func SaveState(vm *platform.Vm, model *machine.Model) (State, error) {
// Pause the vm.
// NOTE: Our model will also be stopped automatically
// with model.DeviceInfo() below, but we manually pause
// the Vcpus here in order to ensure they are completely
// stopped prior to saving all device state.
err := vm.Pause(false)
if err != nil {
return State{}, err
}
defer vm.Unpause(false)
// Grab our vcpu states.
vcpus, err := vm.VcpuInfo()
if err != nil {
return State{}, err
}
// Grab our devices.
// NOTE: This should block until devices have
// actually quiesed (finished processing outstanding
// requests generated by the VCPUs).
devices, err := model.DeviceInfo(vm)
if err != nil {
return State{}, err
}
// Done.
return State{Vcpus: vcpus, Devices: devices}, nil
}
