syscall.SysInfo not exists in FreeBSD. use sysctl instead.

common_freebsd.go

@@ -0,0 +1,20 @@
+// +build freebsd
+
+package gopsutil
+
+import (
+	"os/exec"
+	"strings"
+)
+
+func do_sysctrl(mib string) ([]string, error){
+	out, err := exec.Command("/sbin/sysctl", "-n", mib).Output()
+	if err != nil {
+		return []string{}, err
+	}
+	v := strings.Replace(string(out), "{ ", "", 1)
+	v = strings.Replace(string(v), " }", "", 1)
+	values := strings.Fields(string(v))
+
+	return values, nil
+}

mem_freebsd.go

@@ -0,0 +1,15 @@
+// +build freebsd
+
+package gopsutil
+
+func Virtual_memory() (Virtual_memoryStat, error) {
+	ret := Virtual_memoryStat{}
+
+	return ret, nil
+}
+
+func Swap_memory() (Swap_memoryStat, error) {
+	ret := Swap_memoryStat{}
+
+	return ret, nil
+}