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comparison src/fschmidt/util/java/ProxyIntoThread.java @ 68:00520880ad02

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add fschmidt source
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 05 Oct 2025 17:24:15 -0600
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67:9d0fefce6985 68:00520880ad02
1 /*
2 Copyright (c) 2008 Franklin Schmidt <fschmidt@gmail.com>
3
4 Permission is hereby granted, free of charge, to any person obtaining a copy
5 of this software and associated documentation files (the "Software"), to deal
6 in the Software without restriction, including without limitation the rights
7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 copies of the Software, and to permit persons to whom the Software is
9 furnished to do so, subject to the following conditions:
10
11 The above copyright notice and this permission notice shall be included in
12 all copies or substantial portions of the Software.
13
14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 THE SOFTWARE.
21 */
22
23 package fschmidt.util.java;
24
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
27
28 import java.lang.reflect.Method;
29 import java.lang.reflect.InvocationTargetException;
30
31
32 public class ProxyIntoThread<T> extends ProxyClass<T> {
33 private static final Logger logger = LoggerFactory.getLogger(ProxyIntoThread.class);
34 private final long timeout;
35 private volatile Thread thread;
36 private final Object lock = new Object();
37 private boolean isCalling = false;
38 private Method method;
39 private Object[] args;
40 private Object rtn;
41 private Throwable ex;
42
43 public ProxyIntoThread(String threadName,long timeout,final T obj,Class<T> cls) {
44 super(obj,cls);
45 this.timeout = timeout;
46 logger.info("Name = " + threadName + " / timeout = " + timeout + " / isCalling = " + isCalling);
47 thread = new Thread(
48 new Runnable(){public void run(){
49 synchronized(lock) {
50 while(thread!=null) {
51 while( !isCalling ) {
52 try {
53 lock.wait(ProxyIntoThread.this.timeout);
54 } catch(InterruptedException e) {
55 logger.error("",e);
56 throw new RuntimeException(e);
57 }
58 if( !isCalling ) {
59 logger.error("timed out");
60 throw new RuntimeException("timed out");
61 }
62 }
63 try {
64 rtn = invoke(method,args);
65 } catch(Throwable e) {
66 ex = e;
67 } finally {
68 isCalling = false;
69 lock.notifyAll();
70 }
71 }
72 }
73 }}
74 , threadName
75 );
76 thread.start();
77 }
78
79 public Object invoke(Object proxy,Method method,Object[] args)
80 throws Throwable
81 {
82 synchronized(lock) {
83 if( thread==null )
84 throw new RuntimeException("thread died");
85 if( isCalling )
86 throw new RuntimeException("Already calling " + this.method.getName());
87 this.method = method;
88 this.args = args;
89 this.ex = null;
90 isCalling = true;
91 lock.notifyAll();
92 while( isCalling ) {
93 try {
94 lock.wait(timeout);
95 } catch(InterruptedException e) {
96 logger.error("",e);
97 throw new RuntimeException(e);
98 }
99 if( isCalling ) {
100 logger.error("timed out");
101 throw new RuntimeException("timed out");
102 }
103 }
104 if( ex != null )
105 throw ex;
106 return this.rtn;
107 }
108 }
109
110 public void stop() {
111 thread = null;
112 }
113 }