| PMISREADDONE(3) | PMISREADDONE(3) | 
int pmIsReadDone(pmContext *pmc);
pmContext * | 
  pmc | 
  pmContext object | 
pmIsReadDone() determines if all previous
pmRead()'s are done.
PM_SUCCESS | 
  All remote reads are done | 
EBUSY | 
  Some remote reads are not yet done | 
EIO | 
  Error occured in some remote reads | 
ENOSYS | 
  Operation not supported |