/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.joyplus.joylink.Utils;


public class ThreadPool {
    private static final String TAG = "ThreadPool";
    private static final int CORE_POOL_SIZE = 4;
    private static final int MAX_POOL_SIZE = 8;
    private static final int KEEP_ALIVE_TIME = 10; // 10 seconds

    // Resource type
    public static final int MODE_NONE = 0;
    public static final int MODE_CPU = 1;
    public static final int MODE_NETWORK = 2;

    public static final JobContext JOB_CONTEXT_STUB = new JobContextStub();

    ResourceCounter mCpuCounter = new ResourceCounter(2);
    ResourceCounter mNetworkCounter = new ResourceCounter(2);

    // A Job is like a Callable, but it has an addition JobContext parameter.
    public interface Job<T> {
        public T run(JobContext jc);
    }

    public interface JobContext {
        boolean isCancelled();
        void setCancelListener(CancelListener listener);
        boolean setMode(int mode);
    }

    private static class JobContextStub implements JobContext {
        @Override
        public boolean isCancelled() {
            return false;
        }

        @Override
        public void setCancelListener(CancelListener listener) {
        }

        @Override
        public boolean setMode(int mode) {
            return true;
        }
    }

    public interface CancelListener {
        public void onCancel();
    }

    private static class ResourceCounter {
        public int value;
        public ResourceCounter(int v) {
            value = v;
        }
    }
   
}