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libctf: Add iteration over non-root types

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The existing function ctf_type_iter lets you iterate over root-visible
types (types you can look up by name).  There is no way to iterate over
non-root-visible types, which is troublesome because both the linker
and dumper want to do that.

So add a new function that can do it: the callback it takes accepts
an extra parameter which indicates whether the type is root-visible
or not.

include/
	* ctf-api.h (ctf_type_all_f): New.
	(ctf_type_iter_all): New.

libctf/
	* ctf_types.c (ctf_type_iter_all): New.
This commit is contained in:
Nick Alcock 2019-07-13 20:00:07 +01:00
parent 6b88d7d70c
commit 0ac6231298
4 changed files with 32 additions and 0 deletions
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21
libctf/ctf-types.c
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@ -144,6 +144,27 @@ ctf_type_iter (ctf_file_t *fp, ctf_type_f *func, void *arg)
return 0;
}
/* Iterate over every type in the given CTF container, user-visible or not.
We pass the type ID of each type to the specified callback function. */
int
ctf_type_iter_all (ctf_file_t *fp, ctf_type_all_f *func, void *arg)
{
ctf_id_t id, max = fp->ctf_typemax;
int rc, child = (fp->ctf_flags & LCTF_CHILD);
for (id = 1; id <= max; id++)
{
const ctf_type_t *tp = LCTF_INDEX_TO_TYPEPTR (fp, id);
if ((rc = func (LCTF_INDEX_TO_TYPE (fp, id, child),
LCTF_INFO_ISROOT(fp, tp->ctt_info)
? CTF_ADD_ROOT : CTF_ADD_NONROOT, arg) != 0))
return rc;
}
return 0;
}
/* Iterate over every variable in the given CTF container, in arbitrary order.
We pass the name of each variable to the specified callback function. */