Re: why is Size of sigset_t 128 bytes ?
On Wed, Jun 16, 2010 at 9:08 AM, Peter Teoh wrote:
> On Tue, Jun 15, 2010 at 9:00 PM, Siddu wrote:
> > Hello all,
> >
> > I came across an article (http://www.linuxjournal.com/article/6483)
> about
> > signals . Its a very nice article
> >
> > It says and also i verified that the size of sigset_t showing 128 bytes ?
> >
> > while code from /* /usr/include/bits/sigset.h */
> >
> > "Maybe this is not the right place to ask this Sorry, Hoping someone
> > would be knowing the answer "
> >
> > # define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
> > typedef struct
> > {
> > unsigned long int __val[_SIGSET_NWORDS];
> > } __sigset_t;
> >
> > typedef __sigset_t sigset_t;
> >
> > which is definitely not 128 bytes .
>
>
> yes but it is!!!
>
> 1024/64
> 16
> 8*16
> 128
>
> unsigned long int = 8 fyi.
>
It could also be possible like this
On my machine
unsigned long int = 4 bytes
1024 / (8 * 4) = 32
32 * 4 = 128 bytes
>
> >
> > Thanks for your inputs !
> >
> > --
> > Regards,
> > ~Sid~
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> -
> > - - -
> > Gazing through the window at the world outside,
> > Wondering will mother earth survive ?
> > Hoping that the mankind will stop abusing her
> > Sometime !
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> -
> > - - -
> >
>
>
>
> --
> Regards,
> Peter Teoh
>
--
Regards,
~Sid~
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - -
Gazing through the window at the world outside,
Wondering will mother earth survive ?
Hoping that the mankind will stop abusing her
Sometime !
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - -
Re: why is Size of sigset_t 128 bytes ?
On Tue, Jun 15, 2010 at 7:27 PM, Manish Regmi wrote:
> On Tue, Jun 15, 2010 at 8:00 AM, Siddu wrote:
> > Hello all,
> >
> > I came across an article (http://www.linuxjournal.com/article/6483)
> about
> > signals . Its a very nice article
> >
> > It says and also i verified that the size of sigset_t showing 128 bytes ?
> >
> > while code from /* /usr/include/bits/sigset.h */
> >
> > "Maybe this is not the right place to ask this Sorry, Hoping someone
> > would be knowing the answer "
> >
> > # define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
> > typedef struct
> > {
> > unsigned long int __val[_SIGSET_NWORDS];
> > } __sigset_t;
> >
> > typedef __sigset_t sigset_t;
> >
> > which is definitely not 128 bytes .
>
>
> it always adds up to 128 bytes both on 32 and 64 bit machines.
>
> Haan that's right my bad :(
>
>
>
> ---
> regards
> Manish Regmi
>
> http://manish-cs.blogspot.com
> http://ext2read.sf.net
>
--
Regards,
~Sid~
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - -
Gazing through the window at the world outside,
Wondering will mother earth survive ?
Hoping that the mankind will stop abusing her
Sometime !
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - -
Re: why is Size of sigset_t 128 bytes ?
On Tue, Jun 15, 2010 at 8:00 AM, Siddu wrote:
> Hello all,
>
> I came across an article (http://www.linuxjournal.com/article/6483) about
> signals . Its a very nice article
>
> It says and also i verified that the size of sigset_t showing 128 bytes ?
>
> while code from /* /usr/include/bits/sigset.h */
>
> "Maybe this is not the right place to ask this Sorry, Hoping someone
> would be knowing the answer "
>
> # define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
> typedef struct
> {
> unsigned long int __val[_SIGSET_NWORDS];
> } __sigset_t;
>
> typedef __sigset_t sigset_t;
>
> which is definitely not 128 bytes .
it always adds up to 128 bytes both on 32 and 64 bit machines.
---
regards
Manish Regmi
http://manish-cs.blogspot.com
http://ext2read.sf.net
--
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Re: why is Size of sigset_t 128 bytes ?
On Tue, Jun 15, 2010 at 6:30 PM, Siddu wrote:
> Hello all,
>
> I came across an article (http://www.linuxjournal.com/article/6483) about
> signals . Its a very nice article
>
> It says and also i verified that the size of sigset_t showing 128 bytes ?
>
> while code from /* /usr/include/bits/sigset.h */
>
> "Maybe this is not the right place to ask this Sorry, Hoping someone
> would be knowing the answer "
>
> # define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
> typedef struct
> {
> unsigned long int __val[_SIGSET_NWORDS];
> } __sigset_t;
>
> typedef __sigset_t sigset_t;
>
> which is definitely not 128 bytes .
Why not ???
Assuming 32 bit machines unsigned long int is 4 bytes, and you are
declaring and array of 32 elements of 4 bytes each.
>
> Thanks for your inputs !
>
> --
> Regards,
> ~Sid~
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - -
> Gazing through the window at the world outside,
> Wondering will mother earth survive ?
> Hoping that the mankind will stop abusing her
> Sometime !
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - -
>
--
Thanks -
Manish
==
[$\*.^ -- I miss being one of them
==
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why is Size of sigset_t 128 bytes ?
Hello all,
I came across an article (http://www.linuxjournal.com/article/6483) about
signals . Its a very nice article
It says and also i verified that the size of sigset_t showing 128 bytes ?
while code from /** /usr/include/bits/sigset.h **/
"Maybe this is not the right place to ask this Sorry, Hoping someone
would be knowing the answer "
*# define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
typedef struct
{
unsigned long int __val[_SIGSET_NWORDS];
} __sigset_t;
typedef __sigset_t sigset_t;
*which is definitely not 128 bytes .
Thanks for your inputs !
--
Regards,
~Sid~
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - -
Gazing through the window at the world outside,
Wondering will mother earth survive ?
Hoping that the mankind will stop abusing her
Sometime !
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - -
