chore: remove depend of gopsutil

component/memory/memory.go

@@ -0,0 +1,8 @@
+// Package memory return MemoryInfoStat
+// modify from https://github.com/shirou/gopsutil/tree/v4.25.1/process
+package memory
+
+type MemoryInfoStat struct {
+	RSS uint64 `json:"rss"` // bytes
+	VMS uint64 `json:"vms"` // bytes
+}

component/memory/memory_darwin.go

@@ -0,0 +1,116 @@
+package memory
+
+import (
+	"unsafe"
+
+	"github.com/ebitengine/purego"
+)
+
+const (
+	PROC_PIDTASKINFO = 4
+)
+
+type ProcTaskInfo struct {
+	Virtual_size      uint64
+	Resident_size     uint64
+	Total_user        uint64
+	Total_system      uint64
+	Threads_user      uint64
+	Threads_system    uint64
+	Policy            int32
+	Faults            int32
+	Pageins           int32
+	Cow_faults        int32
+	Messages_sent     int32
+	Messages_received int32
+	Syscalls_mach     int32
+	Syscalls_unix     int32
+	Csw               int32
+	Threadnum         int32
+	Numrunning        int32
+	Priority          int32
+}
+
+// Library represents a dynamic library loaded by purego.
+type Library struct {
+	addr  uintptr
+	path  string
+	close func()
+}
+
+func NewLibrary(path string) (*Library, error) {
+	lib, err := purego.Dlopen(path, purego.RTLD_LAZY|purego.RTLD_GLOBAL)
+	if err != nil {
+		return nil, err
+	}
+
+	closeFunc := func() {
+		purego.Dlclose(lib)
+	}
+
+	return &Library{
+		addr:  lib,
+		path:  path,
+		close: closeFunc,
+	}, nil
+}
+
+func (lib *Library) Dlsym(symbol string) (uintptr, error) {
+	return purego.Dlsym(lib.addr, symbol)
+}
+
+func GetFunc[T any](lib *Library, symbol string) T {
+	var fptr T
+	purego.RegisterLibFunc(&fptr, lib.addr, symbol)
+	return fptr
+}
+
+func (lib *Library) Close() {
+	lib.close()
+}
+
+// library paths
+const (
+	System = "/usr/lib/libSystem.B.dylib"
+)
+
+// System functions and symbols.
+type (
+	ProcPidInfoFunc func(pid, flavor int32, arg uint64, buffer uintptr, bufferSize int32) int32
+)
+
+const (
+	ProcPidInfoSym = "proc_pidinfo"
+)
+
+var (
+	procPidInfo ProcPidInfoFunc
+)
+
+func registerFuncs() (*Library, error) {
+	lib, err := NewLibrary(System)
+	if err != nil {
+		return nil, err
+	}
+
+	procPidInfo = GetFunc[ProcPidInfoFunc](lib, ProcPidInfoSym)
+
+	return lib, nil
+}
+
+func GetMemoryInfo(pid int32) (*MemoryInfoStat, error) {
+	lib, err := registerFuncs()
+	if err != nil {
+		return nil, err
+	}
+	defer lib.Close()
+
+	var ti ProcTaskInfo
+	procPidInfo(pid, PROC_PIDTASKINFO, 0, uintptr(unsafe.Pointer(&ti)), int32(unsafe.Sizeof(ti)))
+
+	ret := &MemoryInfoStat{
+		RSS: uint64(ti.Resident_size),
+		VMS: uint64(ti.Virtual_size),
+	}
+	return ret, nil
+}

component/memory/memory_falllback.go

@@ -0,0 +1,11 @@
+//go:build !darwin && !linux && !freebsd && !openbsd && !windows
+
+package memory
+
+import "errors"
+
+var ErrNotImplementedError = errors.New("not implemented yet")
+
+func GetMemoryInfo(pid int32) (*MemoryInfoStat, error) {
+	return nil, ErrNotImplementedError
+}

component/memory/memory_freebsd.go

@@ -0,0 +1,97 @@
+package memory
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	CTLKern          = 1
+	KernProc         = 14
+	KernProcPID      = 1
+)
+
+func CallSyscall(mib []int32) ([]byte, uint64, error) {
+	mibptr := unsafe.Pointer(&mib[0])
+	miblen := uint64(len(mib))
+
+	// get required buffer size
+	length := uint64(0)
+	_, _, err := unix.Syscall6(
+		unix.SYS___SYSCTL,
+		uintptr(mibptr),
+		uintptr(miblen),
+		0,
+		uintptr(unsafe.Pointer(&length)),
+		0,
+		0)
+	if err != 0 {
+		var b []byte
+		return b, length, err
+	}
+	if length == 0 {
+		var b []byte
+		return b, length, err
+	}
+	// get proc info itself
+	buf := make([]byte, length)
+	_, _, err = unix.Syscall6(
+		unix.SYS___SYSCTL,
+		uintptr(mibptr),
+		uintptr(miblen),
+		uintptr(unsafe.Pointer(&buf[0])),
+		uintptr(unsafe.Pointer(&length)),
+		0,
+		0)
+	if err != 0 {
+		return buf, length, err
+	}
+
+	return buf, length, nil
+}
+
+func parseKinfoProc(buf []byte) (KinfoProc, error) {
+	var k KinfoProc
+	br := bytes.NewReader(buf)
+	err := binary.Read(br, binary.LittleEndian, &k)
+	return k, err
+}
+
+func getKProc(pid int32) (*KinfoProc, error) {
+	mib := []int32{CTLKern, KernProc, KernProcPID, pid}
+
+	buf, length, err := CallSyscall(mib)
+	if err != nil {
+		return nil, err
+	}
+	if length != sizeOfKinfoProc {
+		return nil, errors.New("unexpected size of KinfoProc")
+	}
+
+	k, err := parseKinfoProc(buf)
+	if err != nil {
+		return nil, err
+	}
+	return &k, nil
+}
+
+func GetMemoryInfo(pid int32) (*MemoryInfoStat, error) {
+	k, err := getKProc(pid)
+	if err != nil {
+		return nil, err
+	}
+	v, err := unix.Sysctl("vm.stats.vm.v_page_size")
+	if err != nil {
+		return nil, err
+	}
+	pageSize := binary.LittleEndian.Uint16([]byte(v))
+
+	return &MemoryInfoStat{
+		RSS: uint64(k.Rssize) * uint64(pageSize),
+		VMS: uint64(k.Size),
+	}, nil
+}

component/memory/memory_freebsd_386.go

@@ -0,0 +1,119 @@
+package memory
+
+const sizeOfKinfoProc    = 0x300
+
+type Timeval struct {
+	Sec  int32
+	Usec int32
+}
+
+type Rusage struct {
+	Utime    Timeval
+	Stime    Timeval
+	Maxrss   int32
+	Ixrss    int32
+	Idrss    int32
+	Isrss    int32
+	Minflt   int32
+	Majflt   int32
+	Nswap    int32
+	Inblock  int32
+	Oublock  int32
+	Msgsnd   int32
+	Msgrcv   int32
+	Nsignals int32
+	Nvcsw    int32
+	Nivcsw   int32
+}
+
+type KinfoProc struct {
+	Structsize   int32
+	Layout       int32
+	Args         int32 /* pargs */
+	Paddr        int32 /* proc */
+	Addr         int32 /* user */
+	Tracep       int32 /* vnode */
+	Textvp       int32 /* vnode */
+	Fd           int32 /* filedesc */
+	Vmspace      int32 /* vmspace */
+	Wchan        int32
+	Pid          int32
+	Ppid         int32
+	Pgid         int32
+	Tpgid        int32
+	Sid          int32
+	Tsid         int32
+	Jobc         int16
+	Spare_short1 int16
+	Tdev         uint32
+	Siglist      [16]byte /* sigset */
+	Sigmask      [16]byte /* sigset */
+	Sigignore    [16]byte /* sigset */
+	Sigcatch     [16]byte /* sigset */
+	Uid          uint32
+	Ruid         uint32
+	Svuid        uint32
+	Rgid         uint32
+	Svgid        uint32
+	Ngroups      int16
+	Spare_short2 int16
+	Groups       [16]uint32
+	Size         uint32
+	Rssize       int32
+	Swrss        int32
+	Tsize        int32
+	Dsize        int32
+	Ssize        int32
+	Xstat        uint16
+	Acflag       uint16
+	Pctcpu       uint32
+	Estcpu       uint32
+	Slptime      uint32
+	Swtime       uint32
+	Cow          uint32
+	Runtime      uint64
+	Start        Timeval
+	Childtime    Timeval
+	Flag         int32
+	Kiflag       int32
+	Traceflag    int32
+	Stat         int8
+	Nice         int8
+	Lock         int8
+	Rqindex      int8
+	Oncpu        uint8
+	Lastcpu      uint8
+	Tdname       [17]int8
+	Wmesg        [9]int8
+	Login        [18]int8
+	Lockname     [9]int8
+	Comm         [20]int8
+	Emul         [17]int8
+	Loginclass   [18]int8
+	Sparestrings [50]int8
+	Spareints    [7]int32
+	Flag2        int32
+	Fibnum       int32
+	Cr_flags     uint32
+	Jid          int32
+	Numthreads   int32
+	Tid          int32
+	Pri          Priority
+	Rusage       Rusage
+	Rusage_ch    Rusage
+	Pcb          int32 /* pcb */
+	Kstack       int32
+	Udata        int32
+	Tdaddr       int32 /* thread */
+	Spareptrs    [6]int32
+	Sparelongs   [12]int32
+	Sflag        int32
+	Tdflags      int32
+}
+
+type Priority struct {
+	Class  uint8
+	Level  uint8
+	Native uint8
+	User   uint8
+}

component/memory/memory_freebsd_amd64.go

@@ -0,0 +1,125 @@
+package memory
+
+const sizeOfKinfoProc = 0x440
+
+type Timeval struct {
+	Sec  int64
+	Usec int64
+}
+
+type Rusage struct {
+	Utime    Timeval
+	Stime    Timeval
+	Maxrss   int64
+	Ixrss    int64
+	Idrss    int64
+	Isrss    int64
+	Minflt   int64
+	Majflt   int64
+	Nswap    int64
+	Inblock  int64
+	Oublock  int64
+	Msgsnd   int64
+	Msgrcv   int64
+	Nsignals int64
+	Nvcsw    int64
+	Nivcsw   int64
+}
+
+type KinfoProc struct {
+	Structsize     int32
+	Layout         int32
+	Args           int64 /* pargs */
+	Paddr          int64 /* proc */
+	Addr           int64 /* user */
+	Tracep         int64 /* vnode */
+	Textvp         int64 /* vnode */
+	Fd             int64 /* filedesc */
+	Vmspace        int64 /* vmspace */
+	Wchan          int64
+	Pid            int32
+	Ppid           int32
+	Pgid           int32
+	Tpgid          int32
+	Sid            int32
+	Tsid           int32
+	Jobc           int16
+	Spare_short1   int16
+	Tdev_freebsd11 uint32
+	Siglist        [16]byte /* sigset */
+	Sigmask        [16]byte /* sigset */
+	Sigignore      [16]byte /* sigset */
+	Sigcatch       [16]byte /* sigset */
+	Uid            uint32
+	Ruid           uint32
+	Svuid          uint32
+	Rgid           uint32
+	Svgid          uint32
+	Ngroups        int16
+	Spare_short2   int16
+	Groups         [16]uint32
+	Size           uint64
+	Rssize         int64
+	Swrss          int64
+	Tsize          int64
+	Dsize          int64
+	Ssize          int64
+	Xstat          uint16
+	Acflag         uint16
+	Pctcpu         uint32
+	Estcpu         uint32
+	Slptime        uint32
+	Swtime         uint32
+	Cow            uint32
+	Runtime        uint64
+	Start          Timeval
+	Childtime      Timeval
+	Flag           int64
+	Kiflag         int64
+	Traceflag      int32
+	Stat           int8
+	Nice           int8
+	Lock           int8
+	Rqindex        int8
+	Oncpu_old      uint8
+	Lastcpu_old    uint8
+	Tdname         [17]int8
+	Wmesg          [9]int8
+	Login          [18]int8
+	Lockname       [9]int8
+	Comm           [20]int8
+	Emul           [17]int8
+	Loginclass     [18]int8
+	Moretdname     [4]int8
+	Sparestrings   [46]int8
+	Spareints      [2]int32
+	Tdev           uint64
+	Oncpu          int32
+	Lastcpu        int32
+	Tracer         int32
+	Flag2          int32
+	Fibnum         int32
+	Cr_flags       uint32
+	Jid            int32
+	Numthreads     int32
+	Tid            int32
+	Pri            Priority
+	Rusage         Rusage
+	Rusage_ch      Rusage
+	Pcb            int64 /* pcb */
+	Kstack         int64
+	Udata          int64
+	Tdaddr         int64 /* thread */
+	Pd             int64 /* pwddesc, not accurate */
+	Spareptrs      [5]int64
+	Sparelongs     [12]int64
+	Sflag          int64
+	Tdflags        int64
+}
+
+type Priority struct {
+	Class  uint8
+	Level  uint8
+	Native uint8
+	User   uint8
+}

component/memory/memory_freebsd_arm.go

@@ -0,0 +1,119 @@
+package memory
+
+const sizeOfKinfoProc = 0x440
+
+type Timeval struct {
+	Sec  int64
+	Usec int64
+}
+
+type Rusage struct {
+	Utime    Timeval
+	Stime    Timeval
+	Maxrss   int32
+	Ixrss    int32
+	Idrss    int32
+	Isrss    int32
+	Minflt   int32
+	Majflt   int32
+	Nswap    int32
+	Inblock  int32
+	Oublock  int32
+	Msgsnd   int32
+	Msgrcv   int32
+	Nsignals int32
+	Nvcsw    int32
+	Nivcsw   int32
+}
+
+type KinfoProc struct {
+	Structsize   int32
+	Layout       int32
+	Args         int32 /* pargs */
+	Paddr        int32 /* proc */
+	Addr         int32 /* user */
+	Tracep       int32 /* vnode */
+	Textvp       int32 /* vnode */
+	Fd           int32 /* filedesc */
+	Vmspace      int32 /* vmspace */
+	Wchan        int32
+	Pid          int32
+	Ppid         int32
+	Pgid         int32
+	Tpgid        int32
+	Sid          int32
+	Tsid         int32
+	Jobc         int16
+	Spare_short1 int16
+	Tdev         uint32
+	Siglist      [16]byte /* sigset */
+	Sigmask      [16]byte /* sigset */
+	Sigignore    [16]byte /* sigset */
+	Sigcatch     [16]byte /* sigset */
+	Uid          uint32
+	Ruid         uint32
+	Svuid        uint32
+	Rgid         uint32
+	Svgid        uint32
+	Ngroups      int16
+	Spare_short2 int16
+	Groups       [16]uint32
+	Size         uint32
+	Rssize       int32
+	Swrss        int32
+	Tsize        int32
+	Dsize        int32
+	Ssize        int32
+	Xstat        uint16
+	Acflag       uint16
+	Pctcpu       uint32
+	Estcpu       uint32
+	Slptime      uint32
+	Swtime       uint32
+	Cow          uint32
+	Runtime      uint64
+	Start        Timeval
+	Childtime    Timeval
+	Flag         int32
+	Kiflag       int32
+	Traceflag    int32
+	Stat         int8
+	Nice         int8
+	Lock         int8
+	Rqindex      int8
+	Oncpu        uint8
+	Lastcpu      uint8
+	Tdname       [17]int8
+	Wmesg        [9]int8
+	Login        [18]int8
+	Lockname     [9]int8
+	Comm         [20]int8
+	Emul         [17]int8
+	Loginclass   [18]int8
+	Sparestrings [50]int8
+	Spareints    [4]int32
+	Flag2        int32
+	Fibnum       int32
+	Cr_flags     uint32
+	Jid          int32
+	Numthreads   int32
+	Tid          int32
+	Pri          Priority
+	Rusage       Rusage
+	Rusage_ch    Rusage
+	Pcb          int32 /* pcb */
+	Kstack       int32
+	Udata        int32
+	Tdaddr       int32 /* thread */
+	Spareptrs    [6]int64
+	Sparelongs   [12]int64
+	Sflag        int64
+	Tdflags      int64
+}
+
+type Priority struct {
+	Class  uint8
+	Level  uint8
+	Native uint8
+	User   uint8
+}

component/memory/memory_freebsd_arm64.go

@@ -0,0 +1,125 @@
+package memory
+
+const sizeOfKinfoProc = 0x440
+
+type Timeval struct {
+	Sec  int64
+	Usec int64
+}
+
+type Rusage struct {
+	Utime    Timeval
+	Stime    Timeval
+	Maxrss   int64
+	Ixrss    int64
+	Idrss    int64
+	Isrss    int64
+	Minflt   int64
+	Majflt   int64
+	Nswap    int64
+	Inblock  int64
+	Oublock  int64
+	Msgsnd   int64
+	Msgrcv   int64
+	Nsignals int64
+	Nvcsw    int64
+	Nivcsw   int64
+}
+
+type KinfoProc struct {
+	Structsize     int32
+	Layout         int32
+	Args           int64 /* pargs */
+	Paddr          int64 /* proc */
+	Addr           int64 /* user */
+	Tracep         int64 /* vnode */
+	Textvp         int64 /* vnode */
+	Fd             int64 /* filedesc */
+	Vmspace        int64 /* vmspace */
+	Wchan          int64
+	Pid            int32
+	Ppid           int32
+	Pgid           int32
+	Tpgid          int32
+	Sid            int32
+	Tsid           int32
+	Jobc           int16
+	Spare_short1   int16
+	Tdev_freebsd11 uint32
+	Siglist        [16]byte /* sigset */
+	Sigmask        [16]byte /* sigset */
+	Sigignore      [16]byte /* sigset */
+	Sigcatch       [16]byte /* sigset */
+	Uid            uint32
+	Ruid           uint32
+	Svuid          uint32
+	Rgid           uint32
+	Svgid          uint32
+	Ngroups        int16
+	Spare_short2   int16
+	Groups         [16]uint32
+	Size           uint64
+	Rssize         int64
+	Swrss          int64
+	Tsize          int64
+	Dsize          int64
+	Ssize          int64
+	Xstat          uint16
+	Acflag         uint16
+	Pctcpu         uint32
+	Estcpu         uint32
+	Slptime        uint32
+	Swtime         uint32
+	Cow            uint32
+	Runtime        uint64
+	Start          Timeval
+	Childtime      Timeval
+	Flag           int64
+	Kiflag         int64
+	Traceflag      int32
+	Stat           uint8
+	Nice           int8
+	Lock           uint8
+	Rqindex        uint8
+	Oncpu_old      uint8
+	Lastcpu_old    uint8
+	Tdname         [17]uint8
+	Wmesg          [9]uint8
+	Login          [18]uint8
+	Lockname       [9]uint8
+	Comm           [20]int8 // changed from uint8 by hand
+	Emul           [17]uint8
+	Loginclass     [18]uint8
+	Moretdname     [4]uint8
+	Sparestrings   [46]uint8
+	Spareints      [2]int32
+	Tdev           uint64
+	Oncpu          int32
+	Lastcpu        int32
+	Tracer         int32
+	Flag2          int32
+	Fibnum         int32
+	Cr_flags       uint32
+	Jid            int32
+	Numthreads     int32
+	Tid            int32
+	Pri            Priority
+	Rusage         Rusage
+	Rusage_ch      Rusage
+	Pcb            int64 /* pcb */
+	Kstack         int64
+	Udata          int64
+	Tdaddr         int64 /* thread */
+	Pd             int64 /* pwddesc, not accurate */
+	Spareptrs      [5]int64
+	Sparelongs     [12]int64
+	Sflag          int64
+	Tdflags        int64
+}
+
+type Priority struct {
+	Class  uint8
+	Level  uint8
+	Native uint8
+	User   uint8
+}

component/memory/memory_linux.go

@@ -0,0 +1,37 @@
+package memory
+
+import (
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+var pageSize = uint64(os.Getpagesize())
+
+func GetMemoryInfo(pid int32) (*MemoryInfoStat, error) {
+	proc := os.Getenv("HOST_PROC")
+	if proc == "" {
+		proc = "/proc"
+	}
+	memPath := filepath.Join(proc, strconv.Itoa(int(pid)), "statm")
+	contents, err := os.ReadFile(memPath)
+	if err != nil {
+		return nil, err
+	}
+	fields := strings.Split(string(contents), " ")
+
+	vms, err := strconv.ParseUint(fields[0], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	rss, err := strconv.ParseUint(fields[1], 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	memInfo := &MemoryInfoStat{
+		RSS: rss * pageSize,
+		VMS: vms * pageSize,
+	}
+	return memInfo, nil
+}

component/memory/memory_openbsd.go

@@ -0,0 +1,95 @@
+package memory
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	CTLKern     = 1
+	KernProc    = 14
+	KernProcPID = 1
+)
+
+func callKernProcSyscall(op int32, arg int32) ([]byte, uint64, error) {
+	mib := []int32{CTLKern, KernProc, op, arg, sizeOfKinfoProc, 0}
+	mibptr := unsafe.Pointer(&mib[0])
+	miblen := uint64(len(mib))
+	length := uint64(0)
+	_, _, err := unix.Syscall6(
+		unix.SYS___SYSCTL,
+		uintptr(mibptr),
+		uintptr(miblen),
+		0,
+		uintptr(unsafe.Pointer(&length)),
+		0,
+		0)
+	if err != 0 {
+		return nil, length, err
+	}
+
+	count := int32(length / uint64(sizeOfKinfoProc))
+	mib = []int32{CTLKern, KernProc, op, arg, sizeOfKinfoProc, count}
+	mibptr = unsafe.Pointer(&mib[0])
+	miblen = uint64(len(mib))
+	// get proc info itself
+	buf := make([]byte, length)
+	_, _, err = unix.Syscall6(
+		unix.SYS___SYSCTL,
+		uintptr(mibptr),
+		uintptr(miblen),
+		uintptr(unsafe.Pointer(&buf[0])),
+		uintptr(unsafe.Pointer(&length)),
+		0,
+		0)
+	if err != 0 {
+		return buf, length, err
+	}
+
+	return buf, length, nil
+}
+
+func parseKinfoProc(buf []byte) (KinfoProc, error) {
+	var k KinfoProc
+	br := bytes.NewReader(buf)
+	err := binary.Read(br, binary.LittleEndian, &k)
+	return k, err
+}
+
+func getKProc(pid int32) (*KinfoProc, error) {
+	buf, length, err := callKernProcSyscall(KernProcPID, pid)
+	if err != nil {
+		return nil, err
+	}
+	if length != sizeOfKinfoProc {
+		return nil, errors.New("unexpected size of KinfoProc")
+	}
+
+	k, err := parseKinfoProc(buf)
+	if err != nil {
+		return nil, err
+	}
+	return &k, nil
+}
+
+func GetMemoryInfo(pid int32) (*MemoryInfoStat, error) {
+	k, err := getKProc(pid)
+	if err != nil {
+		return nil, err
+	}
+	uvmexp, err := unix.SysctlUvmexp("vm.uvmexp")
+	if err != nil {
+		return nil, err
+	}
+	pageSize := uint64(uvmexp.Pagesize)
+
+	return &MemoryInfoStat{
+		RSS: uint64(k.Vm_rssize) * pageSize,
+		VMS: uint64(k.Vm_tsize) + uint64(k.Vm_dsize) +
+			uint64(k.Vm_ssize),
+	}, nil
+}

component/memory/memory_openbsd_386.go

@@ -0,0 +1,99 @@
+package memory
+
+const sizeOfKinfoProc = 0x264
+
+type KinfoProc struct {
+	Forw         uint64
+	Back         uint64
+	Paddr        uint64
+	Addr         uint64
+	Fd           uint64
+	Stats        uint64
+	Limit        uint64
+	Vmspace      uint64
+	Sigacts      uint64
+	Sess         uint64
+	Tsess        uint64
+	Ru           uint64
+	Eflag        int32
+	Exitsig      int32
+	Flag         int32
+	Pid          int32
+	Ppid         int32
+	Sid          int32
+	X_pgid       int32
+	Tpgid        int32
+	Uid          uint32
+	Ruid         uint32
+	Gid          uint32
+	Rgid         uint32
+	Groups       [16]uint32
+	Ngroups      int16
+	Jobc         int16
+	Tdev         uint32
+	Estcpu       uint32
+	Rtime_sec    uint32
+	Rtime_usec   uint32
+	Cpticks      int32
+	Pctcpu       uint32
+	Swtime       uint32
+	Slptime      uint32
+	Schedflags   int32
+	Uticks       uint64
+	Sticks       uint64
+	Iticks       uint64
+	Tracep       uint64
+	Traceflag    int32
+	Holdcnt      int32
+	Siglist      int32
+	Sigmask      uint32
+	Sigignore    uint32
+	Sigcatch     uint32
+	Stat         int8
+	Priority     uint8
+	Usrpri       uint8
+	Nice         uint8
+	Xstat        uint16
+	Acflag       uint16
+	Comm         [24]int8
+	Wmesg        [8]int8
+	Wchan        uint64
+	Login        [32]int8
+	Vm_rssize    int32
+	Vm_tsize     int32
+	Vm_dsize     int32
+	Vm_ssize     int32
+	Uvalid       int64
+	Ustart_sec   uint64
+	Ustart_usec  uint32
+	Uutime_sec   uint32
+	Uutime_usec  uint32
+	Ustime_sec   uint32
+	Ustime_usec  uint32
+	Uru_maxrss   uint64
+	Uru_ixrss    uint64
+	Uru_idrss    uint64
+	Uru_isrss    uint64
+	Uru_minflt   uint64
+	Uru_majflt   uint64
+	Uru_nswap    uint64
+	Uru_inblock  uint64
+	Uru_oublock  uint64
+	Uru_msgsnd   uint64
+	Uru_msgrcv   uint64
+	Uru_nsignals uint64
+	Uru_nvcsw    uint64
+	Uru_nivcsw   uint64
+	Uctime_sec   uint32
+	Uctime_usec  uint32
+	Psflags      int32
+	Spare        int32
+	Svuid        uint32
+	Svgid        uint32
+	Emul         [8]int8
+	Rlim_rss_cur uint64
+	Cpuid        uint64
+	Vm_map_size  uint64
+	Tid          int32
+	Rtableid     uint32
+}

component/memory/memory_openbsd_amd64.go

@@ -0,0 +1,100 @@
+package memory
+
+const sizeOfKinfoProc = 0x268
+
+type KinfoProc struct {
+	Forw         uint64
+	Back         uint64
+	Paddr        uint64
+	Addr         uint64
+	Fd           uint64
+	Stats        uint64
+	Limit        uint64
+	Vmspace      uint64
+	Sigacts      uint64
+	Sess         uint64
+	Tsess        uint64
+	Ru           uint64
+	Eflag        int32
+	Exitsig      int32
+	Flag         int32
+	Pid          int32
+	Ppid         int32
+	Sid          int32
+	X_pgid       int32
+	Tpgid        int32
+	Uid          uint32
+	Ruid         uint32
+	Gid          uint32
+	Rgid         uint32
+	Groups       [16]uint32
+	Ngroups      int16
+	Jobc         int16
+	Tdev         uint32
+	Estcpu       uint32
+	Rtime_sec    uint32
+	Rtime_usec   uint32
+	Cpticks      int32
+	Pctcpu       uint32
+	Swtime       uint32
+	Slptime      uint32
+	Schedflags   int32
+	Uticks       uint64
+	Sticks       uint64
+	Iticks       uint64
+	Tracep       uint64
+	Traceflag    int32
+	Holdcnt      int32
+	Siglist      int32
+	Sigmask      uint32
+	Sigignore    uint32
+	Sigcatch     uint32
+	Stat         int8
+	Priority     uint8
+	Usrpri       uint8
+	Nice         uint8
+	Xstat        uint16
+	Acflag       uint16
+	Comm         [24]int8
+	Wmesg        [8]int8
+	Wchan        uint64
+	Login        [32]int8
+	Vm_rssize    int32
+	Vm_tsize     int32
+	Vm_dsize     int32
+	Vm_ssize     int32
+	Uvalid       int64
+	Ustart_sec   uint64
+	Ustart_usec  uint32
+	Uutime_sec   uint32
+	Uutime_usec  uint32
+	Ustime_sec   uint32
+	Ustime_usec  uint32
+	Pad_cgo_0    [4]byte
+	Uru_maxrss   uint64
+	Uru_ixrss    uint64
+	Uru_idrss    uint64
+	Uru_isrss    uint64
+	Uru_minflt   uint64
+	Uru_majflt   uint64
+	Uru_nswap    uint64
+	Uru_inblock  uint64
+	Uru_oublock  uint64
+	Uru_msgsnd   uint64
+	Uru_msgrcv   uint64
+	Uru_nsignals uint64
+	Uru_nvcsw    uint64
+	Uru_nivcsw   uint64
+	Uctime_sec   uint32
+	Uctime_usec  uint32
+	Psflags      int32
+	Spare        int32
+	Svuid        uint32
+	Svgid        uint32
+	Emul         [8]int8
+	Rlim_rss_cur uint64
+	Cpuid        uint64
+	Vm_map_size  uint64
+	Tid          int32
+	Rtableid     uint32
+}

component/memory/memory_openbsd_arm.go

@@ -0,0 +1,99 @@
+package memory
+
+const sizeOfKinfoProc = 0x264
+
+type KinfoProc struct {
+	Forw         uint64
+	Back         uint64
+	Paddr        uint64
+	Addr         uint64
+	Fd           uint64
+	Stats        uint64
+	Limit        uint64
+	Vmspace      uint64
+	Sigacts      uint64
+	Sess         uint64
+	Tsess        uint64
+	Ru           uint64
+	Eflag        int32
+	Exitsig      int32
+	Flag         int32
+	Pid          int32
+	Ppid         int32
+	Sid          int32
+	X_pgid       int32
+	Tpgid        int32
+	Uid          uint32
+	Ruid         uint32
+	Gid          uint32
+	Rgid         uint32
+	Groups       [16]uint32
+	Ngroups      int16
+	Jobc         int16
+	Tdev         uint32
+	Estcpu       uint32
+	Rtime_sec    uint32
+	Rtime_usec   uint32
+	Cpticks      int32
+	Pctcpu       uint32
+	Swtime       uint32
+	Slptime      uint32
+	Schedflags   int32
+	Uticks       uint64
+	Sticks       uint64
+	Iticks       uint64
+	Tracep       uint64
+	Traceflag    int32
+	Holdcnt      int32
+	Siglist      int32
+	Sigmask      uint32
+	Sigignore    uint32
+	Sigcatch     uint32
+	Stat         int8
+	Priority     uint8
+	Usrpri       uint8
+	Nice         uint8
+	Xstat        uint16
+	Acflag       uint16
+	Comm         [24]int8
+	Wmesg        [8]int8
+	Wchan        uint64
+	Login        [32]int8
+	Vm_rssize    int32
+	Vm_tsize     int32
+	Vm_dsize     int32
+	Vm_ssize     int32
+	Uvalid       int64
+	Ustart_sec   uint64
+	Ustart_usec  uint32
+	Uutime_sec   uint32
+	Uutime_usec  uint32
+	Ustime_sec   uint32
+	Ustime_usec  uint32
+	Uru_maxrss   uint64
+	Uru_ixrss    uint64
+	Uru_idrss    uint64
+	Uru_isrss    uint64
+	Uru_minflt   uint64
+	Uru_majflt   uint64
+	Uru_nswap    uint64
+	Uru_inblock  uint64
+	Uru_oublock  uint64
+	Uru_msgsnd   uint64
+	Uru_msgrcv   uint64
+	Uru_nsignals uint64
+	Uru_nvcsw    uint64
+	Uru_nivcsw   uint64
+	Uctime_sec   uint32
+	Uctime_usec  uint32
+	Psflags      int32
+	Spare        int32
+	Svuid        uint32
+	Svgid        uint32
+	Emul         [8]int8
+	Rlim_rss_cur uint64
+	Cpuid        uint64
+	Vm_map_size  uint64
+	Tid          int32
+	Rtableid     uint32
+}

component/memory/memory_openbsd_arm64.go

@@ -0,0 +1,100 @@
+package memory
+
+const sizeOfKinfoProc = 0x270
+
+type KinfoProc struct {
+	Forw         uint64
+	Back         uint64
+	Paddr        uint64
+	Addr         uint64
+	Fd           uint64
+	Stats        uint64
+	Limit        uint64
+	Vmspace      uint64
+	Sigacts      uint64
+	Sess         uint64
+	Tsess        uint64
+	Ru           uint64
+	Eflag        int32
+	Exitsig      int32
+	Flag         int32
+	Pid          int32
+	Ppid         int32
+	Sid          int32
+	X_pgid       int32
+	Tpgid        int32
+	Uid          uint32
+	Ruid         uint32
+	Gid          uint32
+	Rgid         uint32
+	Groups       [16]uint32
+	Ngroups      int16
+	Jobc         int16
+	Tdev         uint32
+	Estcpu       uint32
+	Rtime_sec    uint32
+	Rtime_usec   uint32
+	Cpticks      int32
+	Pctcpu       uint32
+	Swtime       uint32
+	Slptime      uint32
+	Schedflags   int32
+	Uticks       uint64
+	Sticks       uint64
+	Iticks       uint64
+	Tracep       uint64
+	Traceflag    int32
+	Holdcnt      int32
+	Siglist      int32
+	Sigmask      uint32
+	Sigignore    uint32
+	Sigcatch     uint32
+	Stat         int8
+	Priority     uint8
+	Usrpri       uint8
+	Nice         uint8
+	Xstat        uint16
+	Acflag       uint16
+	Comm         [24]int8
+	Wmesg        [8]uint8
+	Wchan        uint64
+	Login        [32]uint8
+	Vm_rssize    int32
+	Vm_tsize     int32
+	Vm_dsize     int32
+	Vm_ssize     int32
+	Uvalid       int64
+	Ustart_sec   uint64
+	Ustart_usec  uint32
+	Uutime_sec   uint32
+	Uutime_usec  uint32
+	Ustime_sec   uint32
+	Ustime_usec  uint32
+	Uru_maxrss   uint64
+	Uru_ixrss    uint64
+	Uru_idrss    uint64
+	Uru_isrss    uint64
+	Uru_minflt   uint64
+	Uru_majflt   uint64
+	Uru_nswap    uint64
+	Uru_inblock  uint64
+	Uru_oublock  uint64
+	Uru_msgsnd   uint64
+	Uru_msgrcv   uint64
+	Uru_nsignals uint64
+	Uru_nvcsw    uint64
+	Uru_nivcsw   uint64
+	Uctime_sec   uint32
+	Uctime_usec  uint32
+	Psflags      uint32
+	Spare        int32
+	Svuid        uint32
+	Svgid        uint32
+	Emul         [8]uint8
+	Rlim_rss_cur uint64
+	Cpuid        uint64
+	Vm_map_size  uint64
+	Tid          int32
+	Rtableid     uint32
+	Pledge       uint64
+}

component/memory/memory_openbsd_riscv64.go

@@ -0,0 +1,101 @@
+package memory
+
+const sizeOfKinfoProc = 0x288
+
+type KinfoProc struct {
+	Forw         uint64
+	Back         uint64
+	Paddr        uint64
+	Addr         uint64
+	Fd           uint64
+	Stats        uint64
+	Limit        uint64
+	Vmspace      uint64
+	Sigacts      uint64
+	Sess         uint64
+	Tsess        uint64
+	Ru           uint64
+	Eflag        int32
+	Exitsig      int32
+	Flag         int32
+	Pid          int32
+	Ppid         int32
+	Sid          int32
+	X_pgid       int32
+	Tpgid        int32
+	Uid          uint32
+	Ruid         uint32
+	Gid          uint32
+	Rgid         uint32
+	Groups       [16]uint32
+	Ngroups      int16
+	Jobc         int16
+	Tdev         uint32
+	Estcpu       uint32
+	Rtime_sec    uint32
+	Rtime_usec   uint32
+	Cpticks      int32
+	Pctcpu       uint32
+	Swtime       uint32
+	Slptime      uint32
+	Schedflags   int32
+	Uticks       uint64
+	Sticks       uint64
+	Iticks       uint64
+	Tracep       uint64
+	Traceflag    int32
+	Holdcnt      int32
+	Siglist      int32
+	Sigmask      uint32
+	Sigignore    uint32
+	Sigcatch     uint32
+	Stat         int8
+	Priority     uint8
+	Usrpri       uint8
+	Nice         uint8
+	Xstat        uint16
+	Spare        uint16
+	Comm         [24]int8
+	Wmesg        [8]uint8
+	Wchan        uint64
+	Login        [32]uint8
+	Vm_rssize    int32
+	Vm_tsize     int32
+	Vm_dsize     int32
+	Vm_ssize     int32
+	Uvalid       int64
+	Ustart_sec   uint64
+	Ustart_usec  uint32
+	Uutime_sec   uint32
+	Uutime_usec  uint32
+	Ustime_sec   uint32
+	Ustime_usec  uint32
+	Uru_maxrss   uint64
+	Uru_ixrss    uint64
+	Uru_idrss    uint64
+	Uru_isrss    uint64
+	Uru_minflt   uint64
+	Uru_majflt   uint64
+	Uru_nswap    uint64
+	Uru_inblock  uint64
+	Uru_oublock  uint64
+	Uru_msgsnd   uint64
+	Uru_msgrcv   uint64
+	Uru_nsignals uint64
+	Uru_nvcsw    uint64
+	Uru_nivcsw   uint64
+	Uctime_sec   uint32
+	Uctime_usec  uint32
+	Psflags      uint32
+	Acflag       uint32
+	Svuid        uint32
+	Svgid        uint32
+	Emul         [8]uint8
+	Rlim_rss_cur uint64
+	Cpuid        uint64
+	Vm_map_size  uint64
+	Tid          int32
+	Rtableid     uint32
+	Pledge       uint64
+	Name         [24]uint8
+}

component/memory/memory_windows.go

@@ -0,0 +1,66 @@
+package memory
+
+import (
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+var (
+	modpsapi                 = windows.NewLazySystemDLL("psapi.dll")
+	procGetProcessMemoryInfo = modpsapi.NewProc("GetProcessMemoryInfo")
+)
+
+const processQueryInformation = windows.PROCESS_QUERY_LIMITED_INFORMATION
+
+type PROCESS_MEMORY_COUNTERS struct {
+	CB                         uint32
+	PageFaultCount             uint32
+	PeakWorkingSetSize         uint64
+	WorkingSetSize             uint64
+	QuotaPeakPagedPoolUsage    uint64
+	QuotaPagedPoolUsage        uint64
+	QuotaPeakNonPagedPoolUsage uint64
+	QuotaNonPagedPoolUsage     uint64
+	PagefileUsage              uint64
+	PeakPagefileUsage          uint64
+}
+
+func getProcessMemoryInfo(h windows.Handle, mem *PROCESS_MEMORY_COUNTERS) (err error) {
+	r1, _, e1 := syscall.Syscall(procGetProcessMemoryInfo.Addr(), 3, uintptr(h), uintptr(unsafe.Pointer(mem)), uintptr(unsafe.Sizeof(*mem)))
+	if r1 == 0 {
+		if e1 != 0 {
+			err = error(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func getMemoryInfo(pid int32) (PROCESS_MEMORY_COUNTERS, error) {
+	var mem PROCESS_MEMORY_COUNTERS
+	c, err := windows.OpenProcess(processQueryInformation, false, uint32(pid))
+	if err != nil {
+		return mem, err
+	}
+	defer windows.CloseHandle(c)
+	if err := getProcessMemoryInfo(c, &mem); err != nil {
+		return mem, err
+	}
+
+	return mem, err
+}
+
+func GetMemoryInfo(pid int32) (*MemoryInfoStat, error) {
+	mem, err := getMemoryInfo(pid)
+	if err != nil {
+		return nil, err
+	}
+	ret := &MemoryInfoStat{
+		RSS: uint64(mem.WorkingSetSize),
+		VMS: uint64(mem.PagefileUsage),
+	}
+	return ret, nil
+}