| /* |
| * Copyright (C) 2018 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 "test/fake_producer.h" |
| |
| #include <mutex> |
| |
| #include "perfetto/base/logging.h" |
| #include "perfetto/base/time.h" |
| #include "perfetto/ext/base/utils.h" |
| #include "perfetto/ext/tracing/core/commit_data_request.h" |
| #include "perfetto/ext/tracing/core/shared_memory_arbiter.h" |
| #include "perfetto/ext/tracing/core/trace_packet.h" |
| #include "perfetto/ext/tracing/core/trace_writer.h" |
| #include "perfetto/tracing/core/data_source_config.h" |
| |
| #include "protos/perfetto/config/test_config.gen.h" |
| #include "protos/perfetto/trace/test_event.pbzero.h" |
| #include "protos/perfetto/trace/trace_packet.pbzero.h" |
| |
| namespace perfetto { |
| |
| namespace { |
| const MaybeUnboundBufferID kStartupTargetBufferReservationId = 1; |
| } // namespace |
| |
| FakeProducer::FakeProducer(const std::string& name, |
| base::TaskRunner* task_runner) |
| : name_(name), task_runner_(task_runner) {} |
| FakeProducer::~FakeProducer() = default; |
| |
| void FakeProducer::Connect(const char* socket_name, |
| std::function<void()> on_connect, |
| std::function<void()> on_setup_data_source_instance, |
| std::function<void()> on_create_data_source_instance, |
| std::unique_ptr<SharedMemory> shm, |
| std::unique_ptr<SharedMemoryArbiter> shm_arbiter) { |
| PERFETTO_DCHECK_THREAD(thread_checker_); |
| endpoint_ = ProducerIPCClient::Connect( |
| socket_name, this, "android.perfetto.FakeProducer", task_runner_, |
| TracingService::ProducerSMBScrapingMode::kDefault, |
| /*shared_memory_size_hint_bytes=*/0, |
| /*shared_memory_page_size_hint_bytes=*/4096, std::move(shm), |
| std::move(shm_arbiter)); |
| on_connect_ = std::move(on_connect); |
| on_setup_data_source_instance_ = std::move(on_setup_data_source_instance); |
| on_create_data_source_instance_ = std::move(on_create_data_source_instance); |
| } |
| |
| void FakeProducer::OnConnect() { |
| PERFETTO_DCHECK_THREAD(thread_checker_); |
| DataSourceDescriptor descriptor; |
| descriptor.set_name(name_); |
| endpoint_->RegisterDataSource(descriptor); |
| auto on_connect_callback = std::move(on_connect_); |
| auto task_runner = task_runner_; |
| endpoint_->Sync([task_runner, on_connect_callback] { |
| task_runner->PostTask(on_connect_callback); |
| }); |
| } |
| |
| void FakeProducer::OnDisconnect() { |
| PERFETTO_DCHECK_THREAD(thread_checker_); |
| PERFETTO_FATAL("Producer unexpectedly disconnected from the service"); |
| } |
| |
| void FakeProducer::SetupDataSource(DataSourceInstanceID, |
| const DataSourceConfig&) { |
| task_runner_->PostTask(on_setup_data_source_instance_); |
| } |
| |
| void FakeProducer::StartDataSource(DataSourceInstanceID, |
| const DataSourceConfig& source_config) { |
| PERFETTO_DCHECK_THREAD(thread_checker_); |
| if (trace_writer_) { |
| // Startup tracing was already active, just bind the target buffer. |
| endpoint_->MaybeSharedMemoryArbiter()->BindStartupTargetBuffer( |
| kStartupTargetBufferReservationId, |
| static_cast<BufferID>(source_config.target_buffer())); |
| } else { |
| // Common case: Start tracing now. |
| trace_writer_ = endpoint_->CreateTraceWriter( |
| static_cast<BufferID>(source_config.target_buffer())); |
| SetupFromConfig(source_config.for_testing()); |
| } |
| if (source_config.for_testing().send_batch_on_register()) { |
| ProduceEventBatch(on_create_data_source_instance_); |
| } else { |
| task_runner_->PostTask(on_create_data_source_instance_); |
| } |
| } |
| |
| void FakeProducer::StopDataSource(DataSourceInstanceID) { |
| PERFETTO_DCHECK_THREAD(thread_checker_); |
| trace_writer_.reset(); |
| } |
| |
| // Note: this can be called on a different thread. |
| void FakeProducer::ProduceStartupEventBatch( |
| const protos::gen::TestConfig& config, |
| SharedMemoryArbiter* arbiter, |
| std::function<void()> callback) { |
| task_runner_->PostTask([this, config, arbiter, callback] { |
| SetupFromConfig(config); |
| |
| PERFETTO_CHECK(!trace_writer_); |
| trace_writer_ = |
| arbiter->CreateStartupTraceWriter(kStartupTargetBufferReservationId); |
| |
| EmitEventBatchOnTaskRunner({}); |
| |
| // Issue callback right after writing - cannot wait for flush yet because |
| // we're not connected yet. |
| callback(); |
| }); |
| } |
| |
| // Note: this can be called on a different thread. |
| void FakeProducer::ProduceEventBatch(std::function<void()> callback) { |
| task_runner_->PostTask( |
| [this, callback] { EmitEventBatchOnTaskRunner(callback); }); |
| } |
| |
| void FakeProducer::RegisterDataSource(const DataSourceDescriptor& desc) { |
| task_runner_->PostTask([this, desc] { endpoint_->RegisterDataSource(desc); }); |
| } |
| |
| void FakeProducer::CommitData(const CommitDataRequest& req, |
| std::function<void()> callback) { |
| task_runner_->PostTask( |
| [this, req, callback] { endpoint_->CommitData(req, callback); }); |
| } |
| |
| void FakeProducer::Sync(std::function<void()> callback) { |
| task_runner_->PostTask([this, callback] { endpoint_->Sync(callback); }); |
| } |
| |
| void FakeProducer::OnTracingSetup() {} |
| |
| void FakeProducer::Flush(FlushRequestID flush_request_id, |
| const DataSourceInstanceID*, |
| size_t num_data_sources) { |
| PERFETTO_DCHECK(num_data_sources > 0); |
| if (trace_writer_) |
| trace_writer_->Flush(); |
| endpoint_->NotifyFlushComplete(flush_request_id); |
| } |
| |
| void FakeProducer::SetupFromConfig(const protos::gen::TestConfig& config) { |
| rnd_engine_ = std::minstd_rand0(config.seed()); |
| message_count_ = config.message_count(); |
| message_size_ = config.message_size(); |
| max_messages_per_second_ = config.max_messages_per_second(); |
| } |
| |
| void FakeProducer::EmitEventBatchOnTaskRunner(std::function<void()> callback) { |
| PERFETTO_CHECK(trace_writer_); |
| PERFETTO_CHECK(message_size_ > 1); |
| std::unique_ptr<char, base::FreeDeleter> payload( |
| static_cast<char*>(malloc(message_size_))); |
| memset(payload.get(), '.', message_size_); |
| payload.get()[message_size_ - 1] = 0; |
| |
| base::TimeMillis start = base::GetWallTimeMs(); |
| int64_t iterations = 0; |
| uint32_t messages_to_emit = message_count_; |
| while (messages_to_emit > 0) { |
| uint32_t messages_in_minibatch = |
| max_messages_per_second_ == 0 |
| ? messages_to_emit |
| : std::min(max_messages_per_second_, messages_to_emit); |
| PERFETTO_DCHECK(messages_to_emit >= messages_in_minibatch); |
| |
| for (uint32_t i = 0; i < messages_in_minibatch; i++) { |
| auto handle = trace_writer_->NewTracePacket(); |
| handle->set_for_testing()->set_seq_value( |
| static_cast<uint32_t>(rnd_engine_())); |
| handle->set_for_testing()->set_str(payload.get(), message_size_); |
| } |
| messages_to_emit -= messages_in_minibatch; |
| iterations++; |
| |
| // Pause until the second boundary to make sure that we are adhering to |
| // the speed limitation. |
| if (max_messages_per_second_ > 0) { |
| int64_t expected_time_taken = iterations * 1000; |
| base::TimeMillis time_taken = base::GetWallTimeMs() - start; |
| while (time_taken.count() < expected_time_taken) { |
| usleep(static_cast<useconds_t>( |
| (expected_time_taken - time_taken.count()) * 1000)); |
| time_taken = base::GetWallTimeMs() - start; |
| } |
| } |
| trace_writer_->Flush(messages_to_emit > 0 ? [] {} : callback); |
| } |
| } |
| |
| } // namespace perfetto |