blob: 0cc87619b00ea96b006c456cbcbd4470211159cc [file] [log] [blame]
// Copyright 2018 The Chromium 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 "services/tracing/perfetto/producer_host.h"
#include <utility>
#include "base/bind.h"
#include "services/tracing/public/cpp/perfetto/shared_memory.h"
#include "third_party/perfetto/include/perfetto/tracing/core/commit_data_request.h"
#include "third_party/perfetto/include/perfetto/tracing/core/data_source_descriptor.h"
#include "third_party/perfetto/include/perfetto/tracing/core/trace_config.h"
namespace tracing {
ProducerHost::ProducerHost() = default;
ProducerHost::~ProducerHost() {
// Manually reset to prevent any callbacks from the ProducerEndpoint
// when we're in a half-destructed state.
producer_endpoint_.reset();
}
void ProducerHost::Initialize(mojom::ProducerClientPtr producer_client,
perfetto::TracingService* service,
const std::string& name) {
DCHECK(service);
DCHECK(!producer_endpoint_);
producer_client_ = std::move(producer_client);
// TODO(oysteine): Figure out an uid once we need it.
// TODO(oysteine): Figure out a good buffer size.
producer_endpoint_ = service->ConnectProducer(
this, 0 /* uid */, name,
4 * 1024 * 1024 /* shared_memory_size_hint_bytes */);
DCHECK(producer_endpoint_);
}
void ProducerHost::OnConnect() {
}
void ProducerHost::OnDisconnect() {
// Deliberately empty, this is invoked by the |service_| business logic after
// we destroy the |producer_endpoint|.
}
void ProducerHost::OnTracingSetup() {
MojoSharedMemory* shared_memory =
static_cast<MojoSharedMemory*>(producer_endpoint_->shared_memory());
DCHECK(shared_memory);
DCHECK(producer_client_);
mojo::ScopedSharedBufferHandle shm = shared_memory->Clone();
DCHECK(shm.is_valid());
producer_client_->OnTracingStart(std::move(shm));
}
void ProducerHost::SetupDataSource(perfetto::DataSourceInstanceID,
const perfetto::DataSourceConfig&) {
// TODO(primiano): plumb call through mojo.
}
void ProducerHost::StartDataSource(perfetto::DataSourceInstanceID id,
const perfetto::DataSourceConfig& config) {
// The type traits will send the base fields in the DataSourceConfig and also
// the ChromeConfig other configs are dropped.
producer_client_->StartDataSource(
id, config,
base::BindOnce(
[](ProducerHost* producer_host, perfetto::DataSourceInstanceID id) {
producer_host->producer_endpoint_->NotifyDataSourceStarted(id);
},
base::Unretained(this), id));
}
void ProducerHost::StopDataSource(perfetto::DataSourceInstanceID id) {
if (producer_client_) {
producer_client_->StopDataSource(
id,
base::BindOnce(
[](ProducerHost* producer_host, perfetto::DataSourceInstanceID id) {
producer_host->producer_endpoint_->NotifyDataSourceStopped(id);
},
base::Unretained(this), id));
}
}
void ProducerHost::Flush(
perfetto::FlushRequestID id,
const perfetto::DataSourceInstanceID* raw_data_source_ids,
size_t num_data_sources) {
DCHECK(producer_client_);
std::vector<uint64_t> data_source_ids(raw_data_source_ids,
raw_data_source_ids + num_data_sources);
DCHECK_EQ(data_source_ids.size(), num_data_sources);
producer_client_->Flush(id, data_source_ids);
}
// This data can come from a malicious child process. We don't do any
// sanitization here because ProducerEndpoint::CommitData() (And any other
// ProducerEndpoint methods) are designed to deal with malformed / malicious
// inputs.
void ProducerHost::CommitData(const perfetto::CommitDataRequest& data_request) {
if (on_commit_callback_for_testing_) {
on_commit_callback_for_testing_.Run(data_request);
}
producer_endpoint_->CommitData(data_request);
}
void ProducerHost::RegisterDataSource(
const perfetto::DataSourceDescriptor& registration_info) {
producer_endpoint_->RegisterDataSource(registration_info);
}
void ProducerHost::RegisterTraceWriter(uint32_t writer_id,
uint32_t target_buffer) {
producer_endpoint_->RegisterTraceWriter(writer_id, target_buffer);
}
void ProducerHost::UnregisterTraceWriter(uint32_t writer_id) {
producer_endpoint_->UnregisterTraceWriter(writer_id);
}
} // namespace tracing