From 8b927107287094f018cc6f5addc543e79f88ec74 Mon Sep 17 00:00:00 2001 From: Vladimir Homutov Date: Mon, 21 Jun 2021 09:42:43 +0300 Subject: [PATCH] Core: added the ngx_rbtree_data() macro. --- src/core/ngx_rbtree.h | 3 +++ src/core/ngx_resolver.c | 4 +--- src/event/ngx_event_timer.c | 4 ++-- 3 files changed, 6 insertions(+), 5 deletions(-) diff --git a/src/core/ngx_rbtree.h b/src/core/ngx_rbtree.h index 97f0e3e11..e8c358213 100644 --- a/src/core/ngx_rbtree.h +++ b/src/core/ngx_rbtree.h @@ -47,6 +47,9 @@ struct ngx_rbtree_s { (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 58d5f3ec4..6d129e56a 100644 --- a/src/core/ngx_resolver.c +++ b/src/core/ngx_resolver.c @@ -51,9 +51,7 @@ typedef struct { } 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 698b88fae..35052bc29 100644 --- a/src/event/ngx_event_timer.c +++ b/src/event/ngx_event_timer.c @@ -73,7 +73,7 @@ ngx_event_expire_timers(void) 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 @@ ngx_event_no_timers_left(void) 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;