gofumpt

_tools/v3migration/v3migration.go

@@ -103,5 +103,4 @@ func main() {
 			issueRemoveUnusedValue()
 		}
 	}
-
 }

cpu/cpu.go

@@ -51,8 +51,10 @@ type lastPercent struct {
 	lastPerCPUTimes []TimesStat
 }
 
-var lastCPUPercent lastPercent
-var invoke common.Invoker = common.Invoke{}
+var (
+	lastCPUPercent lastPercent
+	invoke         common.Invoker = common.Invoke{}
+)
 
 func init() {
 	lastCPUPercent.Lock()

cpu/cpu_aix.go

@@ -1,3 +1,4 @@
+//go:build aix
 // +build aix
 
 package cpu

cpu/cpu_darwin.go

@@ -1,3 +1,4 @@
+//go:build darwin
 // +build darwin
 
 package cpu

cpu/cpu_darwin_cgo.go

@@ -1,5 +1,5 @@
-// +build darwin
-// +build cgo
+//go:build darwin && cgo
+// +build darwin,cgo
 
 package cpu
 
@@ -108,5 +108,4 @@ func allCPUTimes() ([]TimesStat, error) {
 	}
 
 	return []TimesStat{c}, nil
-
 }

cpu/cpu_darwin_nocgo.go

@@ -1,5 +1,5 @@
-// +build darwin
-// +build !cgo
+//go:build darwin && !cgo
+// +build darwin,!cgo
 
 package cpu
 

cpu/cpu_dragonfly.go

@@ -15,14 +15,16 @@ import (
 	"golang.org/x/sys/unix"
 )
 
-var ClocksPerSec = float64(128)
-var cpuMatch = regexp.MustCompile(`^CPU:`)
-var originMatch = regexp.MustCompile(`Origin\s*=\s*"(.+)"\s+Id\s*=\s*(.+)\s+Stepping\s*=\s*(.+)`)
-var featuresMatch = regexp.MustCompile(`Features=.+<(.+)>`)
-var featuresMatch2 = regexp.MustCompile(`Features2=[a-f\dx]+<(.+)>`)
-var cpuEnd = regexp.MustCompile(`^Trying to mount root`)
-var cpuTimesSize int
-var emptyTimes cpuTimes
+var (
+	ClocksPerSec   = float64(128)
+	cpuMatch       = regexp.MustCompile(`^CPU:`)
+	originMatch    = regexp.MustCompile(`Origin\s*=\s*"(.+)"\s+Id\s*=\s*(.+)\s+Stepping\s*=\s*(.+)`)
+	featuresMatch  = regexp.MustCompile(`Features=.+<(.+)>`)
+	featuresMatch2 = regexp.MustCompile(`Features2=[a-f\dx]+<(.+)>`)
+	cpuEnd         = regexp.MustCompile(`^Trying to mount root`)
+	cpuTimesSize   int
+	emptyTimes     cpuTimes
+)
 
 func init() {
 	clkTck, err := sysconf.Sysconf(sysconf.SC_CLK_TCK)

cpu/cpu_fallback.go

@@ -1,3 +1,4 @@
+//go:build !darwin && !linux && !freebsd && !openbsd && !solaris && !windows && !dragonfly && !plan9 && !aix
 // +build !darwin,!linux,!freebsd,!openbsd,!solaris,!windows,!dragonfly,!plan9,!aix
 
 package cpu

cpu/cpu_freebsd.go

@@ -15,15 +15,17 @@ import (
 	"golang.org/x/sys/unix"
 )
 
-var ClocksPerSec = float64(128)
-var cpuMatch = regexp.MustCompile(`^CPU:`)
-var originMatch = regexp.MustCompile(`Origin\s*=\s*"(.+)"\s+Id\s*=\s*(.+)\s+Family\s*=\s*(.+)\s+Model\s*=\s*(.+)\s+Stepping\s*=\s*(.+)`)
-var featuresMatch = regexp.MustCompile(`Features=.+<(.+)>`)
-var featuresMatch2 = regexp.MustCompile(`Features2=[a-f\dx]+<(.+)>`)
-var cpuEnd = regexp.MustCompile(`^Trying to mount root`)
-var cpuCores = regexp.MustCompile(`FreeBSD/SMP: (\d*) package\(s\) x (\d*) core\(s\)`)
-var cpuTimesSize int
-var emptyTimes cpuTimes
+var (
+	ClocksPerSec   = float64(128)
+	cpuMatch       = regexp.MustCompile(`^CPU:`)
+	originMatch    = regexp.MustCompile(`Origin\s*=\s*"(.+)"\s+Id\s*=\s*(.+)\s+Family\s*=\s*(.+)\s+Model\s*=\s*(.+)\s+Stepping\s*=\s*(.+)`)
+	featuresMatch  = regexp.MustCompile(`Features=.+<(.+)>`)
+	featuresMatch2 = regexp.MustCompile(`Features2=[a-f\dx]+<(.+)>`)
+	cpuEnd         = regexp.MustCompile(`^Trying to mount root`)
+	cpuCores       = regexp.MustCompile(`FreeBSD/SMP: (\d*) package\(s\) x (\d*) core\(s\)`)
+	cpuTimesSize   int
+	emptyTimes     cpuTimes
+)
 
 func init() {
 	clkTck, err := sysconf.Sysconf(sysconf.SC_CLK_TCK)

cpu/cpu_freebsd_test.go

@@ -13,7 +13,7 @@ func TestParseDmesgBoot(t *testing.T) {
 		t.SkipNow()
 	}
 
-	var cpuTests = []struct {
+	cpuTests := []struct {
 		file   string
 		cpuNum int
 		cores  int32

cpu/cpu_linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package cpu
@@ -30,7 +31,7 @@ func Times(percpu bool) ([]TimesStat, error) {
 
 func TimesWithContext(ctx context.Context, percpu bool) ([]TimesStat, error) {
 	filename := common.HostProc("stat")
-	var lines = []string{}
+	lines := []string{}
 	if percpu {
 		statlines, err := common.ReadLines(filename)
 		if err != nil || len(statlines) < 2 {
@@ -338,7 +339,7 @@ func CountsWithContext(ctx context.Context, logical bool) (int, error) {
 	}
 	// physical cores
 	// https://github.com/giampaolo/psutil/blob/8415355c8badc9c94418b19bdf26e622f06f0cce/psutil/_pslinux.py#L615-L628
-	var threadSiblingsLists = make(map[string]bool)
+	threadSiblingsLists := make(map[string]bool)
 	// These 2 files are the same but */core_cpus_list is newer while */thread_siblings_list is deprecated and may disappear in the future.
 	// https://www.kernel.org/doc/Documentation/admin-guide/cputopology.rst
 	// https://github.com/giampaolo/psutil/pull/1727#issuecomment-707624964

cpu/cpu_openbsd.go

@@ -1,3 +1,4 @@
+//go:build openbsd
 // +build openbsd
 
 package cpu
@@ -108,7 +109,7 @@ func TimesWithContext(ctx context.Context, percpu bool) ([]TimesStat, error) {
 			j *= 2
 		}
 
-		var cpuTimes = make([]int32, cpUStates)
+		cpuTimes := make([]int32, cpUStates)
 		var mib []int32
 		if percpu {
 			mib = []int32{ctlKern, kernCptime2, int32(j)}

cpu/cpu_plan9.go

@@ -1,3 +1,4 @@
+//go:build plan9
 // +build plan9
 
 package cpu

cpu/cpu_plan9_test.go

@@ -1,3 +1,4 @@
+//go:build plan9
 // +build plan9
 
 package cpu

cpu/cpu_solaris.go

@@ -24,7 +24,7 @@ func init() {
 	}
 }
 
-//sum all values in a float64 map with float64 keys
+// sum all values in a float64 map with float64 keys
 func msum(x map[float64]float64) float64 {
 	total := 0.0
 	for _, y := range x {
@@ -47,7 +47,7 @@ func TimesWithContext(ctx context.Context, percpu bool) ([]TimesStat, error) {
 	user := make(map[float64]float64)
 	kern := make(map[float64]float64)
 	iowt := make(map[float64]float64)
-	//swap := make(map[float64]float64)
+	// swap := make(map[float64]float64)
 	kstatSysOut, err := invoke.CommandWithContext(ctx, kstatSys, "-p", "cpu_stat:*:*:/^idle$|^user$|^kernel$|^iowait$|^swap$/")
 	if err != nil {
 		return nil, fmt.Errorf("cannot execute kstat: %s", err)

cpu/cpu_solaris_test.go

@@ -15,28 +15,36 @@ func TestParseISAInfo(t *testing.T) {
 	}{
 		{
 			"1cpu_1core_isainfo.txt",
-			[]string{"rdseed", "adx", "avx2", "fma", "bmi2", "bmi1", "rdrand", "f16c", "vmx",
+			[]string{
+				"rdseed", "adx", "avx2", "fma", "bmi2", "bmi1", "rdrand", "f16c", "vmx",
 				"avx", "xsave", "pclmulqdq", "aes", "movbe", "sse4.2", "sse4.1", "ssse3", "popcnt",
 				"tscp", "cx16", "sse3", "sse2", "sse", "fxsr", "mmx", "cmov", "amd_sysc", "cx8",
-				"tsc", "fpu"},
+				"tsc", "fpu",
+			},
 		},
 		{
 			"2cpu_1core_isainfo.txt",
-			[]string{"rdseed", "adx", "avx2", "fma", "bmi2", "bmi1", "rdrand", "f16c", "vmx",
+			[]string{
+				"rdseed", "adx", "avx2", "fma", "bmi2", "bmi1", "rdrand", "f16c", "vmx",
 				"avx", "xsave", "pclmulqdq", "aes", "movbe", "sse4.2", "sse4.1", "ssse3", "popcnt",
 				"tscp", "cx16", "sse3", "sse2", "sse", "fxsr", "mmx", "cmov", "amd_sysc", "cx8",
-				"tsc", "fpu"},
+				"tsc", "fpu",
+			},
 		},
 		{
 			"2cpu_8core_isainfo.txt",
-			[]string{"vmx", "avx", "xsave", "pclmulqdq", "aes", "sse4.2", "sse4.1", "ssse3", "popcnt",
+			[]string{
+				"vmx", "avx", "xsave", "pclmulqdq", "aes", "sse4.2", "sse4.1", "ssse3", "popcnt",
 				"tscp", "cx16", "sse3", "sse2", "sse", "fxsr", "mmx", "cmov", "amd_sysc", "cx8",
-				"tsc", "fpu"},
+				"tsc", "fpu",
+			},
 		},
 		{
 			"2cpu_12core_isainfo.txt",
-			[]string{"amd_svm", "amd_lzcnt", "popcnt", "amd_sse4a", "tscp", "ahf", "cx16", "sse3", "sse2",
-				"sse", "fxsr", "amd_3dnowx", "amd_3dnow", "amd_mmx", "mmx", "cmov", "amd_sysc", "cx8", "tsc", "fpu"},
+			[]string{
+				"amd_svm", "amd_lzcnt", "popcnt", "amd_sse4a", "tscp", "ahf", "cx16", "sse3", "sse2",
+				"sse", "fxsr", "amd_3dnowx", "amd_3dnow", "amd_mmx", "mmx", "cmov", "amd_sysc", "cx8", "tsc", "fpu",
+			},
 		},
 	}
 

cpu/cpu_test.go

@@ -74,7 +74,6 @@ func TestCpu_times(t *testing.T) {
 	if cpuTotal[0].Idle != 0 {
 		assert.InEpsilon(t, cpuTotal[0].Idle, perCPUIdleTimeSum, margin)
 	}
-
 }
 
 func TestCpu_counts(t *testing.T) {
@@ -162,7 +161,6 @@ func testCPUPercent(t *testing.T, percpu bool) {
 }
 
 func testCPUPercentLastUsed(t *testing.T, percpu bool) {
-
 	numcpu := runtime.NumCPU()
 	testCount := 10
 
@@ -194,7 +192,6 @@ func testCPUPercentLastUsed(t *testing.T, percpu bool) {
 			}
 		}
 	}
-
 }
 
 func TestCPUPercent(t *testing.T) {

cpu/cpu_windows.go

@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package cpu

disk/disk_aix.go

@@ -1,3 +1,4 @@
+//go:build aix
 // +build aix
 
 package disk
@@ -13,10 +14,12 @@ import (
 var FSType map[int]string
 
 func init() {
-	FSType = map[int]string{0: "jfs2", 1: "namefs", 2: "nfs", 3: "jfs", 5: "cdrom", 6: "proc",
+	FSType = map[int]string{
+		0: "jfs2", 1: "namefs", 2: "nfs", 3: "jfs", 5: "cdrom", 6: "proc",
 		16: "special-fs", 17: "cache-fs", 18: "nfs3", 19: "automount-fs", 20: "pool-fs", 32: "vxfs",
 		33: "veritas-fs", 34: "udfs", 35: "nfs4", 36: "nfs4-pseudo", 37: "smbfs", 38: "mcr-pseudofs",
-		39: "ahafs", 40: "sterm-nfs", 41: "asmfs"}
+		39: "ahafs", 40: "sterm-nfs", 41: "asmfs",
+	}
 }
 
 func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, error) {

disk/disk_darwin.go

@@ -1,3 +1,4 @@
+//go:build darwin
 // +build darwin
 
 package disk

disk/disk_darwin_cgo.go

@@ -1,5 +1,5 @@
-// +build darwin
-// +build cgo
+//go:build darwin && cgo
+// +build darwin,cgo
 
 package disk
 

disk/disk_darwin_nocgo.go

@@ -1,5 +1,5 @@
-// +build darwin
-// +build !cgo
+//go:build darwin && !cgo
+// +build darwin,!cgo
 
 package disk
 

disk/disk_fallback.go

@@ -1,3 +1,4 @@
+//go:build !darwin && !linux && !freebsd && !openbsd && !windows && !solaris && !aix
 // +build !darwin,!linux,!freebsd,!openbsd,!windows,!solaris,!aix
 
 package disk

disk/disk_freebsd.go

@@ -1,3 +1,4 @@
+//go:build freebsd
 // +build freebsd
 
 package disk

disk/disk_freebsd_386.go

@@ -52,6 +52,7 @@ type devstat struct {
 	Id            *byte
 	Sequence1     uint32
 }
+
 type bintime struct {
 	Sec  int32
 	Frac uint64

disk/disk_freebsd_amd64.go

@@ -55,6 +55,7 @@ type devstat struct {
 	Sequence1     uint32
 	Pad_cgo_2     [4]byte
 }
+
 type bintime struct {
 	Sec  int64
 	Frac uint64

disk/disk_freebsd_arm.go

@@ -52,6 +52,7 @@ type devstat struct {
 	Id            *byte
 	Sequence1     uint32
 }
+
 type bintime struct {
 	Sec  int32
 	Frac uint64

disk/disk_freebsd_arm64.go

@@ -1,5 +1,6 @@
-// +build freebsd
-// +build arm64
+//go:build freebsd && arm64
+// +build freebsd,arm64
+
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs disk/types_freebsd.go
 

disk/disk_linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package disk
@@ -21,6 +22,7 @@ import (
 const (
 	sectorSize = 512
 )
+
 const (
 	// man statfs
 	ADFS_SUPER_MAGIC      = 0xadf5

disk/disk_openbsd.go

@@ -1,3 +1,4 @@
+//go:build openbsd
 // +build openbsd
 
 package disk

disk/disk_openbsd_386.go

@@ -1,5 +1,6 @@
-// +build openbsd
-// +build 386
+//go:build openbsd && 386
+// +build openbsd,386
+
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs disk/types_openbsd.go
 

disk/disk_openbsd_arm64.go

@@ -1,5 +1,6 @@
-// +build openbsd
-// +build arm64
+//go:build openbsd && arm64
+// +build openbsd,arm64
+
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs disk/types_openbsd.go
 

disk/disk_solaris.go

@@ -1,3 +1,4 @@
+//go:build solaris
 // +build solaris
 
 package disk
@@ -23,10 +24,9 @@ const (
 	_MNTTAB = "/etc/mnttab"
 )
 
-var (
-	// A blacklist of read-only virtual filesystems.  Writable filesystems are of
-	// operational concern and must not be included in this list.
-	fsTypeBlacklist = map[string]struct{}{
+// A blacklist of read-only virtual filesystems.  Writable filesystems are of
+// operational concern and must not be included in this list.
+var fsTypeBlacklist = map[string]struct{}{
 	"ctfs":   {},
 	"dev":    {},
 	"fd":     {},
@@ -35,8 +35,7 @@ var (
 	"mntfs":  {},
 	"objfs":  {},
 	"proc":   {},
-	}
-)
+}
 
 func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, error) {
 	ret := make([]PartitionStat, 0, _DEFAULT_NUM_MOUNTS)
@@ -113,6 +112,7 @@ func UsageWithContext(ctx context.Context, path string) (*UsageStat, error) {
 
 	return usageStat, nil
 }
+
 func SerialNumberWithContext(ctx context.Context, name string) (string, error) {
 	return "", common.ErrNotImplementedError
 }

disk/disk_unix.go

@@ -1,3 +1,4 @@
+//go:build freebsd || linux || darwin
 // +build freebsd linux darwin
 
 package disk

disk/disk_windows.go

@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package disk
@@ -106,7 +107,7 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 					uintptr(len(lpFileSystemNameBuffer)))
 				if driveret == 0 {
 					if typeret == 5 || typeret == 2 {
-						continue //device is not ready will happen if there is no disk in the drive
+						continue // device is not ready will happen if there is no disk in the drive
 					}
 					return ret, err
 				}

disk/types_freebsd.go

@@ -1,4 +1,6 @@
+//go:build ignore
 // +build ignore
+
 // Hand writing: _Ctype_struct___0
 
 /*
@@ -58,5 +60,7 @@ type (
 	_C_long_double C.longlong
 )
 
-type devstat C.struct_devstat
-type bintime C.struct_bintime
+type (
+	devstat C.struct_devstat
+	bintime C.struct_bintime
+)

disk/types_openbsd.go

@@ -1,4 +1,6 @@
+//go:build ignore
 // +build ignore
+
 // Hand writing: _Ctype_struct___0
 
 /*
@@ -25,8 +27,12 @@ const (
 	sizeOfDiskstats = C.sizeof_struct_diskstats
 )
 
-type Diskstats C.struct_diskstats
-type Timeval C.struct_timeval
+type (
+	Diskstats C.struct_diskstats
+	Timeval   C.struct_timeval
+)
 
-type Diskstat C.struct_diskstat
-type bintime C.struct_bintime
+type (
+	Diskstat C.struct_diskstat
+	bintime  C.struct_bintime
+)

docker/docker.go

@@ -8,8 +8,10 @@ import (
 	"github.com/shirou/gopsutil/v3/internal/common"
 )
 
-var ErrDockerNotAvailable = errors.New("docker not available")
-var ErrCgroupNotAvailable = errors.New("cgroup not available")
+var (
+	ErrDockerNotAvailable = errors.New("docker not available")
+	ErrCgroupNotAvailable = errors.New("cgroup not available")
+)
 
 var invoke common.Invoker = common.Invoke{}
 

docker/docker_linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package docker

docker/docker_linux_test.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package docker

docker/docker_notlinux.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package docker

host/host_bsd.go

@@ -1,3 +1,4 @@
+//go:build darwin || freebsd || openbsd
 // +build darwin freebsd openbsd
 
 package host

host/host_darwin.go

@@ -1,3 +1,4 @@
+//go:build darwin
 // +build darwin
 
 package host
@@ -94,7 +95,6 @@ func UsersWithContext(ctx context.Context) ([]UserStat, error) {
 	}
 
 	return ret, nil
-
 }
 
 func PlatformInformationWithContext(ctx context.Context) (string, string, string, error) {

host/host_darwin_386.go

@@ -14,6 +14,7 @@ type Utmpx struct {
 	Host      [256]int8
 	Pad       [16]uint32
 }
+
 type Timeval struct {
 	Sec int32
 }

host/host_darwin_amd64.go

@@ -14,6 +14,7 @@ type Utmpx struct {
 	Host      [256]int8
 	Pad       [16]uint32
 }
+
 type Timeval struct {
 	Sec int32
 }

host/host_darwin_arm64.go

@@ -1,5 +1,6 @@
-// +build darwin
-// +build arm64
+//go:build darwin && arm64
+// +build darwin,arm64
+
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs host/types_darwin.go
 

host/host_darwin_cgo.go

@@ -1,5 +1,5 @@
-// +build darwin
-// +build cgo
+//go:build darwin && cgo
+// +build darwin,cgo
 
 package host
 

host/host_darwin_nocgo.go

@@ -1,5 +1,5 @@
-// +build darwin
-// +build !cgo
+//go:build darwin && !cgo
+// +build darwin,!cgo
 
 package host
 

host/host_fallback.go

@@ -1,3 +1,4 @@
+//go:build !darwin && !linux && !freebsd && !openbsd && !solaris && !windows
 // +build !darwin,!linux,!freebsd,!openbsd,!solaris,!windows
 
 package host

host/host_freebsd.go

@@ -1,3 +1,4 @@
+//go:build freebsd
 // +build freebsd
 
 package host
@@ -81,7 +82,6 @@ func UsersWithContext(ctx context.Context) ([]UserStat, error) {
 	}
 
 	return ret, nil
-
 }
 
 func PlatformInformationWithContext(ctx context.Context) (string, string, string, error) {

host/host_freebsd_arm64.go

@@ -1,5 +1,6 @@
-// +build freebsd
-// +build arm64
+//go:build freebsd && arm64
+// +build freebsd,arm64
+
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs host/types_freebsd.go
 

host/host_linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package host
@@ -121,7 +122,6 @@ func UsersWithContext(ctx context.Context) ([]UserStat, error) {
 	}
 
 	return ret, nil
-
 }
 
 func getlsbStruct() (*lsbStruct, error) {
@@ -304,7 +304,6 @@ func PlatformInformationWithContext(ctx context.Context) (platform string, famil
 	}
 
 	return platform, family, version, nil
-
 }
 
 func KernelVersionWithContext(ctx context.Context) (version string, err error) {

host/host_linux_386.go

@@ -35,10 +35,12 @@ type utmp struct {
 	Addr_v6   [4]int32
 	X__unused [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type UtTv struct {
 	Sec  int32
 	Usec int32

host/host_linux_amd64.go

@@ -33,10 +33,12 @@ type utmp struct {
 	Addr_v6           [4]int32
 	X__glibc_reserved [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int64
 	Usec int64

host/host_linux_arm.go

@@ -33,10 +33,12 @@ type utmp struct {
 	Addr_v6           [4]int32
 	X__glibc_reserved [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int32
 	Usec int32

host/host_linux_arm64.go

@@ -33,10 +33,12 @@ type utmp struct {
 	Addr_v6           [4]int32
 	X__glibc_reserved [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int64
 	Usec int64

host/host_linux_mips.go

@@ -33,10 +33,12 @@ type utmp struct {
 	Addr_v6   [4]int32
 	X__unused [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int32
 	Usec int32

host/host_linux_mips64.go

@@ -33,10 +33,12 @@ type utmp struct {
 	Addr_v6   [4]int32
 	X__unused [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int32
 	Usec int32

host/host_linux_mips64le.go

@@ -33,10 +33,12 @@ type utmp struct {
 	Addr_v6   [4]int32
 	X__unused [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int32
 	Usec int32

host/host_linux_mipsle.go

@@ -33,10 +33,12 @@ type utmp struct {
 	Addr_v6   [4]int32
 	X__unused [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int32
 	Usec int32

host/host_linux_ppc64le.go

@@ -1,5 +1,6 @@
-// +build linux
-// +build ppc64le
+//go:build linux && ppc64le
+// +build linux,ppc64le
+
 // Created by cgo -godefs - DO NOT EDIT
 // cgo -godefs types_linux.go
 
@@ -35,10 +36,12 @@ type utmp struct {
 	Addr_v6           [4]int32
 	X__glibc_reserved [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int64
 	Usec int64

host/host_linux_riscv64.go

@@ -32,10 +32,12 @@ type utmp struct {
 	Addr_v6           [4]int32
 	X__glibc_reserved [20]uint8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int64
 	Usec int64

host/host_linux_s390x.go

@@ -1,5 +1,6 @@
-// +build linux
-// +build s390x
+//go:build linux && s390x
+// +build linux,s390x
+
 // Created by cgo -godefs - DO NOT EDIT
 // cgo -godefs types_linux.go
 
@@ -35,10 +36,12 @@ type utmp struct {
 	Addr_v6           [4]int32
 	X__glibc_reserved [20]int8
 }
+
 type exit_status struct {
 	Termination int16
 	Exit        int16
 }
+
 type timeval struct {
 	Sec  int64
 	Usec int64

host/host_linux_test.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package host

host/host_openbsd.go

@@ -1,3 +1,4 @@
+//go:build openbsd
 // +build openbsd
 
 package host

host/host_openbsd_386.go

@@ -1,5 +1,6 @@
-// +build openbsd
-// +build 386
+//go:build openbsd && 386
+// +build openbsd,386
+
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs host/types_openbsd.go
 

host/host_openbsd_amd64.go

@@ -25,6 +25,7 @@ type Utmp struct {
 	Host [256]int8
 	Time int64
 }
+
 type Timeval struct {
 	Sec  int64
 	Usec int64

host/host_openbsd_arm64.go

@@ -1,5 +1,6 @@
-// +build openbsd
-// +build arm64
+//go:build openbsd && arm64
+// +build openbsd,arm64
+
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs host/types_openbsd.go
 

host/host_posix.go

@@ -1,3 +1,4 @@
+//go:build linux || freebsd || openbsd || darwin || solaris
 // +build linux freebsd openbsd darwin solaris
 
 package host

host/host_windows.go

@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package host

host/types_darwin.go

@@ -1,4 +1,6 @@
+//go:build ignore
 // +build ignore
+
 // plus hand editing about timeval
 
 /*
@@ -13,5 +15,7 @@ package host
 */
 import "C"
 
-type Utmpx C.struct_utmpx
-type Timeval C.struct_timeval
+type (
+	Utmpx   C.struct_utmpx
+	Timeval C.struct_timeval
+)

host/types_freebsd.go

@@ -1,3 +1,4 @@
+//go:build ignore
 // +build ignore
 
 /*
@@ -40,5 +41,7 @@ type (
 	_C_long_long C.longlong
 )
 
-type Utmp C.struct_utmp // for FreeBSD 9.0 compatibility
-type Utmpx C.struct_futx
+type (
+	Utmp  C.struct_utmp // for FreeBSD 9.0 compatibility
+	Utmpx C.struct_futx
+)

host/types_linux.go

@@ -1,3 +1,4 @@
+//go:build ignore
 // +build ignore
 
 /*
@@ -37,6 +38,8 @@ type (
 	_C_long_long C.longlong
 )
 
-type utmp C.struct_utmp
-type exit_status C.struct_exit_status
-type timeval C.struct_timeval
+type (
+	utmp        C.struct_utmp
+	exit_status C.struct_exit_status
+	timeval     C.struct_timeval
+)

host/types_openbsd.go

@@ -1,3 +1,4 @@
+//go:build ignore
 // +build ignore
 
 /*
@@ -39,5 +40,7 @@ type (
 	_C_long_long C.longlong
 )
 
-type Utmp C.struct_utmp
-type Timeval C.struct_timeval
+type (
+	Utmp    C.struct_utmp
+	Timeval C.struct_timeval
+)

internal/common/binary.go

@@ -388,8 +388,10 @@ type coder struct {
 	buf   []byte
 }
 
-type decoder coder
-type encoder coder
+type (
+	decoder coder
+	encoder coder
+)
 
 func (d *decoder) uint8() uint8 {
 	x := d.buf[0]

internal/common/common.go

@@ -98,7 +98,6 @@ var ErrNotImplementedError = errors.New("not implemented yet")
 // ReadFile reads contents from a file
 func ReadFile(filename string) (string, error) {
 	content, err := ioutil.ReadFile(filename)
-
 	if err != nil {
 		return "", err
 	}
@@ -312,7 +311,7 @@ func PathExists(filename string) bool {
 	return false
 }
 
-//GetEnv retrieves the environment variable key. If it does not exist it returns the default.
+// GetEnv retrieves the environment variable key. If it does not exist it returns the default.
 func GetEnv(key string, dfault string, combineWith ...string) string {
 	value := os.Getenv(key)
 	if value == "" {

internal/common/common_darwin.go

@@ -1,3 +1,4 @@
+//go:build darwin
 // +build darwin
 
 package common

internal/common/common_freebsd.go

@@ -1,3 +1,4 @@
+//go:build freebsd || openbsd
 // +build freebsd openbsd
 
 package common

internal/common/common_linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package common
@@ -55,7 +56,6 @@ func NumProcs() (uint64, error) {
 }
 
 func BootTimeWithContext(ctx context.Context) (uint64, error) {
-
 	system, role, err := Virtualization()
 	if err != nil {
 		return 0, err
@@ -201,7 +201,6 @@ func VirtualizationWithContext(ctx context.Context) (string, string, error) {
 	if PathExists(filepath.Join(filename, "self", "status")) {
 		contents, err := ReadLines(filepath.Join(filename, "self", "status"))
 		if err == nil {
-
 			if StringsContains(contents, "s_context:") ||
 				StringsContains(contents, "VxID:") {
 				system = "linux-vserver"

internal/common/common_openbsd.go

@@ -1,3 +1,4 @@
+//go:build openbsd
 // +build openbsd
 
 package common

internal/common/common_test.go

@@ -37,6 +37,7 @@ func TestIntToString(t *testing.T) {
 		t.Error("could not convert")
 	}
 }
+
 func TestByteToString(t *testing.T) {
 	src := []byte{65, 66, 67}
 	dst := ByteToString(src)
@@ -63,12 +64,14 @@ func TestMustParseInt32(t *testing.T) {
 		t.Error("could not parse")
 	}
 }
+
 func TestMustParseUint64(t *testing.T) {
 	ret := mustParseUint64("11111")
 	if ret != uint64(11111) {
 		t.Error("could not parse")
 	}
 }
+
 func TestMustParseFloat64(t *testing.T) {
 	ret := mustParseFloat64("11111.11")
 	if ret != float64(11111.11) {
@@ -79,6 +82,7 @@ func TestMustParseFloat64(t *testing.T) {
 		t.Error("could not parse")
 	}
 }
+
 func TestStringsContains(t *testing.T) {
 	target, err := ReadLines("common_test.go")
 	if err != nil {

internal/common/common_unix.go

@@ -1,3 +1,4 @@
+//go:build linux || freebsd || darwin || openbsd
 // +build linux freebsd darwin openbsd
 
 package common

internal/common/common_windows.go

@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package common
@@ -162,7 +163,7 @@ func NewWin32PerformanceCounter(postName, counterName string) (*Win32Performance
 	if err != nil {
 		return nil, err
 	}
-	var counter = Win32PerformanceCounter{
+	counter := Win32PerformanceCounter{
 		Query:       query,
 		PostName:    postName,
 		CounterName: counterName,

internal/common/sleep.go

@@ -8,7 +8,7 @@ import (
 // Sleep awaits for provided interval.
 // Can be interrupted by context cancelation.
 func Sleep(ctx context.Context, interval time.Duration) error {
-	var timer = time.NewTimer(interval)
+	timer := time.NewTimer(interval)
 	select {
 	case <-ctx.Done():
 		return ctx.Err()

internal/common/sleep_test.go

@@ -11,17 +11,17 @@ import (
 
 func TestSleep(test *testing.T) {
 	const dt = 50 * time.Millisecond
-	var t = func(name string, ctx context.Context, expected error) {
+	t := func(name string, ctx context.Context, expected error) {
 		test.Run(name, func(test *testing.T) {
-			var err = common.Sleep(ctx, dt)
+			err := common.Sleep(ctx, dt)
 			if !errors.Is(err, expected) {
 				test.Errorf("expected %v, got %v", expected, err)
 			}
 		})
 	}
 
-	var ctx = context.Background()
-	var canceled, cancel = context.WithCancel(ctx)
+	ctx := context.Background()
+	canceled, cancel := context.WithCancel(ctx)
 	cancel()
 
 	t("background context", ctx, nil)

load/load_aix.go

@@ -1,3 +1,4 @@
+//go:build aix
 // +build aix
 
 package load

load/load_darwin.go

@@ -1,3 +1,4 @@
+//go:build darwin
 // +build darwin
 
 package load

load/load_fallback.go

@@ -1,3 +1,4 @@
+//go:build !darwin && !linux && !freebsd && !openbsd && !windows && !solaris && !aix
 // +build !darwin,!linux,!freebsd,!openbsd,!windows,!solaris,!aix
 
 package load

load/load_freebsd.go

@@ -1,3 +1,4 @@
+//go:build freebsd
 // +build freebsd
 
 package load

load/load_linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package load

load/load_openbsd.go

@@ -1,3 +1,4 @@
+//go:build openbsd
 // +build openbsd
 
 package load

load/load_solaris.go

@@ -1,3 +1,4 @@
+//go:build solaris
 // +build solaris
 
 package load

load/load_test.go

@@ -71,7 +71,6 @@ func TestMiscStatString(t *testing.T) {
 }
 
 func BenchmarkLoad(b *testing.B) {
-
 	loadAvg := func(t testing.TB) {
 		v, err := Avg()
 		skipIfNotImplementedErr(t, err)

load/load_windows.go

@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package load

mem/mem_aix.go

@@ -1,3 +1,4 @@
+//go:build aix
 // +build aix
 
 package mem

mem/mem_bsd.go

@@ -1,3 +1,4 @@
+//go:build freebsd || openbsd
 // +build freebsd openbsd
 
 package mem

mem/mem_bsd_test.go

@@ -1,3 +1,4 @@
+//go:build freebsd || openbsd
 // +build freebsd openbsd
 
 package mem

mem/mem_darwin.go

@@ -1,3 +1,4 @@
+//go:build darwin
 // +build darwin
 
 package mem

mem/mem_darwin_cgo.go

@@ -1,3 +1,4 @@
+//go:build darwin && cgo
 // +build darwin,cgo
 
 package mem

mem/mem_darwin_nocgo.go

@@ -1,3 +1,4 @@
+//go:build darwin && !cgo
 // +build darwin,!cgo
 
 package mem