integrated winp so that Hudson can kill processes recursively on Windows.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@7016 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/Proc.java

@@ -3,6 +3,7 @@ package hudson;
 import hudson.remoting.Channel;
 import hudson.util.IOException2;
 import hudson.util.StreamCopyThread;
+import hudson.model.Hudson;
 
 import java.io.File;
 import java.io.IOException;
@@ -14,6 +15,8 @@ import java.util.concurrent.Future;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.jvnet.winp.WinProcess;
+
 /**
  * External process wrapper.
  *
@@ -144,17 +147,27 @@ public abstract class Proc {
                 return r;
             } catch (InterruptedException e) {
                 // aborting. kill the process
-                proc.destroy();
+                destroy();
                 throw e;
             }
         }
 
         @Override
         public void kill() throws InterruptedException, IOException {
-            proc.destroy();
+            destroy();
             join();
         }
 
+        /**
+         * Destroys the child process without join.
+         */
+        private void destroy() {
+            if(Hudson.isWindows())
+                new WinProcess(proc).killRecursively();
+            else
+                proc.destroy();
+        }
+
         private static class ByteCopier extends Thread {
             private final InputStream in;
             private final OutputStream out;