Update vendor package github.com/shirou/gopsutil/process, resolves #3881

vendor/github.com/shirou/gopsutil/process/process.go

@@ -1,6 +1,7 @@
 package process
 
 import (
+	"context"
 	"encoding/json"
 	"runtime"
 	"time"
@@ -26,9 +27,12 @@ type Process struct {
 	gids           []int32
 	numThreads     int32
 	memInfo        *MemoryInfoStat
+	sigInfo        *SignalInfoStat
 
 	lastCPUTimes *cpu.TimesStat
 	lastCPUTime  time.Time
+
+	tgid int32
 }
 
 type OpenFilesStat struct {
@@ -39,13 +43,25 @@ type OpenFilesStat struct {
 type MemoryInfoStat struct {
 	RSS    uint64 `json:"rss"`    // bytes
 	VMS    uint64 `json:"vms"`    // bytes
+	Data   uint64 `json:"data"`   // bytes
+	Stack  uint64 `json:"stack"`  // bytes
+	Locked uint64 `json:"locked"` // bytes
 	Swap   uint64 `json:"swap"`   // bytes
 }
 
+type SignalInfoStat struct {
+	PendingProcess uint64 `json:"pending_process"`
+	PendingThread  uint64 `json:"pending_thread"`
+	Blocked        uint64 `json:"blocked"`
+	Ignored        uint64 `json:"ignored"`
+	Caught         uint64 `json:"caught"`
+}
+
 type RlimitStat struct {
 	Resource int32  `json:"resource"`
-	Soft     int32 `json:"soft"`
+	Soft     int32  `json:"soft"` //TODO too small. needs to be uint64
-	Hard     int32 `json:"hard"`
+	Hard     int32  `json:"hard"` //TODO too small. needs to be uint64
+	Used     uint64 `json:"used"`
 }
 
 type IOCountersStat struct {
@@ -112,6 +128,10 @@ func (p NumCtxSwitchesStat) String() string {
 }
 
 func PidExists(pid int32) (bool, error) {
+	return PidExistsWithContext(context.Background(), pid)
+}
+
+func PidExistsWithContext(ctx context.Context, pid int32) (bool, error) {
 	pids, err := Pids()
 	if err != nil {
 		return false, err
@@ -129,6 +149,10 @@ func PidExists(pid int32) (bool, error) {
 // If interval is 0, return difference from last call(non-blocking).
 // If interval > 0, wait interval sec and return diffrence between start and end.
 func (p *Process) Percent(interval time.Duration) (float64, error) {
+	return p.PercentWithContext(context.Background(), interval)
+}
+
+func (p *Process) PercentWithContext(ctx context.Context, interval time.Duration) (float64, error) {
 	cpuTimes, err := p.Times()
 	if err != nil {
 		return 0, err
@@ -172,6 +196,10 @@ func calculatePercent(t1, t2 *cpu.TimesStat, delta float64, numcpu int) float64
 
 // MemoryPercent returns how many percent of the total RAM this process uses
 func (p *Process) MemoryPercent() (float32, error) {
+	return p.MemoryPercentWithContext(context.Background())
+}
+
+func (p *Process) MemoryPercentWithContext(ctx context.Context) (float32, error) {
 	machineMemory, err := mem.VirtualMemory()
 	if err != nil {
 		return 0, err
@@ -186,20 +214,28 @@ func (p *Process) MemoryPercent() (float32, error) {
 
 	return (100 * float32(used) / float32(total)), nil
 }
+
 // CPU_Percent returns how many percent of the CPU time this process uses
 func (p *Process) CPUPercent() (float64, error) {
+	return p.CPUPercentWithContext(context.Background())
+}
+
+func (p *Process) CPUPercentWithContext(ctx context.Context) (float64, error) {
 	crt_time, err := p.CreateTime()
 	if err != nil {
 		return 0, err
 	}
 
-
+	cput, err := p.Times()
-        cpu, err := p.Times()
 	if err != nil {
 		return 0, err
 	}
 
-
+	created := time.Unix(0, crt_time*int64(time.Millisecond))
-        return (100 * (cpu.Total()) / float64(time.Now().Unix()-(crt_time/1000))), nil
+	totalTime := time.Since(created).Seconds()
+	if totalTime <= 0 {
+		return 0, nil
 	}
 
+	return 100 * cput.Total() / totalTime, nil
+}

vendor/github.com/shirou/gopsutil/process/process_darwin.go

@@ -4,6 +4,7 @@ package process
 
 import (
 	"bytes"
+	"context"
 	"encoding/binary"
 	"fmt"
 	"os/exec"
@@ -44,6 +45,10 @@ type MemoryMapsStat struct {
 }
 
 func Pids() ([]int32, error) {
+	return PidsWithContext(context.Background())
+}
+
+func PidsWithContext(ctx context.Context) ([]int32, error) {
 	var ret []int32
 
 	pids, err := callPs("pid", 0, false)
@@ -63,6 +68,10 @@ func Pids() ([]int32, error) {
 }
 
 func (p *Process) Ppid() (int32, error) {
+	return p.PpidWithContext(context.Background())
+}
+
+func (p *Process) PpidWithContext(ctx context.Context) (int32, error) {
 	r, err := callPs("ppid", p.Pid, false)
 	if err != nil {
 		return 0, err
@@ -76,6 +85,10 @@ func (p *Process) Ppid() (int32, error) {
 	return int32(v), err
 }
 func (p *Process) Name() (string, error) {
+	return p.NameWithContext(context.Background())
+}
+
+func (p *Process) NameWithContext(ctx context.Context) (string, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return "", err
@@ -83,7 +96,14 @@ func (p *Process) Name() (string, error) {
 
 	return common.IntToString(k.Proc.P_comm[:]), nil
 }
+func (p *Process) Tgid() (int32, error) {
+	return 0, common.ErrNotImplementedError
+}
 func (p *Process) Exe() (string, error) {
+	return p.ExeWithContext(context.Background())
+}
+
+func (p *Process) ExeWithContext(ctx context.Context) (string, error) {
 	lsof_bin, err := exec.LookPath("lsof")
 	if err != nil {
 		return "", err
@@ -117,6 +137,10 @@ func (p *Process) Exe() (string, error) {
 // Cmdline returns the command line arguments of the process as a string with
 // each argument separated by 0x20 ascii character.
 func (p *Process) Cmdline() (string, error) {
+	return p.CmdlineWithContext(context.Background())
+}
+
+func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
 	r, err := callPs("command", p.Pid, false)
 	if err != nil {
 		return "", err
@@ -130,6 +154,10 @@ func (p *Process) Cmdline() (string, error) {
 // reported as two separate items. In order to do something better CGO would be needed
 // to use the native darwin functions.
 func (p *Process) CmdlineSlice() ([]string, error) {
+	return p.CmdlineSliceWithContext(context.Background())
+}
+
+func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error) {
 	r, err := callPs("command", p.Pid, false)
 	if err != nil {
 		return nil, err
@@ -137,6 +165,10 @@ func (p *Process) CmdlineSlice() ([]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) {
 	r, err := callPs("etime", p.Pid, false)
 	if err != nil {
 		return 0, err
@@ -167,9 +199,17 @@ func (p *Process) CreateTime() (int64, error) {
 	return start.Unix() * 1000, nil
 }
 func (p *Process) Cwd() (string, error) {
+	return p.CwdWithContext(context.Background())
+}
+
+func (p *Process) CwdWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Parent() (*Process, error) {
+	return p.ParentWithContext(context.Background())
+}
+
+func (p *Process) ParentWithContext(ctx context.Context) (*Process, error) {
 	rr, err := common.CallLsof(invoke, p.Pid, "-FR")
 	if err != nil {
 		return nil, err
@@ -188,6 +228,10 @@ func (p *Process) Parent() (*Process, error) {
 	return nil, fmt.Errorf("could not find parent line")
 }
 func (p *Process) Status() (string, error) {
+	return p.StatusWithContext(context.Background())
+}
+
+func (p *Process) StatusWithContext(ctx context.Context) (string, error) {
 	r, err := callPs("state", p.Pid, false)
 	if err != nil {
 		return "", err
@@ -196,6 +240,10 @@ func (p *Process) Status() (string, error) {
 	return r[0][0], err
 }
 func (p *Process) Uids() ([]int32, error) {
+	return p.UidsWithContext(context.Background())
+}
+
+func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -207,6 +255,10 @@ func (p *Process) Uids() ([]int32, error) {
 	return []int32{userEffectiveUID}, nil
 }
 func (p *Process) Gids() ([]int32, error) {
+	return p.GidsWithContext(context.Background())
+}
+
+func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -218,6 +270,10 @@ func (p *Process) Gids() ([]int32, error) {
 	return gids, nil
 }
 func (p *Process) Terminal() (string, error) {
+	return p.TerminalWithContext(context.Background())
+}
+
+func (p *Process) TerminalWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 	/*
 		k, err := p.getKProc()
@@ -235,6 +291,10 @@ func (p *Process) Terminal() (string, error) {
 	*/
 }
 func (p *Process) Nice() (int32, error) {
+	return p.NiceWithContext(context.Background())
+}
+
+func (p *Process) NiceWithContext(ctx context.Context) (int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return 0, err
@@ -242,30 +302,66 @@ func (p *Process) Nice() (int32, error) {
 	return int32(k.Proc.P_nice), nil
 }
 func (p *Process) IOnice() (int32, error) {
+	return p.IOniceWithContext(context.Background())
+}
+
+func (p *Process) IOniceWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Rlimit() ([]RlimitStat, error) {
+	return p.RlimitWithContext(context.Background())
+}
+
+func (p *Process) RlimitWithContext(ctx context.Context) ([]RlimitStat, error) {
+	var rlimit []RlimitStat
+	return rlimit, common.ErrNotImplementedError
+}
+func (p *Process) RlimitUsage(gatherUsed bool) ([]RlimitStat, error) {
+	return p.RlimitUsageWithContext(context.Background(), gatherUsed)
+}
+
+func (p *Process) RlimitUsageWithContext(ctx context.Context, gatherUsed bool) ([]RlimitStat, error) {
 	var rlimit []RlimitStat
 	return rlimit, common.ErrNotImplementedError
 }
 func (p *Process) IOCounters() (*IOCountersStat, error) {
+	return p.IOCountersWithContext(context.Background())
+}
+
+func (p *Process) IOCountersWithContext(ctx context.Context) (*IOCountersStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
+	return p.NumCtxSwitchesWithContext(context.Background())
+}
+
+func (p *Process) NumCtxSwitchesWithContext(ctx context.Context) (*NumCtxSwitchesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) NumFDs() (int32, error) {
+	return p.NumFDsWithContext(context.Background())
+}
+
+func (p *Process) NumFDsWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) NumThreads() (int32, error) {
+	return p.NumThreadsWithContext(context.Background())
+}
+
+func (p *Process) NumThreadsWithContext(ctx context.Context) (int32, error) {
 	r, err := callPs("utime,stime", p.Pid, true)
 	if err != nil {
 		return 0, err
 	}
 	return int32(len(r)), nil
 }
-func (p *Process) Threads() (map[string]string, error) {
+func (p *Process) Threads() (map[int32]*cpu.TimesStat, error) {
-	ret := make(map[string]string, 0)
+	return p.ThreadsWithContext(context.Background())
+}
+
+func (p *Process) ThreadsWithContext(ctx context.Context) (map[int32]*cpu.TimesStat, error) {
+	ret := make(map[int32]*cpu.TimesStat)
 	return ret, common.ErrNotImplementedError
 }
 
@@ -295,6 +391,10 @@ func convertCPUTimes(s string) (ret float64, err error) {
 	return float64(t) / ClockTicks, nil
 }
 func (p *Process) Times() (*cpu.TimesStat, error) {
+	return p.TimesWithContext(context.Background())
+}
+
+func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error) {
 	r, err := callPs("utime,stime", p.Pid, false)
 
 	if err != nil {
@@ -318,9 +418,17 @@ func (p *Process) Times() (*cpu.TimesStat, error) {
 	return ret, nil
 }
 func (p *Process) CPUAffinity() ([]int32, error) {
+	return p.CPUAffinityWithContext(context.Background())
+}
+
+func (p *Process) CPUAffinityWithContext(ctx context.Context) ([]int32, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
+	return p.MemoryInfoWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoWithContext(ctx context.Context) (*MemoryInfoStat, error) {
 	r, err := callPs("rss,vsize,pagein", p.Pid, false)
 	if err != nil {
 		return nil, err
@@ -347,10 +455,18 @@ func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
 	return ret, nil
 }
 func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
+	return p.MemoryInfoExWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoExWithContext(ctx context.Context) (*MemoryInfoExStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) Children() ([]*Process, error) {
+	return p.ChildrenWithContext(context.Background())
+}
+
+func (p *Process) ChildrenWithContext(ctx context.Context) ([]*Process, error) {
 	pids, err := common.CallPgrep(invoke, p.Pid)
 	if err != nil {
 		return nil, err
@@ -367,27 +483,51 @@ func (p *Process) Children() ([]*Process, error) {
 }
 
 func (p *Process) OpenFiles() ([]OpenFilesStat, error) {
+	return p.OpenFilesWithContext(context.Background())
+}
+
+func (p *Process) OpenFilesWithContext(ctx context.Context) ([]OpenFilesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) Connections() ([]net.ConnectionStat, error) {
+	return p.ConnectionsWithContext(context.Background())
+}
+
+func (p *Process) ConnectionsWithContext(ctx context.Context) ([]net.ConnectionStat, error) {
 	return net.ConnectionsPid("all", p.Pid)
 }
 
 func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
+	return p.NetIOCountersWithContext(context.Background(), pernic)
+}
+
+func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]net.IOCountersStat, error) {
 	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)
+}
+
+func (p *Process) MemoryMapsWithContext(ctx context.Context, grouped bool) (*[]MemoryMapsStat, error) {
 	var ret []MemoryMapsStat
 	return &ret, common.ErrNotImplementedError
 }
 
-func processes() ([]Process, error) {
+func Processes() ([]*Process, error) {
-	results := make([]Process, 0, 50)
+	return ProcessesWithContext(context.Background())
+}
+
+func ProcessesWithContext(ctx context.Context) ([]*Process, error) {
+	results := []*Process{}
 
 	mib := []int32{CTLKern, KernProc, KernProcAll, 0}
 	buf, length, err := common.CallSyscall(mib)
@@ -399,13 +539,6 @@ func processes() ([]Process, error) {
 	k := KinfoProc{}
 	procinfoLen := int(unsafe.Sizeof(k))
 	count := int(length / uint64(procinfoLen))
-	/*
-		fmt.Println(length, procinfoLen, count)
-		b := buf[0*procinfoLen : 0*procinfoLen+procinfoLen]
-		fmt.Println(b)
-		kk, err := parseKinfoProc(b)
-		fmt.Printf("%#v", kk)
-	*/
 
 	// parse buf to procs
 	for i := 0; i < count; i++ {
@@ -418,7 +551,7 @@ func processes() ([]Process, error) {
 		if err != nil {
 			continue
 		}
-		results = append(results, *p)
+		results = append(results, p)
 	}
 
 	return results, nil
@@ -439,6 +572,10 @@ func parseKinfoProc(buf []byte) (KinfoProc, error) {
 // Returns a proc as defined here:
 // http://unix.superglobalmegacorp.com/Net2/newsrc/sys/kinfo_proc.h.html
 func (p *Process) getKProc() (*KinfoProc, error) {
+	return p.getKProcWithContext(context.Background())
+}
+
+func (p *Process) getKProcWithContext(ctx context.Context) (*KinfoProc, error) {
 	mib := []int32{CTLKern, KernProc, KernProcPID, p.Pid}
 	procK := KinfoProc{}
 	length := uint64(unsafe.Sizeof(procK))

vendor/github.com/shirou/gopsutil/process/process_fallback.go

@@ -3,6 +3,7 @@
 package process
 
 import (
+	"context"
 	"syscall"
 
 	"github.com/shirou/gopsutil/cpu"
@@ -28,6 +29,10 @@ type MemoryInfoExStat struct {
 }
 
 func Pids() ([]int32, error) {
+	return PidsWithContext(context.Background())
+}
+
+func PidsWithContext(ctx context.Context) ([]int32, error) {
 	return []int32{}, common.ErrNotImplementedError
 }
 
@@ -36,110 +41,264 @@ func NewProcess(pid int32) (*Process, error) {
 }
 
 func (p *Process) Ppid() (int32, error) {
+	return p.PpidWithContext(context.Background())
+}
+
+func (p *Process) PpidWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Name() (string, error) {
+	return p.NameWithContext(context.Background())
+}
+
+func (p *Process) NameWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
+func (p *Process) Tgid() (int32, error) {
+	return 0, common.ErrNotImplementedError
+}
 func (p *Process) Exe() (string, error) {
+	return p.ExeWithContext(context.Background())
+}
+
+func (p *Process) ExeWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Cmdline() (string, error) {
+	return p.CmdlineWithContext(context.Background())
+}
+
+func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) CmdlineSlice() ([]string, error) {
+	return p.CmdlineSliceWithContext(context.Background())
+}
+
+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) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Cwd() (string, error) {
+	return p.CwdWithContext(context.Background())
+}
+
+func (p *Process) CwdWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Parent() (*Process, error) {
+	return p.ParentWithContext(context.Background())
+}
+
+func (p *Process) ParentWithContext(ctx context.Context) (*Process, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) Status() (string, error) {
+	return p.StatusWithContext(context.Background())
+}
+
+func (p *Process) StatusWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Uids() ([]int32, error) {
+	return p.UidsWithContext(context.Background())
+}
+
+func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
 	return []int32{}, common.ErrNotImplementedError
 }
 func (p *Process) Gids() ([]int32, error) {
+	return p.GidsWithContext(context.Background())
+}
+
+func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
 	return []int32{}, common.ErrNotImplementedError
 }
 func (p *Process) Terminal() (string, error) {
+	return p.TerminalWithContext(context.Background())
+}
+
+func (p *Process) TerminalWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Nice() (int32, error) {
+	return p.NiceWithContext(context.Background())
+}
+
+func (p *Process) NiceWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) IOnice() (int32, error) {
+	return p.IOniceWithContext(context.Background())
+}
+
+func (p *Process) IOniceWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Rlimit() ([]RlimitStat, error) {
+	return p.RlimitWithContext(context.Background())
+}
+
+func (p *Process) RlimitWithContext(ctx context.Context) ([]RlimitStat, error) {
+	return nil, common.ErrNotImplementedError
+}
+func (p *Process) RlimitUsage(gatherUsed bool) ([]RlimitStat, error) {
+	return p.RlimitUsageWithContext(context.Background(), gatherUsed)
+}
+
+func (p *Process) RlimitUsageWithContext(ctx context.Context, gatherUsed bool) ([]RlimitStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) IOCounters() (*IOCountersStat, error) {
+	return p.IOCountersWithContext(context.Background())
+}
+
+func (p *Process) IOCountersWithContext(ctx context.Context) (*IOCountersStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
+	return p.NumCtxSwitchesWithContext(context.Background())
+}
+
+func (p *Process) NumCtxSwitchesWithContext(ctx context.Context) (*NumCtxSwitchesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) NumFDs() (int32, error) {
+	return p.NumFDsWithContext(context.Background())
+}
+
+func (p *Process) NumFDsWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) NumThreads() (int32, error) {
+	return p.NumThreadsWithContext(context.Background())
+}
+
+func (p *Process) NumThreadsWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
-func (p *Process) Threads() (map[string]string, error) {
+func (p *Process) Threads() (map[int32]*cpu.TimesStat, error) {
+	return p.ThreadsWithContext(context.Background())
+}
+
+func (p *Process) ThreadsWithContext(ctx context.Context) (map[int32]*cpu.TimesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) Times() (*cpu.TimesStat, error) {
+	return p.TimesWithContext(context.Background())
+}
+
+func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) CPUAffinity() ([]int32, error) {
+	return p.CPUAffinityWithContext(context.Background())
+}
+
+func (p *Process) CPUAffinityWithContext(ctx context.Context) ([]int32, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
+	return p.MemoryInfoWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoWithContext(ctx context.Context) (*MemoryInfoStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
+	return p.MemoryInfoExWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoExWithContext(ctx context.Context) (*MemoryInfoExStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) Children() ([]*Process, error) {
+	return p.ChildrenWithContext(context.Background())
+}
+
+func (p *Process) ChildrenWithContext(ctx context.Context) ([]*Process, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) OpenFiles() ([]OpenFilesStat, error) {
+	return p.OpenFilesWithContext(context.Background())
+}
+
+func (p *Process) OpenFilesWithContext(ctx context.Context) ([]OpenFilesStat, error) {
 	return []OpenFilesStat{}, common.ErrNotImplementedError
 }
 func (p *Process) Connections() ([]net.ConnectionStat, error) {
+	return p.ConnectionsWithContext(context.Background())
+}
+
+func (p *Process) ConnectionsWithContext(ctx context.Context) ([]net.ConnectionStat, error) {
 	return []net.ConnectionStat{}, common.ErrNotImplementedError
 }
 func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
+	return p.NetIOCountersWithContext(context.Background(), pernic)
+}
+
+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)
+}
+
+func (p *Process) MemoryMapsWithContext(ctx context.Context, grouped bool) (*[]MemoryMapsStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) SendSignal(sig syscall.Signal) error {
+	return p.SendSignalWithContext(context.Background(), sig)
+}
+
+func (p *Process) SendSignalWithContext(ctx context.Context, sig syscall.Signal) error {
 	return common.ErrNotImplementedError
 }
 func (p *Process) Suspend() error {
+	return p.SuspendWithContext(context.Background())
+}
+
+func (p *Process) SuspendWithContext(ctx context.Context) error {
 	return common.ErrNotImplementedError
 }
 func (p *Process) Resume() error {
+	return p.ResumeWithContext(context.Background())
+}
+
+func (p *Process) ResumeWithContext(ctx context.Context) error {
 	return common.ErrNotImplementedError
 }
 func (p *Process) Terminate() error {
+	return p.TerminateWithContext(context.Background())
+}
+
+func (p *Process) TerminateWithContext(ctx context.Context) error {
 	return common.ErrNotImplementedError
 }
 func (p *Process) Kill() error {
+	return p.KillWithContext(context.Background())
+}
+
+func (p *Process) KillWithContext(ctx context.Context) error {
 	return common.ErrNotImplementedError
 }
 func (p *Process) Username() (string, error) {
+	return p.UsernameWithContext(context.Background())
+}
+
+func (p *Process) UsernameWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }

vendor/github.com/shirou/gopsutil/process/process_freebsd.go

@@ -4,6 +4,7 @@ package process
 
 import (
 	"bytes"
+	"context"
 	"encoding/binary"
 	"strings"
 
@@ -21,8 +22,12 @@ type MemoryMapsStat struct {
 }
 
 func Pids() ([]int32, error) {
+	return PidsWithContext(context.Background())
+}
+
+func PidsWithContext(ctx context.Context) ([]int32, error) {
 	var ret []int32
-	procs, err := processes()
+	procs, err := Processes()
 	if err != nil {
 		return ret, nil
 	}
@@ -35,6 +40,10 @@ func Pids() ([]int32, error) {
 }
 
 func (p *Process) Ppid() (int32, error) {
+	return p.PpidWithContext(context.Background())
+}
+
+func (p *Process) PpidWithContext(ctx context.Context) (int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return 0, err
@@ -43,6 +52,10 @@ func (p *Process) Ppid() (int32, error) {
 	return k.Ppid, nil
 }
 func (p *Process) Name() (string, error) {
+	return p.NameWithContext(context.Background())
+}
+
+func (p *Process) NameWithContext(ctx context.Context) (string, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return "", err
@@ -50,11 +63,22 @@ func (p *Process) Name() (string, error) {
 
 	return common.IntToString(k.Comm[:]), nil
 }
+func (p *Process) Tgid() (int32, error) {
+	return 0, common.ErrNotImplementedError
+}
 func (p *Process) Exe() (string, error) {
+	return p.ExeWithContext(context.Background())
+}
+
+func (p *Process) ExeWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 
 func (p *Process) Cmdline() (string, error) {
+	return p.CmdlineWithContext(context.Background())
+}
+
+func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
 	mib := []int32{CTLKern, KernProc, KernProcArgs, p.Pid}
 	buf, _, err := common.CallSyscall(mib)
 	if err != nil {
@@ -71,6 +95,10 @@ func (p *Process) Cmdline() (string, error) {
 }
 
 func (p *Process) CmdlineSlice() ([]string, error) {
+	return p.CmdlineSliceWithContext(context.Background())
+}
+
+func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error) {
 	mib := []int32{CTLKern, KernProc, KernProcArgs, p.Pid}
 	buf, _, err := common.CallSyscall(mib)
 	if err != nil {
@@ -91,15 +119,31 @@ func (p *Process) CmdlineSlice() ([]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) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Cwd() (string, error) {
+	return p.CwdWithContext(context.Background())
+}
+
+func (p *Process) CwdWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Parent() (*Process, error) {
+	return p.ParentWithContext(context.Background())
+}
+
+func (p *Process) ParentWithContext(ctx context.Context) (*Process, error) {
 	return p, common.ErrNotImplementedError
 }
 func (p *Process) Status() (string, error) {
+	return p.StatusWithContext(context.Background())
+}
+
+func (p *Process) StatusWithContext(ctx context.Context) (string, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return "", err
@@ -125,6 +169,10 @@ func (p *Process) Status() (string, error) {
 	return s, nil
 }
 func (p *Process) Uids() ([]int32, error) {
+	return p.UidsWithContext(context.Background())
+}
+
+func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -137,6 +185,10 @@ func (p *Process) Uids() ([]int32, error) {
 	return uids, nil
 }
 func (p *Process) Gids() ([]int32, error) {
+	return p.GidsWithContext(context.Background())
+}
+
+func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -148,6 +200,10 @@ func (p *Process) Gids() ([]int32, error) {
 	return gids, nil
 }
 func (p *Process) Terminal() (string, error) {
+	return p.TerminalWithContext(context.Background())
+}
+
+func (p *Process) TerminalWithContext(ctx context.Context) (string, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return "", err
@@ -163,6 +219,10 @@ func (p *Process) Terminal() (string, error) {
 	return termmap[ttyNr], nil
 }
 func (p *Process) Nice() (int32, error) {
+	return p.NiceWithContext(context.Background())
+}
+
+func (p *Process) NiceWithContext(ctx context.Context) (int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return 0, err
@@ -170,13 +230,33 @@ func (p *Process) Nice() (int32, error) {
 	return int32(k.Nice), nil
 }
 func (p *Process) IOnice() (int32, error) {
+	return p.IOniceWithContext(context.Background())
+}
+
+func (p *Process) IOniceWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Rlimit() ([]RlimitStat, error) {
+	return p.RlimitWithContext(context.Background())
+}
+
+func (p *Process) RlimitWithContext(ctx context.Context) ([]RlimitStat, error) {
+	var rlimit []RlimitStat
+	return rlimit, common.ErrNotImplementedError
+}
+func (p *Process) RlimitUsage(gatherUsed bool) ([]RlimitStat, error) {
+	return p.RlimitUsageWithContext(context.Background(), gatherUsed)
+}
+
+func (p *Process) RlimitUsageWithContext(ctx context.Context, gatherUsed bool) ([]RlimitStat, error) {
 	var rlimit []RlimitStat
 	return rlimit, common.ErrNotImplementedError
 }
 func (p *Process) IOCounters() (*IOCountersStat, error) {
+	return p.IOCountersWithContext(context.Background())
+}
+
+func (p *Process) IOCountersWithContext(ctx context.Context) (*IOCountersStat, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -187,12 +267,24 @@ func (p *Process) IOCounters() (*IOCountersStat, error) {
 	}, nil
 }
 func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
+	return p.NumCtxSwitchesWithContext(context.Background())
+}
+
+func (p *Process) NumCtxSwitchesWithContext(ctx context.Context) (*NumCtxSwitchesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) NumFDs() (int32, error) {
+	return p.NumFDsWithContext(context.Background())
+}
+
+func (p *Process) NumFDsWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) NumThreads() (int32, error) {
+	return p.NumThreadsWithContext(context.Background())
+}
+
+func (p *Process) NumThreadsWithContext(ctx context.Context) (int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return 0, err
@@ -200,11 +292,19 @@ func (p *Process) NumThreads() (int32, error) {
 
 	return k.Numthreads, nil
 }
-func (p *Process) Threads() (map[string]string, error) {
+func (p *Process) Threads() (map[int32]*cpu.TimesStat, error) {
-	ret := make(map[string]string, 0)
+	return p.ThreadsWithContext(context.Background())
+}
+
+func (p *Process) ThreadsWithContext(ctx context.Context) (map[int32]*cpu.TimesStat, error) {
+	ret := make(map[int32]*cpu.TimesStat)
 	return ret, common.ErrNotImplementedError
 }
 func (p *Process) Times() (*cpu.TimesStat, error) {
+	return p.TimesWithContext(context.Background())
+}
+
+func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -216,9 +316,17 @@ func (p *Process) Times() (*cpu.TimesStat, error) {
 	}, nil
 }
 func (p *Process) CPUAffinity() ([]int32, error) {
+	return p.CPUAffinityWithContext(context.Background())
+}
+
+func (p *Process) CPUAffinityWithContext(ctx context.Context) ([]int32, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
+	return p.MemoryInfoWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoWithContext(ctx context.Context) (*MemoryInfoStat, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -235,10 +343,18 @@ func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
 	}, nil
 }
 func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
+	return p.MemoryInfoExWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoExWithContext(ctx context.Context) (*MemoryInfoExStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) Children() ([]*Process, error) {
+	return p.ChildrenWithContext(context.Background())
+}
+
+func (p *Process) ChildrenWithContext(ctx context.Context) ([]*Process, error) {
 	pids, err := common.CallPgrep(invoke, p.Pid)
 	if err != nil {
 		return nil, err
@@ -255,27 +371,51 @@ func (p *Process) Children() ([]*Process, error) {
 }
 
 func (p *Process) OpenFiles() ([]OpenFilesStat, error) {
+	return p.OpenFilesWithContext(context.Background())
+}
+
+func (p *Process) OpenFilesWithContext(ctx context.Context) ([]OpenFilesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) Connections() ([]net.ConnectionStat, error) {
+	return p.ConnectionsWithContext(context.Background())
+}
+
+func (p *Process) ConnectionsWithContext(ctx context.Context) ([]net.ConnectionStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
+	return p.NetIOCountersWithContext(context.Background(), pernic)
+}
+
+func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]net.IOCountersStat, error) {
 	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)
+}
+
+func (p *Process) MemoryMapsWithContext(ctx context.Context, grouped bool) (*[]MemoryMapsStat, error) {
 	var ret []MemoryMapsStat
 	return &ret, common.ErrNotImplementedError
 }
 
-func processes() ([]Process, error) {
+func Processes() ([]*Process, error) {
-	results := make([]Process, 0, 50)
+	return ProcessesWithContext(context.Background())
+}
+
+func ProcessesWithContext(ctx context.Context) ([]*Process, error) {
+	results := []*Process{}
 
 	mib := []int32{CTLKern, KernProc, KernProcProc, 0}
 	buf, length, err := common.CallSyscall(mib)
@@ -298,7 +438,7 @@ func processes() ([]Process, error) {
 			continue
 		}
 
-		results = append(results, *p)
+		results = append(results, p)
 	}
 
 	return results, nil
@@ -312,6 +452,10 @@ func parseKinfoProc(buf []byte) (KinfoProc, error) {
 }
 
 func (p *Process) getKProc() (*KinfoProc, error) {
+	return p.getKProcWithContext(context.Background())
+}
+
+func (p *Process) getKProcWithContext(ctx context.Context) (*KinfoProc, error) {
 	mib := []int32{CTLKern, KernProc, KernProcPID, p.Pid}
 
 	buf, length, err := common.CallSyscall(mib)

vendor/github.com/shirou/gopsutil/process/process_linux.go

@@ -5,6 +5,7 @@ package process
 import (
 	"bufio"
 	"bytes"
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -83,7 +84,11 @@ func NewProcess(pid int32) (*Process, error) {
 
 // Ppid returns Parent Process ID of the process.
 func (p *Process) Ppid() (int32, error) {
-	_, ppid, _, _, _, err := p.fillFromStat()
+	return p.PpidWithContext(context.Background())
+}
+
+func (p *Process) PpidWithContext(ctx context.Context) (int32, error) {
+	_, ppid, _, _, _, _, err := p.fillFromStat()
 	if err != nil {
 		return -1, err
 	}
@@ -92,6 +97,10 @@ func (p *Process) Ppid() (int32, error) {
 
 // Name returns name of the process.
 func (p *Process) Name() (string, error) {
+	return p.NameWithContext(context.Background())
+}
+
+func (p *Process) NameWithContext(ctx context.Context) (string, error) {
 	if p.name == "" {
 		if err := p.fillFromStatus(); err != nil {
 			return "", err
@@ -100,26 +109,52 @@ func (p *Process) Name() (string, error) {
 	return p.name, nil
 }
 
+// Tgid returns tgid, a Linux-synonym for user-space Pid
+func (p *Process) Tgid() (int32, error) {
+	if p.tgid == 0 {
+		if err := p.fillFromStatus(); err != nil {
+			return 0, err
+		}
+	}
+	return p.tgid, nil
+}
+
 // Exe returns executable path of the process.
 func (p *Process) Exe() (string, error) {
+	return p.ExeWithContext(context.Background())
+}
+
+func (p *Process) ExeWithContext(ctx context.Context) (string, error) {
 	return p.fillFromExe()
 }
 
 // Cmdline returns the command line arguments of the process as a string with
 // each argument separated by 0x20 ascii character.
 func (p *Process) Cmdline() (string, error) {
+	return p.CmdlineWithContext(context.Background())
+}
+
+func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
 	return p.fillFromCmdline()
 }
 
 // CmdlineSlice returns the command line arguments of the process as a slice with each
 // element being an argument.
 func (p *Process) CmdlineSlice() ([]string, error) {
+	return p.CmdlineSliceWithContext(context.Background())
+}
+
+func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error) {
 	return p.fillSliceFromCmdline()
 }
 
 // CreateTime returns created time of the process in milliseconds since the epoch, in UTC.
 func (p *Process) CreateTime() (int64, error) {
-	_, _, _, createTime, _, err := p.fillFromStat()
+	return p.CreateTimeWithContext(context.Background())
+}
+
+func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
+	_, _, _, createTime, _, _, err := p.fillFromStat()
 	if err != nil {
 		return 0, err
 	}
@@ -128,11 +163,19 @@ func (p *Process) CreateTime() (int64, error) {
 
 // Cwd returns current working directory of the process.
 func (p *Process) Cwd() (string, error) {
+	return p.CwdWithContext(context.Background())
+}
+
+func (p *Process) CwdWithContext(ctx context.Context) (string, error) {
 	return p.fillFromCwd()
 }
 
 // Parent returns parent Process of the process.
 func (p *Process) Parent() (*Process, error) {
+	return p.ParentWithContext(context.Background())
+}
+
+func (p *Process) ParentWithContext(ctx context.Context) (*Process, error) {
 	err := p.fillFromStatus()
 	if err != nil {
 		return nil, err
@@ -149,6 +192,10 @@ func (p *Process) Parent() (*Process, error) {
 // Z: Zombie W: Wait L: Lock
 // The charactor is same within all supported platforms.
 func (p *Process) Status() (string, error) {
+	return p.StatusWithContext(context.Background())
+}
+
+func (p *Process) StatusWithContext(ctx context.Context) (string, error) {
 	err := p.fillFromStatus()
 	if err != nil {
 		return "", err
@@ -158,6 +205,10 @@ func (p *Process) Status() (string, error) {
 
 // Uids returns user ids of the process as a slice of the int
 func (p *Process) Uids() ([]int32, error) {
+	return p.UidsWithContext(context.Background())
+}
+
+func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
 	err := p.fillFromStatus()
 	if err != nil {
 		return []int32{}, err
@@ -167,6 +218,10 @@ func (p *Process) Uids() ([]int32, error) {
 
 // Gids returns group ids of the process as a slice of the int
 func (p *Process) Gids() ([]int32, error) {
+	return p.GidsWithContext(context.Background())
+}
+
+func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
 	err := p.fillFromStatus()
 	if err != nil {
 		return []int32{}, err
@@ -176,17 +231,30 @@ func (p *Process) Gids() ([]int32, error) {
 
 // Terminal returns a terminal which is associated with the process.
 func (p *Process) Terminal() (string, error) {
-	terminal, _, _, _, _, err := p.fillFromStat()
+	return p.TerminalWithContext(context.Background())
+}
+
+func (p *Process) TerminalWithContext(ctx context.Context) (string, error) {
+	t, _, _, _, _, _, err := p.fillFromStat()
 	if err != nil {
 		return "", err
 	}
+	termmap, err := getTerminalMap()
+	if err != nil {
+		return "", err
+	}
+	terminal := termmap[t]
 	return terminal, nil
 }
 
 // Nice returns a nice value (priority).
 // Notice: gopsutil can not set nice value.
 func (p *Process) Nice() (int32, error) {
-	_, _, _, _, nice, err := p.fillFromStat()
+	return p.NiceWithContext(context.Background())
+}
+
+func (p *Process) NiceWithContext(ctx context.Context) (int32, error) {
+	_, _, _, _, _, nice, err := p.fillFromStat()
 	if err != nil {
 		return 0, err
 	}
@@ -195,21 +263,99 @@ func (p *Process) Nice() (int32, error) {
 
 // IOnice returns process I/O nice value (priority).
 func (p *Process) IOnice() (int32, error) {
+	return p.IOniceWithContext(context.Background())
+}
+
+func (p *Process) IOniceWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 
 // Rlimit returns Resource Limits.
 func (p *Process) Rlimit() ([]RlimitStat, error) {
-	return p.fillFromLimits()
+	return p.RlimitWithContext(context.Background())
+}
+
+func (p *Process) RlimitWithContext(ctx context.Context) ([]RlimitStat, error) {
+	return p.RlimitUsage(false)
+}
+
+// RlimitUsage returns Resource Limits.
+// If gatherUsed is true, the currently used value will be gathered and added
+// to the resulting RlimitStat.
+func (p *Process) RlimitUsage(gatherUsed bool) ([]RlimitStat, error) {
+	return p.RlimitUsageWithContext(context.Background(), gatherUsed)
+}
+
+func (p *Process) RlimitUsageWithContext(ctx context.Context, gatherUsed bool) ([]RlimitStat, error) {
+	rlimits, err := p.fillFromLimits()
+	if !gatherUsed || err != nil {
+		return rlimits, err
+	}
+
+	_, _, _, _, rtprio, nice, err := p.fillFromStat()
+	if err != nil {
+		return nil, err
+	}
+	if err := p.fillFromStatus(); err != nil {
+		return nil, err
+	}
+
+	for i := range rlimits {
+		rs := &rlimits[i]
+		switch rs.Resource {
+		case RLIMIT_CPU:
+			times, err := p.Times()
+			if err != nil {
+				return nil, err
+			}
+			rs.Used = uint64(times.User + times.System)
+		case RLIMIT_DATA:
+			rs.Used = uint64(p.memInfo.Data)
+		case RLIMIT_STACK:
+			rs.Used = uint64(p.memInfo.Stack)
+		case RLIMIT_RSS:
+			rs.Used = uint64(p.memInfo.RSS)
+		case RLIMIT_NOFILE:
+			n, err := p.NumFDs()
+			if err != nil {
+				return nil, err
+			}
+			rs.Used = uint64(n)
+		case RLIMIT_MEMLOCK:
+			rs.Used = uint64(p.memInfo.Locked)
+		case RLIMIT_AS:
+			rs.Used = uint64(p.memInfo.VMS)
+		case RLIMIT_LOCKS:
+			//TODO we can get the used value from /proc/$pid/locks. But linux doesn't enforce it, so not a high priority.
+		case RLIMIT_SIGPENDING:
+			rs.Used = p.sigInfo.PendingProcess
+		case RLIMIT_NICE:
+			// 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.
+			// So effectively: if rs.Soft == 0 { rs.Soft = rs.Used }
+			rs.Used = uint64(nice)
+		case RLIMIT_RTPRIO:
+			rs.Used = uint64(rtprio)
+		}
+	}
+
+	return rlimits, err
 }
 
 // IOCounters returns IO Counters.
 func (p *Process) IOCounters() (*IOCountersStat, error) {
+	return p.IOCountersWithContext(context.Background())
+}
+
+func (p *Process) IOCountersWithContext(ctx context.Context) (*IOCountersStat, error) {
 	return p.fillFromIO()
 }
 
 // NumCtxSwitches returns the number of the context switches of the process.
 func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
+	return p.NumCtxSwitchesWithContext(context.Background())
+}
+
+func (p *Process) NumCtxSwitchesWithContext(ctx context.Context) (*NumCtxSwitchesStat, error) {
 	err := p.fillFromStatus()
 	if err != nil {
 		return nil, err
@@ -219,12 +365,20 @@ func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
 
 // NumFDs returns the number of File Descriptors used by the process.
 func (p *Process) NumFDs() (int32, error) {
+	return p.NumFDsWithContext(context.Background())
+}
+
+func (p *Process) NumFDsWithContext(ctx context.Context) (int32, error) {
 	_, fnames, err := p.fillFromfdList()
 	return int32(len(fnames)), err
 }
 
 // NumThreads returns the number of threads used by the process.
 func (p *Process) NumThreads() (int32, error) {
+	return p.NumThreadsWithContext(context.Background())
+}
+
+func (p *Process) NumThreadsWithContext(ctx context.Context) (int32, error) {
 	err := p.fillFromStatus()
 	if err != nil {
 		return 0, err
@@ -232,17 +386,37 @@ func (p *Process) NumThreads() (int32, error) {
 	return p.numThreads, nil
 }
 
-// Threads returns a map of threads
+func (p *Process) Threads() (map[int32]*cpu.TimesStat, error) {
-//
+	return p.ThreadsWithContext(context.Background())
-// Notice: Not implemented yet. always returns empty map.
+}
-func (p *Process) Threads() (map[string]string, error) {
+
-	ret := make(map[string]string, 0)
+func (p *Process) ThreadsWithContext(ctx context.Context) (map[int32]*cpu.TimesStat, error) {
+	ret := make(map[int32]*cpu.TimesStat)
+	taskPath := common.HostProc(strconv.Itoa(int(p.Pid)), "task")
+
+	tids, err := readPidsFromDir(taskPath)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, tid := range tids {
+		_, _, cpuTimes, _, _, _, err := p.fillFromTIDStat(tid)
+		if err != nil {
+			return nil, err
+		}
+		ret[tid] = cpuTimes
+	}
+
 	return ret, nil
 }
 
 // Times returns CPU times of the process.
 func (p *Process) Times() (*cpu.TimesStat, error) {
-	_, _, cpuTimes, _, _, err := p.fillFromStat()
+	return p.TimesWithContext(context.Background())
+}
+
+func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error) {
+	_, _, cpuTimes, _, _, _, err := p.fillFromStat()
 	if err != nil {
 		return nil, err
 	}
@@ -253,11 +427,19 @@ func (p *Process) Times() (*cpu.TimesStat, error) {
 //
 // Notice: Not implemented yet.
 func (p *Process) CPUAffinity() ([]int32, error) {
+	return p.CPUAffinityWithContext(context.Background())
+}
+
+func (p *Process) CPUAffinityWithContext(ctx context.Context) ([]int32, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 // MemoryInfo returns platform in-dependend memory information, such as RSS, VMS and Swap
 func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
+	return p.MemoryInfoWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoWithContext(ctx context.Context) (*MemoryInfoStat, error) {
 	meminfo, _, err := p.fillFromStatm()
 	if err != nil {
 		return nil, err
@@ -267,6 +449,10 @@ func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
 
 // MemoryInfoEx returns platform dependend memory information.
 func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
+	return p.MemoryInfoExWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoExWithContext(ctx context.Context) (*MemoryInfoExStat, error) {
 	_, memInfoEx, err := p.fillFromStatm()
 	if err != nil {
 		return nil, err
@@ -276,6 +462,10 @@ func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
 
 // Children returns a slice of Process of the process.
 func (p *Process) Children() ([]*Process, error) {
+	return p.ChildrenWithContext(context.Background())
+}
+
+func (p *Process) ChildrenWithContext(ctx context.Context) ([]*Process, error) {
 	pids, err := common.CallPgrep(invoke, p.Pid)
 	if err != nil {
 		if pids == nil || len(pids) == 0 {
@@ -297,6 +487,10 @@ func (p *Process) Children() ([]*Process, error) {
 // OpenFiles returns a slice of OpenFilesStat opend by the process.
 // OpenFilesStat includes a file path and file descriptor.
 func (p *Process) OpenFiles() ([]OpenFilesStat, error) {
+	return p.OpenFilesWithContext(context.Background())
+}
+
+func (p *Process) OpenFilesWithContext(ctx context.Context) ([]OpenFilesStat, error) {
 	_, ofs, err := p.fillFromfd()
 	if err != nil {
 		return nil, err
@@ -312,11 +506,19 @@ func (p *Process) OpenFiles() ([]OpenFilesStat, error) {
 // Connections returns a slice of net.ConnectionStat used by the process.
 // This returns all kind of the connection. This measn TCP, UDP or UNIX.
 func (p *Process) Connections() ([]net.ConnectionStat, error) {
+	return p.ConnectionsWithContext(context.Background())
+}
+
+func (p *Process) ConnectionsWithContext(ctx context.Context) ([]net.ConnectionStat, error) {
 	return net.ConnectionsPid("all", p.Pid)
 }
 
 // NetIOCounters returns NetIOCounters of the process.
 func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
+	return p.NetIOCountersWithContext(context.Background(), pernic)
+}
+
+func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]net.IOCountersStat, error) {
 	filename := common.HostProc(strconv.Itoa(int(p.Pid)), "net/dev")
 	return net.IOCountersByFile(pernic, filename)
 }
@@ -324,11 +526,19 @@ func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
 // 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)
+}
+
+func (p *Process) MemoryMapsWithContext(ctx context.Context, grouped bool) (*[]MemoryMapsStat, error) {
 	pid := p.Pid
 	var ret []MemoryMapsStat
 	smapsPath := common.HostProc(strconv.Itoa(int(pid)), "smaps")
@@ -423,6 +633,10 @@ func limitToInt(val string) (int32, error) {
 
 // Get num_fds from /proc/(pid)/limits
 func (p *Process) fillFromLimits() ([]RlimitStat, error) {
+	return p.fillFromLimitsWithContext(context.Background())
+}
+
+func (p *Process) fillFromLimitsWithContext(ctx context.Context) ([]RlimitStat, error) {
 	pid := p.Pid
 	limitsFile := common.HostProc(strconv.Itoa(int(pid)), "limits")
 	d, err := os.Open(limitsFile)
@@ -516,6 +730,10 @@ func (p *Process) fillFromLimits() ([]RlimitStat, error) {
 
 // Get list of /proc/(pid)/fd files
 func (p *Process) fillFromfdList() (string, []string, error) {
+	return p.fillFromfdListWithContext(context.Background())
+}
+
+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)
@@ -529,6 +747,10 @@ func (p *Process) fillFromfdList() (string, []string, error) {
 
 // Get num_fds from /proc/(pid)/fd
 func (p *Process) fillFromfd() (int32, []*OpenFilesStat, error) {
+	return p.fillFromfdWithContext(context.Background())
+}
+
+func (p *Process) fillFromfdWithContext(ctx context.Context) (int32, []*OpenFilesStat, error) {
 	statPath, fnames, err := p.fillFromfdList()
 	if err != nil {
 		return 0, nil, err
@@ -558,6 +780,10 @@ func (p *Process) fillFromfd() (int32, []*OpenFilesStat, error) {
 
 // Get cwd from /proc/(pid)/cwd
 func (p *Process) fillFromCwd() (string, error) {
+	return p.fillFromCwdWithContext(context.Background())
+}
+
+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)
@@ -569,6 +795,10 @@ func (p *Process) fillFromCwd() (string, error) {
 
 // Get exe from /proc/(pid)/exe
 func (p *Process) fillFromExe() (string, error) {
+	return p.fillFromExeWithContext(context.Background())
+}
+
+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)
@@ -580,6 +810,10 @@ func (p *Process) fillFromExe() (string, error) {
 
 // Get cmdline from /proc/(pid)/cmdline
 func (p *Process) fillFromCmdline() (string, error) {
+	return p.fillFromCmdlineWithContext(context.Background())
+}
+
+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)
@@ -597,6 +831,10 @@ func (p *Process) fillFromCmdline() (string, error) {
 }
 
 func (p *Process) fillSliceFromCmdline() ([]string, error) {
+	return p.fillSliceFromCmdlineWithContext(context.Background())
+}
+
+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)
@@ -620,6 +858,10 @@ func (p *Process) fillSliceFromCmdline() ([]string, error) {
 
 // Get IO status from /proc/(pid)/io
 func (p *Process) fillFromIO() (*IOCountersStat, error) {
+	return p.fillFromIOWithContext(context.Background())
+}
+
+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)
@@ -659,6 +901,10 @@ func (p *Process) fillFromIO() (*IOCountersStat, error) {
 
 // Get memory info from /proc/(pid)/statm
 func (p *Process) fillFromStatm() (*MemoryInfoStat, *MemoryInfoExStat, error) {
+	return p.fillFromStatmWithContext(context.Background())
+}
+
+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)
@@ -711,6 +957,10 @@ func (p *Process) fillFromStatm() (*MemoryInfoStat, *MemoryInfoExStat, error) {
 
 // Get various status from /proc/(pid)/status
 func (p *Process) fillFromStatus() error {
+	return p.fillFromStatusWithContext(context.Background())
+}
+
+func (p *Process) fillFromStatusWithContext(ctx context.Context) error {
 	pid := p.Pid
 	statPath := common.HostProc(strconv.Itoa(int(pid)), "status")
 	contents, err := ioutil.ReadFile(statPath)
@@ -720,6 +970,7 @@ func (p *Process) fillFromStatus() error {
 	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 {
@@ -749,6 +1000,12 @@ func (p *Process) fillFromStatus() error {
 				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") {
@@ -806,18 +1063,80 @@ func (p *Process) fillFromStatus() error {
 				return err
 			}
 			p.memInfo.Swap = 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) fillFromStat() (string, int32, *cpu.TimesStat, int64, int32, error) {
+func (p *Process) fillFromTIDStat(tid int32) (uint64, int32, *cpu.TimesStat, int64, uint32, int32, error) {
+	return p.fillFromTIDStatWithContext(context.Background(), tid)
+}
+
+func (p *Process) fillFromTIDStatWithContext(ctx context.Context, tid int32) (uint64, int32, *cpu.TimesStat, int64, uint32, int32, error) {
 	pid := p.Pid
-	statPath := common.HostProc(strconv.Itoa(int(pid)), "stat")
+	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, nil, 0, 0, err
+		return 0, 0, nil, 0, 0, 0, err
 	}
 	fields := strings.Fields(string(contents))
 
@@ -826,28 +1145,23 @@ func (p *Process) fillFromStat() (string, int32, *cpu.TimesStat, int64, int32, e
 		i++
 	}
 
-	termmap, err := getTerminalMap()
+	terminal, err := strconv.ParseUint(fields[i+5], 10, 64)
-	terminal := ""
-	if err == nil {
-		t, err := strconv.ParseUint(fields[i+5], 10, 64)
 	if err != nil {
-			return "", 0, nil, 0, 0, err
+		return 0, 0, nil, 0, 0, 0, err
-		}
-		terminal = termmap[t]
 	}
 
 	ppid, err := strconv.ParseInt(fields[i+2], 10, 32)
 	if err != nil {
-		return "", 0, nil, 0, 0, err
+		return 0, 0, nil, 0, 0, 0, err
 	}
 	utime, err := strconv.ParseFloat(fields[i+12], 64)
 	if err != nil {
-		return "", 0, nil, 0, 0, err
+		return 0, 0, nil, 0, 0, 0, err
 	}
 
 	stime, err := strconv.ParseFloat(fields[i+13], 64)
 	if err != nil {
-		return "", 0, nil, 0, 0, err
+		return 0, 0, nil, 0, 0, 0, err
 	}
 
 	cpuTimes := &cpu.TimesStat{
@@ -859,24 +1173,72 @@ func (p *Process) fillFromStat() (string, int32, *cpu.TimesStat, int64, int32, e
 	bootTime, _ := host.BootTime()
 	t, err := strconv.ParseUint(fields[i+20], 10, 64)
 	if err != nil {
-		return "", 0, nil, 0, 0, err
+		return 0, 0, nil, 0, 0, 0, err
 	}
 	ctime := (t / uint64(ClockTicks)) + uint64(bootTime)
 	createTime := int64(ctime * 1000)
 
+	rtpriority, err := strconv.ParseInt(fields[i+16], 10, 32)
+	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?
 
-	return terminal, int32(ppid), cpuTimes, createTime, nice, nil
+	return terminal, int32(ppid), cpuTimes, createTime, uint32(rtpriority), nice, nil
+}
+
+func (p *Process) fillFromStat() (uint64, int32, *cpu.TimesStat, int64, uint32, int32, error) {
+	return p.fillFromStatWithContext(context.Background())
+}
+
+func (p *Process) fillFromStatWithContext(ctx context.Context) (uint64, int32, *cpu.TimesStat, int64, uint32, int32, error) {
+	return p.fillFromTIDStat(-1)
 }
 
 // Pids returns a slice of process ID list which are running now.
 func Pids() ([]int32, error) {
+	return PidsWithContext(context.Background())
+}
+
+func PidsWithContext(ctx context.Context) ([]int32, error) {
+	return readPidsFromDir(common.HostProc())
+}
+
+// Process returns a slice of pointers to Process structs for all
+// currently running processes.
+func Processes() ([]*Process, error) {
+	return ProcessesWithContext(context.Background())
+}
+
+func ProcessesWithContext(ctx context.Context) ([]*Process, error) {
+	out := []*Process{}
+
+	pids, err := Pids()
+	if err != nil {
+		return out, err
+	}
+
+	for _, pid := range pids {
+		p, err := NewProcess(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(common.HostProc())
+	d, err := os.Open(path)
 	if err != nil {
 		return nil, err
 	}

vendor/github.com/shirou/gopsutil/process/process_openbsd.go

@@ -15,6 +15,7 @@ import (
 	net "github.com/shirou/gopsutil/net"
 	"golang.org/x/sys/unix"
 )
+import "context"
 
 // MemoryInfoExStat is different between OSes
 type MemoryInfoExStat struct {
@@ -24,8 +25,12 @@ type MemoryMapsStat struct {
 }
 
 func Pids() ([]int32, error) {
+	return PidsWithContext(context.Background())
+}
+
+func PidsWithContext(ctx context.Context) ([]int32, error) {
 	var ret []int32
-	procs, err := processes()
+	procs, err := Processes()
 	if err != nil {
 		return ret, nil
 	}
@@ -38,6 +43,10 @@ func Pids() ([]int32, error) {
 }
 
 func (p *Process) Ppid() (int32, error) {
+	return p.PpidWithContext(context.Background())
+}
+
+func (p *Process) PpidWithContext(ctx context.Context) (int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return 0, err
@@ -46,6 +55,10 @@ func (p *Process) Ppid() (int32, error) {
 	return k.Ppid, nil
 }
 func (p *Process) Name() (string, error) {
+	return p.NameWithContext(context.Background())
+}
+
+func (p *Process) NameWithContext(ctx context.Context) (string, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return "", err
@@ -53,11 +66,22 @@ func (p *Process) Name() (string, error) {
 
 	return common.IntToString(k.Comm[:]), nil
 }
+func (p *Process) Tgid() (int32, error) {
+	return 0, common.ErrNotImplementedError
+}
 func (p *Process) Exe() (string, error) {
+	return p.ExeWithContext(context.Background())
+}
+
+func (p *Process) ExeWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 
 func (p *Process) CmdlineSlice() ([]string, error) {
+	return p.CmdlineSliceWithContext(context.Background())
+}
+
+func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error) {
 	mib := []int32{CTLKern, KernProcArgs, p.Pid, KernProcArgv}
 	buf, _, err := common.CallSyscall(mib)
 
@@ -81,6 +105,10 @@ func (p *Process) CmdlineSlice() ([]string, error) {
 }
 
 func (p *Process) Cmdline() (string, error) {
+	return p.CmdlineWithContext(context.Background())
+}
+
+func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
 	argv, err := p.CmdlineSlice()
 	if err != nil {
 		return "", err
@@ -89,15 +117,31 @@ func (p *Process) Cmdline() (string, error) {
 }
 
 func (p *Process) CreateTime() (int64, error) {
+	return p.CreateTimeWithContext(context.Background())
+}
+
+func (p *Process) CreateTimeWithContext(ctx context.Context) (int64, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Cwd() (string, error) {
+	return p.CwdWithContext(context.Background())
+}
+
+func (p *Process) CwdWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Parent() (*Process, error) {
+	return p.ParentWithContext(context.Background())
+}
+
+func (p *Process) ParentWithContext(ctx context.Context) (*Process, error) {
 	return p, common.ErrNotImplementedError
 }
 func (p *Process) Status() (string, error) {
+	return p.StatusWithContext(context.Background())
+}
+
+func (p *Process) StatusWithContext(ctx context.Context) (string, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return "", err
@@ -119,6 +163,10 @@ func (p *Process) Status() (string, error) {
 	return s, nil
 }
 func (p *Process) Uids() ([]int32, error) {
+	return p.UidsWithContext(context.Background())
+}
+
+func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -131,6 +179,10 @@ func (p *Process) Uids() ([]int32, error) {
 	return uids, nil
 }
 func (p *Process) Gids() ([]int32, error) {
+	return p.GidsWithContext(context.Background())
+}
+
+func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -142,6 +194,10 @@ func (p *Process) Gids() ([]int32, error) {
 	return gids, nil
 }
 func (p *Process) Terminal() (string, error) {
+	return p.TerminalWithContext(context.Background())
+}
+
+func (p *Process) TerminalWithContext(ctx context.Context) (string, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return "", err
@@ -157,6 +213,10 @@ func (p *Process) Terminal() (string, error) {
 	return termmap[ttyNr], nil
 }
 func (p *Process) Nice() (int32, error) {
+	return p.NiceWithContext(context.Background())
+}
+
+func (p *Process) NiceWithContext(ctx context.Context) (int32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return 0, err
@@ -164,13 +224,33 @@ func (p *Process) Nice() (int32, error) {
 	return int32(k.Nice), nil
 }
 func (p *Process) IOnice() (int32, error) {
+	return p.IOniceWithContext(context.Background())
+}
+
+func (p *Process) IOniceWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Rlimit() ([]RlimitStat, error) {
+	return p.RlimitWithContext(context.Background())
+}
+
+func (p *Process) RlimitWithContext(ctx context.Context) ([]RlimitStat, error) {
+	var rlimit []RlimitStat
+	return rlimit, common.ErrNotImplementedError
+}
+func (p *Process) RlimitUsage(gatherUsed bool) ([]RlimitStat, error) {
+	return p.RlimitUsageWithContext(context.Background(), gatherUsed)
+}
+
+func (p *Process) RlimitUsageWithContext(ctx context.Context, gatherUsed bool) ([]RlimitStat, error) {
 	var rlimit []RlimitStat
 	return rlimit, common.ErrNotImplementedError
 }
 func (p *Process) IOCounters() (*IOCountersStat, error) {
+	return p.IOCountersWithContext(context.Background())
+}
+
+func (p *Process) IOCountersWithContext(ctx context.Context) (*IOCountersStat, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -181,20 +261,40 @@ func (p *Process) IOCounters() (*IOCountersStat, error) {
 	}, nil
 }
 func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
+	return p.NumCtxSwitchesWithContext(context.Background())
+}
+
+func (p *Process) NumCtxSwitchesWithContext(ctx context.Context) (*NumCtxSwitchesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) NumFDs() (int32, error) {
+	return p.NumFDsWithContext(context.Background())
+}
+
+func (p *Process) NumFDsWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) NumThreads() (int32, error) {
+	return p.NumThreadsWithContext(context.Background())
+}
+
+func (p *Process) NumThreadsWithContext(ctx context.Context) (int32, error) {
 	/* not supported, just return 1 */
 	return 1, nil
 }
-func (p *Process) Threads() (map[string]string, error) {
+func (p *Process) Threads() (map[int32]*cpu.TimesStat, error) {
-	ret := make(map[string]string, 0)
+	return p.ThreadsWithContext(context.Background())
+}
+
+func (p *Process) ThreadsWithContext(ctx context.Context) (map[int32]*cpu.TimesStat, error) {
+	ret := make(map[int32]*cpu.TimesStat)
 	return ret, common.ErrNotImplementedError
 }
 func (p *Process) Times() (*cpu.TimesStat, error) {
+	return p.TimesWithContext(context.Background())
+}
+
+func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -206,9 +306,17 @@ func (p *Process) Times() (*cpu.TimesStat, error) {
 	}, nil
 }
 func (p *Process) CPUAffinity() ([]int32, error) {
+	return p.CPUAffinityWithContext(context.Background())
+}
+
+func (p *Process) CPUAffinityWithContext(ctx context.Context) ([]int32, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
+	return p.MemoryInfoWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoWithContext(ctx context.Context) (*MemoryInfoStat, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
@@ -225,10 +333,18 @@ func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
 	}, nil
 }
 func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
+	return p.MemoryInfoExWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoExWithContext(ctx context.Context) (*MemoryInfoExStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) Children() ([]*Process, error) {
+	return p.ChildrenWithContext(context.Background())
+}
+
+func (p *Process) ChildrenWithContext(ctx context.Context) ([]*Process, error) {
 	pids, err := common.CallPgrep(invoke, p.Pid)
 	if err != nil {
 		return nil, err
@@ -245,27 +361,51 @@ func (p *Process) Children() ([]*Process, error) {
 }
 
 func (p *Process) OpenFiles() ([]OpenFilesStat, error) {
+	return p.OpenFilesWithContext(context.Background())
+}
+
+func (p *Process) OpenFilesWithContext(ctx context.Context) ([]OpenFilesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) Connections() ([]net.ConnectionStat, error) {
+	return p.ConnectionsWithContext(context.Background())
+}
+
+func (p *Process) ConnectionsWithContext(ctx context.Context) ([]net.ConnectionStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
+	return p.NetIOCountersWithContext(context.Background(), pernic)
+}
+
+func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]net.IOCountersStat, error) {
 	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)
+}
+
+func (p *Process) MemoryMapsWithContext(ctx context.Context, grouped bool) (*[]MemoryMapsStat, error) {
 	var ret []MemoryMapsStat
 	return &ret, common.ErrNotImplementedError
 }
 
-func processes() ([]Process, error) {
+func Processes() ([]*Process, error) {
-	results := make([]Process, 0, 50)
+	return ProcessesWithContext(context.Background())
+}
+
+func ProcessesWithContext(ctx context.Context) ([]*Process, error) {
+	results := []*Process{}
 
 	buf, length, err := CallKernProcSyscall(KernProcAll, 0)
 
@@ -288,7 +428,7 @@ func processes() ([]Process, error) {
 			continue
 		}
 
-		results = append(results, *p)
+		results = append(results, p)
 	}
 
 	return results, nil
@@ -302,6 +442,10 @@ func parseKinfoProc(buf []byte) (KinfoProc, error) {
 }
 
 func (p *Process) getKProc() (*KinfoProc, error) {
+	return p.getKProcWithContext(context.Background())
+}
+
+func (p *Process) getKProcWithContext(ctx context.Context) (*KinfoProc, error) {
 	buf, length, err := CallKernProcSyscall(KernProcPID, p.Pid)
 	if err != nil {
 		return nil, err
@@ -324,6 +468,10 @@ func NewProcess(pid int32) (*Process, error) {
 }
 
 func CallKernProcSyscall(op int32, arg int32) ([]byte, uint64, error) {
+	return CallKernProcSyscallWithContext(context.Background(), op, arg)
+}
+
+func CallKernProcSyscallWithContext(ctx context.Context, op int32, arg int32) ([]byte, uint64, error) {
 	mib := []int32{CTLKern, KernProc, op, arg, sizeOfKinfoProc, 0}
 	mibptr := unsafe.Pointer(&mib[0])
 	miblen := uint64(len(mib))

vendor/github.com/shirou/gopsutil/process/process_posix.go

@@ -3,6 +3,7 @@
 package process
 
 import (
+	"context"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -65,6 +66,10 @@ func getTerminalMap() (map[uint64]string, error) {
 // SendSignal sends a unix.Signal to the process.
 // Currently, SIGSTOP, SIGCONT, SIGTERM and SIGKILL are supported.
 func (p *Process) SendSignal(sig syscall.Signal) error {
+	return p.SendSignalWithContext(context.Background(), sig)
+}
+
+func (p *Process) SendSignalWithContext(ctx context.Context, sig syscall.Signal) error {
 	process, err := os.FindProcess(int(p.Pid))
 	if err != nil {
 		return err
@@ -80,26 +85,46 @@ func (p *Process) SendSignal(sig syscall.Signal) error {
 
 // Suspend sends SIGSTOP to the process.
 func (p *Process) Suspend() error {
+	return p.SuspendWithContext(context.Background())
+}
+
+func (p *Process) SuspendWithContext(ctx context.Context) error {
 	return p.SendSignal(unix.SIGSTOP)
 }
 
 // Resume sends SIGCONT to the process.
 func (p *Process) Resume() error {
+	return p.ResumeWithContext(context.Background())
+}
+
+func (p *Process) ResumeWithContext(ctx context.Context) error {
 	return p.SendSignal(unix.SIGCONT)
 }
 
 // Terminate sends SIGTERM to the process.
 func (p *Process) Terminate() error {
+	return p.TerminateWithContext(context.Background())
+}
+
+func (p *Process) TerminateWithContext(ctx context.Context) error {
 	return p.SendSignal(unix.SIGTERM)
 }
 
 // Kill sends SIGKILL to the process.
 func (p *Process) Kill() error {
+	return p.KillWithContext(context.Background())
+}
+
+func (p *Process) KillWithContext(ctx context.Context) error {
 	return p.SendSignal(unix.SIGKILL)
 }
 
 // Username returns a username of the process.
 func (p *Process) Username() (string, error) {
+	return p.UsernameWithContext(context.Background())
+}
+
+func (p *Process) UsernameWithContext(ctx context.Context) (string, error) {
 	uids, err := p.Uids()
 	if err != nil {
 		return "", err

vendor/github.com/shirou/gopsutil/process/process_windows.go

@@ -3,7 +3,9 @@
 package process
 
 import (
+	"context"
 	"fmt"
+	"os"
 	"strings"
 	"syscall"
 	"time"
@@ -93,35 +95,57 @@ func init() {
 }
 
 func Pids() ([]int32, error) {
+	return PidsWithContext(context.Background())
+}
+
+func PidsWithContext(ctx context.Context) ([]int32, error) {
+	// inspired by https://gist.github.com/henkman/3083408
+	// and https://github.com/giampaolo/psutil/blob/1c3a15f637521ba5c0031283da39c733fda53e4c/psutil/arch/windows/process_info.c#L315-L329
 	var ret []int32
+	var read uint32 = 0
+	var psSize uint32 = 1024
+	const dwordSize uint32 = 4
 
-	procs, err := processes()
+	for {
-	if err != nil {
+		ps := make([]uint32, psSize)
+		if !w32.EnumProcesses(ps, uint32(len(ps)), &read) {
+			return nil, fmt.Errorf("could not get w32.EnumProcesses")
+		}
+		if uint32(len(ps)) == read { // ps buffer was too small to host every results, retry with a bigger one
+			psSize += 1024
+			continue
+		}
+		for _, pid := range ps[:read/dwordSize] {
+			ret = append(ret, int32(pid))
+		}
 		return ret, nil
+
 	}
 
-	for _, proc := range procs {
-		ret = append(ret, proc.Pid)
-	}
-
-	return ret, nil
 }
 
 func (p *Process) Ppid() (int32, error) {
-	dst, err := GetWin32Proc(p.Pid)
+	return p.PpidWithContext(context.Background())
+}
+
+func (p *Process) PpidWithContext(ctx context.Context) (int32, error) {
+	ppid, _, _, err := getFromSnapProcess(p.Pid)
 	if err != nil {
 		return 0, err
 	}
-
+	return ppid, nil
-	return int32(dst[0].ParentProcessID), nil
 }
 
 func GetWin32Proc(pid int32) ([]Win32_Process, error) {
+	return GetWin32ProcWithContext(context.Background(), pid)
+}
+
+func GetWin32ProcWithContext(ctx context.Context, pid int32) ([]Win32_Process, error) {
 	var dst []Win32_Process
 	query := fmt.Sprintf("WHERE ProcessId = %d", pid)
 	q := wmi.CreateQuery(&dst, query)
-
+	err := common.WMIQueryWithContext(ctx, q, &dst)
-	if err := wmi.Query(q, &dst); err != nil {
+	if err != nil {
 		return []Win32_Process{}, fmt.Errorf("could not get win32Proc: %s", err)
 	}
 
@@ -133,14 +157,26 @@ func GetWin32Proc(pid int32) ([]Win32_Process, error) {
 }
 
 func (p *Process) Name() (string, error) {
-	dst, err := GetWin32Proc(p.Pid)
+	return p.NameWithContext(context.Background())
+}
+
+func (p *Process) NameWithContext(ctx context.Context) (string, error) {
+	_, _, name, err := getFromSnapProcess(p.Pid)
 	if err != nil {
 		return "", fmt.Errorf("could not get Name: %s", err)
 	}
-	return dst[0].Name, nil
+	return name, nil
+}
+
+func (p *Process) Tgid() (int32, error) {
+	return 0, common.ErrNotImplementedError
 }
 
 func (p *Process) Exe() (string, error) {
+	return p.ExeWithContext(context.Background())
+}
+
+func (p *Process) ExeWithContext(ctx context.Context) (string, error) {
 	dst, err := GetWin32Proc(p.Pid)
 	if err != nil {
 		return "", fmt.Errorf("could not get ExecutablePath: %s", err)
@@ -149,6 +185,10 @@ func (p *Process) Exe() (string, error) {
 }
 
 func (p *Process) Cmdline() (string, error) {
+	return p.CmdlineWithContext(context.Background())
+}
+
+func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
 	dst, err := GetWin32Proc(p.Pid)
 	if err != nil {
 		return "", fmt.Errorf("could not get CommandLine: %s", err)
@@ -160,6 +200,10 @@ func (p *Process) Cmdline() (string, error) {
 // element being an argument. This merely returns the CommandLine informations passed
 // to the process split on the 0x20 ASCII character.
 func (p *Process) CmdlineSlice() ([]string, error) {
+	return p.CmdlineSliceWithContext(context.Background())
+}
+
+func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error) {
 	cmdline, err := p.Cmdline()
 	if err != nil {
 		return nil, err
@@ -168,6 +212,10 @@ func (p *Process) CmdlineSlice() ([]string, error) {
 }
 
 func (p *Process) CreateTime() (int64, error) {
+	return p.CreateTimeWithContext(context.Background())
+}
+
+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)
@@ -177,9 +225,17 @@ func (p *Process) CreateTime() (int64, error) {
 }
 
 func (p *Process) Cwd() (string, error) {
+	return p.CwdWithContext(context.Background())
+}
+
+func (p *Process) CwdWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Parent() (*Process, error) {
+	return p.ParentWithContext(context.Background())
+}
+
+func (p *Process) ParentWithContext(ctx context.Context) (*Process, error) {
 	dst, err := GetWin32Proc(p.Pid)
 	if err != nil {
 		return nil, fmt.Errorf("could not get ParentProcessID: %s", err)
@@ -188,9 +244,17 @@ func (p *Process) Parent() (*Process, error) {
 	return NewProcess(int32(dst[0].ParentProcessID))
 }
 func (p *Process) Status() (string, error) {
+	return p.StatusWithContext(context.Background())
+}
+
+func (p *Process) StatusWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 func (p *Process) Username() (string, error) {
+	return p.UsernameWithContext(context.Background())
+}
+
+func (p *Process) UsernameWithContext(ctx context.Context) (string, error) {
 	pid := p.Pid
 	// 0x1000 is PROCESS_QUERY_LIMITED_INFORMATION
 	c, err := syscall.OpenProcess(0x1000, false, uint32(pid))
@@ -212,20 +276,36 @@ func (p *Process) Username() (string, error) {
 }
 
 func (p *Process) Uids() ([]int32, error) {
+	return p.UidsWithContext(context.Background())
+}
+
+func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
 	var uids []int32
 
 	return uids, common.ErrNotImplementedError
 }
 func (p *Process) Gids() ([]int32, error) {
+	return p.GidsWithContext(context.Background())
+}
+
+func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
 	var gids []int32
 	return gids, common.ErrNotImplementedError
 }
 func (p *Process) Terminal() (string, error) {
+	return p.TerminalWithContext(context.Background())
+}
+
+func (p *Process) TerminalWithContext(ctx context.Context) (string, error) {
 	return "", common.ErrNotImplementedError
 }
 
 // Nice returnes priority in Windows
 func (p *Process) Nice() (int32, error) {
+	return p.NiceWithContext(context.Background())
+}
+
+func (p *Process) NiceWithContext(ctx context.Context) (int32, error) {
 	dst, err := GetWin32Proc(p.Pid)
 	if err != nil {
 		return 0, fmt.Errorf("could not get Priority: %s", err)
@@ -233,15 +313,36 @@ func (p *Process) Nice() (int32, error) {
 	return int32(dst[0].Priority), nil
 }
 func (p *Process) IOnice() (int32, error) {
+	return p.IOniceWithContext(context.Background())
+}
+
+func (p *Process) IOniceWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) Rlimit() ([]RlimitStat, error) {
+	return p.RlimitWithContext(context.Background())
+}
+
+func (p *Process) RlimitWithContext(ctx context.Context) ([]RlimitStat, error) {
+	var rlimit []RlimitStat
+
+	return rlimit, common.ErrNotImplementedError
+}
+func (p *Process) RlimitUsage(gatherUsed bool) ([]RlimitStat, error) {
+	return p.RlimitUsageWithContext(context.Background(), gatherUsed)
+}
+
+func (p *Process) RlimitUsageWithContext(ctx context.Context, gatherUsed bool) ([]RlimitStat, error) {
 	var rlimit []RlimitStat
 
 	return rlimit, common.ErrNotImplementedError
 }
 
 func (p *Process) IOCounters() (*IOCountersStat, error) {
+	return p.IOCountersWithContext(context.Background())
+}
+
+func (p *Process) IOCountersWithContext(ctx context.Context) (*IOCountersStat, error) {
 	dst, err := GetWin32Proc(p.Pid)
 	if err != nil || len(dst) == 0 {
 		return nil, fmt.Errorf("could not get Win32Proc: %s", err)
@@ -256,29 +357,77 @@ func (p *Process) IOCounters() (*IOCountersStat, error) {
 	return ret, nil
 }
 func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
+	return p.NumCtxSwitchesWithContext(context.Background())
+}
+
+func (p *Process) NumCtxSwitchesWithContext(ctx context.Context) (*NumCtxSwitchesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) NumFDs() (int32, error) {
+	return p.NumFDsWithContext(context.Background())
+}
+
+func (p *Process) NumFDsWithContext(ctx context.Context) (int32, error) {
 	return 0, common.ErrNotImplementedError
 }
 func (p *Process) NumThreads() (int32, error) {
+	return p.NumThreadsWithContext(context.Background())
+}
+
+func (p *Process) NumThreadsWithContext(ctx context.Context) (int32, error) {
 	dst, err := GetWin32Proc(p.Pid)
 	if err != nil {
 		return 0, fmt.Errorf("could not get ThreadCount: %s", err)
 	}
 	return int32(dst[0].ThreadCount), nil
 }
-func (p *Process) Threads() (map[string]string, error) {
+func (p *Process) Threads() (map[int32]*cpu.TimesStat, error) {
-	ret := make(map[string]string, 0)
+	return p.ThreadsWithContext(context.Background())
+}
+
+func (p *Process) ThreadsWithContext(ctx context.Context) (map[int32]*cpu.TimesStat, error) {
+	ret := make(map[int32]*cpu.TimesStat)
 	return ret, common.ErrNotImplementedError
 }
 func (p *Process) Times() (*cpu.TimesStat, error) {
-	return nil, common.ErrNotImplementedError
+	return p.TimesWithContext(context.Background())
+}
+
+func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error) {
+	sysTimes, err := getProcessCPUTimes(p.Pid)
+	if err != nil {
+		return nil, err
+	}
+
+	// User and kernel times are represented as a FILETIME structure
+	// wich contains a 64-bit value representing the number of
+	// 100-nanosecond intervals since January 1, 1601 (UTC):
+	// http://msdn.microsoft.com/en-us/library/ms724284(VS.85).aspx
+	// To convert it into a float representing the seconds that the
+	// process has executed in user/kernel mode I borrowed the code
+	// below from psutil's _psutil_windows.c, and in turn from Python's
+	// Modules/posixmodule.c
+
+	user := float64(sysTimes.UserTime.HighDateTime)*429.4967296 + float64(sysTimes.UserTime.LowDateTime)*1e-7
+	kernel := float64(sysTimes.KernelTime.HighDateTime)*429.4967296 + float64(sysTimes.KernelTime.LowDateTime)*1e-7
+
+	return &cpu.TimesStat{
+		User:   user,
+		System: kernel,
+	}, nil
 }
 func (p *Process) CPUAffinity() ([]int32, error) {
+	return p.CPUAffinityWithContext(context.Background())
+}
+
+func (p *Process) CPUAffinityWithContext(ctx context.Context) ([]int32, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
+	return p.MemoryInfoWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoWithContext(ctx context.Context) (*MemoryInfoStat, error) {
 	mem, err := getMemoryInfo(p.Pid)
 	if err != nil {
 		return nil, err
@@ -292,46 +441,74 @@ func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
 	return ret, nil
 }
 func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
+	return p.MemoryInfoExWithContext(context.Background())
+}
+
+func (p *Process) MemoryInfoExWithContext(ctx context.Context) (*MemoryInfoExStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) Children() ([]*Process, error) {
-	procs, err := processes()
+	return p.ChildrenWithContext(context.Background())
+}
+
+func (p *Process) ChildrenWithContext(ctx context.Context) ([]*Process, error) {
+	var dst []Win32_Process
+	query := wmi.CreateQuery(&dst, fmt.Sprintf("Where ParentProcessId = %d", p.Pid))
+	err := common.WMIQueryWithContext(ctx, query, &dst)
 	if err != nil {
 		return nil, err
 	}
-	out := []*Process{}
 
-	for _, proc := range procs {
+	out := []*Process{}
-		parent, err := proc.Parent()
+	for _, proc := range dst {
+		p, err := NewProcess(int32(proc.ProcessID))
 		if err != nil {
 			continue
 		}
+		out = append(out, p)
+	}
 
-		if parent.Pid == p.Pid {
-			out = append(out, proc)
-		}
-	}
 	return out, nil
 }
 
 func (p *Process) OpenFiles() ([]OpenFilesStat, error) {
+	return p.OpenFilesWithContext(context.Background())
+}
+
+func (p *Process) OpenFilesWithContext(ctx context.Context) ([]OpenFilesStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) Connections() ([]net.ConnectionStat, error) {
+	return p.ConnectionsWithContext(context.Background())
+}
+
+func (p *Process) ConnectionsWithContext(ctx context.Context) ([]net.ConnectionStat, error) {
 	return nil, common.ErrNotImplementedError
 }
 
 func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
+	return p.NetIOCountersWithContext(context.Background(), pernic)
+}
+
+func (p *Process) NetIOCountersWithContext(ctx context.Context, pernic bool) ([]net.IOCountersStat, error) {
 	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)
+}
+
+func (p *Process) MemoryMapsWithContext(ctx context.Context, grouped bool) (*[]MemoryMapsStat, error) {
 	var ret []MemoryMapsStat
 	return &ret, common.ErrNotImplementedError
 }
@@ -343,17 +520,33 @@ func NewProcess(pid int32) (*Process, error) {
 }
 
 func (p *Process) SendSignal(sig windows.Signal) error {
+	return p.SendSignalWithContext(context.Background(), sig)
+}
+
+func (p *Process) SendSignalWithContext(ctx context.Context, sig windows.Signal) error {
 	return common.ErrNotImplementedError
 }
 
 func (p *Process) Suspend() error {
+	return p.SuspendWithContext(context.Background())
+}
+
+func (p *Process) SuspendWithContext(ctx context.Context) error {
 	return common.ErrNotImplementedError
 }
 func (p *Process) Resume() error {
+	return p.ResumeWithContext(context.Background())
+}
+
+func (p *Process) ResumeWithContext(ctx context.Context) error {
 	return common.ErrNotImplementedError
 }
 
 func (p *Process) Terminate() error {
+	return p.TerminateWithContext(context.Background())
+}
+
+func (p *Process) TerminateWithContext(ctx context.Context) error {
 	// PROCESS_TERMINATE = 0x0001
 	proc := w32.OpenProcess(0x0001, false, uint32(p.Pid))
 	ret := w32.TerminateProcess(proc, 0)
@@ -367,10 +560,15 @@ func (p *Process) Terminate() error {
 }
 
 func (p *Process) Kill() error {
-	return common.ErrNotImplementedError
+	return p.KillWithContext(context.Background())
 }
 
-func (p *Process) getFromSnapProcess(pid int32) (int32, int32, string, error) {
+func (p *Process) KillWithContext(ctx context.Context) error {
+	process := os.Process{Pid: int(p.Pid)}
+	return process.Kill()
+}
+
+func getFromSnapProcess(pid int32) (int32, int32, string, error) {
 	snap := w32.CreateToolhelp32Snapshot(w32.TH32CS_SNAPPROCESS, uint32(pid))
 	if snap == 0 {
 		return 0, 0, "", windows.GetLastError()
@@ -397,20 +595,19 @@ func (p *Process) getFromSnapProcess(pid int32) (int32, int32, string, error) {
 }
 
 // Get processes
-func processes() ([]*Process, error) {
+func Processes() ([]*Process, error) {
-	var dst []Win32_Process
+	return ProcessesWithContext(context.Background())
-	q := wmi.CreateQuery(&dst, "")
-	err := wmi.Query(q, &dst)
-	if err != nil {
-		return []*Process{}, err
 }
-	if len(dst) == 0 {
+
-		return []*Process{}, fmt.Errorf("could not get Process")
+func ProcessesWithContext(ctx context.Context) ([]*Process, error) {
+	pids, err := Pids()
+	if err != nil {
+		return []*Process{}, fmt.Errorf("could not get Processes %s", err)
 	}
 
 	results := []*Process{}
-	for _, proc := range dst {
+	for _, pid := range pids {
-		p, err := NewProcess(int32(proc.ProcessID))
+		p, err := NewProcess(int32(pid))
 		if err != nil {
 			continue
 		}
@@ -480,3 +677,31 @@ func getProcessMemoryInfo(h windows.Handle, mem *PROCESS_MEMORY_COUNTERS) (err e
 	}
 	return
 }
+
+type SYSTEM_TIMES struct {
+	CreateTime syscall.Filetime
+	ExitTime   syscall.Filetime
+	KernelTime syscall.Filetime
+	UserTime   syscall.Filetime
+}
+
+func getProcessCPUTimes(pid int32) (SYSTEM_TIMES, error) {
+	var times SYSTEM_TIMES
+
+	// PROCESS_QUERY_LIMITED_INFORMATION is 0x1000
+	h, err := windows.OpenProcess(0x1000, false, uint32(pid))
+	if err != nil {
+		return times, err
+	}
+	defer windows.CloseHandle(h)
+
+	err = syscall.GetProcessTimes(
+		syscall.Handle(h),
+		&times.CreateTime,
+		&times.ExitTime,
+		&times.KernelTime,
+		&times.UserTime,
+	)
+
+	return times, err
+}

vendor/github.com/shirou/gopsutil/process/types_darwin.go

@@ -1,160 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Hand Writing
-// - all pointer in ExternProc to uint64
-
-// +build ignore
-
-/*
-Input to cgo -godefs.
-*/
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-// +godefs map struct_ [16]byte /* in6_addr */
-
-package process
-
-/*
-#define __DARWIN_UNIX03 0
-#define KERNEL
-#define _DARWIN_USE_64_BIT_INODE
-#include <dirent.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <termios.h>
-#include <unistd.h>
-#include <mach/mach.h>
-#include <mach/message.h>
-#include <sys/event.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/param.h>
-#include <sys/ptrace.h>
-#include <sys/resource.h>
-#include <sys/select.h>
-#include <sys/signal.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-#include <net/bpf.h>
-#include <net/if_dl.h>
-#include <net/if_var.h>
-#include <net/route.h>
-#include <netinet/in.h>
-
-#include <sys/sysctl.h>
-#include <sys/ucred.h>
-#include <sys/proc.h>
-#include <sys/time.h>
-#include <sys/_types/_timeval.h>
-#include <sys/appleapiopts.h>
-#include <sys/cdefs.h>
-#include <sys/param.h>
-#include <bsm/audit.h>
-#include <sys/queue.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-union sockaddr_all {
-	struct sockaddr s1;	// this one gets used for fields
-	struct sockaddr_in s2;	// these pad it out
-	struct sockaddr_in6 s3;
-	struct sockaddr_un s4;
-	struct sockaddr_dl s5;
-};
-
-struct sockaddr_any {
-	struct sockaddr addr;
-	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
-};
-
-struct ucred_queue {
-        struct ucred *tqe_next;
-        struct ucred **tqe_prev;
-        TRACEBUF
-};
-
-*/
-import "C"
-
-// Machine characteristics; for internal use.
-
-const (
-	sizeofPtr      = C.sizeofPtr
-	sizeofShort    = C.sizeof_short
-	sizeofInt      = C.sizeof_int
-	sizeofLong     = C.sizeof_long
-	sizeofLongLong = C.sizeof_longlong
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type UGid_t C.gid_t
-
-type KinfoProc C.struct_kinfo_proc
-
-type Eproc C.struct_eproc
-
-type Proc C.struct_proc
-
-type Session C.struct_session
-
-type ucred C.struct_ucred
-
-type Uucred C.struct__ucred
-
-type Upcred C.struct__pcred
-
-type Vmspace C.struct_vmspace
-
-type Sigacts C.struct_sigacts
-
-type ExternProc C.struct_extern_proc
-
-type Itimerval C.struct_itimerval
-
-type Vnode C.struct_vnode
-
-type Pgrp C.struct_pgrp
-
-type UserStruct C.struct_user
-
-type Au_session C.struct_au_session
-
-type Posix_cred C.struct_posix_cred
-
-type Label C.struct_label
-
-type AuditinfoAddr C.struct_auditinfo_addr
-type AuMask C.struct_au_mask
-type AuTidAddr C.struct_au_tid_addr
-
-// TAILQ(ucred)
-type UcredQueue C.struct_ucred_queue

vendor/github.com/shirou/gopsutil/process/types_freebsd.go

@@ -1,95 +0,0 @@
-// +build ignore
-
-// We still need editing by hands.
-// go tool cgo -godefs types_freebsd.go | sed 's/\*int64/int64/' | sed 's/\*byte/int64/'  > process_freebsd_amd64.go
-
-/*
-Input to cgo -godefs.
-*/
-
-// +godefs map struct_pargs int64 /* pargs */
-// +godefs map struct_proc int64 /* proc */
-// +godefs map struct_user int64 /* user */
-// +godefs map struct_vnode int64 /* vnode */
-// +godefs map struct_vnode int64 /* vnode */
-// +godefs map struct_filedesc int64 /* filedesc */
-// +godefs map struct_vmspace int64 /* vmspace */
-// +godefs map struct_pcb int64 /* pcb */
-// +godefs map struct_thread int64 /* thread */
-// +godefs map struct___sigset [16]byte /* sigset */
-
-package process
-
-/*
-#include <sys/types.h>
-#include <sys/user.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-
-*/
-import "C"
-
-// Machine characteristics; for internal use.
-
-const (
-	CTLKern          = 1  // "high kernel": proc, limits
-	KernProc         = 14 // struct: process entries
-	KernProcPID      = 1  // by process id
-	KernProcProc     = 8  // only return procs
-	KernProcPathname = 12 // path to executable
-	KernProcArgs     = 7  // get/set arguments/proctitle
-)
-
-const (
-	sizeofPtr      = C.sizeofPtr
-	sizeofShort    = C.sizeof_short
-	sizeofInt      = C.sizeof_int
-	sizeofLong     = C.sizeof_long
-	sizeofLongLong = C.sizeof_longlong
-)
-
-const (
-	sizeOfKinfoVmentry = C.sizeof_struct_kinfo_vmentry
-	sizeOfKinfoProc    = C.sizeof_struct_kinfo_proc
-)
-
-// from sys/proc.h
-const (
-	SIDL   = 1 /* Process being created by fork. */
-	SRUN   = 2 /* Currently runnable. */
-	SSLEEP = 3 /* Sleeping on an address. */
-	SSTOP  = 4 /* Process debugging or suspension. */
-	SZOMB  = 5 /* Awaiting collection by parent. */
-	SWAIT  = 6 /* Waiting for interrupt. */
-	SLOCK  = 7 /* Blocked on a lock. */
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type KinfoProc C.struct_kinfo_proc
-
-type Priority C.struct_priority
-
-type KinfoVmentry C.struct_kinfo_vmentry

vendor/github.com/shirou/gopsutil/process/types_openbsd.go

@@ -1,103 +0,0 @@
-// +build ignore
-
-// We still need editing by hands.
-// go tool cgo -godefs types_openbsd.go | sed 's/\*int64/int64/' | sed 's/\*byte/int64/'  > process_openbsd_amd64.go
-
-/*
-Input to cgo -godefs.
-*/
-
-// +godefs map struct_pargs int64 /* pargs */
-// +godefs map struct_proc int64 /* proc */
-// +godefs map struct_user int64 /* user */
-// +godefs map struct_vnode int64 /* vnode */
-// +godefs map struct_vnode int64 /* vnode */
-// +godefs map struct_filedesc int64 /* filedesc */
-// +godefs map struct_vmspace int64 /* vmspace */
-// +godefs map struct_pcb int64 /* pcb */
-// +godefs map struct_thread int64 /* thread */
-// +godefs map struct___sigset [16]byte /* sigset */
-
-package process
-
-/*
-#include <sys/types.h>
-#include <sys/sysctl.h>
-#include <sys/user.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-
-*/
-import "C"
-
-// Machine characteristics; for internal use.
-
-const (
-	CTLKern          = 1  // "high kernel": proc, limits
-	KernProc         = 66 // struct: process entries
-	KernProcAll      = 0
-	KernProcPID      = 1  // by process id
-	KernProcProc     = 8  // only return procs
-	KernProcPathname = 12 // path to executable
-	KernProcArgs     = 55 // get/set arguments/proctitle
-	KernProcArgv     = 1
-	KernProcEnv      = 3
-)
-
-const (
-	ArgMax = 256 * 1024 // sys/syslimits.h:#define  ARG_MAX
-)
-
-const (
-	sizeofPtr      = C.sizeofPtr
-	sizeofShort    = C.sizeof_short
-	sizeofInt      = C.sizeof_int
-	sizeofLong     = C.sizeof_long
-	sizeofLongLong = C.sizeof_longlong
-)
-
-const (
-	sizeOfKinfoVmentry = C.sizeof_struct_kinfo_vmentry
-	sizeOfKinfoProc    = C.sizeof_struct_kinfo_proc
-)
-
-// from sys/proc.h
-const (
-	SIDL    = 1 /* Process being created by fork. */
-	SRUN    = 2 /* Currently runnable. */
-	SSLEEP  = 3 /* Sleeping on an address. */
-	SSTOP   = 4 /* Process debugging or suspension. */
-	SZOMB   = 5 /* Awaiting collection by parent. */
-	SDEAD   = 6 /* Thread is almost gone */
-	SONPROC = 7 /* Thread is currently on a CPU. */
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type KinfoProc C.struct_kinfo_proc
-
-type Priority C.struct_priority
-
-type KinfoVmentry C.struct_kinfo_vmentry

vendor/vendor.json

@@ -229,7 +229,7 @@
 		{"path":"github.com/shirou/gopsutil/internal/common","checksumSHA1":"jUWM0P4G1bHpO9CPS8gcr4rt1t0=","revision":"1c211f0807a3436707409fa313599dd8c7a48664","revisionTime":"2017-08-17T03:45:37Z"},
 		{"path":"github.com/shirou/gopsutil/mem","checksumSHA1":"xIAuacHA0LNq1yM5Wd1q4lnbzxU=","revision":"1c211f0807a3436707409fa313599dd8c7a48664","revisionTime":"2017-08-17T03:45:37Z"},
 		{"path":"github.com/shirou/gopsutil/net","checksumSHA1":"moxD+mq0dMHnbTeFyeEHK0Iq7i8=","revision":"1c211f0807a3436707409fa313599dd8c7a48664","revisionTime":"2017-08-17T03:45:37Z"},
-		{"path":"github.com/shirou/gopsutil/process","checksumSHA1":"C6ybAAUmWz+PQKqJ8byV7Nj5JXQ=","revision":"1c211f0807a3436707409fa313599dd8c7a48664","revisionTime":"2017-08-17T03:45:37Z"},
+		{"path":"github.com/shirou/gopsutil/process","checksumSHA1":"Ylp6t7kozHBFREv3tBcK4B1SMI4=","revision":"12ab94e8042b4639d3cbd6bdafd0be9be8a33e88","revisionTime":"2018-02-21T07:26:18Z"},
 		{"path":"github.com/shirou/w32","checksumSHA1":"Nve7SpDmjsv6+rhkXAkfg/UQx94=","revision":"bb4de0191aa41b5507caa14b0650cdbddcd9280b","revisionTime":"2016-09-30T03:27:40Z"},
 		{"path":"github.com/skratchdot/open-golang/open","checksumSHA1":"h/HMhokbQHTdLUbruoBBTee+NYw=","revision":"75fb7ed4208cf72d323d7d02fd1a5964a7a9073c","revisionTime":"2016-03-02T14:40:31Z"},
 		{"path":"github.com/spf13/pflag","checksumSHA1":"Q52Y7t0lEtk/wcDn5q7tS7B+jqs=","revision":"7aff26db30c1be810f9de5038ec5ef96ac41fd7c","revisionTime":"2017-08-24T17:57:12Z"},