rculfhash: document max_nr_buckets = 0

[urcu.git] / urcu / rculfhash.h

diff --git a/urcu/rculfhash.h b/urcu/rculfhash.h
index 0a8abff3c7d226bb6e38873569edc480cee07013..7a411ad688ee92cbd753a7f04f798f355179beca 100644 (file)
--- a/urcu/rculfhash.h
+++ b/urcu/rculfhash.h
@@ -133,7 +133,8 @@ struct cds_lfht *_cds_lfht_new(unsigned long init_size,
  * @min_nr_alloc_buckets: the minimum number of allocated buckets.
  *                        (must be power of two)
  * @max_nr_buckets: the maximum number of hash table buckets allowed.
- *                  (must be power of two)
+ *                  (must be power of two, 0 is accepted, means
+ *                  "infinite")
  * @flags: hash table creation flags (can be combined with bitwise or: '|').
  *           0: no flags.
  *           CDS_LFHT_AUTO_RESIZE: automatically resize hash table.
@@ -177,7 +178,8 @@ struct cds_lfht *cds_lfht_new(unsigned long init_size,
  * Return 0 on success, negative error value on error.
  * Threads calling this API need to be registered RCU read-side threads.
  * cds_lfht_destroy should *not* be called from a RCU read-side critical
- * section.
+ * section. It should *not* be called from a call_rcu thread context
+ * neither.
  */
 extern
 int cds_lfht_destroy(struct cds_lfht *ht, pthread_attr_t **attr);
@@ -439,6 +441,8 @@ int cds_lfht_is_node_deleted(struct cds_lfht_node *node);
  *
  * Threads calling this API need to be registered RCU read-side threads.
  * This function does not (necessarily) issue memory barriers.
+ * cds_lfht_resize should *not* be called from a RCU read-side critical
+ * section.
  */
 extern
 void cds_lfht_resize(struct cds_lfht *ht, unsigned long new_size);