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// 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 "third_party/blink/renderer/core/inspector/devtools_agent.h"
#include <v8-inspector.h>
#include <memory>
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/exported/web_dev_tools_agent_impl.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
#include "third_party/blink/renderer/core/inspector/devtools_session.h"
#include "third_party/blink/renderer/core/inspector/inspected_frames.h"
#include "third_party/blink/renderer/core/inspector/inspector_task_runner.h"
#include "third_party/blink/renderer/core/inspector/worker_devtools_params.h"
#include "third_party/blink/renderer/core/inspector/worker_inspector_controller.h"
#include "third_party/blink/renderer/core/probe/core_probes.h"
#include "third_party/blink/renderer/core/workers/worker_global_scope.h"
#include "third_party/blink/renderer/core/workers/worker_thread.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
namespace {
DevToolsAgent* DevToolsAgentFromContext(ExecutionContext* execution_context) {
if (!execution_context)
return nullptr;
if (auto* scope = DynamicTo<WorkerGlobalScope>(execution_context)) {
return scope->GetThread()
->GetWorkerInspectorController()
->GetDevToolsAgent();
}
if (auto* document = DynamicTo<Document>(execution_context)) {
LocalFrame* frame = document->GetFrame();
if (!frame)
return nullptr;
WebLocalFrameImpl* web_frame =
WebLocalFrameImpl::FromFrame(frame->LocalFrameRoot());
if (!web_frame)
return nullptr;
return web_frame->DevToolsAgentImpl()->GetDevToolsAgent();
}
return nullptr;
}
} // namespace
DevToolsAgent::DevToolsAgent(
Client* client,
InspectedFrames* inspected_frames,
CoreProbeSink* probe_sink,
scoped_refptr<InspectorTaskRunner> inspector_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> io_task_runner)
: client_(client),
inspected_frames_(inspected_frames),
probe_sink_(probe_sink),
inspector_task_runner_(std::move(inspector_task_runner)),
io_task_runner_(std::move(io_task_runner)) {}
DevToolsAgent::~DevToolsAgent() {}
void DevToolsAgent::Trace(blink::Visitor* visitor) {
visitor->Trace(inspected_frames_);
visitor->Trace(probe_sink_);
visitor->Trace(sessions_);
}
void DevToolsAgent::Dispose() {
HeapHashSet<Member<DevToolsSession>> copy(sessions_);
for (auto& session : copy)
session->Detach();
CleanupConnection();
}
void DevToolsAgent::BindReceiver(
mojo::PendingRemote<mojom::blink::DevToolsAgentHost> host_remote,
mojo::PendingReceiver<mojom::blink::DevToolsAgent> receiver,
scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
DCHECK(!receiver_.is_bound());
DCHECK(!associated_receiver_.is_bound());
receiver_.Bind(std::move(receiver), std::move(task_runner));
host_remote_.Bind(std::move(host_remote));
host_remote_.set_disconnect_handler(
WTF::Bind(&DevToolsAgent::CleanupConnection, WrapWeakPersistent(this)));
}
void DevToolsAgent::BindReceiver(
mojo::PendingAssociatedRemote<mojom::blink::DevToolsAgentHost> host_remote,
mojo::PendingAssociatedReceiver<mojom::blink::DevToolsAgent> receiver,
scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
DCHECK(!receiver_.is_bound());
DCHECK(!associated_receiver_.is_bound());
associated_receiver_.Bind(std::move(receiver), std::move(task_runner));
associated_host_remote_.Bind(std::move(host_remote));
associated_host_remote_.set_disconnect_handler(
WTF::Bind(&DevToolsAgent::CleanupConnection, WrapWeakPersistent(this)));
}
void DevToolsAgent::AttachDevToolsSession(
mojo::PendingAssociatedRemote<mojom::blink::DevToolsSessionHost> host,
mojo::PendingAssociatedReceiver<mojom::blink::DevToolsSession>
session_receiver,
mojo::PendingReceiver<mojom::blink::DevToolsSession> io_session_receiver,
mojom::blink::DevToolsSessionStatePtr reattach_session_state,
bool client_expects_binary_responses) {
client_->DebuggerTaskStarted();
DevToolsSession* session = MakeGarbageCollected<DevToolsSession>(
this, std::move(host), std::move(session_receiver),
std::move(io_session_receiver), std::move(reattach_session_state),
client_expects_binary_responses);
sessions_.insert(session);
client_->DebuggerTaskFinished();
}
void DevToolsAgent::InspectElement(const WebPoint& point) {
client_->InspectElement(point);
}
void DevToolsAgent::FlushProtocolNotifications() {
for (auto& session : sessions_)
session->FlushProtocolNotifications();
}
void DevToolsAgent::ReportChildWorkers(bool report,
bool wait_for_debugger,
base::OnceClosure callback) {
report_child_workers_ = report;
pause_child_workers_on_start_ = wait_for_debugger;
if (report_child_workers_) {
auto workers = std::move(unreported_child_worker_threads_);
for (auto& it : workers)
ReportChildWorker(std::move(it.value));
}
std::move(callback).Run();
}
// static
std::unique_ptr<WorkerDevToolsParams> DevToolsAgent::WorkerThreadCreated(
ExecutionContext* parent_context,
WorkerThread* worker_thread,
const KURL& url,
const String& global_scope_name) {
auto result = std::make_unique<WorkerDevToolsParams>();
result->devtools_worker_token = base::UnguessableToken::Create();
DevToolsAgent* agent = DevToolsAgentFromContext(parent_context);
if (!agent)
return result;
auto data = std::make_unique<WorkerData>();
data->url = url;
result->agent_receiver = data->agent_remote.InitWithNewPipeAndPassReceiver();
data->host_receiver =
result->agent_host_remote.InitWithNewPipeAndPassReceiver();
data->devtools_worker_token = result->devtools_worker_token;
data->waiting_for_debugger = agent->pause_child_workers_on_start_;
data->name = global_scope_name;
result->wait_for_debugger = agent->pause_child_workers_on_start_;
if (agent->report_child_workers_) {
agent->ReportChildWorker(std::move(data));
} else {
agent->unreported_child_worker_threads_.insert(worker_thread,
std::move(data));
}
return result;
}
// static
void DevToolsAgent::WorkerThreadTerminated(ExecutionContext* parent_context,
WorkerThread* worker_thread) {
if (DevToolsAgent* agent = DevToolsAgentFromContext(parent_context))
agent->unreported_child_worker_threads_.erase(worker_thread);
}
void DevToolsAgent::ReportChildWorker(std::unique_ptr<WorkerData> data) {
if (host_remote_.is_bound()) {
host_remote_->ChildWorkerCreated(
std::move(data->agent_remote), std::move(data->host_receiver),
std::move(data->url), std::move(data->name),
data->devtools_worker_token, data->waiting_for_debugger);
} else if (associated_host_remote_.is_bound()) {
associated_host_remote_->ChildWorkerCreated(
std::move(data->agent_remote), std::move(data->host_receiver),
std::move(data->url), std::move(data->name),
data->devtools_worker_token, data->waiting_for_debugger);
}
}
void DevToolsAgent::CleanupConnection() {
receiver_.reset();
associated_receiver_.reset();
host_remote_.reset();
associated_host_remote_.reset();
report_child_workers_ = false;
pause_child_workers_on_start_ = false;
}
} // namespace blink
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