From: Yusuke Endoh <redmine@...>
Date: 2010-11-04T01:01:23+09:00
Subject: [ruby-dev:42524] [Ruby 1.9-Bug#4020][Open] Fiber#initialize causes memory leaks

Bug #4020: Fiber#initialize causes memory leaks
http://redmine.ruby-lang.org/issues/show/4020

起票者: Yusuke Endoh
ステータス: Open, 優先度: Normal
カテゴリ: core
ruby -v: ruby 1.9.3dev (2010-11-03 trunk 29679) [i686-linux]

遠藤です。

Fiber#initialize を複数回呼ぶとメモリリークします。

  f = Fiber.new {}
  loop { f.send(:initialize) { } }  #=> メモリ無限消費


diff --git a/cont.c b/cont.c
index b0b3f41..56ae843 100644
--- a/cont.c
+++ b/cont.c
@@ -971,6 +971,10 @@ fiber_t_alloc(VALUE fibval)
     rb_fiber_t *fib;
     rb_thread_t *th = GET_THREAD();
 
+    if (DATA_PTR(fibval) != 0) {
+	rb_raise(rb_eRuntimeError, "cannot initialize twice");
+    }
+
     THREAD_MUST_BE_RUNNING(th);
     fib = ALLOC(rb_fiber_t);
     memset(fib, 0, sizeof(rb_fiber_t));

-- 
Yusuke Endoh <mame@tsg.ne.jp>


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