chromium/base/process/process_metrics.cc

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/process/process_metrics.h"

#include <utility>

#include "base/check.h"
#include "base/notimplemented.h"
#include "base/numerics/safe_conversions.h"
#include "base/values.h"
#include "build/build_config.h"

namespace base {

namespace {

#if BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
    BUILDFLAG(IS_AIX)
int CalculateEventsPerSecond(uint64_t event_count,
                             uint64_t* last_event_count,
                             base::TimeTicks* last_calculated) { … }
#endif

}  // namespace

SystemMemoryInfoKB::SystemMemoryInfoKB() = default;

SystemMemoryInfoKB::SystemMemoryInfoKB(const SystemMemoryInfoKB&) = default;

SystemMemoryInfoKB& SystemMemoryInfoKB::operator=(const SystemMemoryInfoKB&) =
    default;

SystemMetrics::SystemMetrics() { … }

SystemMetrics SystemMetrics::Sample() { … }

Value::Dict SystemMetrics::ToDict() const { … }

ProcessMetrics::~ProcessMetrics() = default;

std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateCurrentProcessMetrics() { … }

#if !BUILDFLAG(IS_FREEBSD) || !BUILDFLAG(IS_POSIX)
double ProcessMetrics::GetPlatformIndependentCPUUsage(
    TimeDelta cumulative_cpu) { … }

base::expected<double, ProcessCPUUsageError>
ProcessMetrics::GetPlatformIndependentCPUUsage() { … }
#endif

#if BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
    BUILDFLAG(IS_AIX)
int ProcessMetrics::CalculateIdleWakeupsPerSecond(
    uint64_t absolute_idle_wakeups) { … }
#else
int ProcessMetrics::GetIdleWakeupsPerSecond() {
  NOTIMPLEMENTED();  // http://crbug.com/120488
  return 0;
}
#endif  // BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
        // || BUILDFLAG(IS_AIX)

#if BUILDFLAG(IS_APPLE)
int ProcessMetrics::CalculatePackageIdleWakeupsPerSecond(
    uint64_t absolute_package_idle_wakeups) {
  return CalculateEventsPerSecond(absolute_package_idle_wakeups,
                                  &last_absolute_package_idle_wakeups_,
                                  &last_package_idle_wakeups_time_);
}

#endif  // BUILDFLAG(IS_APPLE)

}  // namespace base