* How to set "maxmsg"?
@ 2010-01-07 23:24 Iñaki Baz Castillo
2010-01-07 23:31 ` How to set "maxmsg"? [SOLVED] Iñaki Baz Castillo
0 siblings, 1 reply; 2+ messages in thread
From: Iñaki Baz Castillo @ 2010-01-07 23:24 UTC (permalink / raw)
To: ruby.posix.mq
I'm trying to set "maxmsg" to 100 (rather than the system default 10). For
this I try:
---------------------------------------
MQ = POSIX_MQ.new(
"/mq", # queue name
IO::RDONLY | IO::CREAT, # read only and force creation
nil, # mode
POSIX_MQ::Attr.new(
0, # flags
100, # maxmsg
8192, # msgsize
0 # curmsgs
)
)
---------------------------------------
But I get an error:
`initialize': Invalid argument - mq_open (Errno::EINVAL)
mq_setattr(3) says that such error occurs when:
EINVAL newattr->mq_flags contained set bits other than O_NONBLOCK.
Well, I'm setting 0 for flags, so what am I doing wrong?
Thanks a lot.
--
Iñaki Baz Castillo <ibc@aliax.net>
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: How to set "maxmsg"? [SOLVED]
2010-01-07 23:24 How to set "maxmsg"? Iñaki Baz Castillo
@ 2010-01-07 23:31 ` Iñaki Baz Castillo
0 siblings, 0 replies; 2+ messages in thread
From: Iñaki Baz Castillo @ 2010-01-07 23:31 UTC (permalink / raw)
To: ruby.posix.mq
El Viernes, 8 de Enero de 2010, Iñaki Baz Castillo escribió:
> I'm trying to set "maxmsg" to 100 (rather than the system default 10). For
> this I try:
>
> ---------------------------------------
> MQ = POSIX_MQ.new(
> "/mq", # queue name
> IO::RDONLY | IO::CREAT, # read only and force creation
> nil, # mode
> POSIX_MQ::Attr.new(
> 0, # flags
> 100, # maxmsg
> 8192, # msgsize
> 0 # curmsgs
> )
> )
> ---------------------------------------
>
> But I get an error:
>
> `initialize': Invalid argument - mq_open (Errno::EINVAL)
>
>
> mq_setattr(3) says that such error occurs when:
>
> EINVAL newattr->mq_flags contained set bits other than O_NONBLOCK.
>
> Well, I'm setting 0 for flags, so what am I doing wrong?
Understood! "maxmsg" cannot be greater than the system settings (if I'm not
root).
:)
--
Iñaki Baz Castillo <ibc@aliax.net>
^ permalink raw reply [flat|nested] 2+ messages in thread
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