ESMF_VMLogBacktrace Subroutine

  subroutine ESMF_VMLogBacktrace(prefix, logMsgFlag, rc)
!
! !ARGUMENTS:
    character (len=*),      intent(in),   optional  :: prefix
    type(ESMF_LogMsg_Flag), intent(in),   optional  :: logMsgFlag
    integer,                intent(out),  optional  :: rc
!
! !DESCRIPTION:
!   Log backtrace of the current call stack.
!
!   The arguments are:
!   \begin{description}
!   \item [{[prefix]}]
!     String to prefix the backtrace message. Default is no prefix.
!   \item [{[logMsgFlag]}]
!     Type of log message generated. See section \ref{const:logmsgflag} for
!     a list of valid message types. Default is {\tt ESMF\_LOGMSG\_INFO}.
!   \item[{[rc]}]
!     Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
!   \end{description}
!
!EOPI
!------------------------------------------------------------------------------
    integer                 :: localrc      ! local return code
    type(ESMF_LogMsg_Flag)  :: logMsg

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

    ! deal with optionl logMsgFlag
    logMsg = ESMF_LOGMSG_INFO ! default
    if (present(logMsgFlag)) logMsg = logMsgFlag

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

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

  end subroutine ESMF_VMLogBacktrace