mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-03-10 05:09:03 +00:00
388d8ccd9f
* simv2: wip * simulation: exec adapter start/stop * simulation: add node status to exec adapter * simulation: initial simulation code * simulation: exec adapter, configure path to executable * simulation: initial docker adapter * simulation: wip kubernetes adapter * simulation: kubernetes adapter proxy * simulation: implement GetAll/StartAll/StopAll * simulation: kuberentes adapter - set env vars and resource limits * simulation: discovery test * simulation: remove port definitions within docker adapter * simulation: simplify wait for healthy loop * simulation: get nat ip addr from interface * simulation: pull docker images automatically * simulation: NodeStatus -> NodeInfo * simulation: move discovery test to example dir * simulation: example snapshot usage * simulation: add goclient specific simulation * simulation: add peer connections to snapshot * simulation: close rpc client * simulation: don't export kubernetes proxy server * simulation: merge simulation code * simulation: don't export nodemap * simulation: rename SimulationSnapshot -> Snapshot * simulation: linting fixes * simulation: add k8s available helper func * simulation: vendor * simulation: fix 'no non-test Go files' when building * simulation: remove errors from interface methods where non were returned * simulation: run getHealthInfo check in parallel
113 lines
2.8 KiB
Go
113 lines
2.8 KiB
Go
package system
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// State is the status of a process.
|
|
type State rune
|
|
|
|
const ( // Only values for Linux 3.14 and later are listed here
|
|
Dead State = 'X'
|
|
DiskSleep State = 'D'
|
|
Running State = 'R'
|
|
Sleeping State = 'S'
|
|
Stopped State = 'T'
|
|
TracingStop State = 't'
|
|
Zombie State = 'Z'
|
|
)
|
|
|
|
// String forms of the state from proc(5)'s documentation for
|
|
// /proc/[pid]/status' "State" field.
|
|
func (s State) String() string {
|
|
switch s {
|
|
case Dead:
|
|
return "dead"
|
|
case DiskSleep:
|
|
return "disk sleep"
|
|
case Running:
|
|
return "running"
|
|
case Sleeping:
|
|
return "sleeping"
|
|
case Stopped:
|
|
return "stopped"
|
|
case TracingStop:
|
|
return "tracing stop"
|
|
case Zombie:
|
|
return "zombie"
|
|
default:
|
|
return fmt.Sprintf("unknown (%c)", s)
|
|
}
|
|
}
|
|
|
|
// Stat_t represents the information from /proc/[pid]/stat, as
|
|
// described in proc(5) with names based on the /proc/[pid]/status
|
|
// fields.
|
|
type Stat_t struct {
|
|
// PID is the process ID.
|
|
PID uint
|
|
|
|
// Name is the command run by the process.
|
|
Name string
|
|
|
|
// State is the state of the process.
|
|
State State
|
|
|
|
// StartTime is the number of clock ticks after system boot (since
|
|
// Linux 2.6).
|
|
StartTime uint64
|
|
}
|
|
|
|
// Stat returns a Stat_t instance for the specified process.
|
|
func Stat(pid int) (stat Stat_t, err error) {
|
|
bytes, err := ioutil.ReadFile(filepath.Join("/proc", strconv.Itoa(pid), "stat"))
|
|
if err != nil {
|
|
return stat, err
|
|
}
|
|
return parseStat(string(bytes))
|
|
}
|
|
|
|
// GetProcessStartTime is deprecated. Use Stat(pid) and
|
|
// Stat_t.StartTime instead.
|
|
func GetProcessStartTime(pid int) (string, error) {
|
|
stat, err := Stat(pid)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return fmt.Sprintf("%d", stat.StartTime), nil
|
|
}
|
|
|
|
func parseStat(data string) (stat Stat_t, err error) {
|
|
// From proc(5), field 2 could contain space and is inside `(` and `)`.
|
|
// The following is an example:
|
|
// 89653 (gunicorn: maste) S 89630 89653 89653 0 -1 4194560 29689 28896 0 3 146 32 76 19 20 0 1 0 2971844 52965376 3920 18446744073709551615 1 1 0 0 0 0 0 16781312 137447943 0 0 0 17 1 0 0 0 0 0 0 0 0 0 0 0 0 0
|
|
i := strings.LastIndex(data, ")")
|
|
if i <= 2 || i >= len(data)-1 {
|
|
return stat, fmt.Errorf("invalid stat data: %q", data)
|
|
}
|
|
|
|
parts := strings.SplitN(data[:i], "(", 2)
|
|
if len(parts) != 2 {
|
|
return stat, fmt.Errorf("invalid stat data: %q", data)
|
|
}
|
|
|
|
stat.Name = parts[1]
|
|
_, err = fmt.Sscanf(parts[0], "%d", &stat.PID)
|
|
if err != nil {
|
|
return stat, err
|
|
}
|
|
|
|
// parts indexes should be offset by 3 from the field number given
|
|
// proc(5), because parts is zero-indexed and we've removed fields
|
|
// one (PID) and two (Name) in the paren-split.
|
|
parts = strings.Split(data[i+2:], " ")
|
|
var state int
|
|
fmt.Sscanf(parts[3-3], "%c", &state)
|
|
stat.State = State(state)
|
|
fmt.Sscanf(parts[22-3], "%d", &stat.StartTime)
|
|
return stat, nil
|
|
}
|