chromium/chrome/browser/task_manager/sampling/task_group_sampler.cc

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/task_manager/sampling/task_group_sampler.h"

#include <limits>
#include <utility>

#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/process/process_metrics.h"
#include "base/task/sequenced_task_runner.h"
#include "base/types/expected.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "chrome/browser/task_manager/task_manager_observer.h"
#include "content/public/browser/browser_child_process_host.h"
#include "content/public/browser/browser_thread.h"

#if BUILDFLAG(IS_WIN)
#include <windows.h>

#include <psapi.h>
#endif

namespace task_manager {

namespace {

std::unique_ptr<base::ProcessMetrics> CreateProcessMetrics(
    base::ProcessHandle handle) { … }

}  // namespace

TaskGroupSampler::TaskGroupSampler(
    base::Process process,
    const scoped_refptr<base::SequencedTaskRunner>& blocking_pool_runner,
    const OnCpuRefreshCallback& on_cpu_refresh,
    const OnSwappedMemRefreshCallback& on_swapped_mem_refresh,
    const OnIdleWakeupsCallback& on_idle_wakeups,
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_MAC)
    const OnOpenFdCountCallback& on_open_fd_count,
#endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_MAC)
    const OnProcessPriorityCallback& on_process_priority)
    : … { … }

void TaskGroupSampler::Refresh(int64_t refresh_flags) { … }

TaskGroupSampler::~TaskGroupSampler() { … }

double TaskGroupSampler::RefreshCpuUsage() { … }

int64_t TaskGroupSampler::RefreshSwappedMem() { … }

int TaskGroupSampler::RefreshIdleWakeupsPerSecond() { … }

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_MAC)
int TaskGroupSampler::RefreshOpenFdCount() { … }
#endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_MAC)

base::Process::Priority TaskGroupSampler::RefreshProcessPriority() { … }

}  // namespace task_manager