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process[linux,freebsd,darwin]: implements Children using pgrep.

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This commit is contained in:
Shirou WAKAYAMA 2015-11-24 00:04:20 +09:00
parent dcbb29ae2d
commit dd13300833
6 changed files with 84 additions and 6 deletions
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2
README.rst
View File

@ -195,7 +195,7 @@ cpu_percent x x
cpu_affinity
memory_percent
parent x x
children
children x x x
connections x x
is_running
================ ===== ======= ====== =======

26
internal/common/common_unix.go
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@ -38,3 +38,29 @@ func CallLsof(invoke Invoker, pid int32, args ...string) ([]string, error) {
}
return ret, nil
}
func CallPgrep(invoke Invoker, pid int32) ([]int32, error) {
var cmd []string
cmd = []string{"-P", strconv.Itoa(int(pid))}
pgrep, err := exec.LookPath("pgrep")
if err != nil {
return []int32{}, err
}
out, err := invoke.Command(pgrep, cmd...)
if err != nil {
return []int32{}, err
}
lines := strings.Split(string(out), "\n")
ret := make([]int32, 0, len(lines))
for _, l := range lines {
if len(l) == 0 {
continue
}
i, err := strconv.Atoi(l)
if err != nil {
continue
}
ret = append(ret, int32(i))
}
return ret, nil
}

16
process/process_darwin.go
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@ -10,8 +10,8 @@ import (
"syscall"
"unsafe"
"github.com/shirou/gopsutil/internal/common"
"github.com/shirou/gopsutil/cpu"
"github.com/shirou/gopsutil/internal/common"
"github.com/shirou/gopsutil/net"
)
@ -278,7 +278,19 @@ func (p *Process) MemoryPercent() (float32, error) {
}
func (p *Process) Children() ([]*Process, error) {
return nil, common.NotImplementedError
pids, err := common.CallPgrep(invoke, p.Pid)
if err != nil {
return nil, err
}
ret := make([]*Process, 0, len(pids))
for _, pid := range pids {
np, err := NewProcess(pid)
if err != nil {
return nil, err
}
ret = append(ret, np)
}
return ret, nil
}
func (p *Process) OpenFiles() ([]OpenFilesStat, error) {

16
process/process_freebsd.go
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@ -7,8 +7,8 @@ import (
"encoding/binary"
"unsafe"
"github.com/shirou/gopsutil/internal/common"
cpu "github.com/shirou/gopsutil/cpu"
"github.com/shirou/gopsutil/internal/common"
net "github.com/shirou/gopsutil/net"
)
@ -168,7 +168,19 @@ func (p *Process) MemoryPercent() (float32, error) {
}
func (p *Process) Children() ([]*Process, error) {
return nil, common.NotImplementedError
pids, err := common.CallPgrep(invoke, p.Pid)
if err != nil {
return nil, err
}
ret := make([]*Process, 0, len(pids))
for _, pid := range pids {
np, err := NewProcess(pid)
if err != nil {
return nil, err
}
ret = append(ret, np)
}
return ret, nil
}
func (p *Process) OpenFiles() ([]OpenFilesStat, error) {

14
process/process_linux.go
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@ -203,7 +203,19 @@ func (p *Process) MemoryPercent() (float32, error) {
}
func (p *Process) Children() ([]*Process, error) {
return nil, common.NotImplementedError
pids, err := common.CallPgrep(invoke, p.Pid)
if err != nil {
return nil, err
}
ret := make([]*Process, 0, len(pids))
for _, pid := range pids {
np, err := NewProcess(pid)
if err != nil {
return nil, err
}
ret = append(ret, np)
}
return ret, nil
}
func (p *Process) OpenFiles() ([]OpenFilesStat, error) {

16
process/process_test.go
View File

@ -312,3 +312,19 @@ func Test_Connections(t *testing.T) {
t.Fatalf("wrong connections")
}
}
func Test_Children(t *testing.T) {
p, err := NewProcess(1)
if err != nil {
t.Fatalf("new process error %v", err)
}
c, err := p.Children()
if err != nil {
t.Fatalf("error %v", err)
}
if len(c) == 0 {
t.Fatalf("children is empty")
}
}