Hi Kamil, _SC_SEM_NSEMS_MAX is not the same with SEM_VALUE_MAX. The first one is used to limit the number of sems for a process, while the second is used to set the initial value for a semaphore.
2016-05-26 16:25 GMT-07:00 Kamil Rytarowski <n...@gmx.com>: > > > On 27.05.2016 00:02, Christos Zoulas wrote: > > 5. _SC_SEM_NSEMS_MAX, although that's not the real limit, good enough. > > Is it the same (indirectly) SEM_VALUE_MAX? > > #define SEM_VALUE_MAX (~0U) > > It's located in <sys/semaphore.h>. > > I think we should go for LONG_MAX: > 1. We will be able to return it via sysconf(3) > 2. It's still large enough > 3. Change SEM_VALUE_MAX to LONG_MAX to retain the same corresponding size. > > Also we perhaps should add a dynamic value of SEM_VALUE_MAX for > sysconf(3) and maybe another value for the longest valid path name size > (lately it was around 15 characters). >
