Update ngx_list.c

LLHFWT · Jun 20, 2022 · 2c97abf · 2c97abf
1 parent 6030c68
commit 2c97abf
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/core/ngx_list.c b/src/core/ngx_list.c
@@ -33,9 +33,9 @@ ngx_list_push(ngx_list_t *l)
     void             *elt;
     ngx_list_part_t  *last;
 
-    last = l->last;
+    last = l->last; // 访问最后一个链表节点
 
-    if (last->nelts == l->nalloc) {
+    if (last->nelts == l->nalloc) { // 如果最后一个节点已满
 
         /* the last part is full, allocate a new list part */
 
@@ -49,13 +49,15 @@ ngx_list_push(ngx_list_t *l)
             return NULL;
         }
 
+        // 更新last的指向
         last->nelts = 0;
         last->next = NULL;
 
         l->last->next = last;
         l->last = last;
     }
 
+    // 返回最后一个节点的下一个元素位置
     elt = (char *) last->elts + l->size * last->nelts;
     last->nelts++;