func()

in sigar_freebsd.go [115:158]

• 37 lines of code
• 5 McCabe index (conditional complexity)

func (self *Mem) Get() error {
	val := C.uint32_t(0)
	sc := C.size_t(4)

	name := C.CString("vm.stats.vm.v_page_count")
	_, err := C.sysctlbyname(name, unsafe.Pointer(&val), &sc, nil, 0)
	C.free(unsafe.Pointer(name))
	if err != nil {
		return err
	}
	pagecount := uint64(val)

	name = C.CString("vm.stats.vm.v_page_size")
	_, err = C.sysctlbyname(name, unsafe.Pointer(&val), &sc, nil, 0)
	C.free(unsafe.Pointer(name))
	if err != nil {
		return err
	}
	pagesize := uint64(val)

	name = C.CString("vm.stats.vm.v_free_count")
	_, err = C.sysctlbyname(name, unsafe.Pointer(&val), &sc, nil, 0)
	C.free(unsafe.Pointer(name))
	if err != nil {
		return err
	}
	self.Free = uint64(val) * pagesize

	name = C.CString("vm.stats.vm.v_inactive_count")
	_, err = C.sysctlbyname(name, unsafe.Pointer(&val), &sc, nil, 0)
	C.free(unsafe.Pointer(name))
	if err != nil {
		return err
	}
	kern := uint64(val)

	self.Total = uint64(pagecount * pagesize)

	self.Used = self.Total - self.Free
	self.ActualFree = self.Free + (kern * pagesize)
	self.ActualUsed = self.Used - (kern * pagesize)

	return nil
}