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// SPDX-License-Identifier: BSD-3-Clause
//go:build openbsd
package cpu
import (
"context"
"fmt"
"runtime"
"unsafe"
"github.com/tklauser/go-sysconf"
"golang.org/x/sys/unix"
"github.com/shirou/gopsutil/v4/internal/common"
)
const (
// sys/sched.h
cpuOnline = 0x0001 // CPUSTATS_ONLINE
// sys/sysctl.h
ctlKern = 1 // "high kernel": proc, limits
ctlHw = 6 // CTL_HW
smt = 24 // HW_SMT
kernCpTime = 40 // KERN_CPTIME
kernCPUStats = 85 // KERN_CPUSTATS
)
var ClocksPerSec = float64(128)
type cpuStats struct {
// cs_time[CPUSTATES]
User uint64
Nice uint64
Sys uint64
Spin uint64
Intr uint64
Idle uint64
// cs_flags
Flags uint64
}
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(_ context.Context, percpu bool) ([]TimesStat, error) {
ret := make([]TimesStat, 0)
if !percpu {
mib := []int32{ctlKern, kernCpTime}
buf, _, err := common.CallSyscall(mib)
if err != nil {
return ret, err
}
times := (*cpuTimes)(unsafe.Pointer(&buf[0]))
ret = append(ret, TimesStat{
CPU: "cpu-total",
User: float64(times.User) / ClocksPerSec,
Nice: float64(times.Nice) / ClocksPerSec,
System: float64(times.Sys) / ClocksPerSec,
Idle: float64(times.Idle) / ClocksPerSec,
Irq: float64(times.Intr) / ClocksPerSec,
})
return ret, nil
}
ncpu, err := unix.SysctlUint32("hw.ncpu")
if err != nil {
return ret, err
}
var i uint32
for i = 0; i < ncpu; i++ {
mib := []int32{ctlKern, kernCPUStats, int32(i)}
buf, _, err := common.CallSyscall(mib)
if err != nil {
return ret, err
}
stats := (*cpuStats)(unsafe.Pointer(&buf[0]))
if (stats.Flags & cpuOnline) == 0 {
continue
}
ret = append(ret, TimesStat{
CPU: fmt.Sprintf("cpu%d", i),
User: float64(stats.User) / ClocksPerSec,
Nice: float64(stats.Nice) / ClocksPerSec,
System: float64(stats.Sys) / ClocksPerSec,
Idle: float64(stats.Idle) / ClocksPerSec,
Irq: float64(stats.Intr) / ClocksPerSec,
})
}
return ret, nil
}
// Returns only one (minimal) CPUInfoStat on OpenBSD
func Info() ([]InfoStat, error) {
return InfoWithContext(context.Background())
}
func InfoWithContext(_ context.Context) ([]InfoStat, error) {
var ret []InfoStat
var err error
c := InfoStat{}
mhz, err := unix.SysctlUint32("hw.cpuspeed")
if err != nil {
return nil, err
}
c.Mhz = float64(mhz)
ncpu, err := unix.SysctlUint32("hw.ncpuonline")
if err != nil {
return nil, err
}
c.Cores = int32(ncpu)
if c.ModelName, err = unix.Sysctl("hw.model"); err != nil {
return nil, err
}
return append(ret, c), nil
}
func CountsWithContext(_ context.Context, _ bool) (int, error) {
return runtime.NumCPU(), nil
}
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