* Elegant substitute for kzalloc() through #define?
@ 2013-08-28 12:23 Max Seidenstücker
2013-08-28 13:14 ` Sergei Gavrikov
0 siblings, 1 reply; 3+ messages in thread
From: Max Seidenstücker @ 2013-08-28 12:23 UTC (permalink / raw)
To: ecos-devel
As I am trying to touch as few source files as possible I am looking for a
good way to substitute a call to Linux kzalloc(). This function allocates
and zeroes the memory before returning the pointer. So a call to malloc()
and then memset() in eCos is my approach.
How can a #define be written to do the trick, so I don't need to touch the
source file in this area with #ifdef __ECOS ?
struct jffs2_inode_info *f = kzalloc(sizeof(*f), GFP_KERNEL);
if (!f)
return -ENOMEM;
#define kzalloc(x,y) \
malloc(x); \
if (HOW_TO_MAKE_SURE_MALLOC_WAS_SUCCESSFUL) { \
memset(tmp,0,x);\
}
Regards
Max Seidenstuecker
--
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Elegant substitute for kzalloc() through #define?
2013-08-28 12:23 Elegant substitute for kzalloc() through #define? Max Seidenstücker
@ 2013-08-28 13:14 ` Sergei Gavrikov
2013-08-30 14:47 ` Max Seidenstuecker
0 siblings, 1 reply; 3+ messages in thread
From: Sergei Gavrikov @ 2013-08-28 13:14 UTC (permalink / raw)
To: Max Seidenstücker; +Cc: ecos-devel
[-- Attachment #1: Type: TEXT/PLAIN, Size: 1047 bytes --]
What's about
#define kzalloc(size, flags) calloc(size, 1)
See calloc(3) http://linux.die.net/man/3/calloc
Sergei
On Wed, 28 Aug 2013, Max Seidenstücker wrote:
> As I am trying to touch as few source files as possible I am looking for a
> good way to substitute a call to Linux kzalloc(). This function allocates
> and zeroes the memory before returning the pointer. So a call to malloc()
> and then memset() in eCos is my approach.
>
> How can a #define be written to do the trick, so I don't need to touch the
> source file in this area with #ifdef __ECOS ?
>
> struct jffs2_inode_info *f = kzalloc(sizeof(*f), GFP_KERNEL);
> if (!f)
> return -ENOMEM;
>
> #define kzalloc(x,y) \
> malloc(x); \
> if (HOW_TO_MAKE_SURE_MALLOC_WAS_SUCCESSFUL) { \
> memset(tmp,0,x);\
> }
>
> Regards
> Max Seidenstuecker
>
>
>
> --
> View this message in context: http://sourceware-org.1504.n7.nabble.com/Elegant-substitute-for-kzalloc-through-define-tp242405.html
> Sent from the Sourceware - ecos-devel mailing list archive at Nabble.com.
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-08-28 12:23 Elegant substitute for kzalloc() through #define? Max Seidenstücker
2013-08-28 13:14 ` Sergei Gavrikov
2013-08-30 14:47 ` Max Seidenstuecker
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