ReadWriteLock使用
1.概念#
读写锁的概念其实就是共享锁和排他锁,读锁就是共享锁,写锁就是排他锁。
2.使用#
import java.util.Random;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
public class TestReadWriteLock {
private static int value;
static ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
static Lock readLock = readWriteLock.readLock();
static Lock writeLock = readWriteLock.writeLock();
public static void read(Lock lock) {
try {
lock.lock();
Thread.sleep(1000);
//模拟读取操作
System.out.println("read over!");
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}
public static void write(Lock lock, int v) {
try {
lock.lock();
Thread.sleep(1000);
value = v;
//模拟写操作
System.out.println("write over!");
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}
public static void main(String[] args) {
Runnable readR = () -> read(readLock);
Runnable writeR = () -> write(writeLock, new Random().nextInt());
for (int i = 0; i < 18; i++) new Thread(readR).start();
for (int i = 0; i < 2; i++) new Thread(writeR).start();
}
}
【推荐】国内首个AI IDE,深度理解中文开发场景,立即下载体验Trae
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步
· 周边上新:园子的第一款马克杯温暖上架
· 分享 3 个 .NET 开源的文件压缩处理库,助力快速实现文件压缩解压功能!
· Ollama——大语言模型本地部署的极速利器
· DeepSeek如何颠覆传统软件测试?测试工程师会被淘汰吗?
· 使用C#创建一个MCP客户端