--- a/src/event/ngx_event_timer.c
+++ b/src/event/ngx_event_timer.c
@@ -94,3 +94,45 @@ ngx_event_expire_timers(void)
         ev->handler(ev);
     }
 }
+
+
+void
+ngx_event_cancel_timers(void)
+{
+    ngx_event_t        *ev;
+    ngx_rbtree_node_t  *node, *root, *sentinel;
+
+    sentinel = ngx_event_timer_rbtree.sentinel;
+
+    for ( ;; ) {
+        root = ngx_event_timer_rbtree.root;
+
+        if (root == sentinel) {
+            return;
+        }
+
+        node = ngx_rbtree_min(root, sentinel);
+
+        ev = (ngx_event_t *) ((char *) node - offsetof(ngx_event_t, timer));
+
+        if (!ev->cancelable) {
+            return;
+        }
+
+        ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
+                       "event timer cancel: %d: %M",
+                       ngx_event_ident(ev->data), ev->timer.key);
+
+        ngx_rbtree_delete(&ngx_event_timer_rbtree, &ev->timer);
+
+#if (NGX_DEBUG)
+        ev->timer.left = NULL;
+        ev->timer.right = NULL;
+        ev->timer.parent = NULL;
+#endif
+
+        ev->timer_set = 0;
+
+        ev->handler(ev);
+    }
+}