STREAMS-UX Programmer's Guide (February 2007)

Differences Between STREAMS/UX and System V Release 4 STREAMS
Differences Between SVR4 MP and HP-UX MP STREAMS
Appendix E
278
combination of these two strategies may make sense. For example, suppose several modules and drivers share
the same structure, but do not access it on the main read and write paths. Use SVR4 MP spinlocks to protect
this data, but use the STREAMS/UX synchronization levels to protect other structures.