1117 lines
27 KiB
Go
1117 lines
27 KiB
Go
// +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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"context"
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"encoding/json"
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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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"github.com/shirou/gopsutil/v3/cpu"
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"github.com/shirou/gopsutil/v3/internal/common"
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"github.com/shirou/gopsutil/v3/net"
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"golang.org/x/sys/unix"
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)
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var pageSize = uint64(os.Getpagesize())
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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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func (p *Process) PpidWithContext(ctx context.Context) (int32, error) {
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_, ppid, _, _, _, _, _, err := p.fillFromStatWithContext(ctx)
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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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func (p *Process) NameWithContext(ctx context.Context) (string, error) {
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if p.name == "" {
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if err := p.fillFromStatusWithContext(ctx); 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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func (p *Process) TgidWithContext(ctx context.Context) (int32, error) {
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if p.tgid == 0 {
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if err := p.fillFromStatusWithContext(ctx); err != nil {
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return 0, err
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}
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}
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return p.tgid, nil
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}
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func (p *Process) ExeWithContext(ctx context.Context) (string, error) {
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return p.fillFromExeWithContext(ctx)
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}
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func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
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return p.fillFromCmdlineWithContext(ctx)
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}
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func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error) {
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return p.fillSliceFromCmdlineWithContext(ctx)
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}
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func (p *Process) createTimeWithContext(ctx context.Context) (int64, error) {
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_, _, _, createTime, _, _, _, err := p.fillFromStatWithContext(ctx)
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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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func (p *Process) CwdWithContext(ctx context.Context) (string, error) {
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return p.fillFromCwdWithContext(ctx)
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}
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func (p *Process) ParentWithContext(ctx context.Context) (*Process, error) {
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err := p.fillFromStatusWithContext(ctx)
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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 NewProcessWithContext(ctx, p.parent)
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}
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func (p *Process) StatusWithContext(ctx context.Context) ([]string, error) {
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err := p.fillFromStatusWithContext(ctx)
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if err != nil {
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return []string{""}, err
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}
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return []string{p.status}, nil
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}
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func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
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// see https://github.com/shirou/gopsutil/issues/596#issuecomment-432707831 for implementation details
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pid := p.Pid
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statPath := common.HostProc(strconv.Itoa(int(pid)), "stat")
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contents, err := ioutil.ReadFile(statPath)
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if err != nil {
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return false, err
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}
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fields := strings.Fields(string(contents))
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if len(fields) < 8 {
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return false, fmt.Errorf("insufficient data in %s", statPath)
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}
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pgid := fields[4]
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tpgid := fields[7]
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return pgid == tpgid, nil
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}
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func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
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err := p.fillFromStatusWithContext(ctx)
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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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func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
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err := p.fillFromStatusWithContext(ctx)
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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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func (p *Process) GroupsWithContext(ctx context.Context) ([]int32, error) {
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err := p.fillFromStatusWithContext(ctx)
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if err != nil {
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return []int32{}, err
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}
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return p.groups, nil
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}
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func (p *Process) TerminalWithContext(ctx context.Context) (string, error) {
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t, _, _, _, _, _, _, err := p.fillFromStatWithContext(ctx)
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if err != nil {
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return "", err
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}
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termmap, err := getTerminalMap()
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if err != nil {
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return "", err
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}
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terminal := termmap[t]
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return terminal, nil
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}
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func (p *Process) NiceWithContext(ctx context.Context) (int32, error) {
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_, _, _, _, _, nice, _, err := p.fillFromStatWithContext(ctx)
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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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func (p *Process) IOniceWithContext(ctx context.Context) (int32, error) {
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return 0, common.ErrNotImplementedError
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}
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func (p *Process) RlimitWithContext(ctx context.Context) ([]RlimitStat, error) {
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return p.RlimitUsageWithContext(ctx, false)
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}
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func (p *Process) RlimitUsageWithContext(ctx context.Context, gatherUsed bool) ([]RlimitStat, error) {
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rlimits, err := p.fillFromLimitsWithContext(ctx)
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if !gatherUsed || err != nil {
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return rlimits, err
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}
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_, _, _, _, rtprio, nice, _, err := p.fillFromStatWithContext(ctx)
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if err != nil {
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return nil, err
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}
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if err := p.fillFromStatusWithContext(ctx); err != nil {
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return nil, err
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}
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for i := range rlimits {
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rs := &rlimits[i]
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switch rs.Resource {
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case RLIMIT_CPU:
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times, err := p.TimesWithContext(ctx)
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if err != nil {
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return nil, err
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}
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rs.Used = uint64(times.User + times.System)
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case RLIMIT_DATA:
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rs.Used = uint64(p.memInfo.Data)
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case RLIMIT_STACK:
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rs.Used = uint64(p.memInfo.Stack)
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case RLIMIT_RSS:
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rs.Used = uint64(p.memInfo.RSS)
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case RLIMIT_NOFILE:
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n, err := p.NumFDsWithContext(ctx)
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if err != nil {
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return nil, err
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}
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rs.Used = uint64(n)
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case RLIMIT_MEMLOCK:
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rs.Used = uint64(p.memInfo.Locked)
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case RLIMIT_AS:
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rs.Used = uint64(p.memInfo.VMS)
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case RLIMIT_LOCKS:
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//TODO we can get the used value from /proc/$pid/locks. But linux doesn't enforce it, so not a high priority.
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case RLIMIT_SIGPENDING:
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rs.Used = p.sigInfo.PendingProcess
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case RLIMIT_NICE:
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// The rlimit for nice is a little unusual, in that 0 means the niceness cannot be decreased beyond the current value, but it can be increased.
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// So effectively: if rs.Soft == 0 { rs.Soft = rs.Used }
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rs.Used = uint64(nice)
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case RLIMIT_RTPRIO:
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rs.Used = uint64(rtprio)
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}
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}
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return rlimits, err
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}
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func (p *Process) IOCountersWithContext(ctx context.Context) (*IOCountersStat, error) {
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return p.fillFromIOWithContext(ctx)
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}
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func (p *Process) NumCtxSwitchesWithContext(ctx context.Context) (*NumCtxSwitchesStat, error) {
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err := p.fillFromStatusWithContext(ctx)
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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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func (p *Process) NumFDsWithContext(ctx context.Context) (int32, error) {
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_, fnames, err := p.fillFromfdListWithContext(ctx)
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return int32(len(fnames)), err
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}
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func (p *Process) NumThreadsWithContext(ctx context.Context) (int32, error) {
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err := p.fillFromStatusWithContext(ctx)
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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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func (p *Process) ThreadsWithContext(ctx context.Context) (map[int32]*cpu.TimesStat, error) {
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ret := make(map[int32]*cpu.TimesStat)
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taskPath := common.HostProc(strconv.Itoa(int(p.Pid)), "task")
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tids, err := readPidsFromDir(taskPath)
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if err != nil {
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return nil, err
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}
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for _, tid := range tids {
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_, _, cpuTimes, _, _, _, _, err := p.fillFromTIDStatWithContext(ctx, tid)
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if err != nil {
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return nil, err
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}
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ret[tid] = cpuTimes
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}
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return ret, nil
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}
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func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error) {
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_, _, cpuTimes, _, _, _, _, err := p.fillFromStatWithContext(ctx)
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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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func (p *Process) CPUAffinityWithContext(ctx context.Context) ([]int32, error) {
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return nil, common.ErrNotImplementedError
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}
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func (p *Process) MemoryInfoWithContext(ctx context.Context) (*MemoryInfoStat, error) {
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meminfo, _, err := p.fillFromStatmWithContext(ctx)
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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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func (p *Process) MemoryInfoExWithContext(ctx context.Context) (*MemoryInfoExStat, error) {
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_, memInfoEx, err := p.fillFromStatmWithContext(ctx)
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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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func (p *Process) PageFaultsWithContext(ctx context.Context) (*PageFaultsStat, error) {
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_, _, _, _, _, _, pageFaults, err := p.fillFromStatWithContext(ctx)
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if err != nil {
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return nil, err
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}
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return pageFaults, nil
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}
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func (p *Process) ChildrenWithContext(ctx context.Context) ([]*Process, error) {
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pids, err := common.CallPgrepWithContext(ctx, 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 := NewProcessWithContext(ctx, 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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func (p *Process) OpenFilesWithContext(ctx context.Context) ([]OpenFilesStat, error) {
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_, ofs, err := p.fillFromfdWithContext(ctx)
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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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func (p *Process) ConnectionsWithContext(ctx context.Context) ([]net.ConnectionStat, error) {
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return net.ConnectionsPidWithContext(ctx, "all", p.Pid)
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}
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func (p *Process) ConnectionsMaxWithContext(ctx context.Context, max int) ([]net.ConnectionStat, error) {
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return net.ConnectionsPidMaxWithContext(ctx, "all", p.Pid, max)
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}
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func (p *Process) MemoryMapsWithContext(ctx context.Context, grouped bool) (*[]MemoryMapsStat, error) {
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pid := p.Pid
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var ret []MemoryMapsStat
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if grouped {
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ret = make([]MemoryMapsStat, 1)
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}
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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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v = strings.TrimSpace(v)
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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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|
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blocks := make([]string, 16)
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for _, line := range lines {
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fields := strings.Fields(line)
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if len(fields) > 0 && !strings.HasSuffix(fields[0], ":") {
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// new block section
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if len(blocks) > 0 {
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g, err := getBlock(fields, blocks)
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if err != nil {
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return &ret, err
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}
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if grouped {
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ret[0].Size += g.Size
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ret[0].Rss += g.Rss
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ret[0].Pss += g.Pss
|
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ret[0].SharedClean += g.SharedClean
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ret[0].SharedDirty += g.SharedDirty
|
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ret[0].PrivateClean += g.PrivateClean
|
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ret[0].PrivateDirty += g.PrivateDirty
|
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ret[0].Referenced += g.Referenced
|
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ret[0].Anonymous += g.Anonymous
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ret[0].Swap += g.Swap
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} else {
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ret = append(ret, g)
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}
|
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}
|
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// starts new block
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blocks = make([]string, 16)
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} else {
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blocks = append(blocks, line)
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}
|
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}
|
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|
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return &ret, nil
|
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}
|
|
|
|
/**
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** Internal functions
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|
**/
|
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|
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func limitToUint(val string) (uint64, error) {
|
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if val == "unlimited" {
|
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return math.MaxUint64, nil
|
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} else {
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res, err := strconv.ParseInt(val, 10, 32)
|
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if err != nil {
|
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return 0, err
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}
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return uint64(res), nil
|
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}
|
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}
|
|
|
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// Get num_fds from /proc/(pid)/limits
|
|
func (p *Process) fillFromLimitsWithContext(ctx context.Context) ([]RlimitStat, error) {
|
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pid := p.Pid
|
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limitsFile := common.HostProc(strconv.Itoa(int(pid)), "limits")
|
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d, err := os.Open(limitsFile)
|
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if err != nil {
|
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return nil, err
|
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}
|
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defer d.Close()
|
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|
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var limitStats []RlimitStat
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|
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limitsScanner := bufio.NewScanner(d)
|
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for limitsScanner.Scan() {
|
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var statItem RlimitStat
|
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|
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str := strings.Fields(limitsScanner.Text())
|
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|
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// Remove the header line
|
|
if strings.Contains(str[len(str)-1], "Units") {
|
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continue
|
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}
|
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|
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// Assert that last item is a Hard limit
|
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statItem.Hard, err = limitToUint(str[len(str)-1])
|
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if err != nil {
|
|
// On error remove last item an try once again since it can be unit or header line
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str = str[:len(str)-1]
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statItem.Hard, err = limitToUint(str[len(str)-1])
|
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if err != nil {
|
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return nil, err
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}
|
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}
|
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// Remove last item from string
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str = str[:len(str)-1]
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|
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//Now last item is a Soft limit
|
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statItem.Soft, err = limitToUint(str[len(str)-1])
|
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if err != nil {
|
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return nil, err
|
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}
|
|
// Remove last item from string
|
|
str = str[:len(str)-1]
|
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|
|
//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 list of /proc/(pid)/fd files
|
|
func (p *Process) fillFromfdListWithContext(ctx context.Context) (string, []string, error) {
|
|
pid := p.Pid
|
|
statPath := common.HostProc(strconv.Itoa(int(pid)), "fd")
|
|
d, err := os.Open(statPath)
|
|
if err != nil {
|
|
return statPath, []string{}, err
|
|
}
|
|
defer d.Close()
|
|
fnames, err := d.Readdirnames(-1)
|
|
return statPath, fnames, err
|
|
}
|
|
|
|
// Get num_fds from /proc/(pid)/fd
|
|
func (p *Process) fillFromfdWithContext(ctx context.Context) (int32, []*OpenFilesStat, error) {
|
|
statPath, fnames, err := p.fillFromfdListWithContext(ctx)
|
|
if err != nil {
|
|
return 0, nil, err
|
|
}
|
|
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) fillFromCwdWithContext(ctx context.Context) (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) fillFromExeWithContext(ctx context.Context) (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) fillFromCmdlineWithContext(ctx context.Context) (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) fillSliceFromCmdlineWithContext(ctx context.Context) ([]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) fillFromIOWithContext(ctx context.Context) (*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) fillFromStatmWithContext(ctx context.Context) (*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) fillFromStatusWithContext(ctx context.Context) 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{}
|
|
p.sigInfo = &SignalInfoStat{}
|
|
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
|
|
} else {
|
|
p.name = cmdlineSlice[0]
|
|
}
|
|
}
|
|
}
|
|
case "State":
|
|
p.status = convertStatusChar(value[0:1])
|
|
case "PPid", "Ppid":
|
|
pval, err := strconv.ParseInt(value, 10, 32)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.parent = int32(pval)
|
|
case "Tgid":
|
|
pval, err := strconv.ParseInt(value, 10, 32)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.tgid = 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 "Groups":
|
|
groups := strings.Fields(value)
|
|
p.groups = make([]int32, 0, len(groups))
|
|
for _, i := range groups {
|
|
v, err := strconv.ParseInt(i, 10, 32)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.groups = append(p.groups, 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
|
|
case "VmHWM":
|
|
value := strings.Trim(value, " kB") // remove last "kB"
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.memInfo.HWM = v * 1024
|
|
case "VmData":
|
|
value := strings.Trim(value, " kB") // remove last "kB"
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.memInfo.Data = v * 1024
|
|
case "VmStk":
|
|
value := strings.Trim(value, " kB") // remove last "kB"
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.memInfo.Stack = v * 1024
|
|
case "VmLck":
|
|
value := strings.Trim(value, " kB") // remove last "kB"
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.memInfo.Locked = v * 1024
|
|
case "SigPnd":
|
|
v, err := strconv.ParseUint(value, 16, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.sigInfo.PendingThread = v
|
|
case "ShdPnd":
|
|
v, err := strconv.ParseUint(value, 16, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.sigInfo.PendingProcess = v
|
|
case "SigBlk":
|
|
v, err := strconv.ParseUint(value, 16, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.sigInfo.Blocked = v
|
|
case "SigIgn":
|
|
v, err := strconv.ParseUint(value, 16, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.sigInfo.Ignored = v
|
|
case "SigCgt":
|
|
v, err := strconv.ParseUint(value, 16, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.sigInfo.Caught = v
|
|
}
|
|
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (p *Process) fillFromTIDStatWithContext(ctx context.Context, tid int32) (uint64, int32, *cpu.TimesStat, int64, uint32, int32, *PageFaultsStat, error) {
|
|
pid := p.Pid
|
|
var statPath string
|
|
|
|
if tid == -1 {
|
|
statPath = common.HostProc(strconv.Itoa(int(pid)), "stat")
|
|
} else {
|
|
statPath = common.HostProc(strconv.Itoa(int(pid)), "task", strconv.Itoa(int(tid)), "stat")
|
|
}
|
|
|
|
contents, err := ioutil.ReadFile(statPath)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
fields := strings.Fields(string(contents))
|
|
|
|
i := 1
|
|
for !strings.HasSuffix(fields[i], ")") {
|
|
i++
|
|
}
|
|
|
|
terminal, err := strconv.ParseUint(fields[i+5], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
|
|
ppid, err := strconv.ParseInt(fields[i+2], 10, 32)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
utime, err := strconv.ParseFloat(fields[i+12], 64)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
|
|
stime, err := strconv.ParseFloat(fields[i+13], 64)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
|
|
// There is no such thing as iotime in stat file. As an approximation, we
|
|
// will use delayacct_blkio_ticks (aggregated block I/O delays, as per Linux
|
|
// docs). Note: I am assuming at least Linux 2.6.18
|
|
iotime, err := strconv.ParseFloat(fields[i+40], 64)
|
|
if err != nil {
|
|
iotime = 0 // Ancient linux version, most likely
|
|
}
|
|
|
|
cpuTimes := &cpu.TimesStat{
|
|
CPU: "cpu",
|
|
User: float64(utime / clockTicks),
|
|
System: float64(stime / clockTicks),
|
|
Iowait: float64(iotime / clockTicks),
|
|
}
|
|
|
|
bootTime, _ := common.BootTimeWithContext(ctx)
|
|
t, err := strconv.ParseUint(fields[i+20], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
ctime := (t / uint64(clockTicks)) + uint64(bootTime)
|
|
createTime := int64(ctime * 1000)
|
|
|
|
rtpriority, err := strconv.ParseInt(fields[i+16], 10, 32)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
if rtpriority < 0 {
|
|
rtpriority = rtpriority*-1 - 1
|
|
} else {
|
|
rtpriority = 0
|
|
}
|
|
|
|
// p.Nice = mustParseInt32(fields[18])
|
|
// use syscall instead of parse Stat file
|
|
snice, _ := unix.Getpriority(prioProcess, int(pid))
|
|
nice := int32(snice) // FIXME: is this true?
|
|
|
|
minFault, err := strconv.ParseUint(fields[i+8], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
cMinFault, err := strconv.ParseUint(fields[i+9], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
majFault, err := strconv.ParseUint(fields[i+10], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
cMajFault, err := strconv.ParseUint(fields[i+11], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, nil, 0, 0, 0, nil, err
|
|
}
|
|
|
|
faults := &PageFaultsStat{
|
|
MinorFaults: minFault,
|
|
MajorFaults: majFault,
|
|
ChildMinorFaults: cMinFault,
|
|
ChildMajorFaults: cMajFault,
|
|
}
|
|
|
|
return terminal, int32(ppid), cpuTimes, createTime, uint32(rtpriority), nice, faults, nil
|
|
}
|
|
|
|
func (p *Process) fillFromStatWithContext(ctx context.Context) (uint64, int32, *cpu.TimesStat, int64, uint32, int32, *PageFaultsStat, error) {
|
|
return p.fillFromTIDStatWithContext(ctx, -1)
|
|
}
|
|
|
|
func pidsWithContext(ctx context.Context) ([]int32, error) {
|
|
return readPidsFromDir(common.HostProc())
|
|
}
|
|
|
|
func ProcessesWithContext(ctx context.Context) ([]*Process, error) {
|
|
out := []*Process{}
|
|
|
|
pids, err := PidsWithContext(ctx)
|
|
if err != nil {
|
|
return out, err
|
|
}
|
|
|
|
for _, pid := range pids {
|
|
p, err := NewProcessWithContext(ctx, pid)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
out = append(out, p)
|
|
}
|
|
|
|
return out, nil
|
|
}
|
|
|
|
func readPidsFromDir(path string) ([]int32, error) {
|
|
var ret []int32
|
|
|
|
d, err := os.Open(path)
|
|
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
|
|
}
|