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Merge pull request #762 from Lomanic/issue760

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[process] Fix #760 implement IsRunning by checking process with same PID has same CreateTime as current process
pull/767/head
shirou 6 years ago committed by GitHub
parent f58b2e3677 547679f88e
commit b5bcef9226
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GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 70 additions and 73 deletions
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37
process/process.go
Unescape Escape View File

@ -31,6 +31,7 @@ type Process struct {
numThreads int32
memInfo *MemoryInfoStat
sigInfo *SignalInfoStat
createTime int64
lastCPUTimes *cpu.TimesStat
lastCPUTime time.Time
@ -163,6 +164,7 @@ func NewProcess(pid int32) (*Process, error) {
if !exists {
return p, ErrorProcessNotRunning
}
go p.CreateTime()
return p, nil
}
@ -222,6 +224,41 @@ func (p *Process) PercentWithContext(ctx context.Context, interval time.Duration
return ret, nil
}
// IsRunning returns whether the process is still running or not.
func (p *Process) IsRunning() (bool, error) {
return p.IsRunningWithContext(context.Background())
}
func (p *Process) IsRunningWithContext(ctx context.Context) (bool, error) {
createTime, err := p.CreateTimeWithContext(ctx)
if err != nil {
return false, err
}
p2, err := NewProcess(p.Pid)
if err == ErrorProcessNotRunning {
return false, nil
}
createTime2, err := p2.CreateTimeWithContext(ctx)
if err != nil {
return false, err
}
return createTime == createTime2, nil
}
// CreateTime returns created time of the process in milliseconds since the epoch, in UTC.
func (p *Process) CreateTime() (int64, error) {
return p.CreateTimeWithContext(context.Background())
}
func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
if p.createTime != 0 {
return p.createTime, nil
}
createTime, err := p.createTimeWithContext(ctx)
p.createTime = createTime
return p.createTime, err
}
func calculatePercent(t1, t2 *cpu.TimesStat, delta float64, numcpu int) float64 {
if delta == 0 {
return 0

12
process/process_darwin.go
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@ -129,11 +129,8 @@ func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error)
}
return r[0], err
}
func (p *Process) CreateTime() (int64, error) {
return p.CreateTimeWithContext(context.Background())
}
func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
func (p *Process) createTimeWithContext(ctx context.Context) (int64, error) {
r, err := callPsWithContext(ctx, "etime", p.Pid, false)
if err != nil {
return 0, err
@ -527,13 +524,6 @@ func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]
return nil, common.ErrNotImplementedError
}
func (p *Process) IsRunning() (bool, error) {
return p.IsRunningWithContext(context.Background())
}
func (p *Process) IsRunningWithContext(ctx context.Context) (bool, error) {
return true, common.ErrNotImplementedError
}
func (p *Process) MemoryMaps(grouped bool) (*[]MemoryMapsStat, error) {
return p.MemoryMapsWithContext(context.Background(), grouped)
}

11
process/process_fallback.go
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@ -93,11 +93,8 @@ func (p *Process) CmdlineSlice() ([]string, error) {
func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error) {
return []string{}, common.ErrNotImplementedError
}
func (p *Process) CreateTime() (int64, error) {
return p.CreateTimeWithContext(context.Background())
}
func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
func (p *Process) createTimeWithContext(ctx context.Context) (int64, error) {
return 0, common.ErrNotImplementedError
}
func (p *Process) Cwd() (string, error) {
@ -283,13 +280,7 @@ func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]net.IOCountersStat, error) {
return []net.IOCountersStat{}, common.ErrNotImplementedError
}
func (p *Process) IsRunning() (bool, error) {
return p.IsRunningWithContext(context.Background())
}
func (p *Process) IsRunningWithContext(ctx context.Context) (bool, error) {
return true, common.ErrNotImplementedError
}
func (p *Process) MemoryMaps(grouped bool) (*[]MemoryMapsStat, error) {
return p.MemoryMapsWithContext(context.Background(), grouped)
}

12
process/process_freebsd.go
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@ -116,11 +116,8 @@ func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error)
return strParts, nil
}
func (p *Process) CreateTime() (int64, error) {
return p.CreateTimeWithContext(context.Background())
}
func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
func (p *Process) createTimeWithContext(ctx context.Context) (int64, error) {
return 0, common.ErrNotImplementedError
}
func (p *Process) Cwd() (string, error) {
@ -428,13 +425,6 @@ func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]
return nil, common.ErrNotImplementedError
}
func (p *Process) IsRunning() (bool, error) {
return p.IsRunningWithContext(context.Background())
}
func (p *Process) IsRunningWithContext(ctx context.Context) (bool, error) {
return true, common.ErrNotImplementedError
}
func (p *Process) MemoryMaps(grouped bool) (*[]MemoryMapsStat, error) {
return p.MemoryMapsWithContext(context.Background(), grouped)
}

17
process/process_linux.go
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@ -130,12 +130,7 @@ func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error)
return p.fillSliceFromCmdlineWithContext(ctx)
}
// CreateTime returns created time of the process in milliseconds since the epoch, in UTC.
func (p *Process) CreateTime() (int64, error) {
return p.CreateTimeWithContext(context.Background())
}
func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
func (p *Process) createTimeWithContext(ctx context.Context) (int64, error) {
_, _, _, createTime, _, _, _, err := p.fillFromStatWithContext(ctx)
if err != nil {
return 0, err
@ -550,16 +545,6 @@ func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]
return net.IOCountersByFile(pernic, filename)
}
// IsRunning returns whether the process is running or not.
// Not implemented yet.
func (p *Process) IsRunning() (bool, error) {
return p.IsRunningWithContext(context.Background())
}
func (p *Process) IsRunningWithContext(ctx context.Context) (bool, error) {
return true, common.ErrNotImplementedError
}
// MemoryMaps get memory maps from /proc/(pid)/smaps
func (p *Process) MemoryMaps(grouped bool) (*[]MemoryMapsStat, error) {
return p.MemoryMapsWithContext(context.Background(), grouped)

13
process/process_openbsd.go
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@ -114,11 +114,7 @@ func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
return strings.Join(argv, " "), nil
}
func (p *Process) CreateTime() (int64, error) {
return p.CreateTimeWithContext(context.Background())
}
func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
func (p *Process) createTimeWithContext(ctx context.Context) (int64, error) {
return 0, common.ErrNotImplementedError
}
func (p *Process) Cwd() (string, error) {
@ -415,13 +411,6 @@ func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]
return nil, common.ErrNotImplementedError
}
func (p *Process) IsRunning() (bool, error) {
return p.IsRunningWithContext(context.Background())
}
func (p *Process) IsRunningWithContext(ctx context.Context) (bool, error) {
return true, common.ErrNotImplementedError
}
func (p *Process) MemoryMaps(grouped bool) (*[]MemoryMapsStat, error) {
return p.MemoryMapsWithContext(context.Background(), grouped)
}

27
process/process_test.go
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@ -539,3 +539,30 @@ func Test_Kill(t *testing.T) {
assert.Nil(t, err)
cmd.Wait()
}
func Test_IsRunning(t *testing.T) {
var cmd *exec.Cmd
if runtime.GOOS == "windows" {
cmd = exec.Command("ping", "localhost", "-n", "2")
} else {
cmd = exec.Command("sleep", "1")
}
cmd.Start()
p, err := NewProcess(int32(cmd.Process.Pid))
assert.Nil(t, err)
running, err := p.IsRunning()
if err != nil {
t.Fatalf("IsRunning error: %v", err)
}
if !running {
t.Fatalf("process should be found running")
}
cmd.Wait()
running, err = p.IsRunning()
if err != nil {
t.Fatalf("IsRunning error: %v", err)
}
if running {
t.Fatalf("process should NOT be found running")
}
}

14
process/process_windows.go
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@ -320,11 +320,7 @@ func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error)
return strings.Split(cmdline, " "), nil
}
func (p *Process) CreateTime() (int64, error) {
return p.CreateTimeWithContext(context.Background())
}
func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
func (p *Process) createTimeWithContext(ctx context.Context) (int64, error) {
ru, err := getRusage(p.Pid)
if err != nil {
return 0, fmt.Errorf("could not get CreationDate: %s", err)
@ -659,14 +655,6 @@ func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]
return nil, common.ErrNotImplementedError
}
func (p *Process) IsRunning() (bool, error) {
return p.IsRunningWithContext(context.Background())
}
func (p *Process) IsRunningWithContext(ctx context.Context) (bool, error) {
return true, common.ErrNotImplementedError
}
func (p *Process) MemoryMaps(grouped bool) (*[]MemoryMapsStat, error) {
return p.MemoryMapsWithContext(context.Background(), grouped)
}

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