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idnode: Fix the short idnode unique number detection

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This commit is contained in:
Jaroslav Kysela 2014-08-19 15:58:20 +02:00
parent e6d2f393fa
commit d043dbe24b
1 changed files with 23 additions and 10 deletions
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33
src/idnode.c
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@ -58,14 +58,6 @@ in_cmp(const idnode_t *a, const idnode_t *b)
return memcmp(a->in_uuid, b->in_uuid, sizeof(a->in_uuid));
}
static int
in_cmp_short(const idnode_t *a, const idnode_t *b)
{
if (a->in_class != b->in_class)
return memcmp(a->in_uuid, b->in_uuid, sizeof(a->in_uuid));
return idnode_get_short_uuid(b) - idnode_get_short_uuid(a);
}
/* **************************************************************************
* Registration
* *************************************************************************/
@ -102,6 +94,17 @@ idnode_done(void)
SKEL_FREE(idclasses_skel);
}
static const idclass_t *
idnode_root_class(idnode_t *in)
{
const idclass_t *idc;
idc = in->in_class;
while (idc && idc->ic_super)
idc = idc->ic_super;
return idc;
}
/**
*
*/
@ -112,6 +115,8 @@ idnode_insert(idnode_t *in, const char *uuid, const idclass_t *class, int flags)
lock_assert(&global_lock);
tvh_uuid_t u;
int retries = 5;
uint32_t u32;
const idclass_t *idc;;
in->in_class = class;
do {
@ -121,8 +126,16 @@ idnode_insert(idnode_t *in, const char *uuid, const idclass_t *class, int flags)
memcpy(in->in_uuid, u.bin, sizeof(in->in_uuid));
c = NULL;
if (flags & IDNODE_SHORT_UUID)
c = RB_FIND(&idnodes, in, in_link, in_cmp_short);
if (flags & IDNODE_SHORT_UUID) {
u32 = idnode_get_short_uuid(in);
idc = idnode_root_class(in);
RB_FOREACH(c, &idnodes, in_link) {
if (idc != idnode_root_class(c))
continue;
if (idnode_get_short_uuid(c) == u32)
break;
}
}
if (c == NULL)
c = RB_INSERT_SORTED(&idnodes, in, in_link, in_cmp);