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1
6 package org.logicalcobwebs.proxool;
7
8 import org.apache.commons.logging.Log;
9 import org.apache.commons.logging.LogFactory;
10
11 import java.lang.reflect.Method  ;
12 import java.lang.reflect.InvocationTargetException ;
13
14
22 class ShutdownHook implements Runnable {
23
24 private static final Log LOG = LogFactory.getLog(ShutdownHook.class);
25
26 private static boolean registered;
27
28 protected static void init() {
29 if (!registered) {
30 registered = true;
31 new ShutdownHook();
32 }
33 }
34
35 protected static void remove(Thread t) {
36 Runtime runtime = Runtime.getRuntime();
37 try {
38 final Method removeShutdownHookMethod = Runtime .class.getMethod("removeShutdownHook", new Class [] {Thread .class});
39 removeShutdownHookMethod.invoke(runtime, new Object [] {t});
40 if (LOG.isDebugEnabled()) {
41 LOG.debug("Removed shutdownHook");
42 }
43 } catch (NoSuchMethodException e) {
44 LOG.warn("Proxool will have to be shutdown manually with ProxoolFacade.shutdown() because this version of the JDK does not support Runtime.getRuntime().addShutdownHook()");
45 } catch (SecurityException e) {
46 LOG.error("Problem removing shutdownHook", e);
47 } catch (IllegalAccessException e) {
48 LOG.error("Problem removing shutdownHook", e);
49 } catch (InvocationTargetException e) {
50 Throwable cause = ((InvocationTargetException ) e).getTargetException();
52 if (cause instanceof IllegalStateException ) {
53 } else {
56 LOG.error("Problem removing shutdownHook", e);
57 }
58 }
59 }
60
61
64 private ShutdownHook() {
65 Thread t = new Thread (this);
66 t.setName("ShutdownHook");
67 Runtime runtime = Runtime.getRuntime();
68 try {
69 Method addShutdownHookMethod = Runtime .class.getMethod("addShutdownHook", new Class [] {Thread .class});
70 addShutdownHookMethod.invoke(runtime, new Object [] {t});
71 ProxoolFacade.setShutdownHook(t);
72 if (LOG.isDebugEnabled()) {
73 LOG.debug("Registered shutdownHook");
74 }
75 } catch (NoSuchMethodException e) {
76 LOG.warn("Proxool will have to be shutdown manually with ProxoolFacade.shutdown() because this version of the JDK does not support Runtime.getRuntime().addShutdownHook()");
77 } catch (SecurityException e) {
78 LOG.error("Problem registering shutdownHook", e);
79 } catch (IllegalAccessException e) {
80 LOG.error("Problem registering shutdownHook", e);
81 } catch (InvocationTargetException e) {
82 LOG.error("Problem registering shutdownHook", e);
83 }
84 }
85
86
91 public void run() {
92 if (ProxoolFacade.isShutdownHookEnabled()) {
93 LOG.debug("Running ShutdownHook");
94 Thread.currentThread().setName("Shutdown Hook");
95 ProxoolFacade.shutdown(0);
96 } else {
97 LOG.debug("Skipping ShutdownHook because it's been disabled");
98 }
99 }
100
101 }
102
103
104 |
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