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1 /***** BEGIN LICENSE BLOCK *****
2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Common Public
5  * License Version 1.0 (the "License"); you may not use this file
6  * except in compliance with the License. You may obtain a copy of
7  * the License at http://www.eclipse.org/legal/cpl-v10.html
8  *
9  * Software distributed under the License is distributed on an "AS
10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * rights and limitations under the License.
13  *
14  * Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
15  * Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
16  * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
17  * Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
18  *
19  * Alternatively, the contents of this file may be used under the terms of
20  * either of the GNU General Public License Version 2 or later (the "GPL"),
21  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
22  * in which case the provisions of the GPL or the LGPL are applicable instead
23  * of those above. If you wish to allow use of your version of this file only
24  * under the terms of either the GPL or the LGPL, and not to allow others to
25  * use your version of this file under the terms of the CPL, indicate your
26  * decision by deleting the provisions above and replace them with the notice
27  * and other provisions required by the GPL or the LGPL. If you do not delete
28  * the provisions above, a recipient may use your version of this file under
29  * the terms of any one of the CPL, the GPL or the LGPL.
30  ***** END LICENSE BLOCK *****/
31 package org.jruby;
32
33 import org.jruby.runtime.CallbackFactory;
34 import org.jruby.runtime.builtin.IRubyObject;
35
36 /**
37  * GC (Garbage Collection) Module
38  *
39  * Note: Since we rely on Java's memory model we can't provide the
40  * kind of control over garbage collection that MRI provides.
41  *
42  * @author Anders
43  */
44 public class RubyGC {
45     public static RubyModule createGCModule(Ruby runtime) {
46         RubyModule result = runtime.defineModule("GC");
47         CallbackFactory callbackFactory = runtime.callbackFactory(RubyGC.class);
48         
49         result.defineFastModuleFunction("start", callbackFactory.getFastSingletonMethod("start"));
50         result.defineFastModuleFunction("garbage_collect", callbackFactory.getFastSingletonMethod("start"));
51         
52         return result;
53     }
54
55     public static IRubyObject start(IRubyObject recv) {
56         System.gc();
57         return recv.getRuntime().getNil();
58     }
59 }
60
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