Update host.Info() to return the number of processes on all platforms.

Fixes: #227

host/host_darwin.go

@@ -15,6 +15,7 @@ import (
 	"unsafe"
 
 	"github.com/shirou/gopsutil/internal/common"
+	"github.com/shirou/gopsutil/process"
 )
 
 // from utmpx.h
@@ -37,6 +38,7 @@ func Info() (*InfoStat, error) {
 		ret.PlatformFamily = family
 		ret.PlatformVersion = version
 	}
+
 	system, role, err := Virtualization()
 	if err == nil {
 		ret.VirtualizationSystem = system
@@ -49,6 +51,11 @@ func Info() (*InfoStat, error) {
 		ret.Uptime = uptime(boot)
 	}
 
+	procs, err := process.Pids()
+	if err == nil {
+		ret.Procs = uint64(len(procs))
+	}
+
 	return ret, nil
 }
 

host/host_freebsd.go

@@ -15,6 +15,7 @@ import (
 	"unsafe"
 
 	"github.com/shirou/gopsutil/internal/common"
+	"github.com/shirou/gopsutil/process"
 )
 
 const (
@@ -40,6 +41,7 @@ func Info() (*InfoStat, error) {
 		ret.PlatformFamily = family
 		ret.PlatformVersion = version
 	}
+
 	system, role, err := Virtualization()
 	if err == nil {
 		ret.VirtualizationSystem = system
@@ -52,6 +54,11 @@ func Info() (*InfoStat, error) {
 		ret.Uptime = uptime(boot)
 	}
 
+	procs, err := process.Pids()
+	if err == nil {
+		ret.Procs = uint64(len(procs))
+	}
+
 	return ret, nil
 }
 

host/host_linux.go

@@ -16,6 +16,7 @@ import (
 	"time"
 
 	"github.com/shirou/gopsutil/internal/common"
+	"github.com/shirou/gopsutil/process"
 )
 
 type LSB struct {
@@ -44,17 +45,24 @@ func Info() (*InfoStat, error) {
 		ret.PlatformFamily = family
 		ret.PlatformVersion = version
 	}
+
 	system, role, err := Virtualization()
 	if err == nil {
 		ret.VirtualizationSystem = system
 		ret.VirtualizationRole = role
 	}
+
 	boot, err := BootTime()
 	if err == nil {
 		ret.BootTime = boot
 		ret.Uptime = uptime(boot)
 	}
 
+	procs, err := process.Pids()
+	if err == nil {
+		ret.Procs = uint64(len(procs))
+	}
+
 	return ret, nil
 }
 

host/host_test.go

@@ -14,6 +14,9 @@ func TestHostInfo(t *testing.T) {
 	if v == empty {
 		t.Errorf("Could not get hostinfo %v", v)
 	}
+	if v.Procs == 0 {
+		t.Errorf("Could not determine the number of host processes")
+	}
 }
 
 func TestBoot_time(t *testing.T) {

host/host_windows.go

@@ -54,11 +54,9 @@ func Info() (*InfoStat, error) {
 	}
 
 	procs, err := process.Pids()
-	if err != nil {
+	if err == nil {
-		return ret, err
-	}
-
 		ret.Procs = uint64(len(procs))
+	}
 
 	return ret, nil
 }