ESMF_VMThreadBarrier Subroutine

  subroutine ESMF_VMThreadBarrier(vm, keywordEnforcer, rc)
!
! !ARGUMENTS:
    type(ESMF_VM), intent(in)            :: vm
type(ESMF_KeywordEnforcer), optional:: keywordEnforcer ! must use keywords below
    integer,       intent(out), optional :: rc
!
! !DESCRIPTION:
!   Partially collective {\tt ESMF\_VM} communication call that blocks calling
!   PET until all of the PETs that are running under the same POSIX process have
!   issued the call.
!
!   The arguments are:
!   \begin{description}
!   \item[vm] 
!        {\tt ESMF\_VM} object.
!   \item[{[rc]}] 
!        Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
!   \end{description}
!
!EOPI
!------------------------------------------------------------------------------
    integer                 :: localrc      ! local return code

    ! initialize return code; assume routine not implemented
    localrc = ESMF_RC_NOT_IMPL
    if (present(rc)) rc = ESMF_RC_NOT_IMPL

    ! Check init status of arguments
    ESMF_INIT_CHECK_DEEP(ESMF_VMGetInit, vm, rc)

    ! Call into the C++ interface.
    call c_ESMC_VMThreadBarrier(vm, localrc)
    if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
      ESMF_CONTEXT, rcToReturn=rc)) return

    ! return successfully
    if (present(rc)) rc = ESMF_SUCCESS

  end subroutine ESMF_VMThreadBarrier