Merge branch 'master' of github.com:shirou/gopsutil

LICENSE

@@ -25,3 +25,37 @@ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+-------
+internal/common/binary.go in the gopsutil is copied and modifid from golang/encoding/binary.go.
+
+
+
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.rst

@@ -22,7 +22,7 @@ psutil functions on some architectures.
 Migrating to v2
 -------------------------
 
-On gopsutil itself, `v2migration.sh <https://github.com/shirou/gopsutil/blob/v2/v2migration.sh>`_ is used for migration. It can not be commly used, but it may help to your migration.
+On gopsutil itself, `v2migration.sh <https://github.com/shirou/gopsutil/blob/v2/v2migration.sh>`_ is used for migration. It can not be commonly used, but it may help you with migration.
 
 
 Available Architectures
@@ -79,7 +79,7 @@ Documentation
 
 see http://godoc.org/github.com/shirou/gopsutil
 
-Requrement
+Requirements
 -----------------
 
 - go1.5 or above is required.
@@ -153,7 +153,7 @@ Current Status
 ------------------
 
 - x: work
-- b: almost work but something broken
+- b: almost works, but something is broken
 
 ================= ====== ======= ====== =======
 name              Linux  FreeBSD MacOSX Windows
@@ -194,13 +194,13 @@ exe                 x     x              x
 uids                x     x      x
 gids                x     x      x
 terminal            x     x      x
-io_counters         x     x
+io_counters         x     x              x
 nice                x     x      x       x
 num_fds             x
 num_ctx_switches    x
 num_threads         x     x      x       x
 cpu_times           x
-memory_info         x     x      x
+memory_info         x     x      x       x
 memory_info_ex      x
 memory_maps         x
 open_files          x

cpu/cpu.go

@@ -5,6 +5,9 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
+	"sync"
+
+	"github.com/shirou/gopsutil/internal/common"
 )
 
 type TimesStat struct {
@@ -37,8 +40,22 @@ type InfoStat struct {
 	Flags      []string `json:"flags"`
 }
 
-var lastCPUTimes []TimesStat
-var lastPerCPUTimes []TimesStat
+type lastPercent struct {
+	sync.Mutex
+	lastCPUTimes    []TimesStat
+	lastPerCPUTimes []TimesStat
+}
+
+var lastCPUPercent lastPercent
+var invoke common.Invoker
+
+func init() {
+	invoke = common.Invoke{}
+	lastCPUPercent.Lock()
+	lastCPUPercent.lastCPUTimes, _ = Times(false)
+	lastCPUPercent.lastPerCPUTimes, _ = Times(true)
+	lastCPUPercent.Unlock()
+}
 
 func Counts(logical bool) (int, error) {
 	return runtime.NumCPU(), nil

cpu/cpu_darwin.go

@@ -36,7 +36,7 @@ func Info() ([]InfoStat, error) {
 	if err != nil {
 		return ret, err
 	}
-	out, err := exec.Command(sysctl, "machdep.cpu").Output()
+	out, err := invoke.Command(sysctl, "machdep.cpu")
 	if err != nil {
 		return ret, err
 	}
@@ -90,7 +90,7 @@ func Info() ([]InfoStat, error) {
 
 	// Use the rated frequency of the CPU. This is a static value and does not
 	// account for low power or Turbo Boost modes.
-	out, err = exec.Command(sysctl, "hw.cpufrequency").Output()
+	out, err = invoke.Command(sysctl, "hw.cpufrequency")
 	if err != nil {
 		return ret, err
 	}

cpu/cpu_freebsd.go

@@ -27,7 +27,7 @@ func init() {
 	if err != nil {
 		return
 	}
-	out, err := exec.Command(getconf, "CLK_TCK").Output()
+	out, err := invoke.Command(getconf, "CLK_TCK")
 	// ignore errors
 	if err == nil {
 		i, err := strconv.ParseFloat(strings.TrimSpace(string(out)), 64)
@@ -97,29 +97,46 @@ func Times(percpu bool) ([]TimesStat, error) {
 	return ret, nil
 }
 
-// Returns only one CPUInfoStat on FreeBSD
+// Returns only one InfoStat on FreeBSD.  The information regarding core
+// count, however is accurate and it is assumed that all InfoStat attributes
+// are the same across CPUs.
 func Info() ([]InfoStat, error) {
-	filename := "/var/run/dmesg.boot"
-	lines, _ := common.ReadLines(filename)
-
-	var ret []InfoStat
+	const dmesgBoot = "/var/run/dmesg.boot"
+	lines, _ := common.ReadLines(dmesgBoot)
 
 	c := InfoStat{}
+	var vals []string
+	var err error
+	if vals, err = common.DoSysctrl("hw.clockrate"); err != nil {
+		return nil, err
+	}
+	if c.Mhz, err = strconv.ParseFloat(vals[0], 64); err != nil {
+		return nil, fmt.Errorf("Unable to parse FreeBSD CPU clock rate: %v", err)
+	}
+	c.CPU = int32(c.Mhz)
+
+	if vals, err = common.DoSysctrl("hw.ncpu"); err != nil {
+		return nil, err
+	}
+	var i64 int64
+	if i64, err = strconv.ParseInt(vals[0], 10, 32); err != nil {
+		return nil, fmt.Errorf("Unable to parse FreeBSD cores: %v", err)
+	}
+	c.Cores = int32(i64)
+
+	if vals, err = common.DoSysctrl("hw.model"); err != nil {
+		return nil, err
+	}
+	c.ModelName = strings.Join(vals, " ")
+
 	for _, line := range lines {
-		if matches := regexp.MustCompile(`CPU:\s+(.+) \(([\d.]+).+\)`).FindStringSubmatch(line); matches != nil {
-			c.ModelName = matches[1]
-			t, err := strconv.ParseFloat(matches[2], 64)
-			if err != nil {
-				return ret, nil
-			}
-			c.Mhz = t
-		} else if matches := regexp.MustCompile(`Origin = "(.+)"  Id = (.+)  Family = (.+)  Model = (.+)  Stepping = (.+)`).FindStringSubmatch(line); matches != nil {
+		if matches := regexp.MustCompile(`Origin\s*=\s*"(.+)"\s+Id\s*=\s*(.+)\s+Family\s*=\s*(.+)\s+Model\s*=\s*(.+)\s+Stepping\s*=\s*(.+)`).FindStringSubmatch(line); matches != nil {
 			c.VendorID = matches[1]
 			c.Family = matches[3]
 			c.Model = matches[4]
 			t, err := strconv.ParseInt(matches[5], 10, 32)
 			if err != nil {
-				return ret, nil
+				return nil, fmt.Errorf("Unable to parse FreeBSD CPU stepping information from %q: %v", line, err)
 			}
 			c.Stepping = int32(t)
 		} else if matches := regexp.MustCompile(`Features=.+<(.+)>`).FindStringSubmatch(line); matches != nil {
@@ -130,16 +147,8 @@ func Info() ([]InfoStat, error) {
 			for _, v := range strings.Split(matches[1], ",") {
 				c.Flags = append(c.Flags, strings.ToLower(v))
 			}
-		} else if matches := regexp.MustCompile(`Logical CPUs per core: (\d+)`).FindStringSubmatch(line); matches != nil {
-			// FIXME: no this line?
-			t, err := strconv.ParseInt(matches[1], 10, 32)
-			if err != nil {
-				return ret, nil
-			}
-			c.Cores = int32(t)
 		}
-
 	}
 
-	return append(ret, c), nil
+	return []InfoStat{c}, nil
 }

cpu/cpu_linux.go

@@ -19,7 +19,7 @@ func init() {
 	if err != nil {
 		return
 	}
-	out, err := exec.Command(getconf, "CLK_TCK").Output()
+	out, err := invoke.Command(getconf, "CLK_TCK")
 	// ignore errors
 	if err == nil {
 		i, err := strconv.ParseFloat(strings.TrimSpace(string(out)), 64)

cpu/cpu_test.go

@@ -94,6 +94,40 @@ func testCPUPercent(t *testing.T, percpu bool) {
 	}
 }
 
+func testCPUPercentLastUsed(t *testing.T, percpu bool) {
+
+	numcpu := runtime.NumCPU()
+	testCount := 10
+
+	if runtime.GOOS != "windows" {
+		testCount = 2
+		v, err := Percent(time.Millisecond, percpu)
+		if err != nil {
+			t.Errorf("error %v", err)
+		}
+		// Skip CircleCI which CPU num is different
+		if os.Getenv("CIRCLECI") != "true" {
+			if (percpu && len(v) != numcpu) || (!percpu && len(v) != 1) {
+				t.Fatalf("wrong number of entries from CPUPercent: %v", v)
+			}
+		}
+	}
+	for i := 0; i < testCount; i++ {
+		v, err := Percent(0, percpu)
+		if err != nil {
+			t.Errorf("error %v", err)
+		}
+		time.Sleep(1 * time.Millisecond)
+		for _, percent := range v {
+			// Check for slightly greater then 100% to account for any rounding issues.
+			if percent < 0.0 || percent > 100.0001*float64(numcpu) {
+				t.Fatalf("CPUPercent value is invalid: %f", percent)
+			}
+		}
+	}
+
+}
+
 func TestCPUPercent(t *testing.T) {
 	testCPUPercent(t, false)
 }
@@ -101,3 +135,11 @@ func TestCPUPercent(t *testing.T) {
 func TestCPUPercentPerCpu(t *testing.T) {
 	testCPUPercent(t, true)
 }
+
+func TestCPUPercentIntervalZero(t *testing.T) {
+	testCPUPercentLastUsed(t, false)
+}
+
+func TestCPUPercentIntervalZeroPerCPU(t *testing.T) {
+	testCPUPercentLastUsed(t, true)
+}

cpu/cpu_unix.go

@@ -7,24 +7,46 @@ import (
 	"time"
 )
 
-func Percent(interval time.Duration, percpu bool) ([]float64, error) {
-	getAllBusy := func(t TimesStat) (float64, float64) {
-		busy := t.User + t.System + t.Nice + t.Iowait + t.Irq +
-			t.Softirq + t.Steal + t.Guest + t.GuestNice + t.Stolen
-		return busy + t.Idle, busy
+func getAllBusy(t TimesStat) (float64, float64) {
+	busy := t.User + t.System + t.Nice + t.Iowait + t.Irq +
+		t.Softirq + t.Steal + t.Guest + t.GuestNice + t.Stolen
+	return busy + t.Idle, busy
+}
+
+func calculateBusy(t1, t2 TimesStat) float64 {
+	t1All, t1Busy := getAllBusy(t1)
+	t2All, t2Busy := getAllBusy(t2)
+
+	if t2Busy <= t1Busy {
+		return 0
+	}
+	if t2All <= t1All {
+		return 1
+	}
+	return (t2Busy - t1Busy) / (t2All - t1All) * 100
+}
+
+func calculateAllBusy(t1, t2 []TimesStat) ([]float64, error) {
+	// Make sure the CPU measurements have the same length.
+	if len(t1) != len(t2) {
+		return nil, fmt.Errorf(
+			"received two CPU counts: %d != %d",
+			len(t1), len(t2),
+		)
 	}
 
-	calculate := func(t1, t2 TimesStat) float64 {
-		t1All, t1Busy := getAllBusy(t1)
-		t2All, t2Busy := getAllBusy(t2)
+	ret := make([]float64, len(t1))
+	for i, t := range t2 {
+		ret[i] = calculateBusy(t1[i], t)
+	}
+	return ret, nil
+}
 
-		if t2Busy <= t1Busy {
-			return 0
-		}
-		if t2All <= t1All {
-			return 1
-		}
-		return (t2Busy - t1Busy) / (t2All - t1All) * 100
+//Percent calculates the percentage of cpu used either per CPU or combined.
+//If an interval of 0 is given it will compare the current cpu times against the last call.
+func Percent(interval time.Duration, percpu bool) ([]float64, error) {
+	if interval <= 0 {
+		return percentUsedFromLastCall(percpu)
 	}
 
 	// Get CPU usage at the start of the interval.
@@ -33,9 +55,7 @@ func Percent(interval time.Duration, percpu bool) ([]float64, error) {
 		return nil, err
 	}
 
-	if interval > 0 {
-		time.Sleep(interval)
-	}
+	time.Sleep(interval)
 
 	// And at the end of the interval.
 	cpuTimes2, err := Times(percpu)
@@ -43,17 +63,28 @@ func Percent(interval time.Duration, percpu bool) ([]float64, error) {
 		return nil, err
 	}
 
-	// Make sure the CPU measurements have the same length.
-	if len(cpuTimes1) != len(cpuTimes2) {
-		return nil, fmt.Errorf(
-			"received two CPU counts: %d != %d",
-			len(cpuTimes1), len(cpuTimes2),
-		)
+	return calculateAllBusy(cpuTimes1, cpuTimes2)
+}
+
+func percentUsedFromLastCall(percpu bool) ([]float64, error) {
+	cpuTimes, err := Times(percpu)
+	if err != nil {
+		return nil, err
+	}
+	lastCPUPercent.Lock()
+	defer lastCPUPercent.Unlock()
+	var lastTimes []TimesStat
+	if percpu {
+		lastTimes = lastCPUPercent.lastPerCPUTimes
+		lastCPUPercent.lastPerCPUTimes = cpuTimes
+	} else {
+		lastTimes = lastCPUPercent.lastCPUTimes
+		lastCPUPercent.lastCPUTimes = cpuTimes
 	}
 
-	ret := make([]float64, len(cpuTimes1))
-	for i, t := range cpuTimes2 {
-		ret[i] = calculate(cpuTimes1[i], t)
+	if lastTimes == nil {
+		return nil, fmt.Errorf("Error getting times for cpu percent. LastTimes was nil")
 	}
-	return ret, nil
+	return calculateAllBusy(lastTimes, cpuTimes)
+
 }

disk/disk.go

@@ -2,8 +2,16 @@ package disk
 
 import (
 	"encoding/json"
+
+	"github.com/shirou/gopsutil/internal/common"
 )
 
+var invoke common.Invoker
+
+func init() {
+	invoke = common.Invoke{}
+}
+
 type UsageStat struct {
 	Path              string  `json:"path"`
 	Fstype            string  `json:"fstype"`

disk/disk_linux.go

@@ -283,6 +283,10 @@ func IOCounters() (map[string]IOCountersStat, error) {
 
 	for _, line := range lines {
 		fields := strings.Fields(line)
+		if len(fields) < 14 {
+			// malformed line in /proc/diskstats, avoid panic by ignoring.
+			continue
+		}
 		name := fields[2]
 		reads, err := strconv.ParseUint((fields[3]), 10, 64)
 		if err != nil {
@@ -332,6 +336,8 @@ func IOCounters() (map[string]IOCountersStat, error) {
 	return ret, nil
 }
 
+// GetDiskSerialNumber returns Serial Number of given device or empty string
+// on error. Name of device is expected, eg. /dev/sda
 func GetDiskSerialNumber(name string) string {
 	n := fmt.Sprintf("--name=%s", name)
 	udevadm, err := exec.LookPath("/sbin/udevadm")
@@ -339,7 +345,7 @@ func GetDiskSerialNumber(name string) string {
 		return ""
 	}
 
-	out, err := exec.Command(udevadm, "info", "--query=property", n).Output()
+	out, err := invoke.Command(udevadm, "info", "--query=property", n)
 
 	// does not return error, just an empty string
 	if err != nil {

docker/docker.go

@@ -1,10 +1,20 @@
 package docker
 
-import "errors"
+import (
+	"errors"
+
+	"github.com/shirou/gopsutil/internal/common"
+)
 
 var ErrDockerNotAvailable = errors.New("docker not available")
 var ErrCgroupNotAvailable = errors.New("cgroup not available")
 
+var invoke common.Invoker
+
+func init() {
+	invoke = common.Invoke{}
+}
+
 type CgroupMemStat struct {
 	ContainerID             string `json:"containerID"`
 	Cache                   uint64 `json:"cache"`

docker/docker_linux.go

@@ -23,7 +23,7 @@ func GetDockerStat() ([]CgroupDockerStat, error) {
 		return nil, ErrDockerNotAvailable
 	}
 
-	out, err := exec.Command(path, "ps", "-a", "--no-trunc", "--format", "{{.ID}}|{{.Image}}|{{.Names}}|{{.Status}}").Output()
+	out, err := invoke.Command(path, "ps", "-a", "--no-trunc", "--format", "{{.ID}}|{{.Image}}|{{.Names}}|{{.Status}}")
 	if err != nil {
 		return []CgroupDockerStat{}, err
 	}
@@ -65,7 +65,7 @@ func GetDockerIDList() ([]string, error) {
 		return nil, ErrDockerNotAvailable
 	}
 
-	out, err := exec.Command(path, "ps", "-q", "--no-trunc").Output()
+	out, err := invoke.Command(path, "ps", "-q", "--no-trunc")
 	if err != nil {
 		return []string{}, err
 	}

host/host.go

@@ -2,17 +2,25 @@ package host
 
 import (
 	"encoding/json"
+
+	"github.com/shirou/gopsutil/internal/common"
 )
 
+var invoke common.Invoker
+
+func init() {
+	invoke = common.Invoke{}
+}
+
 // A HostInfoStat describes the host status.
 // This is not in the psutil but it useful.
 type InfoStat struct {
 	Hostname             string `json:"hostname"`
 	Uptime               uint64 `json:"uptime"`
 	BootTime             uint64 `json:"bootTime"`
-	Procs                uint64 `json:"procs"`           // number of processes
-	OS                   string `json:"os"`              // ex: freebsd, linux
-	Platform             string `json:"platform"`        // ex: ubuntu, linuxmint
+	Procs                uint64 `json:"procs"`          // number of processes
+	OS                   string `json:"os"`             // ex: freebsd, linux
+	Platform             string `json:"platform"`       // ex: ubuntu, linuxmint
 	PlatformFamily       string `json:"platformFamily"` // ex: debian, rhel
 	PlatformVersion      string `json:"platformVersion"`
 	VirtualizationSystem string `json:"virtualizationSystem"`

host/host_darwin.go

@@ -138,12 +138,12 @@ func PlatformInformation() (string, string, string, error) {
 	if err != nil {
 		return "", "", "", err
 	}
-	out, err := exec.Command(uname, "-s").Output()
+	out, err := invoke.Command(uname, "-s")
 	if err == nil {
 		platform = strings.ToLower(strings.TrimSpace(string(out)))
 	}
 
-	out, err = exec.Command(uname, "-r").Output()
+	out, err = invoke.Command(uname, "-r")
 	if err == nil {
 		version = strings.ToLower(strings.TrimSpace(string(out)))
 	}

host/host_freebsd.go

@@ -143,12 +143,12 @@ func PlatformInformation() (string, string, string, error) {
 		return "", "", "", err
 	}
 
-	out, err := exec.Command(uname, "-s").Output()
+	out, err := invoke.Command(uname, "-s")
 	if err == nil {
 		platform = strings.ToLower(strings.TrimSpace(string(out)))
 	}
 
-	out, err = exec.Command(uname, "-r").Output()
+	out, err = invoke.Command(uname, "-r")
 	if err == nil {
 		version = strings.ToLower(strings.TrimSpace(string(out)))
 	}

host/host_linux.go

@@ -16,6 +16,7 @@ import (
 	"time"
 
 	"github.com/shirou/gopsutil/internal/common"
+	common "github.com/shirou/gopsutil/internal/common"
 	"github.com/shirou/gopsutil/process"
 )
 
@@ -144,6 +145,26 @@ func Users() ([]UserStat, error) {
 
 }
 
+func getOSRelease() (platform string, version string, err error) {
+	contents, err := common.ReadLines(common.HostEtc("os-release"))
+	if err != nil {
+		return "", "", nil // return empty
+	}
+	for _, line := range contents {
+		field := strings.Split(line, "=")
+		if len(field) < 2 {
+			continue
+		}
+		switch field[0] {
+		case "ID": // use ID for lowercase
+			platform = field[1]
+		case "VERSION":
+			version = field[1]
+		}
+	}
+	return platform, version, nil
+}
+
 func getLSB() (*LSB, error) {
 	ret := &LSB{}
 	if common.PathExists(common.HostEtc("lsb-release")) {
@@ -172,7 +193,7 @@ func getLSB() (*LSB, error) {
 		if err != nil {
 			return ret, err
 		}
-		out, err := exec.Command(lsb_release).Output()
+		out, err := invoke.Command(lsb_release)
 		if err != nil {
 			return ret, err
 		}
@@ -264,6 +285,18 @@ func PlatformInformation() (platform string, family string, version string, err
 	} else if common.PathExists(common.HostEtc("arch-release")) {
 		platform = "arch"
 		version = lsb.Release
+	} else if common.PathExists(common.HostEtc("alpine-release")) {
+		platform = "alpine"
+		contents, err := common.ReadLines(common.HostEtc("alpine-release"))
+		if err == nil && len(contents) > 0 {
+			version = contents[0]
+		}
+	} else if common.PathExists(common.HostEtc("os-release")) {
+		p, v, err := getOSRelease()
+		if err == nil {
+			platform = p
+			version = v
+		}
 	} else if lsb.ID == "RedHat" {
 		platform = "redhat"
 		version = lsb.Release
@@ -298,6 +331,10 @@ func PlatformInformation() (platform string, family string, version string, err
 		family = "arch"
 	case "exherbo":
 		family = "exherbo"
+	case "alpine":
+		family = "alpine"
+	case "coreos":
+		family = "coreos"
 	}
 
 	return platform, family, version, nil
@@ -359,7 +396,7 @@ func Virtualization() (string, string, error) {
 		if common.PathExists(filename + "/capabilities") {
 			contents, err := common.ReadLines(filename + "/capabilities")
 			if err == nil {
-				if common.StringsHas(contents, "control_d") {
+				if common.StringsContains(contents, "control_d") {
 					role = "host"
 				}
 			}
@@ -387,9 +424,9 @@ func Virtualization() (string, string, error) {
 	if common.PathExists(filename) {
 		contents, err := common.ReadLines(filename)
 		if err == nil {
-			if common.StringsHas(contents, "QEMU Virtual CPU") ||
-				common.StringsHas(contents, "Common KVM processor") ||
-				common.StringsHas(contents, "Common 32-bit KVM processor") {
+			if common.StringsContains(contents, "QEMU Virtual CPU") ||
+				common.StringsContains(contents, "Common KVM processor") ||
+				common.StringsContains(contents, "Common 32-bit KVM processor") {
 				system = "kvm"
 				role = "guest"
 			}
@@ -410,8 +447,8 @@ func Virtualization() (string, string, error) {
 		contents, err := common.ReadLines(filename + "/self/status")
 		if err == nil {
 
-			if common.StringsHas(contents, "s_context:") ||
-				common.StringsHas(contents, "VxID:") {
+			if common.StringsContains(contents, "s_context:") ||
+				common.StringsContains(contents, "VxID:") {
 				system = "linux-vserver"
 			}
 			// TODO: guest or host
@@ -421,16 +458,28 @@ func Virtualization() (string, string, error) {
 	if common.PathExists(filename + "/self/cgroup") {
 		contents, err := common.ReadLines(filename + "/self/cgroup")
 		if err == nil {
-			if common.StringsHas(contents, "lxc") ||
-				common.StringsHas(contents, "docker") {
+			if common.StringsContains(contents, "lxc") {
 				system = "lxc"
 				role = "guest"
-			} else if common.PathExists("/usr/bin/lxc-version") { // TODO: which
+			} else if common.StringsContains(contents, "docker") {
+				system = "docker"
+				role = "guest"
+			} else if common.StringsContains(contents, "machine-rkt") {
+				system = "rkt"
+				role = "guest"
+			} else if common.PathExists("/usr/bin/lxc-version") {
 				system = "lxc"
 				role = "host"
 			}
 		}
 	}
 
+	if common.PathExists(common.HostEtc("os-release")) {
+		p, _, err := getOSRelease()
+		if err == nil && p == "coreos" {
+			system = "rkt" // Is it true?
+			role = "host"
+		}
+	}
 	return system, role, nil
 }

host/host_linux_ppc64le.go

@@ -1,3 +1,5 @@
+// +build linux
+// +build ppc64le
 // Created by cgo -godefs - DO NOT EDIT
 // cgo -godefs types_linux.go
 

host/host_test.go

@@ -19,6 +19,16 @@ func TestHostInfo(t *testing.T) {
 	}
 }
 
+func TestUptime(t *testing.T) {
+	v, err := Uptime()
+	if err != nil {
+		t.Errorf("error %v", err)
+	}
+	if v == 0 {
+		t.Errorf("Could not get up time %v", v)
+	}
+}
+
 func TestBoot_time(t *testing.T) {
 	v, err := BootTime()
 	if err != nil {
@@ -27,6 +37,9 @@ func TestBoot_time(t *testing.T) {
 	if v == 0 {
 		t.Errorf("Could not get boot time %v", v)
 	}
+	if v < 946652400 {
+		t.Errorf("Invalid Boottime, older than 2000-01-01")
+	}
 }
 
 func TestUsers(t *testing.T) {

host/host_windows.go

@@ -50,7 +50,7 @@ func Info() (*InfoStat, error) {
 	boot, err := BootTime()
 	if err == nil {
 		ret.BootTime = boot
-		ret.Uptime = uptime(boot)
+		ret.Uptime, _ = Uptime()
 	}
 
 	procs, err := process.Pids()
@@ -74,7 +74,7 @@ func GetOSInfo() (Win32_OperatingSystem, error) {
 	return dst[0], nil
 }
 
-func BootTime() (uint64, error) {
+func Uptime() (uint64, error) {
 	if osInfo == nil {
 		_, err := GetOSInfo()
 		if err != nil {
@@ -86,16 +86,16 @@ func BootTime() (uint64, error) {
 	return uint64(now.Sub(t).Seconds()), nil
 }
 
-func uptime(boot uint64) uint64 {
-	return uint64(time.Now().Unix()) - boot
+func bootTime(up uint64) uint64 {
+	return uint64(time.Now().Unix()) - up
 }
 
-func Uptime() (uint64, error) {
-	boot, err := BootTime()
+func BootTime() (uint64, error) {
+	up, err := Uptime()
 	if err != nil {
 		return 0, err
 	}
-	return uptime(boot), nil
+	return bootTime(up), nil
 }
 
 func PlatformInformation() (platform string, family string, version string, err error) {

internal/common/common.go

@@ -8,8 +8,10 @@ package common
 //  - windows (amd64)
 import (
 	"bufio"
+	"bytes"
 	"errors"
 	"io/ioutil"
+	"log"
 	"net/url"
 	"os"
 	"os/exec"
@@ -19,6 +21,12 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
+	"time"
+)
+
+var (
+	Timeout    = 3 * time.Second
+	TimeoutErr = errors.New("Command timed out.")
 )
 
 type Invoker interface {
@@ -28,7 +36,8 @@ type Invoker interface {
 type Invoke struct{}
 
 func (i Invoke) Command(name string, arg ...string) ([]byte, error) {
-	return exec.Command(name, arg...).Output()
+	cmd := exec.Command(name, arg...)
+	return CombinedOutputTimeout(cmd, Timeout)
 }
 
 type FakeInvoke struct {
@@ -118,20 +127,20 @@ func IntToString(orig []int8) string {
 }
 
 func UintToString(orig []uint8) string {
-        ret := make([]byte, len(orig))
-        size := -1
-        for i, o := range orig {
-                if o == 0 {
-                        size = i
-                        break
-                }
-                ret[i] = byte(o)
-        }
-        if size == -1 {
-                size = len(orig)
-        }
-
-        return string(ret[0:size])
+	ret := make([]byte, len(orig))
+	size := -1
+	for i, o := range orig {
+		if o == 0 {
+			size = i
+			break
+		}
+		ret[i] = byte(o)
+	}
+	if size == -1 {
+		size = len(orig)
+	}
+
+	return string(ret[0:size])
 }
 
 func ByteToString(orig []byte) string {
@@ -294,3 +303,41 @@ func HostSys(combineWith ...string) string {
 func HostEtc(combineWith ...string) string {
 	return GetEnv("HOST_ETC", "/etc", combineWith...)
 }
+
+// CombinedOutputTimeout runs the given command with the given timeout and
+// returns the combined output of stdout and stderr.
+// If the command times out, it attempts to kill the process.
+// copied from https://github.com/influxdata/telegraf
+func CombinedOutputTimeout(c *exec.Cmd, timeout time.Duration) ([]byte, error) {
+	var b bytes.Buffer
+	c.Stdout = &b
+	c.Stderr = &b
+	if err := c.Start(); err != nil {
+		return nil, err
+	}
+	err := WaitTimeout(c, timeout)
+	return b.Bytes(), err
+}
+
+// WaitTimeout waits for the given command to finish with a timeout.
+// It assumes the command has already been started.
+// If the command times out, it attempts to kill the process.
+// copied from https://github.com/influxdata/telegraf
+func WaitTimeout(c *exec.Cmd, timeout time.Duration) error {
+	timer := time.NewTimer(timeout)
+	done := make(chan error)
+	go func() { done <- c.Wait() }()
+	select {
+	case err := <-done:
+		timer.Stop()
+		return err
+	case <-timer.C:
+		if err := c.Process.Kill(); err != nil {
+			log.Printf("FATAL error killing process: %s", err)
+			return err
+		}
+		// wait for the command to return after killing it
+		<-done
+		return TimeoutErr
+	}
+}

mem/mem.go

@@ -2,8 +2,16 @@ package mem
 
 import (
 	"encoding/json"
+
+	"github.com/shirou/gopsutil/internal/common"
 )
 
+var invoke common.Invoker
+
+func init() {
+	invoke = common.Invoke{}
+}
+
 // Memory usage statistics. Total, Available and Used contain numbers of bytes
 // for human consumption.
 //

mem/mem_darwin_nocgo.go

@@ -16,7 +16,7 @@ func getVMStat(vms *VirtualMemoryStat) error {
 	if err != nil {
 		return err
 	}
-	out, err := exec.Command(vm_stat).Output()
+	out, err := invoke.Command(vm_stat)
 	if err != nil {
 		return err
 	}

mem/mem_darwin_test.go

@@ -3,7 +3,6 @@
 package mem
 
 import (
-	"os/exec"
 	"strconv"
 	"strings"
 	"testing"
@@ -15,7 +14,7 @@ func TestVirtualMemoryDarwin(t *testing.T) {
 	v, err := VirtualMemory()
 	assert.Nil(t, err)
 
-	outBytes, err := exec.Command("/usr/sbin/sysctl", "hw.memsize").Output()
+	outBytes, err := invoke.Command("/usr/sbin/sysctl", "hw.memsize")
 	assert.Nil(t, err)
 	outString := string(outBytes)
 	outString = strings.TrimSpace(outString)

mem/mem_freebsd.go

@@ -93,7 +93,7 @@ func SwapMemory() (*SwapMemoryStat, error) {
 		return nil, err
 	}
 
-	out, err := exec.Command(swapinfo).Output()
+	out, err := invoke.Command(swapinfo)
 	if err != nil {
 		return nil, err
 	}

net/net.go

@@ -18,15 +18,18 @@ func init() {
 }
 
 type IOCountersStat struct {
-	Name        string `json:"name"`         // interface name
+	Name        string `json:"name"`        // interface name
 	BytesSent   uint64 `json:"bytesSent"`   // number of bytes sent
 	BytesRecv   uint64 `json:"bytesRecv"`   // number of bytes received
 	PacketsSent uint64 `json:"packetsSent"` // number of packets sent
 	PacketsRecv uint64 `json:"packetsRecv"` // number of packets received
-	Errin       uint64 `json:"errin"`        // total number of errors while receiving
-	Errout      uint64 `json:"errout"`       // total number of errors while sending
-	Dropin      uint64 `json:"dropin"`       // total number of incoming packets which were dropped
-	Dropout     uint64 `json:"dropout"`      // total number of outgoing packets which were dropped (always 0 on OSX and BSD)
+	Errin       uint64 `json:"errin"`       // total number of errors while receiving
+	Errout      uint64 `json:"errout"`      // total number of errors while sending
+	Dropin      uint64 `json:"dropin"`      // total number of incoming packets which were dropped
+	Dropout     uint64 `json:"dropout"`     // total number of outgoing packets which were dropped (always 0 on OSX and BSD)
+	Fifoin      uint64 `json:"fifoin"`      // total number of FIFO buffers errors while receiving
+	Fifoout     uint64 `json:"fifoout"`     // total number of FIFO buffers errors while sending
+
 }
 
 // Addr is implemented compatibility to psutil

net/net_darwin.go

@@ -21,7 +21,7 @@ func IOCounters(pernic bool) ([]IOCountersStat, error) {
 	if err != nil {
 		return nil, err
 	}
-	out, err := exec.Command(netstat, "-ibdnW").Output()
+	out, err := invoke.Command(netstat, "-ibdnW")
 	if err != nil {
 		return nil, err
 	}

net/net_freebsd.go

@@ -16,7 +16,7 @@ func IOCounters(pernic bool) ([]IOCountersStat, error) {
 	if err != nil {
 		return nil, err
 	}
-	out, err := exec.Command(netstat, "-ibdnW").Output()
+	out, err := invoke.Command(netstat, "-ibdnW")
 	if err != nil {
 		return nil, err
 	}

net/net_linux.go

@@ -63,6 +63,10 @@ func IOCountersByFile(pernic bool, filename string) ([]IOCountersStat, error) {
 		if err != nil {
 			return ret, err
 		}
+		fifoIn, err := strconv.ParseUint(fields[4], 10, 64)
+		if err != nil {
+			return ret, err
+		}
 		bytesSent, err := strconv.ParseUint(fields[8], 10, 64)
 		if err != nil {
 			return ret, err
@@ -79,6 +83,10 @@ func IOCountersByFile(pernic bool, filename string) ([]IOCountersStat, error) {
 		if err != nil {
 			return ret, err
 		}
+		fifoOut, err := strconv.ParseUint(fields[14], 10, 64)
+		if err != nil {
+			return ret, err
+		}
 
 		nic := IOCountersStat{
 			Name:        interfaceName,
@@ -86,10 +94,12 @@ func IOCountersByFile(pernic bool, filename string) ([]IOCountersStat, error) {
 			PacketsRecv: packetsRecv,
 			Errin:       errIn,
 			Dropin:      dropIn,
+			Fifoin:      fifoIn,
 			BytesSent:   bytesSent,
 			PacketsSent: packetsSent,
 			Errout:      errOut,
 			Dropout:     dropOut,
+			Fifoout:     fifoOut,
 		}
 		ret = append(ret, nic)
 	}

net/net_test.go

@@ -23,7 +23,7 @@ func TestNetIOCountersStatString(t *testing.T) {
 		Name:      "test",
 		BytesSent: 100,
 	}
-	e := `{"name":"test","bytesSent":100,"bytesRecv":0,"packetsSent":0,"packetsRecv":0,"errin":0,"errout":0,"dropin":0,"dropout":0}`
+	e := `{"name":"test","bytesSent":100,"bytesRecv":0,"packetsSent":0,"packetsRecv":0,"errin":0,"errout":0,"dropin":0,"dropout":0,"fifoin":0,"fifoout":0}`
 	if e != fmt.Sprintf("%v", v) {
 		t.Errorf("NetIOCountersStat string is invalid: %v", v)
 	}

process/process_linux_arm64.go

@@ -0,0 +1,9 @@
+// +build linux
+// +build arm64
+
+package process
+
+const (
+	ClockTicks = 100  // C.sysconf(C._SC_CLK_TCK)
+	PageSize   = 4096 // C.sysconf(C._SC_PAGE_SIZE)
+)

process/process_posix.go

@@ -9,6 +9,8 @@ import (
 	"strconv"
 	"strings"
 	"syscall"
+
+	"github.com/shirou/gopsutil/internal/common"
 )
 
 // POSIX
@@ -72,7 +74,10 @@ func (p *Process) SendSignal(sig syscall.Signal) error {
 	}
 	cmd := exec.Command(kill, "-s", sigAsStr, strconv.Itoa(int(p.Pid)))
 	cmd.Stderr = os.Stderr
-	err = cmd.Run()
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+	err = common.WaitTimeout(cmd, common.Timeout)
 	if err != nil {
 		return err
 	}

process/process_windows.go

@@ -23,6 +23,11 @@ const (
 	MaxPathLength = 260
 )
 
+var (
+	modpsapi                 = syscall.NewLazyDLL("psapi.dll")
+	procGetProcessMemoryInfo = modpsapi.NewProc("GetProcessMemoryInfo")
+)
+
 type SystemProcessInformation struct {
 	NextEntryOffset   uint64
 	NumberOfThreads   uint64
@@ -46,13 +51,18 @@ type MemoryMapsStat struct {
 }
 
 type Win32_Process struct {
-	Name           string
-	ExecutablePath *string
-	CommandLine    *string
-	Priority       uint32
-	CreationDate   *time.Time
-	ProcessID      uint32
-	ThreadCount    uint32
+	Name                string
+	ExecutablePath      *string
+	CommandLine         *string
+	Priority            uint32
+	CreationDate        *time.Time
+	ProcessID           uint32
+	ThreadCount         uint32
+	Status              *string
+	ReadOperationCount  uint64
+	ReadTransferCount   uint64
+	WriteOperationCount uint64
+	WriteTransferCount  uint64
 
 	/*
 		CSCreationClassName   string
@@ -76,14 +86,9 @@ type Win32_Process struct {
 		PeakVirtualSize       uint64
 		PeakWorkingSetSize    uint32
 		PrivatePageCount      uint64
-		ReadOperationCount    uint64
-		ReadTransferCount     uint64
-		Status                *string
 		TerminationDate       *time.Time
 		UserModeTime          uint64
 		WorkingSetSize        uint64
-		WriteOperationCount   uint64
-		WriteTransferCount    uint64
 	*/
 }
 
@@ -158,12 +163,12 @@ func (p *Process) CmdlineSlice() ([]string, error) {
 }
 
 func (p *Process) CreateTime() (int64, error) {
-	dst, err := GetWin32Proc(p.Pid)
+	ru, err := getRusage(p.Pid)
 	if err != nil {
 		return 0, fmt.Errorf("could not get CreationDate: %s", err)
 	}
-	date := *dst[0].CreationDate
-	return date.Unix(), nil
+
+	return ru.CreationTime.Nanoseconds() / 1000000, nil
 }
 
 func (p *Process) Cwd() (string, error) {
@@ -207,8 +212,20 @@ func (p *Process) Rlimit() ([]RlimitStat, error) {
 
 	return rlimit, common.ErrNotImplementedError
 }
+
 func (p *Process) IOCounters() (*IOCountersStat, error) {
-	return nil, common.ErrNotImplementedError
+	dst, err := GetWin32Proc(p.Pid)
+	if err != nil || len(dst) == 0 {
+		return nil, fmt.Errorf("could not get Win32Proc: %s", err)
+	}
+	ret := &IOCountersStat{
+		ReadCount:  uint64(dst[0].ReadOperationCount),
+		ReadBytes:  uint64(dst[0].ReadTransferCount),
+		WriteCount: uint64(dst[0].WriteOperationCount),
+		WriteBytes: uint64(dst[0].WriteTransferCount),
+	}
+
+	return ret, nil
 }
 func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error) {
 	return nil, common.ErrNotImplementedError
@@ -234,7 +251,17 @@ func (p *Process) CPUAffinity() ([]int32, error) {
 	return nil, common.ErrNotImplementedError
 }
 func (p *Process) MemoryInfo() (*MemoryInfoStat, error) {
-	return nil, common.ErrNotImplementedError
+	mem, err := getMemoryInfo(p.Pid)
+	if err != nil {
+		return nil, err
+	}
+
+	ret := &MemoryInfoStat{
+		RSS: uint64(mem.WorkingSetSize),
+		VMS: uint64(mem.PagefileUsage),
+	}
+
+	return ret, nil
 }
 func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error) {
 	return nil, common.ErrNotImplementedError
@@ -355,3 +382,45 @@ func getProcInfo(pid int32) (*SystemProcessInformation, error) {
 
 	return &sysProcInfo, nil
 }
+
+func getRusage(pid int32) (*syscall.Rusage, error) {
+	var CPU syscall.Rusage
+
+	c, err := syscall.OpenProcess(syscall.PROCESS_QUERY_INFORMATION, false, uint32(pid))
+	if err != nil {
+		return nil, err
+	}
+	defer syscall.CloseHandle(c)
+
+	if err := syscall.GetProcessTimes(c, &CPU.CreationTime, &CPU.ExitTime, &CPU.KernelTime, &CPU.UserTime); err != nil {
+		return nil, err
+	}
+
+	return &CPU, nil
+}
+
+func getMemoryInfo(pid int32) (PROCESS_MEMORY_COUNTERS, error) {
+	var mem PROCESS_MEMORY_COUNTERS
+	c, err := syscall.OpenProcess(syscall.PROCESS_QUERY_INFORMATION, false, uint32(pid))
+	if err != nil {
+		return mem, err
+	}
+	defer syscall.CloseHandle(c)
+	if err := getProcessMemoryInfo(c, &mem); err != nil {
+		return mem, err
+	}
+
+	return mem, err
+}
+
+func getProcessMemoryInfo(h syscall.Handle, mem *PROCESS_MEMORY_COUNTERS) (err error) {
+	r1, _, e1 := syscall.Syscall(procGetProcessMemoryInfo.Addr(), 3, uintptr(h), uintptr(unsafe.Pointer(mem)), uintptr(unsafe.Sizeof(*mem)))
+	if r1 == 0 {
+		if e1 != 0 {
+			err = error(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}

process/process_windows_386.go

@@ -0,0 +1,16 @@
+// +build windows
+
+package process
+
+type PROCESS_MEMORY_COUNTERS struct {
+	CB                         uint32
+	PageFaultCount             uint32
+	PeakWorkingSetSize         uint32
+	WorkingSetSize             uint32
+	QuotaPeakPagedPoolUsage    uint32
+	QuotaPagedPoolUsage        uint32
+	QuotaPeakNonPagedPoolUsage uint32
+	QuotaNonPagedPoolUsage     uint32
+	PagefileUsage              uint32
+	PeakPagefileUsage          uint32
+}

process/process_windows_amd64.go

@@ -0,0 +1,16 @@
+// +build windows
+
+package process
+
+type PROCESS_MEMORY_COUNTERS struct {
+	CB                         uint32
+	PageFaultCount             uint32
+	PeakWorkingSetSize         uint64
+	WorkingSetSize             uint64
+	QuotaPeakPagedPoolUsage    uint64
+	QuotaPagedPoolUsage        uint64
+	QuotaPeakNonPagedPoolUsage uint64
+	QuotaNonPagedPoolUsage     uint64
+	PagefileUsage              uint64
+	PeakPagefileUsage          uint64
+}