| // Copyright (C) 2021 The Android Open Source Project |
| // |
| // 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 <ditto/instruction.h> |
| |
| #include <ditto/shared_variables.h> |
| #include <ditto/logger.h> |
| #include <ditto/tracer.h> |
| |
| namespace dittosuite { |
| |
| |
| Instruction::Instruction(const std::string& name, const Params& params) |
| : name_(name), |
| syscall_(params.syscall_), |
| repeat_(params.repeat_), |
| period_us_(params.period_us_) {} |
| |
| void Instruction::SetUp() {} |
| |
| void Instruction::Run() { |
| if (period_us_) { |
| if (clock_gettime(CLOCK_MONOTONIC, &next_awake_time_)) { |
| PLOGF("Unable to get current time"); |
| } |
| } |
| for (int i = 0; i < repeat_; i++) { |
| SetUpSingle(); |
| RunSingle(); |
| TearDownSingle(i == repeat_ - 1); |
| } |
| } |
| |
| void Instruction::RunSynchronized(pthread_barrier_t* barrier, const MultithreadingParams& params) { |
| int ret = pthread_setname_np(pthread_self(), params.name_.c_str()); |
| if (ret) { |
| if (ret == ERANGE) { |
| LOGF("Name too long for thread, max 15 chars allowed: " + params.name_); |
| } else { |
| LOGF("Error setting thread name: " + std::to_string(ret)); |
| } |
| } |
| |
| if (params.sched_attr_.IsSet()) { |
| params.sched_attr_.Set(); |
| } |
| if (params.sched_affinity_.IsSet()) { |
| params.sched_affinity_.Set(); |
| } |
| |
| pthread_barrier_wait(barrier); |
| Instruction::Run(); |
| } |
| |
| std::thread Instruction::SpawnThread(pthread_barrier_t* barrier, |
| const MultithreadingParams& params) { |
| return std::thread([=, this] { RunSynchronized(barrier, params); }); |
| } |
| |
| void Instruction::TearDown() {} |
| |
| void Instruction::SetUpSingle() { |
| tracer_.Start(name_); |
| time_sampler_.MeasureStart(); |
| } |
| |
| void Instruction::TearDownSingle(bool /*is_last*/) { |
| time_sampler_.MeasureEnd(); |
| tracer_.End(name_); |
| |
| if (!period_us_) { |
| return; |
| } |
| |
| next_awake_time_ = next_awake_time_ + MicrosToTimespec(period_us_); |
| if (clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &next_awake_time_, nullptr)) { |
| PLOGF("Period clock interrupted"); |
| } |
| } |
| |
| std::unique_ptr<Result> Instruction::CollectResults(const std::string& prefix) { |
| auto result = std::make_unique<Result>(prefix + name_, repeat_); |
| result->AddMeasurement("duration", TimespecToDoubleNanos(time_sampler_.GetSamples())); |
| return result; |
| } |
| |
| void Instruction::SetAbsolutePathKey(int absolute_path_key) { |
| absolute_path_key_ = absolute_path_key; |
| } |
| |
| void Instruction::SetArgv(char** argv) { |
| argv_ = argv; |
| } |
| |
| void Instruction::SetArgc(int argc) { |
| argc_ = argc; |
| } |
| |
| std::string Instruction::GetAbsolutePath() { |
| return std::get<std::string>(SharedVariables::Get(absolute_path_key_)); |
| } |
| |
| int Instruction::absolute_path_key_; |
| char** Instruction::argv_; |
| int Instruction::argc_; |
| |
| } // namespace dittosuite |