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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/tracing/background_tracing_agent_client_impl.h"
#include <stdint.h>
#include "base/memory/ptr_util.h"
#include "base/strings/strcat.h"
#include "content/browser/child_process_host_impl.h"
#include "content/browser/tracing/background_tracing_manager_impl.h"
#include "mojo/public/cpp/bindings/self_owned_receiver.h"
namespace content {
// static
void BackgroundTracingAgentClientImpl::Create(
int child_process_id,
mojo::Remote<tracing::mojom::BackgroundTracingAgentProvider> provider) {
mojo::PendingRemote<tracing::mojom::BackgroundTracingAgentClient> client;
auto client_receiver = client.InitWithNewPipeAndPassReceiver();
mojo::Remote<tracing::mojom::BackgroundTracingAgent> agent;
provider->Create(ChildProcessHostImpl::ChildProcessUniqueIdToTracingProcessId(
child_process_id),
std::move(client), agent.BindNewPipeAndPassReceiver());
// Lifetime bound to the agent, which means it is bound to the lifetime of
// the child process. Will be cleaned up when the process exits.
mojo::MakeSelfOwnedReceiver(
base::WrapUnique(new BackgroundTracingAgentClientImpl(std::move(agent))),
std::move(client_receiver));
}
BackgroundTracingAgentClientImpl::~BackgroundTracingAgentClientImpl() {
BackgroundTracingManagerImpl::GetInstance().RemoveAgent(agent_.get());
}
void BackgroundTracingAgentClientImpl::OnInitialized() {
BackgroundTracingManagerImpl::GetInstance().AddAgent(agent_.get());
}
void BackgroundTracingAgentClientImpl::OnTriggerBackgroundTrace(
tracing::mojom::BackgroundTracingRulePtr rule,
std::optional<int32_t> histogram_value,
uint64_t flow_id) {
base::trace_event::EmitNamedTrigger(rule->rule_id, histogram_value, flow_id);
}
BackgroundTracingAgentClientImpl::BackgroundTracingAgentClientImpl(
mojo::Remote<tracing::mojom::BackgroundTracingAgent> agent)
: agent_(std::move(agent)) {
DCHECK(agent_);
}
} // namespace content
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