From 8ac9aa9f90b608421098efb563a065f8787dbd6f Mon Sep 17 00:00:00 2001
From: Teddy <ted.sybil@gmail.com>
Date: Thu, 15 Aug 2013 20:25:37 +0800
Subject: remove unnecessary std::set in gc

---
 gc.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'gc.h')

diff --git a/gc.h b/gc.h
index 9f1aca6..ad8ac6b 100644
--- a/gc.h
+++ b/gc.h
@@ -12,8 +12,12 @@ class GarbageCollector;
 
 #define GC_CYC_TRIGGER(ptr) \
 do { \
-    if ((ptr) && (ptr)->is_container() && !visited.count(ptr)) \
-        visited.insert(*tail++ = (ptr)); \
+    if ((ptr) && (ptr)->is_container() &&  \
+            !(static_cast<Container*>(ptr)->keep)) \
+    { \
+        static_cast<Container*>(ptr)->keep = true; \
+        *tail++ = (ptr); \
+    } \
 } while (0)
 
 #define GC_CYC_DEC(ptr) \
-- 
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