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// Copyright 2020 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_PLATFORM_SCHEDULER_PUBLIC_AGENT_GROUP_SCHEDULER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_PUBLIC_AGENT_GROUP_SCHEDULER_H_
#include "base/task/single_thread_task_runner.h"
#include "ipc/urgent_message_observer.h"
#include "third_party/blink/public/platform/scheduler/web_agent_group_scheduler.h"
#include "third_party/blink/public/platform/web_common.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/scheduler/public/page_scheduler.h"
namespace blink {
namespace scheduler {
class WebThreadScheduler;
} // namespace scheduler
// AgentGroupScheduler schedules per-AgentSchedulingGroup tasks.
// AgentSchedulingGroup is Blink's unit of scheduling and performance isolation.
class BLINK_PLATFORM_EXPORT AgentGroupScheduler
: public GarbageCollected<AgentGroupScheduler>,
public IPC::UrgentMessageObserver {
public:
class Agent : public GarbageCollectedMixin {
public:
virtual void PerformMicrotaskCheckpoint() = 0;
};
~AgentGroupScheduler() override = default;
// Creates a new PageScheduler for a given Page. Must be called from the
// associated WebThread.
virtual std::unique_ptr<PageScheduler> CreatePageScheduler(
PageScheduler::Delegate*) = 0;
virtual void AddAgent(Agent* agent) = 0;
virtual void Trace(Visitor*) const {}
virtual scoped_refptr<base::SingleThreadTaskRunner> DefaultTaskRunner() = 0;
virtual scoped_refptr<base::SingleThreadTaskRunner>
CompositorTaskRunner() = 0;
virtual scheduler::WebThreadScheduler& GetMainThreadScheduler() = 0;
virtual v8::Isolate* Isolate() = 0;
// IPC::Channel::UrgentMessageDelegate implementation:
void OnUrgentMessageReceived() override = 0;
void OnUrgentMessageProcessed() override = 0;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_PUBLIC_AGENT_GROUP_SCHEDULER_H_
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