1 /*
   2  * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any

  30 import java.security.PrivilegedAction;
  31 import sun.security.action.GetPropertyAction;
  32 import sun.security.action.GetIntegerAction;
  33 import jdk.internal.misc.InnocuousThread;
  34 
  35 /**
  36  * Encapsulates a thread pool associated with a channel group.
  37  */
  38 
  39 public class ThreadPool {
  40     private static final String DEFAULT_THREAD_POOL_THREAD_FACTORY =
  41         "java.nio.channels.DefaultThreadPool.threadFactory";
  42     private static final String DEFAULT_THREAD_POOL_INITIAL_SIZE =
  43         "java.nio.channels.DefaultThreadPool.initialSize";
  44 
  45     private final ExecutorService executor;
  46 
  47     // indicates if thread pool is fixed size
  48     private final boolean isFixed;
  49 
  50     // indicates the pool size (for a fixed thread pool configuratin this is
  51     // the maximum pool size; for other thread pools it is the initial size)
  52     private final int poolSize;
  53 
  54     private ThreadPool(ExecutorService executor,
  55                        boolean isFixed,
  56                        int poolSize)
  57     {
  58         this.executor = executor;
  59         this.isFixed = isFixed;
  60         this.poolSize = poolSize;
  61     }
  62 
  63     ExecutorService executor() {
  64         return executor;
  65     }
  66 
  67     boolean isFixedThreadPool() {
  68         return isFixed;
  69     }
  70 

   1 /*
   2  * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any

  30 import java.security.PrivilegedAction;
  31 import sun.security.action.GetPropertyAction;
  32 import sun.security.action.GetIntegerAction;
  33 import jdk.internal.misc.InnocuousThread;
  34 
  35 /**
  36  * Encapsulates a thread pool associated with a channel group.
  37  */
  38 
  39 public class ThreadPool {
  40     private static final String DEFAULT_THREAD_POOL_THREAD_FACTORY =
  41         "java.nio.channels.DefaultThreadPool.threadFactory";
  42     private static final String DEFAULT_THREAD_POOL_INITIAL_SIZE =
  43         "java.nio.channels.DefaultThreadPool.initialSize";
  44 
  45     private final ExecutorService executor;
  46 
  47     // indicates if thread pool is fixed size
  48     private final boolean isFixed;
  49 
  50     // indicates the pool size (for a fixed thread pool configuration this is
  51     // the maximum pool size; for other thread pools it is the initial size)
  52     private final int poolSize;
  53 
  54     private ThreadPool(ExecutorService executor,
  55                        boolean isFixed,
  56                        int poolSize)
  57     {
  58         this.executor = executor;
  59         this.isFixed = isFixed;
  60         this.poolSize = poolSize;
  61     }
  62 
  63     ExecutorService executor() {
  64         return executor;
  65     }
  66 
  67     boolean isFixedThreadPool() {
  68         return isFixed;
  69     }
  70