From 6a23cf06e81127c6ed7a6b362ccaa391b94a1679 Mon Sep 17 00:00:00 2001
From: Igor Sysoev <igor@sysoev.ru>
Date: Fri, 12 Jan 2007 19:26:38 +0000
Subject: [PATCH] add comment

---
 src/event/ngx_event_timer.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/event/ngx_event_timer.c b/src/event/ngx_event_timer.c
index ababb819a..589de6d41 100644
--- a/src/event/ngx_event_timer.c
+++ b/src/event/ngx_event_timer.c
@@ -17,6 +17,11 @@ ngx_mutex_t  *ngx_event_timer_mutex;
 ngx_thread_volatile ngx_rbtree_t  ngx_event_timer_rbtree;
 static ngx_rbtree_node_t          ngx_event_timer_sentinel;
 
+/*
+ * the event timer rbtree may contain the duplicate keys, however,
+ * it should not be a problem, because we use the rbtree to find
+ * a minimum timer value only
+ */
 
 ngx_int_t
 ngx_event_timer_init(ngx_log_t *log)