| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/performance/lib/perfmon/controller_impl.h" |
| |
| #include <fidl/fuchsia.perfmon.cpu/cpp/fidl.h> |
| #include <lib/syslog/cpp/macros.h> |
| |
| #include "src/performance/lib/perfmon/config_impl.h" |
| #include "src/performance/lib/perfmon/device_reader.h" |
| |
| namespace perfmon::internal { |
| |
| ControllerImpl::ControllerImpl(fidl::SyncClient<fuchsia_perfmon_cpu::Controller> controller_ptr, |
| uint32_t num_traces, uint32_t buffer_size_in_pages, |
| const Config& config) |
| : controller_ptr_(std::move(controller_ptr)), |
| num_traces_(num_traces), |
| buffer_size_in_pages_(buffer_size_in_pages), |
| config_(config), |
| weak_ptr_factory_(this) {} |
| |
| ControllerImpl::~ControllerImpl() { Reset(); } |
| |
| bool ControllerImpl::Start() { |
| if (started_) { |
| FX_LOGS(ERROR) << "already started"; |
| return false; |
| } |
| |
| if (!Stage()) { |
| return false; |
| } |
| |
| if (auto result = controller_ptr_->Start(); result.is_error()) { |
| FX_LOGS(ERROR) << "Starting trace failed: status=" << result.error_value(); |
| return false; |
| } |
| |
| started_ = true; |
| return true; |
| } |
| |
| void ControllerImpl::Stop() { |
| if (auto result = controller_ptr_->Stop(); result.is_error()) { |
| FX_LOGS(ERROR) << "Stopping trace failed: status=" << result.error_value(); |
| } else { |
| started_ = false; |
| } |
| } |
| |
| bool ControllerImpl::Stage() { |
| FX_DCHECK(!started_); |
| |
| fuchsia_perfmon_cpu::Config fidl_config; |
| internal::PerfmonToFidlConfig(config_, &fidl_config); |
| |
| if (auto result = controller_ptr_->StageConfig(fidl_config); result.is_error()) { |
| FX_LOGS(ERROR) << "Staging config failed: status=" << result.error_value(); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void ControllerImpl::Terminate() { |
| if (auto status = controller_ptr_->Terminate(); status.is_error()) { |
| FX_LOGS(ERROR) << "Terminating trace failed: status=" << status.error_value(); |
| } else { |
| started_ = false; |
| } |
| } |
| |
| void ControllerImpl::Reset() { |
| Stop(); |
| Terminate(); |
| } |
| |
| bool ControllerImpl::GetBufferHandle(const std::string& name, uint32_t trace_num, |
| zx::vmo* out_vmo) { |
| auto out_vmo_res = controller_ptr_->GetBufferHandle(trace_num); |
| if (out_vmo_res.is_error()) { |
| FX_LOGS(ERROR) << "Getting buffer handle failed: status=" << out_vmo_res.error_value(); |
| return false; |
| } |
| if (!out_vmo_res->vmo().is_valid()) { |
| FX_LOGS(ERROR) << "Getting buffer handle failed: no handle returned"; |
| return false; |
| } |
| out_vmo->reset(out_vmo_res->vmo().release()); |
| return true; |
| } |
| |
| std::unique_ptr<Reader> ControllerImpl::GetReader() { |
| std::unique_ptr<Reader> reader; |
| if (DeviceReader::Create(weak_ptr_factory_.GetWeakPtr(), buffer_size_in_pages_, &reader)) { |
| return reader; |
| } |
| return nullptr; |
| } |
| |
| } // namespace perfmon::internal |