01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10: Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11: Suite 350, San Mateo, CA 94403, USA.
12:
13: db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14: WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: for more details.
17:
18: You should have received a copy of the GNU General Public License along
19: with this program; if not, write to the Free Software Foundation, Inc.,
20: 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21: package com.db4o.foundation;
22:
23: /**
24: * @sharpen.ignore
25: */
26: public class Lock4 {
27:
28: public Object run(Closure4 closure) throws Exception {
29: synchronized (this ) {
30: return closure.run();
31: }
32: }
33:
34: public Object run(SafeClosure4 closure) {
35: synchronized (this ) {
36: return closure.run();
37: }
38: }
39:
40: public void snooze(long timeout) {
41: try {
42: this .wait(timeout);
43: } catch (Exception e) {
44: }
45:
46: }
47:
48: public void awake() {
49: this.notify();
50: }
51: }
|