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// Copyright 2013 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 CHROME_BROWSER_TASK_MANAGER_CHILD_PROCESS_RESOURCE_PROVIDER_H_
#define CHROME_BROWSER_TASK_MANAGER_CHILD_PROCESS_RESOURCE_PROVIDER_H_
#include <map>
#include <vector>
#include "base/basictypes.h"
#include "chrome/browser/task_manager/resource_provider.h"
#include "content/public/browser/browser_child_process_observer.h"
#include "content/public/browser/notification_registrar.h"
class TaskManager;
namespace content {
struct ChildProcessData;
}
namespace task_manager {
class ChildProcessResource;
class ChildProcessResourceProvider
: public ResourceProvider,
public content::BrowserChildProcessObserver {
public:
explicit ChildProcessResourceProvider(TaskManager* task_manager);
virtual Resource* GetResource(int origin_pid,
int render_process_host_id,
int routing_id) OVERRIDE;
virtual void StartUpdating() OVERRIDE;
virtual void StopUpdating() OVERRIDE;
// content::BrowserChildProcessObserver methods:
virtual void BrowserChildProcessHostConnected(
const content::ChildProcessData& data) OVERRIDE;
virtual void BrowserChildProcessHostDisconnected(
const content::ChildProcessData& data) OVERRIDE;
private:
virtual ~ChildProcessResourceProvider();
// Retrieves information about the running ChildProcessHosts (performed in the
// IO thread).
virtual void RetrieveChildProcessData();
// Notifies the UI thread that the ChildProcessHosts information have been
// retrieved.
virtual void ChildProcessDataRetreived(
const std::vector<content::ChildProcessData>& child_processes);
void AddToTaskManager(const content::ChildProcessData& child_process_data);
TaskManager* task_manager_;
// Whether we are currently reporting to the task manager. Used to ignore
// notifications sent after StopUpdating().
bool updating_;
// Maps the actual resources (the ChildProcessData) to the Task Manager
// resources.
typedef std::map<base::ProcessHandle, ChildProcessResource*>
ChildProcessMap;
ChildProcessMap resources_;
// Maps the pids to the resources (used for quick access to the resource on
// byte read notifications).
typedef std::map<int, ChildProcessResource*> PidResourceMap;
PidResourceMap pid_to_resources_;
// A scoped container for notification registries.
content::NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(ChildProcessResourceProvider);
};
} // namespace task_manager
#endif // CHROME_BROWSER_TASK_MANAGER_CHILD_PROCESS_RESOURCE_PROVIDER_H_
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