Update module github.com/shirou/gopsutil to v4

Signed-off-by: Mikel Olasagasti Uranga <mikel@olasagasti.info>

vendor/github.com/shirou/gopsutil/v4/cpu/cpu_openbsd.go

@@ -0,0 +1,137 @@
+// SPDX-License-Identifier: BSD-3-Clause
+//go:build openbsd
+
+package cpu
+
+import (
+	"context"
+	"fmt"
+	"runtime"
+	"unsafe"
+
+	"github.com/shirou/gopsutil/v4/internal/common"
+	"github.com/tklauser/go-sysconf"
+	"golang.org/x/sys/unix"
+)
+
+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(ctx context.Context, percpu bool) (ret []TimesStat, err error) {
+	if !percpu {
+		mib := []int32{ctlKern, kernCpTime}
+		buf, _, err := common.CallSyscall(mib)
+		if err != nil {
+			return ret, err
+		}
+		times := (*cpuTimes)(unsafe.Pointer(&buf[0]))
+		stat := 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 []TimesStat{stat}, nil
+	}
+
+	ncpu, err := unix.SysctlUint32("hw.ncpu")
+	if err != nil {
+		return
+	}
+
+	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(ctx 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(ctx context.Context, logical bool) (int, error) {
+	return runtime.NumCPU(), nil
+}