/*
 * This file is part of ClassGraph.
 *
 * Author: Johno Crawford (johno@sulake.com)
 *
 * Hosted at: https://github.com/classgraph/classgraph
 *
 * --
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 Johno Crawford
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without
 * limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
 * EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
 * OR OTHER DEALINGS IN THE SOFTWARE.
 */
package nonapi.io.github.classgraph.concurrency;

import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

/** A ThreadPoolExecutor that can be used in a try-with-resources block. */
public class AutoCloseableExecutorService extends ThreadPoolExecutor implements AutoCloseable {
    /**
     * A ThreadPoolExecutor that can be used in a try-with-resources block.
     * 
     * @param numThreads
     *            The number of threads to allocate.
     */
    public AutoCloseableExecutorService(final int numThreads) {
        super(numThreads, numThreads, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>(),
                new SimpleThreadFactory("ClassGraph-worker-", true));
    }

    /** Shut down thread pool on close(). */
    @Override
    public void close() {
        try {
            // Prevent new tasks being submitted
            shutdown();
        } catch (final Exception e) {
        }
        try {
            // Await termination of any running tasks
            awaitTermination(2500, TimeUnit.MILLISECONDS);
        } catch (final InterruptedException e) {
        }
        try {
            // Interrupt all the threads to terminate them, if awaitTermination() timed out
            shutdownNow();
        } catch (final Exception e) {
            throw new RuntimeException("Exception shutting down ExecutorService: " + e);
        }
    }
}

@@ -2251,32 +2251,40 @@
  %7D catch (final 
+Security
 Exception e) %7B%0A 
@@ -2282,33 +2282,91 @@
 on e) %7B%0A        
-%7D
+    // Ignore%0A        %7D%0A        boolean terminated = false;
 %0A        try %7B%0A 
@@ -2429,16 +2429,29 @@
         
+ terminated =
  awaitTe
@@ -2539,34 +2539,87 @@
 on e) %7B%0A        
-%7D%0A
+    // Ignore%0A        %7D%0A        if (!terminated) %7B%0A    
         try %7B%0A  
@@ -2608,32 +2608,36 @@
           try %7B%0A
+    
             // I
@@ -2716,32 +2716,36 @@
 out%0A            
+    
 shutdownNow();%0A 
@@ -2743,32 +2743,36 @@
 nNow();%0A        
+ 
+   
 %7D catch (final E
@@ -2770,16 +2770,24 @@
  (final 
+Security
 Exceptio
@@ -2785,32 +2785,36 @@
 yException e) %7B%0A
+    
             thro
@@ -2840,27 +2840,48 @@
 ion(
-%22Exception
+%0A                        %22Could not
  shut
-ting
  dow
@@ -2901,17 +2901,203 @@
 vice
-: %22 + e);
+ -- need java.lang.RuntimePermission(%5C%22modifyThread%5C%22), %22%0A                                + %22or the security manager's checkAccess method denies access%22,%0A                        e);%0A            %7D
 %0A   

Make shutdown cleaner