6cd22d4efe
This is a partial fix of a WIN32-only problem Mark Rivers reported. A WIN32 thread created by a manufacturer's library is used to call one of his callback routines, which tries to use an epics facility that has an epicsThreadOnce(). The new version of epicsThreadOnce() uses epicsThreadGetIdSelf() to detect recursive initialization; the thread doesn't have an epicsThreadId yet, so epicsThreadImplicitCreate() is asked to make one. It calls epicsThreadGetOsiPriorityValue(), but osdPriority is 15 which is not known by that code, so it reports an error by calling errlogPrintf(). That checks epicsThreadIsOkToBlock() which calls epicsThreadOnce() but that needs our epicsThreadId... This doesn't solve the issue of the unknown osdPriority value 15 (priorityClass = 32), but it allows the IOC to continue working with just a warning message at init time. It also points out that calling epicsThreadGetIdSelf() every time we check an epicsThreadOnce() is probably not good for performance.
--------------------------------------------------------- EPICS Base - the central core of a control system toolkit --------------------------------------------------------- Copyright (c) 1991-2003 The University of Chicago, as Operator of Argonne National Laboratory. Copyright (c) 1991-2003 The Regents of the University of California, as Operator of Los Alamos National Laboratory. EPICS Base Versions 3.13.7 and higher are distributed subject to a Software License Agreement found in the file LICENSE that is included with this distribution. --------------------------------------------------------- Installation and release information can be found in the various files in the documentation subdirectory. Additional information about EPICS including mailing list archives and subscription instructions, documentation and training materials, additional components, links to other websites etc. is available on the EPICS home page at http://www.aps.anl.gov/epics/