chromium/third_party/blink/renderer/core/workers/threaded_messaging_proxy_base.h

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_THREADED_MESSAGING_PROXY_BASE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_THREADED_MESSAGING_PROXY_BASE_H_

#include <optional>

#include "third_party/blink/public/common/tokens/tokens.h"
#include "third_party/blink/public/mojom/devtools/console_message.mojom-blink-forward.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/frame/web_feature_forward.h"
#include "third_party/blink/renderer/core/inspector/worker_devtools_params.h"
#include "third_party/blink/renderer/core/workers/parent_execution_context_task_runners.h"
#include "third_party/blink/renderer/core/workers/worker_backing_thread_startup_data.h"
#include "third_party/blink/renderer/core/workers/worker_thread.h"
#include "third_party/blink/renderer/platform/heap/self_keep_alive.h"
#include "third_party/blink/renderer/platform/scheduler/public/frame_or_worker_scheduler.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"

namespace base {

class WaitableEvent;

}  // namespace base

namespace blink {

class ExecutionContext;
class SourceLocation;
struct GlobalScopeCreationParams;

// The base proxy class to talk to Worker/WorkletGlobalScope on a worker thread
// from the parent context thread (Note that this is always the main thread for
// now because nested worker is not supported yet). This must be created,
// accessed and destroyed on the parent context thread.
//
// This has a unique lifetime: this is co-owned by the parent object (e.g.,
// DedicatedWorker, AnimationWorklet) and by itself via SelfKeepAlive. The
// parent object releases the reference on its destructor and SelfKeepAlive is
// cleared when the worker thread is terminated.
//
// This co-ownership is necessary because the proxy needs to outlive components
// living on the worker thread (e.g., WorkerGlobalScope) but the parent object
// can be destroyed before the completion of worker thread termination.
class CORE_EXPORT ThreadedMessagingProxyBase
    : public GarbageCollected<ThreadedMessagingProxyBase> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_THREADED_MESSAGING_PROXY_BASE_H_