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idr:New idr_find interface 

Different from idr_get_next, if idr_find directly when could not find the node id return an error

Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
This commit is contained in:
chenrun1 2024-06-08 13:03:48 +08:00 committed by Alan Carvalho de Assis
parent a1ccf15e39
commit 97338c9f3d
2 changed files with 27 additions and 0 deletions
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1
include/nuttx/idr.h
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@ -40,6 +40,7 @@ struct idr_s;
* Public Function Prototypes
****************************************************************************/
FAR void *idr_find(FAR struct idr_s *idr, unsigned int id);
FAR void *idr_get_next(FAR struct idr_s *idr, FAR int *id);
FAR struct idr_s *idr_init_base(int base);
void idr_destroy(FAR struct idr_s *idr);

26
libs/libc/misc/lib_idr.c
View File

@ -93,6 +93,32 @@ RB_GENERATE_STATIC(idr_tree_s, idr_node_s, link, idr_compare)
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: idr_find
****************************************************************************/
FAR void *idr_find(FAR struct idr_s *idr, unsigned int id)
{
FAR struct idr_node_s *node;
struct idr_node_s search;
search.id = id;
nxmutex_lock(&idr->lock);
node = RB_FIND(idr_tree_s, &idr->alloced, &search);
if (node == NULL)
{
nxmutex_unlock(&idr->lock);
return NULL;
}
nxmutex_unlock(&idr->lock);
return node->data;
}
/****************************************************************************
* Name: idr_get_next
****************************************************************************/
FAR void *idr_get_next(FAR struct idr_s *idr, FAR int *id)
{
FAR struct idr_node_s *node;