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Merge pull request #144 from weberr13/noChildrenError

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There are two possible error scenarios for CallPgrep.
This commit is contained in:
shirou 2016-02-09 10:57:08 +09:00
commit e77438504d
1 changed files with 6 additions and 0 deletions
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6
process/process_linux.go
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@ -4,6 +4,7 @@ package process
import ( import (
"encoding/json" "encoding/json"
"errors"
"fmt" "fmt"
"io/ioutil" "io/ioutil"
"os" "os"
@ -18,6 +19,8 @@ import (
"github.com/shirou/gopsutil/net" "github.com/shirou/gopsutil/net"
) )
var ErrorNoChildren = errors.New("process does not have children")
const ( const (
PrioProcess = 0 // linux/resource.h PrioProcess = 0 // linux/resource.h
) )
@ -205,6 +208,9 @@ func (p *Process) MemoryPercent() (float32, error) {
func (p *Process) Children() ([]*Process, error) { func (p *Process) Children() ([]*Process, error) {
pids, err := common.CallPgrep(invoke, p.Pid) pids, err := common.CallPgrep(invoke, p.Pid)
if err != nil { if err != nil {
if pids == nil || len(pids) == 0 {
return nil, ErrorNoChildren
}
return nil, err return nil, err
} }
ret := make([]*Process, 0, len(pids)) ret := make([]*Process, 0, len(pids))