

{
{    The purpose of this procedure is to call the segment manager to acquire a
{  shared stack segment for use by the task being initiated.
{    This procedure runs in ring 2 so that it can lock the parent-child task
{  control block chain before calling the segment manager.  This is necessary
{  to ensure that the array of task_id's sent to the segment manager contain
{  only valid entries.
{
{        PMP$CREATE_SHARED_STACK (SEGMENT_ATTRIBUTES, STATUS)
{
{  SEGMENT_ATTRIBUTES: (input) This parameter specifies the attributes the stack segment
{        is to be assigned.
{
{  STATUS: (output) This parameter specifies the request status.
{
