891 lines
21 KiB
Go
891 lines
21 KiB
Go
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// +build linux
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package process
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import (
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"bufio"
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"math"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"syscall"
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"github.com/shirou/gopsutil/cpu"
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"github.com/shirou/gopsutil/host"
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"github.com/shirou/gopsutil/internal/common"
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"github.com/shirou/gopsutil/net"
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)
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var (
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ErrorNoChildren = errors.New("process does not have children")
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PageSize = uint64(os.Getpagesize())
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)
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const (
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PrioProcess = 0 // linux/resource.h
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ClockTicks = 100 // C.sysconf(C._SC_CLK_TCK)
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)
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// MemoryInfoExStat is different between OSes
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type MemoryInfoExStat struct {
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RSS uint64 `json:"rss"` // bytes
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VMS uint64 `json:"vms"` // bytes
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Shared uint64 `json:"shared"` // bytes
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Text uint64 `json:"text"` // bytes
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Lib uint64 `json:"lib"` // bytes
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Data uint64 `json:"data"` // bytes
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Dirty uint64 `json:"dirty"` // bytes
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}
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func (m MemoryInfoExStat) String() string {
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s, _ := json.Marshal(m)
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return string(s)
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}
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type MemoryMapsStat struct {
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Path string `json:"path"`
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Rss uint64 `json:"rss"`
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Size uint64 `json:"size"`
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Pss uint64 `json:"pss"`
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SharedClean uint64 `json:"sharedClean"`
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SharedDirty uint64 `json:"sharedDirty"`
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PrivateClean uint64 `json:"privateClean"`
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PrivateDirty uint64 `json:"privateDirty"`
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Referenced uint64 `json:"referenced"`
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Anonymous uint64 `json:"anonymous"`
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Swap uint64 `json:"swap"`
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}
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// String returns JSON value of the process.
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func (m MemoryMapsStat) String() string {
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s, _ := json.Marshal(m)
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return string(s)
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}
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// NewProcess creates a new Process instance, it only stores the pid and
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// checks that the process exists. Other method on Process can be used
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// to get more information about the process. An error will be returned
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// if the process does not exist.
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func NewProcess(pid int32) (*Process, error) {
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p := &Process{
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Pid: int32(pid),
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}
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file, err := os.Open(common.HostProc(strconv.Itoa(int(p.Pid))))
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defer file.Close()
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return p, err
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}
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// Ppid returns Parent Process ID of the process.
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func (p *Process) Ppid() (int32, error) {
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_, ppid, _, _, _, err := p.fillFromStat()
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if err != nil {
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return -1, err
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}
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return ppid, nil
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}
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// Name returns name of the process.
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func (p *Process) Name() (string, error) {
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if p.name == "" {
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if err := p.fillFromStatus(); err != nil {
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return "", err
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}
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}
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return p.name, nil
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}
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// Exe returns executable path of the process.
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func (p *Process) Exe() (string, error) {
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return p.fillFromExe()
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}
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// Cmdline returns the command line arguments of the process as a string with
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// each argument separated by 0x20 ascii character.
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func (p *Process) Cmdline() (string, error) {
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return p.fillFromCmdline()
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}
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// CmdlineSlice returns the command line arguments of the process as a slice with each
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// element being an argument.
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func (p *Process) CmdlineSlice() ([]string, error) {
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return p.fillSliceFromCmdline()
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}
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// CreateTime returns created time of the process in seconds since the epoch, in UTC.
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func (p *Process) CreateTime() (int64, error) {
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_, _, _, createTime, _, err := p.fillFromStat()
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if err != nil {
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return 0, err
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}
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return createTime, nil
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}
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// Cwd returns current working directory of the process.
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func (p *Process) Cwd() (string, error) {
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return p.fillFromCwd()
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}
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// Parent returns parent Process of the process.
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func (p *Process) Parent() (*Process, error) {
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err := p.fillFromStatus()
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if err != nil {
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return nil, err
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}
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if p.parent == 0 {
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return nil, fmt.Errorf("wrong number of parents")
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}
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return NewProcess(p.parent)
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}
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// Status returns the process status.
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// Return value could be one of these.
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// R: Running S: Sleep T: Stop I: Idle
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// Z: Zombie W: Wait L: Lock
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// The charactor is same within all supported platforms.
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func (p *Process) Status() (string, error) {
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err := p.fillFromStatus()
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if err != nil {
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return "", err
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}
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return p.status, nil
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}
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// Uids returns user ids of the process as a slice of the int
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func (p *Process) Uids() ([]int32, error) {
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err := p.fillFromStatus()
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if err != nil {
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return []int32{}, err
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}
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return p.uids, nil
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}
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// Gids returns group ids of the process as a slice of the int
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func (p *Process) Gids() ([]int32, error) {
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err := p.fillFromStatus()
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if err != nil {
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return []int32{}, err
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}
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return p.gids, nil
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}
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// Terminal returns a terminal which is associated with the process.
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func (p *Process) Terminal() (string, error) {
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terminal, _, _, _, _, err := p.fillFromStat()
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if err != nil {
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return "", err
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}
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return terminal, nil
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}
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// Nice returns a nice value (priority).
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// Notice: gopsutil can not set nice value.
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func (p *Process) Nice() (int32, error) {
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_, _, _, _, nice, err := p.fillFromStat()
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if err != nil {
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return 0, err
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}
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return nice, nil
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}
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// IOnice returns process I/O nice value (priority).
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func (p *Process) IOnice() (int32, error) {
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return 0, common.ErrNotImplementedError
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}
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// Rlimit returns Resource Limits.
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func (p *Process) Rlimit() ([]RlimitStat, error) {
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return p.fillFromLimits()
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}
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// IOCounters returns IO Counters.
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func (p *Process) IOCounters() (*IOCountersStat, error) {
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return p.fillFromIO()
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}
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// NumCtxSwitches returns the number of the context switches of the process.
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func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
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err := p.fillFromStatus()
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if err != nil {
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return nil, err
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}
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return p.numCtxSwitches, nil
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}
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// NumFDs returns the number of File Descriptors used by the process.
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func (p *Process) NumFDs() (int32, error) {
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numFds, _, err := p.fillFromfd()
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return numFds, err
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}
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// NumThreads returns the number of threads used by the process.
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func (p *Process) NumThreads() (int32, error) {
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err := p.fillFromStatus()
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if err != nil {
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return 0, err
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}
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return p.numThreads, nil
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}
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// Threads returns a map of threads
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//
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// Notice: Not implemented yet. always returns empty map.
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func (p *Process) Threads() (map[string]string, error) {
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ret := make(map[string]string, 0)
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return ret, nil
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}
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// Times returns CPU times of the process.
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func (p *Process) Times() (*cpu.TimesStat, error) {
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_, _, cpuTimes, _, _, err := p.fillFromStat()
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if err != nil {
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return nil, err
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}
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return cpuTimes, nil
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}
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// CPUAffinity returns CPU affinity of the process.
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//
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// Notice: Not implemented yet.
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func (p *Process) CPUAffinity() ([]int32, error) {
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return nil, common.ErrNotImplementedError
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}
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// MemoryInfo returns platform in-dependend memory information, such as RSS, VMS and Swap
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func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
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meminfo, _, err := p.fillFromStatm()
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if err != nil {
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return nil, err
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}
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return meminfo, nil
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}
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// MemoryInfoEx returns platform dependend memory information.
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func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
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_, memInfoEx, err := p.fillFromStatm()
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if err != nil {
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return nil, err
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}
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return memInfoEx, nil
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}
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// Children returns a slice of Process of the process.
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func (p *Process) Children() ([]*Process, error) {
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pids, err := common.CallPgrep(invoke, p.Pid)
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if err != nil {
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if pids == nil || len(pids) == 0 {
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return nil, ErrorNoChildren
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}
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return nil, err
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}
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ret := make([]*Process, 0, len(pids))
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for _, pid := range pids {
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np, err := NewProcess(pid)
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if err != nil {
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return nil, err
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}
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ret = append(ret, np)
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}
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return ret, nil
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}
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// OpenFiles returns a slice of OpenFilesStat opend by the process.
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// OpenFilesStat includes a file path and file descriptor.
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func (p *Process) OpenFiles() ([]OpenFilesStat, error) {
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_, ofs, err := p.fillFromfd()
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if err != nil {
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return nil, err
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}
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ret := make([]OpenFilesStat, len(ofs))
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for i, o := range ofs {
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ret[i] = *o
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}
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return ret, nil
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}
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// Connections returns a slice of net.ConnectionStat used by the process.
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// This returns all kind of the connection. This measn TCP, UDP or UNIX.
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func (p *Process) Connections() ([]net.ConnectionStat, error) {
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return net.ConnectionsPid("all", p.Pid)
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}
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// NetIOCounters returns NetIOCounters of the process.
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func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
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filename := common.HostProc(strconv.Itoa(int(p.Pid)), "net/dev")
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return net.IOCountersByFile(pernic, filename)
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}
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// IsRunning returns whether the process is running or not.
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// Not implemented yet.
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func (p *Process) IsRunning() (bool, error) {
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return true, common.ErrNotImplementedError
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}
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// MemoryMaps get memory maps from /proc/(pid)/smaps
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func (p *Process) MemoryMaps(grouped bool) (*[]MemoryMapsStat, error) {
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pid := p.Pid
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var ret []MemoryMapsStat
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smapsPath := common.HostProc(strconv.Itoa(int(pid)), "smaps")
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contents, err := ioutil.ReadFile(smapsPath)
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if err != nil {
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return nil, err
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}
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lines := strings.Split(string(contents), "\n")
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// function of parsing a block
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getBlock := func(first_line []string, block []string) (MemoryMapsStat, error) {
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m := MemoryMapsStat{}
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m.Path = first_line[len(first_line)-1]
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for _, line := range block {
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if strings.Contains(line, "VmFlags") {
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continue
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}
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field := strings.Split(line, ":")
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if len(field) < 2 {
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continue
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}
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v := strings.Trim(field[1], " kB") // remove last "kB"
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t, err := strconv.ParseUint(v, 10, 64)
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if err != nil {
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return m, err
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}
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switch field[0] {
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case "Size":
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m.Size = t
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case "Rss":
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m.Rss = t
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case "Pss":
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m.Pss = t
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case "Shared_Clean":
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m.SharedClean = t
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case "Shared_Dirty":
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m.SharedDirty = t
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case "Private_Clean":
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m.PrivateClean = t
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case "Private_Dirty":
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m.PrivateDirty = t
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case "Referenced":
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m.Referenced = t
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case "Anonymous":
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m.Anonymous = t
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case "Swap":
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m.Swap = t
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}
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}
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return m, nil
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}
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blocks := make([]string, 16)
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for _, line := range lines {
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field := strings.Split(line, " ")
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if strings.HasSuffix(field[0], ":") == false {
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// new block section
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if len(blocks) > 0 {
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|
|
g, err := getBlock(field, blocks)
|
||
|
|
if err != nil {
|
||
|
|
return &ret, err
|
||
|
|
}
|
||
|
|
ret = append(ret, g)
|
||
|
|
}
|
||
|
|
// starts new block
|
||
|
|
blocks = make([]string, 16)
|
||
|
|
} else {
|
||
|
|
blocks = append(blocks, line)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return &ret, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
** Internal functions
|
||
|
|
**/
|
||
|
|
|
||
|
|
func limitToInt(val string) (int32, error) {
|
||
|
|
if val == "unlimited" {
|
||
|
|
return math.MaxInt32, nil
|
||
|
|
} else {
|
||
|
|
res, err := strconv.ParseInt(val, 10, 32)
|
||
|
|
if err != nil {
|
||
|
|
return 0, err
|
||
|
|
}
|
||
|
|
return int32(res), nil
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get num_fds from /proc/(pid)/limits
|
||
|
|
func (p *Process) fillFromLimits() ([]RlimitStat, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
limitsFile := common.HostProc(strconv.Itoa(int(pid)), "limits")
|
||
|
|
d, err := os.Open(limitsFile)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
defer d.Close()
|
||
|
|
|
||
|
|
var limitStats []RlimitStat
|
||
|
|
|
||
|
|
limitsScanner := bufio.NewScanner(d)
|
||
|
|
for limitsScanner.Scan() {
|
||
|
|
var statItem RlimitStat
|
||
|
|
|
||
|
|
str := strings.Fields(limitsScanner.Text())
|
||
|
|
|
||
|
|
// Remove the header line
|
||
|
|
if strings.Contains(str[len(str)-1], "Units") {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
|
||
|
|
// Assert that last item is a Hard limit
|
||
|
|
statItem.Hard, err = limitToInt(str[len(str)-1])
|
||
|
|
if err != nil {
|
||
|
|
// On error remove last item an try once again since it can be unit or header line
|
||
|
|
str = str[:len(str)-1]
|
||
|
|
statItem.Hard, err = limitToInt(str[len(str)-1])
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Remove last item from string
|
||
|
|
str = str[:len(str)-1]
|
||
|
|
|
||
|
|
//Now last item is a Soft limit
|
||
|
|
statItem.Soft, err = limitToInt(str[len(str)-1])
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
// Remove last item from string
|
||
|
|
str = str[:len(str)-1]
|
||
|
|
|
||
|
|
//The rest is a stats name
|
||
|
|
resourceName := strings.Join(str, " ")
|
||
|
|
switch resourceName {
|
||
|
|
case "Max cpu time":
|
||
|
|
statItem.Resource = RLIMIT_CPU
|
||
|
|
case "Max file size":
|
||
|
|
statItem.Resource = RLIMIT_FSIZE
|
||
|
|
case "Max data size":
|
||
|
|
statItem.Resource = RLIMIT_DATA
|
||
|
|
case "Max stack size":
|
||
|
|
statItem.Resource = RLIMIT_STACK
|
||
|
|
case "Max core file size":
|
||
|
|
statItem.Resource = RLIMIT_CORE
|
||
|
|
case "Max resident set":
|
||
|
|
statItem.Resource = RLIMIT_RSS
|
||
|
|
case "Max processes":
|
||
|
|
statItem.Resource = RLIMIT_NPROC
|
||
|
|
case "Max open files":
|
||
|
|
statItem.Resource = RLIMIT_NOFILE
|
||
|
|
case "Max locked memory":
|
||
|
|
statItem.Resource = RLIMIT_MEMLOCK
|
||
|
|
case "Max address space":
|
||
|
|
statItem.Resource = RLIMIT_AS
|
||
|
|
case "Max file locks":
|
||
|
|
statItem.Resource = RLIMIT_LOCKS
|
||
|
|
case "Max pending signals":
|
||
|
|
statItem.Resource = RLIMIT_SIGPENDING
|
||
|
|
case "Max msgqueue size":
|
||
|
|
statItem.Resource = RLIMIT_MSGQUEUE
|
||
|
|
case "Max nice priority":
|
||
|
|
statItem.Resource = RLIMIT_NICE
|
||
|
|
case "Max realtime priority":
|
||
|
|
statItem.Resource = RLIMIT_RTPRIO
|
||
|
|
case "Max realtime timeout":
|
||
|
|
statItem.Resource = RLIMIT_RTTIME
|
||
|
|
default:
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
|
||
|
|
limitStats = append(limitStats, statItem)
|
||
|
|
}
|
||
|
|
|
||
|
|
if err := limitsScanner.Err(); err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
return limitStats, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get num_fds from /proc/(pid)/fd
|
||
|
|
func (p *Process) fillFromfd() (int32, []*OpenFilesStat, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
statPath := common.HostProc(strconv.Itoa(int(pid)), "fd")
|
||
|
|
d, err := os.Open(statPath)
|
||
|
|
if err != nil {
|
||
|
|
return 0, nil, err
|
||
|
|
}
|
||
|
|
defer d.Close()
|
||
|
|
fnames, err := d.Readdirnames(-1)
|
||
|
|
numFDs := int32(len(fnames))
|
||
|
|
|
||
|
|
var openfiles []*OpenFilesStat
|
||
|
|
for _, fd := range fnames {
|
||
|
|
fpath := filepath.Join(statPath, fd)
|
||
|
|
filepath, err := os.Readlink(fpath)
|
||
|
|
if err != nil {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
t, err := strconv.ParseUint(fd, 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return numFDs, openfiles, err
|
||
|
|
}
|
||
|
|
o := &OpenFilesStat{
|
||
|
|
Path: filepath,
|
||
|
|
Fd: t,
|
||
|
|
}
|
||
|
|
openfiles = append(openfiles, o)
|
||
|
|
}
|
||
|
|
|
||
|
|
return numFDs, openfiles, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get cwd from /proc/(pid)/cwd
|
||
|
|
func (p *Process) fillFromCwd() (string, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
cwdPath := common.HostProc(strconv.Itoa(int(pid)), "cwd")
|
||
|
|
cwd, err := os.Readlink(cwdPath)
|
||
|
|
if err != nil {
|
||
|
|
return "", err
|
||
|
|
}
|
||
|
|
return string(cwd), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get exe from /proc/(pid)/exe
|
||
|
|
func (p *Process) fillFromExe() (string, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
exePath := common.HostProc(strconv.Itoa(int(pid)), "exe")
|
||
|
|
exe, err := os.Readlink(exePath)
|
||
|
|
if err != nil {
|
||
|
|
return "", err
|
||
|
|
}
|
||
|
|
return string(exe), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get cmdline from /proc/(pid)/cmdline
|
||
|
|
func (p *Process) fillFromCmdline() (string, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
cmdPath := common.HostProc(strconv.Itoa(int(pid)), "cmdline")
|
||
|
|
cmdline, err := ioutil.ReadFile(cmdPath)
|
||
|
|
if err != nil {
|
||
|
|
return "", err
|
||
|
|
}
|
||
|
|
ret := strings.FieldsFunc(string(cmdline), func(r rune) bool {
|
||
|
|
if r == '\u0000' {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
return false
|
||
|
|
})
|
||
|
|
|
||
|
|
return strings.Join(ret, " "), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p *Process) fillSliceFromCmdline() ([]string, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
cmdPath := common.HostProc(strconv.Itoa(int(pid)), "cmdline")
|
||
|
|
cmdline, err := ioutil.ReadFile(cmdPath)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
if len(cmdline) == 0 {
|
||
|
|
return nil, nil
|
||
|
|
}
|
||
|
|
if cmdline[len(cmdline)-1] == 0 {
|
||
|
|
cmdline = cmdline[:len(cmdline)-1]
|
||
|
|
}
|
||
|
|
parts := bytes.Split(cmdline, []byte{0})
|
||
|
|
var strParts []string
|
||
|
|
for _, p := range parts {
|
||
|
|
strParts = append(strParts, string(p))
|
||
|
|
}
|
||
|
|
|
||
|
|
return strParts, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get IO status from /proc/(pid)/io
|
||
|
|
func (p *Process) fillFromIO() (*IOCountersStat, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
ioPath := common.HostProc(strconv.Itoa(int(pid)), "io")
|
||
|
|
ioline, err := ioutil.ReadFile(ioPath)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
lines := strings.Split(string(ioline), "\n")
|
||
|
|
ret := &IOCountersStat{}
|
||
|
|
|
||
|
|
for _, line := range lines {
|
||
|
|
field := strings.Fields(line)
|
||
|
|
if len(field) < 2 {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
t, err := strconv.ParseUint(field[1], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
param := field[0]
|
||
|
|
if strings.HasSuffix(param, ":") {
|
||
|
|
param = param[:len(param)-1]
|
||
|
|
}
|
||
|
|
switch param {
|
||
|
|
case "syscr":
|
||
|
|
ret.ReadCount = t
|
||
|
|
case "syscw":
|
||
|
|
ret.WriteCount = t
|
||
|
|
case "read_bytes":
|
||
|
|
ret.ReadBytes = t
|
||
|
|
case "write_bytes":
|
||
|
|
ret.WriteBytes = t
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get memory info from /proc/(pid)/statm
|
||
|
|
func (p *Process) fillFromStatm() (*MemoryInfoStat, *MemoryInfoExStat, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
memPath := common.HostProc(strconv.Itoa(int(pid)), "statm")
|
||
|
|
contents, err := ioutil.ReadFile(memPath)
|
||
|
|
if err != nil {
|
||
|
|
return nil, nil, err
|
||
|
|
}
|
||
|
|
fields := strings.Split(string(contents), " ")
|
||
|
|
|
||
|
|
vms, err := strconv.ParseUint(fields[0], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return nil, nil, err
|
||
|
|
}
|
||
|
|
rss, err := strconv.ParseUint(fields[1], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return nil, nil, err
|
||
|
|
}
|
||
|
|
memInfo := &MemoryInfoStat{
|
||
|
|
RSS: rss * PageSize,
|
||
|
|
VMS: vms * PageSize,
|
||
|
|
}
|
||
|
|
|
||
|
|
shared, err := strconv.ParseUint(fields[2], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return nil, nil, err
|
||
|
|
}
|
||
|
|
text, err := strconv.ParseUint(fields[3], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return nil, nil, err
|
||
|
|
}
|
||
|
|
lib, err := strconv.ParseUint(fields[4], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return nil, nil, err
|
||
|
|
}
|
||
|
|
dirty, err := strconv.ParseUint(fields[5], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return nil, nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
memInfoEx := &MemoryInfoExStat{
|
||
|
|
RSS: rss * PageSize,
|
||
|
|
VMS: vms * PageSize,
|
||
|
|
Shared: shared * PageSize,
|
||
|
|
Text: text * PageSize,
|
||
|
|
Lib: lib * PageSize,
|
||
|
|
Dirty: dirty * PageSize,
|
||
|
|
}
|
||
|
|
|
||
|
|
return memInfo, memInfoEx, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get various status from /proc/(pid)/status
|
||
|
|
func (p *Process) fillFromStatus() error {
|
||
|
|
pid := p.Pid
|
||
|
|
statPath := common.HostProc(strconv.Itoa(int(pid)), "status")
|
||
|
|
contents, err := ioutil.ReadFile(statPath)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
lines := strings.Split(string(contents), "\n")
|
||
|
|
p.numCtxSwitches = &NumCtxSwitchesStat{}
|
||
|
|
p.memInfo = &MemoryInfoStat{}
|
||
|
|
for _, line := range lines {
|
||
|
|
tabParts := strings.SplitN(line, "\t", 2)
|
||
|
|
if len(tabParts) < 2 {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
value := tabParts[1]
|
||
|
|
switch strings.TrimRight(tabParts[0], ":") {
|
||
|
|
case "Name":
|
||
|
|
p.name = strings.Trim(value, " \t")
|
||
|
|
if len(p.name) >= 15 {
|
||
|
|
cmdlineSlice, err := p.CmdlineSlice()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
if len(cmdlineSlice) > 0 {
|
||
|
|
extendedName := filepath.Base(cmdlineSlice[0])
|
||
|
|
if strings.HasPrefix(extendedName, p.name) {
|
||
|
|
p.name = extendedName
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
case "State":
|
||
|
|
p.status = value[0:1]
|
||
|
|
case "PPid", "Ppid":
|
||
|
|
pval, err := strconv.ParseInt(value, 10, 32)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.parent = int32(pval)
|
||
|
|
case "Uid":
|
||
|
|
p.uids = make([]int32, 0, 4)
|
||
|
|
for _, i := range strings.Split(value, "\t") {
|
||
|
|
v, err := strconv.ParseInt(i, 10, 32)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.uids = append(p.uids, int32(v))
|
||
|
|
}
|
||
|
|
case "Gid":
|
||
|
|
p.gids = make([]int32, 0, 4)
|
||
|
|
for _, i := range strings.Split(value, "\t") {
|
||
|
|
v, err := strconv.ParseInt(i, 10, 32)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.gids = append(p.gids, int32(v))
|
||
|
|
}
|
||
|
|
case "Threads":
|
||
|
|
v, err := strconv.ParseInt(value, 10, 32)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.numThreads = int32(v)
|
||
|
|
case "voluntary_ctxt_switches":
|
||
|
|
v, err := strconv.ParseInt(value, 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.numCtxSwitches.Voluntary = v
|
||
|
|
case "nonvoluntary_ctxt_switches":
|
||
|
|
v, err := strconv.ParseInt(value, 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.numCtxSwitches.Involuntary = v
|
||
|
|
case "VmRSS":
|
||
|
|
value := strings.Trim(value, " kB") // remove last "kB"
|
||
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.memInfo.RSS = v * 1024
|
||
|
|
case "VmSize":
|
||
|
|
value := strings.Trim(value, " kB") // remove last "kB"
|
||
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.memInfo.VMS = v * 1024
|
||
|
|
case "VmSwap":
|
||
|
|
value := strings.Trim(value, " kB") // remove last "kB"
|
||
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
p.memInfo.Swap = v * 1024
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p *Process) fillFromStat() (string, int32, *cpu.TimesStat, int64, int32, error) {
|
||
|
|
pid := p.Pid
|
||
|
|
statPath := common.HostProc(strconv.Itoa(int(pid)), "stat")
|
||
|
|
contents, err := ioutil.ReadFile(statPath)
|
||
|
|
if err != nil {
|
||
|
|
return "", 0, nil, 0, 0, err
|
||
|
|
}
|
||
|
|
fields := strings.Fields(string(contents))
|
||
|
|
|
||
|
|
i := 1
|
||
|
|
for !strings.HasSuffix(fields[i], ")") {
|
||
|
|
i++
|
||
|
|
}
|
||
|
|
|
||
|
|
termmap, err := getTerminalMap()
|
||
|
|
terminal := ""
|
||
|
|
if err == nil {
|
||
|
|
t, err := strconv.ParseUint(fields[i+5], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return "", 0, nil, 0, 0, err
|
||
|
|
}
|
||
|
|
terminal = termmap[t]
|
||
|
|
}
|
||
|
|
|
||
|
|
ppid, err := strconv.ParseInt(fields[i+2], 10, 32)
|
||
|
|
if err != nil {
|
||
|
|
return "", 0, nil, 0, 0, err
|
||
|
|
}
|
||
|
|
utime, err := strconv.ParseFloat(fields[i+12], 64)
|
||
|
|
if err != nil {
|
||
|
|
return "", 0, nil, 0, 0, err
|
||
|
|
}
|
||
|
|
|
||
|
|
stime, err := strconv.ParseFloat(fields[i+13], 64)
|
||
|
|
if err != nil {
|
||
|
|
return "", 0, nil, 0, 0, err
|
||
|
|
}
|
||
|
|
|
||
|
|
cpuTimes := &cpu.TimesStat{
|
||
|
|
CPU: "cpu",
|
||
|
|
User: float64(utime / ClockTicks),
|
||
|
|
System: float64(stime / ClockTicks),
|
||
|
|
}
|
||
|
|
|
||
|
|
bootTime, _ := host.BootTime()
|
||
|
|
t, err := strconv.ParseUint(fields[i+20], 10, 64)
|
||
|
|
if err != nil {
|
||
|
|
return "", 0, nil, 0, 0, err
|
||
|
|
}
|
||
|
|
ctime := (t / uint64(ClockTicks)) + uint64(bootTime)
|
||
|
|
createTime := int64(ctime * 1000)
|
||
|
|
|
||
|
|
// p.Nice = mustParseInt32(fields[18])
|
||
|
|
// use syscall instead of parse Stat file
|
||
|
|
snice, _ := syscall.Getpriority(PrioProcess, int(pid))
|
||
|
|
nice := int32(snice) // FIXME: is this true?
|
||
|
|
|
||
|
|
return terminal, int32(ppid), cpuTimes, createTime, nice, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Pids returns a slice of process ID list which are running now.
|
||
|
|
func Pids() ([]int32, error) {
|
||
|
|
var ret []int32
|
||
|
|
|
||
|
|
d, err := os.Open(common.HostProc())
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
defer d.Close()
|
||
|
|
|
||
|
|
fnames, err := d.Readdirnames(-1)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
for _, fname := range fnames {
|
||
|
|
pid, err := strconv.ParseInt(fname, 10, 32)
|
||
|
|
if err != nil {
|
||
|
|
// if not numeric name, just skip
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
ret = append(ret, int32(pid))
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret, nil
|
||
|
|
}
|