Core: added the ngx_rbtree_data() macro.
diff --git a/src/core/ngx_rbtree.h b/src/core/ngx_rbtree.h
index 97f0e3e..e8c3582 100644
--- a/src/core/ngx_rbtree.h
+++ b/src/core/ngx_rbtree.h
@@ -47,6 +47,9 @@
(tree)->sentinel = s; \
(tree)->insert = i
+#define ngx_rbtree_data(node, type, link) \
+ (type *) ((u_char *) (node) - offsetof(type, link))
+
void ngx_rbtree_insert(ngx_rbtree_t *tree, ngx_rbtree_node_t *node);
void ngx_rbtree_delete(ngx_rbtree_t *tree, ngx_rbtree_node_t *node);
diff --git a/src/core/ngx_resolver.c b/src/core/ngx_resolver.c
index 58d5f3e..6d129e5 100644
--- a/src/core/ngx_resolver.c
+++ b/src/core/ngx_resolver.c
@@ -51,9 +51,7 @@
} ngx_resolver_an_t;
-#define ngx_resolver_node(n) \
- (ngx_resolver_node_t *) \
- ((u_char *) (n) - offsetof(ngx_resolver_node_t, node))
+#define ngx_resolver_node(n) ngx_rbtree_data(n, ngx_resolver_node_t, node)
static ngx_int_t ngx_udp_connect(ngx_resolver_connection_t *rec);
diff --git a/src/event/ngx_event_timer.c b/src/event/ngx_event_timer.c
index 698b88f..35052bc 100644
--- a/src/event/ngx_event_timer.c
+++ b/src/event/ngx_event_timer.c
@@ -73,7 +73,7 @@
return;
}
- ev = (ngx_event_t *) ((char *) node - offsetof(ngx_event_t, timer));
+ ev = ngx_rbtree_data(node, ngx_event_t, timer);
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
"event timer del: %d: %M",
@@ -113,7 +113,7 @@
node;
node = ngx_rbtree_next(&ngx_event_timer_rbtree, node))
{
- ev = (ngx_event_t *) ((char *) node - offsetof(ngx_event_t, timer));
+ ev = ngx_rbtree_data(node, ngx_event_t, timer);
if (!ev->cancelable) {
return NGX_AGAIN;