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// Copyright 2016 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.
#ifndef AnimationWorkletThread_h
#define AnimationWorkletThread_h
#include <memory>
#include "core/workers/WorkerThread.h"
#include "modules/ModulesExport.h"
namespace blink {
class ThreadableLoadingContext;
class WorkerReportingProxy;
// Represents the shared backing thread that is used by all animation worklets
// and participates in the Blink garbage collection process.
class MODULES_EXPORT AnimationWorkletThread final : public WorkerThread {
static std::unique_ptr<AnimationWorkletThread> Create(
~AnimationWorkletThread() override;
WorkerBackingThread& GetWorkerBackingThread() override;
// The backing thread is cleared by ClearSharedBackingThread().
void ClearWorkerBackingThread() override {}
// This may block the main thread.
static void CollectAllGarbage();
static void EnsureSharedBackingThread();
static void ClearSharedBackingThread();
static void CreateSharedBackingThreadForTest();
// This only can be called after EnsureSharedBackingThread() is performed.
// Currently AnimationWorkletThread owns only one thread and it is shared
// by all the customers.
static WebThread* GetSharedBackingThread();
AnimationWorkletThread(ThreadableLoadingContext*, WorkerReportingProxy&);
WorkerOrWorkletGlobalScope* CreateWorkerGlobalScope(
std::unique_ptr<GlobalScopeCreationParams>) final;
bool IsOwningBackingThread() const override { return false; }
WebThreadType GetThreadType() const override {
return WebThreadType::kAnimationWorkletThread;
} // namespace blink
#endif // AnimationWorkletThread_h