foundry27 : Post

Forum Topic - Tracing and Monitroing with QNX: (2 Items)

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Usam Sersultanov (deleted)

05/25/2018 9:09 AM

post118846

Hallo,

I'm writing my master's thesis in a company and in my project I need to implement a tracing tool. The QNX OS is a hot 
candidat for my project and I wanted to ask, whether the QNX OS supports the POSIX Tracing Standard (IEEE 1003.1q-2000).


Best regards
Usam

Albrecht Uhlmann

05/28/2018 3:37 AM

post118852

Re: Tracing and Monitroing with QNX

I quickly browsed unistd.h

In SDP 6.6. it simplay says:
/* POSIX 1003.1q-2000 */
# undef _POSIX_TRACE_EVENT_FILTER
# undef _POSIX_TRACE
# undef _POSIX_TRACE_INHERIT
# undef _POSIX_TRACE_LOG

So I fear it is not implemented. Under SDP 7, it says 
/* POSIX 1003.1q-2000 */
# define _POSIX_TRACE_EVENT_FILTER	(-1)
# define _POSIX_TRACE				(-1)
# define _POSIX_TRACE_INHERIT		(-1)
# define _POSIX_TRACE_LOG			(-1)

So something has changed, but I don't know what (-1) means. Does it also say "No" or does it say "Default Support" or 
something? Maybe someone from QNX can comment on this ... my understanding is that there needs to be a wrapper API for 
the Low-Level "TraceEvent" calls.

Regards,
Al

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