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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 CHROME_BROWSER_TASK_MANAGER_PROVIDERS_SPARE_RENDER_PROCESS_HOST_TASK_PROVIDER_H_
#define CHROME_BROWSER_TASK_MANAGER_PROVIDERS_SPARE_RENDER_PROCESS_HOST_TASK_PROVIDER_H_
#include <memory>
#include "base/containers/flat_map.h"
#include "base/scoped_observation.h"
#include "chrome/browser/task_manager/providers/task_provider.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/spare_render_process_host_manager.h"
namespace task_manager {
class ChildProcessTask;
// This provides tasks that represent spare RenderProcessHost processes.
class SpareRenderProcessHostTaskProvider
: public TaskProvider,
public content::SpareRenderProcessHostManager::Observer {
public:
SpareRenderProcessHostTaskProvider();
~SpareRenderProcessHostTaskProvider() override;
SpareRenderProcessHostTaskProvider(
const SpareRenderProcessHostTaskProvider&) = delete;
SpareRenderProcessHostTaskProvider& operator=(
const SpareRenderProcessHostTaskProvider&) = delete;
// task_manager::TaskProvider:
Task* GetTaskOfUrlRequest(int child_id, int route_id) override;
private:
friend class SpareRenderProcessHostTaskTest;
// task_manager::TaskProvider:
void StartUpdating() override;
void StopUpdating() override;
// content::SpareRenderProcessHostManager::Observer:
void OnSpareRenderProcessHostReady(content::RenderProcessHost* host) override;
void OnSpareRenderProcessHostRemoved(
content::RenderProcessHost* host) override;
base::flat_map<int, std::unique_ptr<ChildProcessTask>> tasks_by_rph_id_;
// The subscription for the notifications of the spare host changing.
base::ScopedObservation<content::SpareRenderProcessHostManager,
content::SpareRenderProcessHostManager::Observer>
scoped_observation_{this};
};
} // namespace task_manager
#endif // CHROME_BROWSER_TASK_MANAGER_PROVIDERS_SPARE_RENDER_PROCESS_HOST_TASK_PROVIDER_H_
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