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// Copyright 2017 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_RENDER_PROCESS_HOST_TASK_PROVIDER_H_
#define CHROME_BROWSER_TASK_MANAGER_PROVIDERS_RENDER_PROCESS_HOST_TASK_PROVIDER_H_
#include <map>
#include <memory>
#include "base/memory/weak_ptr.h"
#include "base/scoped_multi_source_observation.h"
#include "chrome/browser/task_manager/providers/task_provider.h"
#include "content/public/browser/child_process_id.h"
#include "content/public/browser/render_process_host_creation_observer.h"
#include "content/public/browser/render_process_host_observer.h"
namespace task_manager {
class ChildProcessTask;
// This provides tasks that represent RenderProcessHost processes. It tracks the
// RPHs through the RenderProcessHostCreationObserver and
// RenderProcessHostObserver observer interfaces.
class RenderProcessHostTaskProvider
: public TaskProvider,
public content::RenderProcessHostCreationObserver,
public content::RenderProcessHostObserver {
public:
RenderProcessHostTaskProvider();
RenderProcessHostTaskProvider(const RenderProcessHostTaskProvider&) = delete;
RenderProcessHostTaskProvider& operator=(
const RenderProcessHostTaskProvider&) = delete;
~RenderProcessHostTaskProvider() override;
// task_manager::TaskProvider:
Task* GetTaskOfUrlRequest(int child_id, int route_id) override;
// content::RenderProcessHostCreationObserver:
void OnRenderProcessHostCreated(content::RenderProcessHost* host) override;
// content::RenderProcessHostObserver:
void RenderProcessExited(
content::RenderProcessHost* host,
const content::ChildProcessTerminationInfo& info) override;
void RenderProcessHostDestroyed(content::RenderProcessHost* host) override;
private:
// task_manager::TaskProvider:
void StartUpdating() override;
void StopUpdating() override;
// Creates a RenderProcessHostTask from the given `host` and notifies the
// observer of its addition.
void CreateTask(content::RenderProcessHost* host);
// Deletes a RenderProcessHostTask whose `render_process_host_id` is provided
// after notifying the observer of its deletion.
void DeleteTask(const content::ChildProcessId render_process_host_id);
// True if the provider is between StartUpdating() and StopUpdating().
bool is_updating_ = false;
std::map<content::ChildProcessId, std::unique_ptr<ChildProcessTask>>
tasks_by_rph_id_;
base::ScopedMultiSourceObservation<content::RenderProcessHost,
content::RenderProcessHostObserver>
host_observation_{this};
// Always keep this the last member of this class to make sure it's the
// first thing to be destructed.
base::WeakPtrFactory<RenderProcessHostTaskProvider> weak_ptr_factory_{this};
};
} // namespace task_manager
#endif // CHROME_BROWSER_TASK_MANAGER_PROVIDERS_RENDER_PROCESS_HOST_TASK_PROVIDER_H_
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