chromium/components/system_cpu/core_times.h

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#ifndef COMPONENTS_SYSTEM_CPU_CORE_TIMES_H_
#define COMPONENTS_SYSTEM_CPU_CORE_TIMES_H_

#include <stdint.h>

#include <initializer_list>

#include "base/gtest_prod_util.h"

namespace system_cpu {

// CPU core utilization statistics.
//
// Linux:
// Quantities are expressed in "user hertz", which is a Linux kernel
// configuration knob (USER_HZ). Typical values range between 1/100 seconds
// and 1/1000 seconds. The denominator can be obtained from
// sysconf(_SC_CLK_TCK).
//
// Mac:
// Quantities are expressed in "CPU Ticks", which is an arbitrary unit of time
// recording how many intervals of time elapsed, typically 1/100 of a second.
class CoreTimes { … };

}  // namespace system_cpu

#endif  // COMPONENTS_SYSTEM_CPU_CORE_TIMES_H_