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qht: constify arguments to some internal functions

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These functions do not modify their @ht or @bucket arguments.
Constify those arguments.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Emilio G. Cota 2018-09-10 13:48:39 -04:00 committed by Richard Henderson
parent 6579f10779
commit 1911c8a3bd
1 changed files with 10 additions and 6 deletions
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16
util/qht.c
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@ -268,7 +268,8 @@ static void qht_map_unlock_buckets(struct qht_map *map)
* Call with at least a bucket lock held.
* @map should be the value read before acquiring the lock (or locks).
*/
static inline bool qht_map_is_stale__locked(struct qht *ht, struct qht_map *map)
static inline bool qht_map_is_stale__locked(const struct qht *ht,
const struct qht_map *map)
{
return map != ht->map;
}
@ -337,12 +338,12 @@ struct qht_bucket *qht_bucket_lock__no_stale(struct qht *ht, uint32_t hash,
return b;
}
static inline bool qht_map_needs_resize(struct qht_map *map)
static inline bool qht_map_needs_resize(const struct qht_map *map)
{
return atomic_read(&map->n_added_buckets) > map->n_added_buckets_threshold;
}
static inline void qht_chain_destroy(struct qht_bucket *head)
static inline void qht_chain_destroy(const struct qht_bucket *head)
{
struct qht_bucket *curr = head->next;
struct qht_bucket *prev;
@ -550,8 +551,11 @@ void *qht_lookup(const struct qht *ht, const void *userp, uint32_t hash)
return qht_lookup_custom(ht, userp, hash, ht->cmp);
}
/* call with head->lock held */
static void *qht_insert__locked(struct qht *ht, struct qht_map *map,
/*
* call with head->lock held
* @ht is const since it is only used for ht->cmp()
*/
static void *qht_insert__locked(const struct qht *ht, struct qht_map *map,
struct qht_bucket *head, void *p, uint32_t hash,
bool *needs_resize)
{
@ -645,7 +649,7 @@ bool qht_insert(struct qht *ht, void *p, uint32_t hash, void **existing)
return false;
}
static inline bool qht_entry_is_last(struct qht_bucket *b, int pos)
static inline bool qht_entry_is_last(const struct qht_bucket *b, int pos)
{
if (pos == QHT_BUCKET_ENTRIES - 1) {
if (b->next == NULL) {