Re: [Merge] ~dirk.zimoch/epics-base:epicsMutexPriorityInheritance into epics-base:7.0

[Dirk Zimoch via Core-talk <core-talk at aps.anl.gov>]

We found that EPICS was not behaving as "real-time" as expected even though SCHED_FIFO was used. A deeper investigation found that this was due to prioriy inversion. When reading the source code, we found that "Until these can be demonstrated to work leave them undefined" has been in for a long time and nobody seemed to have cared, which had surprized us a lot. I think this wither got forgotten somehow and nobody really needed it or noticed it or maybe people simply removed those #undefs (which is not sufficient because other code used posix semaphores directly instead of using epicsMutexes).

I propose this change now, because we have fixed it now.

Till needs to comment on details of the implementation...
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https://code.launchpad.net/~dirk.zimoch/epics-base/+git/epics-base/+merge/394327
Your team EPICS Core Developers is requested to review the proposed merge of ~dirk.zimoch/epics-base:epicsMutexPriorityInheritance into epics-base:7.0.