set>
#include <unordered_map>
#include <android-base/logging.h>
#include <android-base/macros.h>
#include <android-base/strings.h>
#include <perf_data_utils.h>
#include <perf_parser.h>
#include <perf_protobuf_io.h>
#include "perfprofd_record.pb.h"
#include "perf_data.pb.h"
#include "map_utils.h"
#include "quipper_helper.h"
#include "symbolizer.h"
using std::map;
namespace android {
namespace perfprofd {
namespace {
void AddSymbolInfo(PerfprofdRecord* record,
::quipper::PerfParser& perf_parser,
::perfprofd::Symbolizer* symbolizer,
bool symbolize_everything) {
std::unordered_set<std::string> filenames_w_build_id;
if (!symbolize_everything) {
for (auto& perf_build_id : record->build_ids()) {
filenames_w_build_id.insert(perf_build_id.filename());
}
}
std::unordered_set<std::string> files_wo_build_id;
{
quipper::MmapEventIterator it(*record);
for (; it != it.end(); ++it) {
const ::quipper::PerfDataProto_MMapEvent* mmap_event = &it->mmap_event();
if (!mmap_event->has_filename() || !mmap_event->has_start() || !mmap_event->has_len()) {
// Don't care.
continue;
}
if (filenames_w_build_id.count(mmap_event->filename()) == 0) {
files_wo_build_id.insert(mmap_event->filename());
}
}
}
if (files_wo_build_id.empty()) {
return;
}
struct Dso {
uint64_t min_vaddr;
RangeMap<std::string, uint64_t> symbols;
explicit Dso(uint64_t min_vaddr_in) : min_vaddr(min_vaddr_in) {
}
};
std::unordered_map<std::string, Dso> files;
auto it = record->events().begin();
auto end = record->events().end();
auto parsed_it = perf_parser.parsed_events().begin();
auto parsed_end = perf_parser.parsed_events().end();
for (; it != end; ++it, ++parsed_it) {
CHECK(parsed_it != parsed_end);
if (!it->has_sample_event()) {
continue;
}
const ::quipper::PerfDataProto_SampleEvent& sample_event = it->sample_event();
if (android::base::kEnableDChecks) {
// Check that the parsed_event and sample_event are consistent.
CHECK_EQ(parsed_it->callchain.size(), sample_event.callchain_size());
}
auto check_address = [&](const std::string& dso_name, uint64_t offset) {
if (files_wo_build_id.count(dso_name) == 0) {
return;
}
// OK, that's a hit in the mmap segment (w/o build id).
Dso* dso_data;
{
auto dso_it = files.find(dso_name);
constexpr uint64_t kNoMinAddr = std::numeric_limits<uint64_t>::max();
if (dso_it == files.end()) {
uint64_t min_vaddr;
bool has_min_vaddr = symbolizer->GetMinExecutableVAddr(dso_name, &min_vaddr);
if (!has_min_vaddr) {
min_vaddr = kNoMinAddr;
}
auto it = files.emplace(dso_name, Dso(min_vaddr));
dso_data = &it.first->second;
} else {
dso_data = &dso_it->second;
}
if (dso_data->min_vaddr == kNoMinAddr) {
return;
}
}
// TODO: Is min_vaddr necessary here?
const uint64_t file_addr = offset;
std::string symbol = symbolizer->Decode(dso_name, file_addr);
if (symbol.empty()) {
return;
}
dso_data->symbols.Insert(symbol, file_addr);
};
if (sample_event.has_ip() && parsed_it->dso_and_offset.dso_info_ != nullptr) {
check_address(parsed_it->dso_and_offset.dso_info_->name, parsed_it->dso_and_offset.offset_);
}
if (sample_event.callchain_size() > 0) {
for (auto& callchain_data: parsed_it->callchain) {
if (callchain_data.dso_info_ == nullptr) {
continue;
}
check_address(callchain_data.dso_info_->name, callchain_data.offset_);
}
}
}
if (!files.empty()) {
// We have extra symbol info, create proto messages now.
size_t symbol_info_index = 0;
for (auto& file_data : files) {
const std::string& filename = file_data.first;
const Dso& dso = file_data.second;
if (dso.symbols.empty()) {
continue;
}
auto* symbol_info = record->AddExtension(::quipper::symbol_info);
symbol_info->set_filename(filename);
symbol_info->set_filename_md5_prefix(::quipper::Md5Prefix(filename));
symbol_info->set_min_vaddr(dso.min_vaddr);
for (auto& aggr_sym : dso.symbols) {
auto* symbol = symbol_info->add_symbols();
symbol->set_addr(*aggr_sym.second.offsets.begin());
symbol->set_size(*aggr_sym.second.offsets.rbegin() - *aggr_sym.second.offsets.begin() + 1);
symbol->set_name(aggr_sym.second.symbol);
symbol->set_name_md5_prefix(::quipper::Md5Prefix(aggr_sym.second.symbol));
}
++symbol_info_index;
}
}
}
} // namespace
PerfprofdRecord*
RawPerfDataToAndroidPerfProfile(const string &perf_file,
::perfprofd::Symbolizer* symbolizer,
bool symbolize_everything) {
std::unique_ptr<PerfprofdRecord> ret(new PerfprofdRecord());
ret->SetExtension(::quipper::id, 0); // TODO.
::quipper::PerfParserOptions options = {};
options.do_remap = true;
options.discard_unused_events = true;
options.read_missing_buildids = true;
::quipper::PerfReader reader;
if (!reader.ReadFile(perf_file)) return nullptr;
::quipper::PerfParser parser(&reader, options);
if (!parser.ParseRawEvents()) return nullptr;
if (!reader.Serialize(ret.get())) return nullptr;
// Append parser stats to protobuf.
::quipper::PerfSerializer::SerializeParserStats(parser.stats(), ret.get());
// TODO: Symbolization.
if (symbolizer != nullptr) {
AddSymbolInfo(ret.get(), parser, symbolizer, symbolize_everything);
}
return ret.release();
}
} // namespace perfprofd
} // namespace android
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