From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Sat, 3 Sep 2011 15:42:30 +0000 (-0400)
Subject: rculfhash: Check that init size is power of 2
X-Git-Tag: v0.7.0~43^2~188
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=8129be4e7b668906bdbb68c4d7c9fcb403ae977a;p=userspace-rcu.git

rculfhash: Check that init size is power of 2

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/rculfhash.c b/rculfhash.c
index 9aeb3e7..1720afb 100644
--- a/rculfhash.c
+++ b/rculfhash.c
@@ -621,6 +621,9 @@ struct cds_lfht *cds_lfht_new(cds_lfht_hash_fct hash_fct,
 	struct cds_lfht *ht;
 	unsigned long order;
 
+	/* init_size must be power of two */
+	if (init_size & (init_size - 1))
+		return NULL;
 	ht = calloc(1, sizeof(struct cds_lfht));
 	ht->hash_fct = hash_fct;
 	ht->compare_fct = compare_fct;