Java多线程-生产消费者2

阳光穿透心脏的1/2处 2022-07-21 05:44 205阅读 0赞

有关Java多线程-生产消费者，一个生产，多个线程消费，下面的代码模拟了整个过程，以及多线程中condition的用法。

![工作原理][20160713220900448]

Main.java

package com.packtpub.java7.concurrency.chapter2.recipe6.core;
    
    import com.packtpub.java7.concurrency.chapter2.recipe6.task.Buffer;
    import com.packtpub.java7.concurrency.chapter2.recipe6.task.Consumer;
    import com.packtpub.java7.concurrency.chapter2.recipe6.task.Producer;
    import com.packtpub.java7.concurrency.chapter2.recipe6.utils.FileMock;
    
    /** * Main class of the example * */
    public class Main { 
    
        /** * Main method of the example * @param args */
        public static void main(String[] args) {
            /** * Creates a simulated file with 100 lines */
            FileMock mock=new FileMock(101, 10);
    
            /** * Creates a buffer with a maximum of 20 lines */
            Buffer buffer=new Buffer(20);
    
            /** * Creates a producer and a thread to run it */
            Producer producer=new Producer(mock, buffer);
            Thread threadProducer=new Thread(producer,"Producer");
    
            /** * Creates three consumers and threads to run them */
            Consumer consumers[]=new Consumer[3];
            Thread threadConsumers[]=new Thread[3];
    
            for (int i=0; i<3; i++){
                consumers[i]=new Consumer(buffer);
                threadConsumers[i]=new Thread(consumers[i],"Consumer "+i);
            }
    
            /** * Strats the producer and the consumers */
            threadProducer.start();
            for (int i=0; i<3; i++){
                threadConsumers[i].start();
            }
        }
    
    }

FileMock.java 生产实体

package com.packtpub.java7.concurrency.chapter2.recipe6.utils;
    
    /** * This class simulates a text file. It creates a defined number * of random lines to process them sequentially. * */
    public class FileMock { 
    
        /** * Content of the simulate file */
        private String content[];
        /** * Number of the line we are processing */
        private int index;
    
        /** * Constructor of the class. Generate the random data of the file * @param size: Number of lines in the simulate file * @param length: Length of the lines */
        public FileMock(int size, int length){
            content=new String[size];
            for (int i=0; i<size; i++){
                StringBuilder buffer=new StringBuilder(length);
                buffer.append(i);
                for (int j=0; j<length; j++){
                    char randomWord;
                    if((int)(Math.random()*100) %2 == 0){
                        randomWord = (char)(int)(Math.random()*26+97);
                    }else{
                        randomWord = (char)(int)(Math.random()*26+65);
                    }
                    buffer.append(randomWord);
                }
                content[i]=buffer.toString();
            }
            index=0;
        }
    
        /** * Returns true if the file has more lines to process or false if not * @return true if the file has more lines to process or false if not */
        public boolean hasMoreLines(){
            return index<content.length;
        }
    
        /** * Returns the next line of the simulate file or null if there aren't more lines * @return */
        public String getLine(){
            if (this.hasMoreLines()) {
                String contentTemp = content[index++];
                System.out.println("Mock getLine: "+contentTemp+", file mock rest size: "+(content.length-index));
                return contentTemp;
            } 
            return null;
        }
    
    }

Buffer.java

package com.packtpub.java7.concurrency.chapter2.recipe6.task;
    
    import java.util.LinkedList;
    import java.util.concurrent.locks.Condition;
    import java.util.concurrent.locks.ReentrantLock;
    
    /** * This class implements a buffer to stores the simulate file lines between the * producer and the consumers * */
    public class Buffer { 
    
        /** * The buffer */
        private LinkedList<String> buffer;
    
        /** * Size of the buffer */
        private int maxSize;
    
        /** * Lock to control the access to the buffer */
        private ReentrantLock lock;
    
        /** * Conditions to control that the buffer has lines and has empty space */
        private Condition lines;
        private Condition space;
    
        /** * Attribute to control where are pending lines in the buffer */
        private boolean pendingLines;
    
        /** * Constructor of the class. Initialize all the objects * * @param maxSize * The size of the buffer */
        public Buffer(int maxSize) {
            this.maxSize = maxSize;
            buffer = new LinkedList<>();
            lock = new ReentrantLock();
            lines = lock.newCondition();
            space = lock.newCondition();
            pendingLines = true;
        }
    
        /** * Insert a line in the buffer * * @param line * line to insert in the buffer */
        public void insert(String line) {
            lock.lock();
            try {
                while (buffer.size() == maxSize) {
                    space.await();
                }
                buffer.offer(line);
                System.out.printf("%s: buffer Inserted Line: %d, line content: %s\n", Thread.currentThread()
                        .getName(), buffer.size(), line);
                lines.signalAll();
            } catch (InterruptedException e) {
                e.printStackTrace();
            } finally {
                lock.unlock();
            }
        }
    
        /** * Returns a line from the buffer * * @return a line from the buffer */
        public String get() {
            String line=null;
            lock.lock();        
            try {
                while ((buffer.size() == 0) &&(hasPendingLines())) {
                    lines.await();
                }
    
                if (hasPendingLines()) {
                    line = buffer.poll();
                    System.out.printf("--- %s: Line Readed: %d, line content: %s\n",Thread.currentThread().getName(),buffer.size(), line);
                    space.signalAll();
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            } finally {
                lock.unlock();
            }
            return line;
        }
    
        /** * Establish the value of the variable * * @param pendingLines */
        public void setPendingLines(boolean pendingLines) {
            this.pendingLines = pendingLines;
        }
    
        /** * Returns the value of the variable * * @return the value of the variable */
        public boolean hasPendingLines() {
            return pendingLines || buffer.size() > 0;
        }
    
    }

Consumer.java

package com.packtpub.java7.concurrency.chapter2.recipe6.task;
    
    import java.util.Random;
    
    /** * This class reads line from the buffer and process it * */
    public class Consumer implements Runnable { 
    
        /** * The buffer */
        private Buffer buffer;
    
        /** * Constructor of the class. Initialize the buffer * @param buffer */
        public Consumer (Buffer buffer) {
            this.buffer=buffer;
        }
    
        /** * Core method of the consumer. While there are pending lines in the * buffer, try to read one. */
        @Override
        public void run() {
            while (buffer.hasPendingLines()) {
                String line=buffer.get();
                processLine(line);
            }
        }
    
        /** * Method that simulates the processing of a line. Waits 10 milliseconds * @param line */
        private void processLine(String line) {
            try {
                Random random=new Random();
                Thread.sleep(random.nextInt(100));
            } catch (InterruptedException e) {
                e.printStackTrace();
            }       
        }
    
    }

结果

> Mock getLine: 0CxPCRLomHK, file rest size: 100  
> Producer: buffer Inserted Line: 1, line content: 0CxPCRLomHK  
> Mock getLine: 1cBKAHMczfn, file rest size: 99  
> — Consumer 1: Line Readed: 0, line content: 0CxPCRLomHK  
> Producer: buffer Inserted Line: 1, line content: 1cBKAHMczfn  
> Mock getLine: 2eqiFkMvCvb, file rest size: 98  
> — Consumer 2: Line Readed: 0, line content: 1cBKAHMczfn  
> Producer: buffer Inserted Line: 1, line content: 2eqiFkMvCvb  
> Mock getLine: 3IuTHXukRuw, file rest size: 97  
> — Consumer 0: Line Readed: 0, line content: 2eqiFkMvCvb  
> Producer: buffer Inserted Line: 1, line content: 3IuTHXukRuw  
> Mock getLine: 4jCcRrwmREN, file rest size: 96  
> Producer: buffer Inserted Line: 2, line content: 4jCcRrwmREN  
> Mock getLine: 5AQfKvjIXGg, file rest size: 95  
> Producer: buffer Inserted Line: 3, line content: 5AQfKvjIXGg  
> Mock getLine: 6WFpRJraqNf, file rest size: 94  
> Producer: buffer Inserted Line: 4, line content: 6WFpRJraqNf  
> Mock getLine: 7gEghGXoSQN, file rest size: 93  
> Producer: buffer Inserted Line: 5, line content: 7gEghGXoSQN  
> Mock getLine: 8VsRSOqtMez, file rest size: 92  
> Producer: buffer Inserted Line: 6, line content: 8VsRSOqtMez  
> Mock getLine: 9fJIJjymZzM, file rest size: 91  
> Producer: buffer Inserted Line: 7, line content: 9fJIJjymZzM  
> Mock getLine: 10SNVPQuifJd, file rest size: 90  
> Producer: buffer Inserted Line: 8, line content: 10SNVPQuifJd  
> Mock getLine: 11VrQmfHiBJn, file rest size: 89  
> Producer: buffer Inserted Line: 9, line content: 11VrQmfHiBJn  
> Mock getLine: 12kPXHZQPUNQ, file rest size: 88  
> Producer: buffer Inserted Line: 10, line content: 12kPXHZQPUNQ  
> Mock getLine: 13AdamVwlUWL, file rest size: 87  
> Producer: buffer Inserted Line: 11, line content: 13AdamVwlUWL  
> Mock getLine: 14monarebeuP, file rest size: 86  
> Producer: buffer Inserted Line: 12, line content: 14monarebeuP  
> Mock getLine: 15ldeSGkfrsV, file rest size: 85  
> Producer: buffer Inserted Line: 13, line content: 15ldeSGkfrsV  
> Mock getLine: 16zIrDZyZXxp, file rest size: 84  
> Producer: buffer Inserted Line: 14, line content: 16zIrDZyZXxp  
> Mock getLine: 17iesVSEPFAH, file rest size: 83  
> Producer: buffer Inserted Line: 15, line content: 17iesVSEPFAH  
> Mock getLine: 18dAjqolHHkL, file rest size: 82  
> Producer: buffer Inserted Line: 16, line content: 18dAjqolHHkL  
> Mock getLine: 19WylOcKxquL, file rest size: 81  
> Producer: buffer Inserted Line: 17, line content: 19WylOcKxquL  
> Mock getLine: 20QKfQhYBjtq, file rest size: 80  
> Producer: buffer Inserted Line: 18, line content: 20QKfQhYBjtq  
> Mock getLine: 21MgxSEKOjbJ, file rest size: 79  
> Producer: buffer Inserted Line: 19, line content: 21MgxSEKOjbJ  
> Mock getLine: 22zWuvxkAYXk, file rest size: 78  
> Producer: buffer Inserted Line: 20, line content: 22zWuvxkAYXk  
> Mock getLine: 23MtytFebQew, file rest size: 77  
> — Consumer 1: Line Readed: 19, line content: 3IuTHXukRuw  
> Producer: buffer Inserted Line: 20, line content: 23MtytFebQew  
> Mock getLine: 24mXrZBEVrmL, file rest size: 76  
> — Consumer 2: Line Readed: 19, line content: 4jCcRrwmREN  
> Producer: buffer Inserted Line: 20, line content: 24mXrZBEVrmL  
> Mock getLine: 25yRnKkOsBBi, file rest size: 75  
> — Consumer 0: Line Readed: 19, line content: 5AQfKvjIXGg  
> Producer: buffer Inserted Line: 20, line content: 25yRnKkOsBBi  
> Mock getLine: 26zhidVgLcQd, file rest size: 74  
> — Consumer 2: Line Readed: 19, line content: 6WFpRJraqNf  
> Producer: buffer Inserted Line: 20, line content: 26zhidVgLcQd  
> Mock getLine: 27owclROdslC, file rest size: 73  
> — Consumer 0: Line Readed: 19, line content: 7gEghGXoSQN  
> Producer: buffer Inserted Line: 20, line content: 27owclROdslC  
> Mock getLine: 28xkViZWnnaP, file rest size: 72  
> — Consumer 1: Line Readed: 19, line content: 8VsRSOqtMez  
> Producer: buffer Inserted Line: 20, line content: 28xkViZWnnaP  
> Mock getLine: 29VqLyQVGjnC, file rest size: 71  
> — Consumer 1: Line Readed: 19, line content: 9fJIJjymZzM  
> Producer: buffer Inserted Line: 20, line content: 29VqLyQVGjnC  
> Mock getLine: 30RQAzdippjF, file rest size: 70  
> — Consumer 2: Line Readed: 19, line content: 10SNVPQuifJd  
> Producer: buffer Inserted Line: 20, line content: 30RQAzdippjF  
> Mock getLine: 31eOXTBiXxHt, file rest size: 69  
> — Consumer 2: Line Readed: 19, line content: 11VrQmfHiBJn  
> Producer: buffer Inserted Line: 20, line content: 31eOXTBiXxHt  
> Mock getLine: 32POBvwgdKGw, file rest size: 68  
> — Consumer 1: Line Readed: 19, line content: 12kPXHZQPUNQ  
> Producer: buffer Inserted Line: 20, line content: 32POBvwgdKGw  
> Mock getLine: 33ubvdpXOavd, file rest size: 67  
> — Consumer 1: Line Readed: 19, line content: 13AdamVwlUWL  
> — Consumer 0: Line Readed: 18, line content: 14monarebeuP  
> Producer: buffer Inserted Line: 19, line content: 33ubvdpXOavd  
> Mock getLine: 34xRSPhByFlT, file rest size: 66  
> Producer: buffer Inserted Line: 20, line content: 34xRSPhByFlT  
> Mock getLine: 35gugQuNfgWr, file rest size: 65  
> — Consumer 2: Line Readed: 19, line content: 15ldeSGkfrsV  
> Producer: buffer Inserted Line: 20, line content: 35gugQuNfgWr  
> Mock getLine: 36DqHuBavdVX, file rest size: 64  
> — Consumer 1: Line Readed: 19, line content: 16zIrDZyZXxp  
> Producer: buffer Inserted Line: 20, line content: 36DqHuBavdVX  
> Mock getLine: 37CbzXdiqvnN, file rest size: 63  
> — Consumer 0: Line Readed: 19, line content: 17iesVSEPFAH  
> Producer: buffer Inserted Line: 20, line content: 37CbzXdiqvnN  
> Mock getLine: 38qVnGwknTel, file rest size: 62  
> — Consumer 1: Line Readed: 19, line content: 18dAjqolHHkL  
> Producer: buffer Inserted Line: 20, line content: 38qVnGwknTel  
> Mock getLine: 39pengGLstxP, file rest size: 61  
> — Consumer 2: Line Readed: 19, line content: 19WylOcKxquL  
> Producer: buffer Inserted Line: 20, line content: 39pengGLstxP  
> Mock getLine: 40aZTBYdIxlF, file rest size: 60  
> — Consumer 0: Line Readed: 19, line content: 20QKfQhYBjtq  
> Producer: buffer Inserted Line: 20, line content: 40aZTBYdIxlF  
> Mock getLine: 41buLnxOrsJK, file rest size: 59  
> — Consumer 1: Line Readed: 19, line content: 21MgxSEKOjbJ  
> Producer: buffer Inserted Line: 20, line content: 41buLnxOrsJK  
> Mock getLine: 42etUtqrxJSm, file rest size: 58  
> — Consumer 2: Line Readed: 19, line content: 22zWuvxkAYXk  
> Producer: buffer Inserted Line: 20, line content: 42etUtqrxJSm  
> Mock getLine: 43wkDoSAoUWE, file rest size: 57  
> — Consumer 1: Line Readed: 19, line content: 23MtytFebQew  
> Producer: buffer Inserted Line: 20, line content: 43wkDoSAoUWE  
> Mock getLine: 44lJXxZqdodt, file rest size: 56  
> — Consumer 0: Line Readed: 19, line content: 24mXrZBEVrmL  
> Producer: buffer Inserted Line: 20, line content: 44lJXxZqdodt  
> Mock getLine: 45EAOZunlYxS, file rest size: 55  
> — Consumer 0: Line Readed: 19, line content: 25yRnKkOsBBi  
> Producer: buffer Inserted Line: 20, line content: 45EAOZunlYxS  
> Mock getLine: 46TqqGexuubA, file rest size: 54  
> — Consumer 0: Line Readed: 19, line content: 26zhidVgLcQd  
> Producer: buffer Inserted Line: 20, line content: 46TqqGexuubA  
> Mock getLine: 47lmOnxvUGxd, file rest size: 53  
> — Consumer 2: Line Readed: 19, line content: 27owclROdslC  
> Producer: buffer Inserted Line: 20, line content: 47lmOnxvUGxd  
> Mock getLine: 48mHvnUoagQR, file rest size: 52  
> — Consumer 1: Line Readed: 19, line content: 28xkViZWnnaP  
> Producer: buffer Inserted Line: 20, line content: 48mHvnUoagQR  
> Mock getLine: 49gBIVGjfyXy, file rest size: 51  
> — Consumer 2: Line Readed: 19, line content: 29VqLyQVGjnC  
> Producer: buffer Inserted Line: 20, line content: 49gBIVGjfyXy  
> Mock getLine: 50LKVfEGKLRG, file rest size: 50  
> — Consumer 0: Line Readed: 19, line content: 30RQAzdippjF  
> Producer: buffer Inserted Line: 20, line content: 50LKVfEGKLRG  
> Mock getLine: 51eWoQEPPdfa, file rest size: 49  
> — Consumer 0: Line Readed: 19, line content: 31eOXTBiXxHt  
> Producer: buffer Inserted Line: 20, line content: 51eWoQEPPdfa  
> Mock getLine: 52CxRbZeBYqR, file rest size: 48  
> — Consumer 1: Line Readed: 19, line content: 32POBvwgdKGw  
> Producer: buffer Inserted Line: 20, line content: 52CxRbZeBYqR  
> Mock getLine: 53ycKrdNhKMx, file rest size: 47  
> — Consumer 1: Line Readed: 19, line content: 33ubvdpXOavd  
> Producer: buffer Inserted Line: 20, line content: 53ycKrdNhKMx  
> Mock getLine: 54gCdvdDirbi, file rest size: 46  
> — Consumer 2: Line Readed: 19, line content: 34xRSPhByFlT  
> Producer: buffer Inserted Line: 20, line content: 54gCdvdDirbi  
> Mock getLine: 55ldTQqEogtz, file rest size: 45  
> — Consumer 0: Line Readed: 19, line content: 35gugQuNfgWr  
> Producer: buffer Inserted Line: 20, line content: 55ldTQqEogtz  
> Mock getLine: 56KFgASfXUQP, file rest size: 44  
> — Consumer 2: Line Readed: 19, line content: 36DqHuBavdVX  
> Producer: buffer Inserted Line: 20, line content: 56KFgASfXUQP  
> Mock getLine: 57aOSHqBzyuK, file rest size: 43  
> — Consumer 2: Line Readed: 19, line content: 37CbzXdiqvnN  
> Producer: buffer Inserted Line: 20, line content: 57aOSHqBzyuK  
> Mock getLine: 58VjfmypmfbN, file rest size: 42  
> — Consumer 1: Line Readed: 19, line content: 38qVnGwknTel  
> Producer: buffer Inserted Line: 20, line content: 58VjfmypmfbN  
> Mock getLine: 59RTZcPYgwIq, file rest size: 41  
> — Consumer 0: Line Readed: 19, line content: 39pengGLstxP  
> Producer: buffer Inserted Line: 20, line content: 59RTZcPYgwIq  
> Mock getLine: 60xzYMJfzICm, file rest size: 40  
> — Consumer 0: Line Readed: 19, line content: 40aZTBYdIxlF  
> Producer: buffer Inserted Line: 20, line content: 60xzYMJfzICm  
> Mock getLine: 61sGhOxjkTtE, file rest size: 39  
> — Consumer 2: Line Readed: 19, line content: 41buLnxOrsJK  
> Producer: buffer Inserted Line: 20, line content: 61sGhOxjkTtE  
> Mock getLine: 62FfXRQflhfn, file rest size: 38  
> — Consumer 0: Line Readed: 19, line content: 42etUtqrxJSm  
> Producer: buffer Inserted Line: 20, line content: 62FfXRQflhfn  
> Mock getLine: 63JgtUIdmTNs, file rest size: 37  
> — Consumer 1: Line Readed: 19, line content: 43wkDoSAoUWE  
> Producer: buffer Inserted Line: 20, line content: 63JgtUIdmTNs  
> Mock getLine: 64WkujsGQBPa, file rest size: 36  
> — Consumer 2: Line Readed: 19, line content: 44lJXxZqdodt  
> Producer: buffer Inserted Line: 20, line content: 64WkujsGQBPa  
> Mock getLine: 65DSfSJuPfWN, file rest size: 35  
> — Consumer 1: Line Readed: 19, line content: 45EAOZunlYxS  
> Producer: buffer Inserted Line: 20, line content: 65DSfSJuPfWN  
> Mock getLine: 66EuVDEbQYpw, file rest size: 34  
> — Consumer 2: Line Readed: 19, line content: 46TqqGexuubA  
> Producer: buffer Inserted Line: 20, line content: 66EuVDEbQYpw  
> Mock getLine: 67jKcXsBkHOO, file rest size: 33  
> — Consumer 0: Line Readed: 19, line content: 47lmOnxvUGxd  
> Producer: buffer Inserted Line: 20, line content: 67jKcXsBkHOO  
> Mock getLine: 68tauuFMAKdJ, file rest size: 32  
> — Consumer 0: Line Readed: 19, line content: 48mHvnUoagQR  
> Producer: buffer Inserted Line: 20, line content: 68tauuFMAKdJ  
> Mock getLine: 69cMKQtykJrg, file rest size: 31  
> — Consumer 1: Line Readed: 19, line content: 49gBIVGjfyXy  
> Producer: buffer Inserted Line: 20, line content: 69cMKQtykJrg  
> Mock getLine: 70riWdiqcMUq, file rest size: 30  
> — Consumer 2: Line Readed: 19, line content: 50LKVfEGKLRG  
> Producer: buffer Inserted Line: 20, line content: 70riWdiqcMUq  
> Mock getLine: 71yfAOjNgoCZ, file rest size: 29  
> — Consumer 0: Line Readed: 19, line content: 51eWoQEPPdfa  
> Producer: buffer Inserted Line: 20, line content: 71yfAOjNgoCZ  
> Mock getLine: 72VbiIxBIwkH, file rest size: 28  
> — Consumer 2: Line Readed: 19, line content: 52CxRbZeBYqR  
> Producer: buffer Inserted Line: 20, line content: 72VbiIxBIwkH  
> Mock getLine: 73aoehqBYgvK, file rest size: 27  
> — Consumer 1: Line Readed: 19, line content: 53ycKrdNhKMx  
> Producer: buffer Inserted Line: 20, line content: 73aoehqBYgvK  
> Mock getLine: 74sGMHTMIroD, file rest size: 26  
> — Consumer 2: Line Readed: 19, line content: 54gCdvdDirbi  
> Producer: buffer Inserted Line: 20, line content: 74sGMHTMIroD  
> Mock getLine: 75dMOqaBotel, file rest size: 25  
> — Consumer 2: Line Readed: 19, line content: 55ldTQqEogtz  
> Producer: buffer Inserted Line: 20, line content: 75dMOqaBotel  
> Mock getLine: 76PgaohcrhgC, file rest size: 24  
> — Consumer 1: Line Readed: 19, line content: 56KFgASfXUQP  
> Producer: buffer Inserted Line: 20, line content: 76PgaohcrhgC  
> Mock getLine: 77BsLmHtMexj, file rest size: 23  
> — Consumer 0: Line Readed: 19, line content: 57aOSHqBzyuK  
> Producer: buffer Inserted Line: 20, line content: 77BsLmHtMexj  
> Mock getLine: 78PoFhxWDEJS, file rest size: 22  
> — Consumer 2: Line Readed: 19, line content: 58VjfmypmfbN  
> Producer: buffer Inserted Line: 20, line content: 78PoFhxWDEJS  
> Mock getLine: 79jFKZXmDUrO, file rest size: 21  
> — Consumer 1: Line Readed: 19, line content: 59RTZcPYgwIq  
> Producer: buffer Inserted Line: 20, line content: 79jFKZXmDUrO  
> Mock getLine: 80RvLEZWBVef, file rest size: 20  
> — Consumer 0: Line Readed: 19, line content: 60xzYMJfzICm  
> Producer: buffer Inserted Line: 20, line content: 80RvLEZWBVef  
> Mock getLine: 81KTINBRaSbi, file rest size: 19  
> — Consumer 1: Line Readed: 19, line content: 61sGhOxjkTtE  
> Producer: buffer Inserted Line: 20, line content: 81KTINBRaSbi  
> Mock getLine: 82OyWHFkazUv, file rest size: 18  
> — Consumer 0: Line Readed: 19, line content: 62FfXRQflhfn  
> Producer: buffer Inserted Line: 20, line content: 82OyWHFkazUv  
> Mock getLine: 83YwZCgbDWjT, file rest size: 17  
> — Consumer 2: Line Readed: 19, line content: 63JgtUIdmTNs  
> Producer: buffer Inserted Line: 20, line content: 83YwZCgbDWjT  
> Mock getLine: 84lFjQGdfpzZ, file rest size: 16  
> — Consumer 1: Line Readed: 19, line content: 64WkujsGQBPa  
> Producer: buffer Inserted Line: 20, line content: 84lFjQGdfpzZ  
> Mock getLine: 85ZBUEJdOccS, file rest size: 15  
> — Consumer 0: Line Readed: 19, line content: 65DSfSJuPfWN  
> Producer: buffer Inserted Line: 20, line content: 85ZBUEJdOccS  
> Mock getLine: 86mSwgkfqtOG, file rest size: 14  
> — Consumer 2: Line Readed: 19, line content: 66EuVDEbQYpw  
> Producer: buffer Inserted Line: 20, line content: 86mSwgkfqtOG  
> Mock getLine: 87QJnfnCRGHg, file rest size: 13  
> — Consumer 1: Line Readed: 19, line content: 67jKcXsBkHOO  
> Producer: buffer Inserted Line: 20, line content: 87QJnfnCRGHg  
> Mock getLine: 88YvaIdiQDhd, file rest size: 12  
> — Consumer 1: Line Readed: 19, line content: 68tauuFMAKdJ  
> Producer: buffer Inserted Line: 20, line content: 88YvaIdiQDhd  
> Mock getLine: 89cXvSsGsuqn, file rest size: 11  
> — Consumer 2: Line Readed: 19, line content: 69cMKQtykJrg  
> Producer: buffer Inserted Line: 20, line content: 89cXvSsGsuqn  
> Mock getLine: 90EcNtrOGGuL, file rest size: 10  
> — Consumer 2: Line Readed: 19, line content: 70riWdiqcMUq  
> Producer: buffer Inserted Line: 20, line content: 90EcNtrOGGuL  
> Mock getLine: 91YTdsEgNipG, file rest size: 9  
> — Consumer 0: Line Readed: 19, line content: 71yfAOjNgoCZ  
> Producer: buffer Inserted Line: 20, line content: 91YTdsEgNipG  
> Mock getLine: 92tnREYmCUmj, file rest size: 8  
> — Consumer 1: Line Readed: 19, line content: 72VbiIxBIwkH  
> Producer: buffer Inserted Line: 20, line content: 92tnREYmCUmj  
> Mock getLine: 93kAcDvxDlOv, file rest size: 7  
> — Consumer 2: Line Readed: 19, line content: 73aoehqBYgvK  
> Producer: buffer Inserted Line: 20, line content: 93kAcDvxDlOv  
> Mock getLine: 94WHdxEUvuQu, file rest size: 6  
> — Consumer 0: Line Readed: 19, line content: 74sGMHTMIroD  
> Producer: buffer Inserted Line: 20, line content: 94WHdxEUvuQu  
> Mock getLine: 95OsWAFbnQzO, file rest size: 5  
> — Consumer 1: Line Readed: 19, line content: 75dMOqaBotel  
> Producer: buffer Inserted Line: 20, line content: 95OsWAFbnQzO  
> Mock getLine: 96dEJcxQULhP, file rest size: 4  
> — Consumer 2: Line Readed: 19, line content: 76PgaohcrhgC  
> Producer: buffer Inserted Line: 20, line content: 96dEJcxQULhP  
> Mock getLine: 97EwJlJPGrPI, file rest size: 3  
> — Consumer 1: Line Readed: 19, line content: 77BsLmHtMexj  
> Producer: buffer Inserted Line: 20, line content: 97EwJlJPGrPI  
> Mock getLine: 98eMgRjSYRDn, file rest size: 2  
> — Consumer 0: Line Readed: 19, line content: 78PoFhxWDEJS  
> Producer: buffer Inserted Line: 20, line content: 98eMgRjSYRDn  
> Mock getLine: 99uYHRmiuXFg, file rest size: 1  
> — Consumer 0: Line Readed: 19, line content: 79jFKZXmDUrO  
> Producer: buffer Inserted Line: 20, line content: 99uYHRmiuXFg  
> Mock getLine: 100aXvigwQtBC, file rest size: 0  
> — Consumer 0: Line Readed: 19, line content: 80RvLEZWBVef  
> Producer: buffer Inserted Line: 20, line content: 100aXvigwQtBC  
> — Consumer 0: Line Readed: 19, line content: 81KTINBRaSbi  
> — Consumer 1: Line Readed: 18, line content: 82OyWHFkazUv  
> — Consumer 2: Line Readed: 17, line content: 83YwZCgbDWjT  
> — Consumer 0: Line Readed: 16, line content: 84lFjQGdfpzZ  
> — Consumer 1: Line Readed: 15, line content: 85ZBUEJdOccS  
> — Consumer 2: Line Readed: 14, line content: 86mSwgkfqtOG  
> — Consumer 0: Line Readed: 13, line content: 87QJnfnCRGHg  
> — Consumer 0: Line Readed: 12, line content: 88YvaIdiQDhd  
> — Consumer 0: Line Readed: 11, line content: 89cXvSsGsuqn  
> — Consumer 2: Line Readed: 10, line content: 90EcNtrOGGuL  
> — Consumer 1: Line Readed: 9, line content: 91YTdsEgNipG  
> — Consumer 1: Line Readed: 8, line content: 92tnREYmCUmj  
> — Consumer 2: Line Readed: 7, line content: 93kAcDvxDlOv  
> — Consumer 2: Line Readed: 6, line content: 94WHdxEUvuQu  
> — Consumer 2: Line Readed: 5, line content: 95OsWAFbnQzO  
> — Consumer 0: Line Readed: 4, line content: 96dEJcxQULhP  
> — Consumer 2: Line Readed: 3, line content: 97EwJlJPGrPI  
> — Consumer 1: Line Readed: 2, line content: 98eMgRjSYRDn  
> — Consumer 0: Line Readed: 1, line content: 99uYHRmiuXFg  
> — Consumer 1: Line Readed: 0, line content: 100aXvigwQtBC

代码来自《Java7并发实践手册》

[20160713220900448]: /images/20220720/5f2e7c666cf9410288b1003ac6ca460f.png