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// SPDX-License-Identifier: BSD-3-Clause
//go:build darwin
package cpu
import (
"context"
"fmt"
"strconv"
"strings"
"unsafe"
"github.com/tklauser/go-sysconf"
"golang.org/x/sys/unix"
"github.com/shirou/gopsutil/v4/internal/common"
)
// sys/resource.h
const (
CPUser = 0
cpNice = 1
cpSys = 2
cpIntr = 3
cpIdle = 4
cpUStates = 5
)
// mach/machine.h
const (
cpuStateUser = 0
cpuStateSystem = 1
cpuStateIdle = 2
cpuStateNice = 3
cpuStateMax = 4
)
// mach/processor_info.h
const (
processorCpuLoadInfo = 2
)
type hostCpuLoadInfoData struct {
cpuTicks [cpuStateMax]uint32
}
// default value. from time.h
var ClocksPerSec = float64(128)
func init() {
clkTck, err := sysconf.Sysconf(sysconf.SC_CLK_TCK)
// ignore errors
if err == nil {
ClocksPerSec = float64(clkTck)
}
}
func Times(percpu bool) ([]TimesStat, error) {
return TimesWithContext(context.Background(), percpu)
}
func TimesWithContext(ctx context.Context, percpu bool) ([]TimesStat, error) {
lib, err := common.NewLibrary(common.System)
if err != nil {
return nil, err
}
defer lib.Close()
if percpu {
return perCPUTimes(lib)
}
return allCPUTimes(lib)
}
// Returns only one CPUInfoStat on FreeBSD
func Info() ([]InfoStat, error) {
return InfoWithContext(context.Background())
}
func InfoWithContext(ctx context.Context) ([]InfoStat, error) {
var ret []InfoStat
c := InfoStat{}
c.ModelName, _ = unix.Sysctl("machdep.cpu.brand_string")
family, _ := unix.SysctlUint32("machdep.cpu.family")
c.Family = strconv.FormatUint(uint64(family), 10)
model, _ := unix.SysctlUint32("machdep.cpu.model")
c.Model = strconv.FormatUint(uint64(model), 10)
stepping, _ := unix.SysctlUint32("machdep.cpu.stepping")
c.Stepping = int32(stepping)
features, err := unix.Sysctl("machdep.cpu.features")
if err == nil {
for _, v := range strings.Fields(features) {
c.Flags = append(c.Flags, strings.ToLower(v))
}
}
leaf7Features, err := unix.Sysctl("machdep.cpu.leaf7_features")
if err == nil {
for _, v := range strings.Fields(leaf7Features) {
c.Flags = append(c.Flags, strings.ToLower(v))
}
}
extfeatures, err := unix.Sysctl("machdep.cpu.extfeatures")
if err == nil {
for _, v := range strings.Fields(extfeatures) {
c.Flags = append(c.Flags, strings.ToLower(v))
}
}
cores, _ := unix.SysctlUint32("machdep.cpu.core_count")
c.Cores = int32(cores)
cacheSize, _ := unix.SysctlUint32("machdep.cpu.cache.size")
c.CacheSize = int32(cacheSize)
c.VendorID, _ = unix.Sysctl("machdep.cpu.vendor")
v, err := getFrequency()
if err == nil {
c.Mhz = v
}
return append(ret, c), nil
}
func CountsWithContext(ctx context.Context, logical bool) (int, error) {
var cpuArgument string
if logical {
cpuArgument = "hw.logicalcpu"
} else {
cpuArgument = "hw.physicalcpu"
}
count, err := unix.SysctlUint32(cpuArgument)
if err != nil {
return 0, err
}
return int(count), nil
}
func perCPUTimes(machLib *common.Library) ([]TimesStat, error) {
machHostSelf := common.GetFunc[common.MachHostSelfFunc](machLib, common.MachHostSelfSym)
machTaskSelf := common.GetFunc[common.MachTaskSelfFunc](machLib, common.MachTaskSelfSym)
hostProcessorInfo := common.GetFunc[common.HostProcessorInfoFunc](machLib, common.HostProcessorInfoSym)
vmDeallocate := common.GetFunc[common.VMDeallocateFunc](machLib, common.VMDeallocateSym)
var count, ncpu uint32
var cpuload *hostCpuLoadInfoData
status := hostProcessorInfo(machHostSelf(), processorCpuLoadInfo, &ncpu, uintptr(unsafe.Pointer(&cpuload)), &count)
if status != common.KERN_SUCCESS {
return nil, fmt.Errorf("host_processor_info error=%d", status)
}
defer vmDeallocate(machTaskSelf(), uintptr(unsafe.Pointer(cpuload)), uintptr(ncpu))
ret := []TimesStat{}
loads := unsafe.Slice(cpuload, ncpu)
for i := 0; i < int(ncpu); i++ {
c := TimesStat{
CPU: fmt.Sprintf("cpu%d", i),
User: float64(loads[i].cpuTicks[cpuStateUser]) / ClocksPerSec,
System: float64(loads[i].cpuTicks[cpuStateSystem]) / ClocksPerSec,
Nice: float64(loads[i].cpuTicks[cpuStateNice]) / ClocksPerSec,
Idle: float64(loads[i].cpuTicks[cpuStateIdle]) / ClocksPerSec,
}
ret = append(ret, c)
}
return ret, nil
}
func allCPUTimes(machLib *common.Library) ([]TimesStat, error) {
machHostSelf := common.GetFunc[common.MachHostSelfFunc](machLib, common.MachHostSelfSym)
hostStatistics := common.GetFunc[common.HostStatisticsFunc](machLib, common.HostStatisticsSym)
var cpuload hostCpuLoadInfoData
count := uint32(cpuStateMax)
status := hostStatistics(machHostSelf(), common.HOST_CPU_LOAD_INFO,
uintptr(unsafe.Pointer(&cpuload)), &count)
if status != common.KERN_SUCCESS {
return nil, fmt.Errorf("host_statistics error=%d", status)
}
c := TimesStat{
CPU: "cpu-total",
User: float64(cpuload.cpuTicks[cpuStateUser]) / ClocksPerSec,
System: float64(cpuload.cpuTicks[cpuStateSystem]) / ClocksPerSec,
Nice: float64(cpuload.cpuTicks[cpuStateNice]) / ClocksPerSec,
Idle: float64(cpuload.cpuTicks[cpuStateIdle]) / ClocksPerSec,
}
return []TimesStat{c}, nil
}
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