[cp-patches] FYI: Add shutdown hook to Command

[Raif S. Naffah]

hello all,

the attached patch --already committed-- adds a shutdown hook to the 
Command class in the keytool package.


2006-06-02  Raif S. Naffah  <[EMAIL PROTECTED]>

        * tools/gnu/classpath/tools/keytool/Command.java (shutdownThread): New 
field.
        (Command): Add the shutdown hook.
        (doCommand): Remove the shutdown hook.
        (ShutdownHook): New class.


cheers;
rsn

Index: Command.java
===================================================================
RCS file: /cvsroot/classpath/classpath/tools/gnu/classpath/tools/keytool/Command.java,v
retrieving revision 1.4
diff -u -r1.4 Command.java
--- Command.java	20 May 2006 01:40:10 -0000	1.4
+++ Command.java	1 Jun 2006 19:26:08 -0000
@@ -168,10 +168,17 @@
   private int providerNdx = -2;
   /** The callback handler to use when needing to interact with user. */
   private CallbackHandler handler;
+  /** The shutdown hook. */
+  private ShutdownHook shutdownThread;
 
   // Constructor(s) -----------------------------------------------------------
 
-  // default 0-arguments constructor
+  protected Command()
+  {
+    super();
+    shutdownThread = new ShutdownHook();
+    Runtime.getRuntime().addShutdownHook(shutdownThread);
+  }
 
   // Methods ------------------------------------------------------------------
 
@@ -201,6 +208,8 @@
     finally
       {
         teardown();
+        if (shutdownThread != null)
+          Runtime.getRuntime().removeShutdownHook(shutdownThread);
       }
   }
 
@@ -1157,4 +1166,15 @@
 
     return handler;
   }
+
+  // Inner class(es) ==========================================================
+
+  private class ShutdownHook
+      extends Thread
+  {
+    public void run()
+    {
+      teardown();
+    }
+  }
 }

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