agent_scheduling_group_host.h | Explore in Territory

// 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 CONTENT_BROWSER_RENDERER_HOST_AGENT_SCHEDULING_GROUP_HOST_H_
#define CONTENT_BROWSER_RENDERER_HOST_AGENT_SCHEDULING_GROUP_HOST_H_

#include <stdint.h>

#include "base/containers/id_map.h"
#include "base/memory/raw_ref.h"
#include "base/memory/safe_ref.h"
#include "base/state_transitions.h"
#include "base/supports_user_data.h"
#include "content/common/agent_scheduling_group.mojom.h"
#include "content/common/associated_interfaces.mojom.h"
#include "content/common/buildflags.h"
#include "content/common/content_export.h"
#include "content/common/renderer.mojom-forward.h"
#include "content/public/browser/render_process_host_observer.h"
#include "content/public/common/content_features.h"
#include "ipc/ipc_listener.h"
#include "mojo/public/cpp/bindings/associated_receiver.h"
#include "mojo/public/cpp/bindings/associated_receiver_set.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "third_party/blink/public/common/tokens/tokens.h"
#include "third_party/blink/public/mojom/frame/frame_replication_state.mojom-forward.h"
#include "third_party/blink/public/mojom/shared_storage/shared_storage_worklet_service.mojom-forward.h"
#include "third_party/blink/public/mojom/worker/worklet_global_scope_creation_params.mojom-forward.h"

namespace IPC {
class ChannelProxy;
class Message;
}  // namespace IPC

namespace content {

class AgentSchedulingGroupHostFactory;
class BrowserMessageFilter;
class RenderProcessHost;
class SiteInstanceGroup;

// Browser-side host of an AgentSchedulingGroup, used for
// AgentSchedulingGroup-bound messaging. AgentSchedulingGroup is Blink's unit of
// scheduling and performance isolation, which is the only way to obtain
// ordering guarantees between different Mojo (associated) interfaces and legacy
// IPC messages.
//
// AgentSchedulingGroups can be assigned at various granularities, as coarse as
// process-wide or as specific as SiteInstanceGroup. There cannot be more than
// one AgentSchedulingGroup per SiteInstanceGroup without breaking IPC ordering
// for RenderWidgetHost. (SiteInstanceGroups themselves can be tuned to contain
// one or more SiteInstances, depending on platform and policy.)
//
// An AgentSchedulingGroupHost is stored as (and owned by) UserData on the
// RenderProcessHost.
class CONTENT_EXPORT AgentSchedulingGroupHost
    : public base::SupportsUserData,
      public RenderProcessHostObserver,
      public IPC::Listener,
      public mojom::AgentSchedulingGroupHost { … };

std::ostream& operator<<(std::ostream& os,
                         AgentSchedulingGroupHost::LifecycleState state);

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_AGENT_SCHEDULING_GROUP_HOST_H_
chromium/content/browser/renderer_host/agent_scheduling_group_host.h
