STREAMS/UX for the HP 9000 Reference Manual

STREAMS/UX Multiprocessor Support

MP Synchronization Levels on a Uniprocessor

You can conﬁgure modules and drivers to use a particular synchronization

level whether or not they are MP scalable, run under UP emulation, or only

run on a uniprocessor system. The section “Conﬁguring MP Scalable

Modules and Drivers” in this chapter shows examples of conﬁguring MP

scalable modules and drivers to use synchronization levels. There is no

difference between conﬁguring modules and drivers which run only on a

uniprocessor system and modules and drivers which run under UP

emulation. Examples of conﬁguring uniprocesor/UP emulation modules

and drivers are shown below. Examples are given for both master ﬁle

entries and module and driver install functions. See Chapter 5 for more

information about conﬁguring modules and drivers.

MASTER FILE $DEVICE TABLE CONFIGURATION

* name handle type mask block char

$DEVICE

A Ainfo 40 2000 -1 -1 /* UP module, since 0x10000 not in mask */

B Binfo 40 2000 -1 -1 /* UP module, since 0x10000 not in mask */

C Cinfo 40 2000 -1 -1 /* UP module, since 0x10000 not in mask */

D Dinfo 21 20FC -1 116 /* UP driver, since 0x10000 not in mask */

$$$

* name sync level sync name

$STREAMS_DVR_SYNC

A sync_module /* Module uses synch level */

B sync_module /* Module uses synch level */

C sync_elsewhere netsync /* Module uses synch level & name */

D sync_elsewhere netsync /* Driver uses synch level & name */

$$$