01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jboss.aspects.asynch;
23:
24: import EDU.oswego.cs.dl.util.concurrent.Callable;
25: import EDU.oswego.cs.dl.util.concurrent.Executor;
26: import EDU.oswego.cs.dl.util.concurrent.FutureResult;
27: import EDU.oswego.cs.dl.util.concurrent.PooledExecutor;
28: import org.jboss.aop.Advisor;
29: import org.jboss.aop.joinpoint.MethodInvocation;
30:
31: /**
32: * Use a global thread pool to execute asynch tasks
33: *
34: * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
35: * @version $Revision: 57186 $
36: */
37: public class ThreadPoolExecutor implements ExecutorAbstraction {
38: private static Executor executor = new PooledExecutor();
39:
40: public void setAdvisor(Advisor advisor) {
41:
42: }
43:
44: public RemotableFuture execute(MethodInvocation invocation)
45: throws Exception {
46: final MethodInvocation copy = (MethodInvocation) invocation
47: .copy();
48: final ClassLoader cl = Thread.currentThread()
49: .getContextClassLoader();
50:
51: FutureResult result = new FutureResult();
52: Runnable command = result.setter(new Callable() {
53: public Object call() throws Exception {
54: try {
55: Thread.currentThread().setContextClassLoader(cl);
56: return copy.invokeNext();
57: } catch (Throwable throwable) {
58: if (throwable instanceof Exception) {
59: throw ((Exception) throwable);
60: } else
61: throw new Exception(throwable);
62: }
63: }
64: });
65: executor.execute(command);
66:
67: return new FutureImpl(result);
68: }
69:
70: }
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