The user-written HANDLER routine performs condition handling.

    Format

      HANDLER  signal_vector ,mechanism_vector

1  –  Returns

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value

    Longword condition value.

2  –  Arguments

 signal_vector

    OpenVMS usage:arg_list
    type:         longword (unsigned)
    access:       modify
    mechanism:    by reference
    Signal vector. See the VSI OpenVMS System Services Reference
    Manual for information about the signal vector passed to a
    condition handler.

 mechanism_vector

    OpenVMS usage:arg_list
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference
    Mechanism vector. See the VSI OpenVMS System Services Reference
    Manual for information about the mechanism vector passed to a
    condition handler.

3  –  Description

    If you need more information about writing condition handlers and
    programming concepts, refer to VSI OpenVMS Programming Concepts
    Manual.

    Instead of writing your own condition handler, you can use the
    default condition handler, TPU$HANDLER. If you want to write your
    own routine, you must call TPU$HANDLER with the same parameters
    that your routine received to handle TPU internal signals.