porting qnx_spawn to spawn

QNX Newsgroups (Archives) qdn.public.qnxrtp.porting
1

hi QSSL and community!
i am having problems getting spawn to be ported from qnx_spawn.
I am changing some of the members of the struct inheritance that I pass to
the spawn function.
When i set the nd and param.sched_priority members of struct inheritance
(and put the corresponding flags in the flags member), the spawn function
returns with an error saying ‘invalid argument’.

any help, suggestions or random comments from people who have succeded in
doing the porting would be great.

thanks!
sanjeev

2

First of all, what version are you using? I believe that
spawning across nodes wasn’t supported until 6.1.0

Secondly are you sure you are using a valid node descriptor?

Sanjeev Koppal <koppal@robotics.usc.edu> wrote:

hi QSSL and community!
i am having problems getting spawn to be ported from qnx_spawn.
I am changing some of the members of the struct inheritance that I pass to
the spawn function.
When i set the nd and param.sched_priority members of struct inheritance
(and put the corresponding flags in the flags member), the spawn function
returns with an error saying ‘invalid argument’.

any help, suggestions or random comments from people who have succeded in
doing the porting would be great.

thanks!
sanjeev

–
cburgess@qnx.com

3

Colin Burgess wrote:

First of all, what version are you using? I believe that
spawning across nodes wasn’t supported until 6.1.0

Secondly are you sure you are using a valid node descriptor?

i am using 6.1, but u are correct about the node descriptor - i was using
it blindly without having set up the different nodes…

but that doesnt explain why setting the priority (alone, without setting
nd) doesnt work…ideas?

thanks!
sanjeev

4

Sanjeev Koppal <koppal@robotics.usc.edu> wrote:

Colin Burgess wrote:

First of all, what version are you using? I believe that
spawning across nodes wasn’t supported until 6.1.0

Secondly are you sure you are using a valid node descriptor?

i am using 6.1, but u are correct about the node descriptor - i was using
it blindly without having set up the different nodes…

Does that mean you are successfully spawning across nodes now?

but that doesnt explain why setting the priority (alone, without setting
nd) doesnt work…ideas?

Could you please post a code snippet?

–
cburgess@qnx.com