I 'm writing a code to traverse all allocated slabs. First I traverse cache list through "cache_chain". my code is:
but when compiling I receive following errors:Code:struct list_head cache_chain, *p; list_for_each(p, &cache_chain){ kmem_cache_t *cachep=list_entry(p, struct kmem_cache_t, next); ... }
error: dereferencing pointer to incomplete type
error: invalid use of incomplete typedef 'keme_cache_t'
what should I do?
Is that bolded part just a typo? The error lists keme_cache_t, but your code has kmem_cache_t.error: invalid use of incomplete typedef 'keme_cache_t'
If it is just a typo, then it's appears to be a problem where you typedef'd a type, but didn't include the header file for that type.
bit∙hub [bit-huhb] n. A source and destination for information.
yes, that's a typo.
I think the error is because of one of these two reasons:
1. the header file for kmem_cache_t is not included: I tried to find the header file but I couldn't.
2. cache_chain is not initialized. this reason is more logical for me, but I don't know how to initialize it. can you help me, please?
and, thanks for first reply.
Because it doesn't exist. I grepped thru the kernel headers and /usr/include. It is not referred to anywhere:Originally Posted by aliasghar
Then I googled this
[PATCH] Remove the deprecated "kmem_cache_t" typedef from slab.h.
apparently kmem_cache_t used to be in slab.h (a kernel header) but is no longer used in the kernel tree so has been depreciated right out.
I think the original typdef is in that post tho, so you could just paste it in.
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
