From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Mon, 28 Oct 2019 19:24:36 +0000 (-0400)
Subject: cds_lfht_is_node_deleted parameter can be marked const
X-Git-Tag: v0.12.0~6
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=afa5940dbe80a259cf8bc4a99403554a3c2c9e32;p=userspace-rcu.git

cds_lfht_is_node_deleted parameter can be marked const

Mark the cds_lfht_node pointer parameter of cds_lfht_is_node_deleted
as const. The fact that this parameter is mutable makes it harder to
use liburcu in const-correct code.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/include/urcu/rculfhash.h b/include/urcu/rculfhash.h
index cbf513e..20b822f 100644
--- a/include/urcu/rculfhash.h
+++ b/include/urcu/rculfhash.h
@@ -499,7 +499,7 @@ int cds_lfht_del(struct cds_lfht *ht, struct cds_lfht_node *node);
  * This function does not issue any memory barrier.
  */
 extern
-int cds_lfht_is_node_deleted(struct cds_lfht_node *node);
+int cds_lfht_is_node_deleted(const struct cds_lfht_node *node);
 
 /*
  * cds_lfht_resize - Force a hash table resize
diff --git a/src/rculfhash.c b/src/rculfhash.c
index 811d515..51972c8 100644
--- a/src/rculfhash.c
+++ b/src/rculfhash.c
@@ -826,7 +826,7 @@ struct cds_lfht_node *clear_flag(struct cds_lfht_node *node)
 }
 
 static
-int is_removed(struct cds_lfht_node *node)
+int is_removed(const struct cds_lfht_node *node)
 {
 	return ((unsigned long) node) & REMOVED_FLAG;
 }
@@ -1830,7 +1830,7 @@ int cds_lfht_del(struct cds_lfht *ht, struct cds_lfht_node *node)
 	return ret;
 }
 
-int cds_lfht_is_node_deleted(struct cds_lfht_node *node)
+int cds_lfht_is_node_deleted(const struct cds_lfht_node *node)
 {
 	return is_removed(CMM_LOAD_SHARED(node->next));
 }