| /* |
| * SPDX-FileCopyrightText: Copyright 2022 Arm Limited and/or its affiliates <open-source-office@arm.com> |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #include "Profiler.hpp" |
| #include "log_macros.h" |
| |
| #include <cstring> |
| |
| namespace arm { |
| namespace app { |
| Profiler::Profiler() |
| : Profiler("Unknown") |
| {} |
| |
| Profiler::Profiler(const char* name) |
| : m_name(name) |
| {} |
| |
| bool Profiler::StartProfiling(const char* name) |
| { |
| if (name) { |
| this->SetName(name); |
| } |
| |
| if (!this->m_started) { |
| hal_pmu_reset(); |
| this->m_tstampSt.initialised = false; |
| hal_pmu_get_counters(&this->m_tstampSt); |
| if (this->m_tstampSt.initialised) { |
| if (this->m_profStats.count(this->m_name) == 0) { |
| this->m_profStats.insert( |
| std::pair<std::string, std::vector<Statistics>>( |
| this->m_name, std::vector<Statistics>(this->m_tstampSt.num_counters)) |
| ); |
| } |
| this->m_started = true; |
| return true; |
| } |
| } |
| printf_err("Failed to start profiler %s\n", this->m_name.c_str()); |
| return false; |
| } |
| |
| bool Profiler::StopProfiling() |
| { |
| if (this->m_started) { |
| this->m_tstampEnd.initialised = false; |
| hal_pmu_get_counters(&this->m_tstampEnd); |
| this->m_started = false; |
| if (this->m_tstampEnd.initialised) { |
| this->UpdateRunningStats( |
| this->m_tstampSt, |
| this->m_tstampEnd, |
| this->m_name); |
| return true; |
| } |
| } |
| printf_err("Failed to stop profiler %s\n", this->m_name.c_str()); |
| return false; |
| } |
| |
| bool Profiler::StopProfilingAndReset() |
| { |
| if (this->StopProfiling()) { |
| this->Reset(); |
| return true; |
| } |
| printf_err("Failed to stop profiler %s\n", this->m_name.c_str()); |
| return false; |
| } |
| |
| void Profiler::Reset() |
| { |
| this->m_started = false; |
| this->m_profStats.clear(); |
| memset(&this->m_tstampSt, 0, sizeof(this->m_tstampSt)); |
| memset(&this->m_tstampEnd, 0, sizeof(this->m_tstampEnd)); |
| } |
| |
| void calcProfilingStat(uint64_t currentValue, |
| Statistics& data) |
| { |
| data.total += currentValue; |
| data.min = std::min(data.min, currentValue); |
| data.max = std::max(data.max, currentValue); |
| data.avrg = (static_cast<double>(data.total) / data.samplesNum); |
| } |
| |
| void Profiler::GetAllResultsAndReset(std::vector<ProfileResult>& results) |
| { |
| for (const auto& item: this->m_profStats) { |
| auto name = item.first; |
| std::vector<Statistics> series = item.second; |
| ProfileResult result{}; |
| result.name = item.first; |
| |
| for (Statistics& stat : series) { |
| result.samplesNum = stat.samplesNum; |
| result.data.emplace_back(stat); |
| } |
| |
| results.emplace_back(result); |
| } |
| |
| this->Reset(); |
| } |
| |
| void printStatisticsHeader(uint32_t samplesNum) { |
| info("Number of samples: %" PRIu32 "\n", samplesNum); |
| info("%s\n", "Total / Avg./ Min / Max"); |
| } |
| |
| void Profiler::PrintProfilingResult(bool printFullStat) { |
| std::vector<ProfileResult> results{}; |
| GetAllResultsAndReset(results); |
| for(ProfileResult& result: results) { |
| if (!result.data.empty()) { |
| info("Profile for %s:\n", result.name.c_str()); |
| if (printFullStat) { |
| printStatisticsHeader(result.samplesNum); |
| } |
| } |
| |
| for (Statistics &stat: result.data) { |
| if (printFullStat) { |
| info("%s %s: %" PRIu64 "/ %.0f / %" PRIu64 " / %" PRIu64 " \n", |
| stat.name.c_str(), stat.unit.c_str(), |
| stat.total, stat.avrg, stat.min, stat.max); |
| } else { |
| info("%s: %.0f %s\n", stat.name.c_str(), stat.avrg, stat.unit.c_str()); |
| } |
| } |
| } |
| } |
| |
| void Profiler::SetName(const char* str) |
| { |
| this->m_name = std::string(str); |
| } |
| |
| void Profiler::UpdateRunningStats(pmu_counters start, pmu_counters end, |
| const std::string& name) |
| { |
| struct ProfilingUnit unit = { |
| .counters = end |
| }; |
| |
| if (end.num_counters != start.num_counters || |
| !end.initialised || !start.initialised) { |
| printf_err("Invalid start or end counters\n"); |
| return; |
| } |
| |
| for (size_t i = 0; i < unit.counters.num_counters; ++i) { |
| if (unit.counters.counters[i].value < start.counters[i].value) { |
| warn("Overflow detected for %s\n", unit.counters.counters[i].name); |
| unit.counters.counters[i].value = 0; |
| } else { |
| unit.counters.counters[i].value -= start.counters[i].value; |
| } |
| } |
| |
| for (size_t i = 0; i < this->m_profStats[name].size(); ++i) { |
| this->m_profStats[name][i].name = unit.counters.counters[i].name; |
| this->m_profStats[name][i].unit = unit.counters.counters[i].unit; |
| ++this->m_profStats[name][i].samplesNum; |
| calcProfilingStat( |
| unit.counters.counters[i].value, |
| this->m_profStats[name][i]); |
| } |
| |
| ProfileResult result{}; |
| result.name = this->m_name; |
| result.samplesNum = this->m_profStats[name][0].samplesNum; |
| |
| for (Statistics& stat : this->m_profStats[name]) { |
| result.data.emplace_back(stat); |
| } |
| } |
| |
| } /* namespace app */ |
| } /* namespace arm */ |