shared_sampler.h | Explore in Territory

// Copyright 2016 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_SAMPLING_SHARED_SAMPLER_H_
#define CHROME_BROWSER_TASK_MANAGER_SAMPLING_SHARED_SAMPLER_H_

#include <map>
#include <memory>
#include <optional>
#include <utility>
#include <vector>

#include "base/files/file_path.h"
#include "base/functional/callback.h"
#include "base/memory/ref_counted.h"
#include "base/process/process_handle.h"
#include "base/sequence_checker.h"
#include "base/task/sequenced_task_runner.h"
#include "base/time/time.h"
#include "build/build_config.h"

namespace task_manager {

struct ProcessDataSnapshot;

// Defines sampler that will calculate resources for all processes all at once,
// on the worker thread. Created by TaskManagerImpl on the UI thread, but used
// mainly on a blocking pool thread.
//
// This exists because on Windows it is much faster to collect a group of
// process metrics for all processes all at once using NtQuerySystemInformation
// than to query the same data for for each process individually and because
// some types like Idle Wakeups can only be collected this way.
class SharedSampler : public base::RefCountedThreadSafe<SharedSampler> { … };

}  // namespace task_manager

#endif  // CHROME_BROWSER_TASK_MANAGER_SAMPLING_SHARED_SAMPLER_H_
chromium/chrome/browser/task_manager/sampling/shared_sampler.h
