FilesExpand file tree

master

/

ReadWriteLockTest.java

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

72 lines (67 loc) · 2.24 KB

master

/

ReadWriteLockTest.java

Copy path

Top

File metadata and controls

• Code
• Blame

72 lines (67 loc) · 2.24 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

package dev.wenbo.TIJ;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import java.util.concurrent.locks.ReentrantReadWriteLock;

public class ReadWriteLockTest {

public static ReentrantReadWriteLock lock = new ReentrantReadWriteLock();

public static void main(String[] args) {

//同时写

ExecutorService service = Executors.newCachedThreadPool();

service.execute(new Runnable() {

@Override

public void run() {

writeFile(Thread.currentThread());

}

});

service.execute(new Runnable() {

@Override

public void run() {

writeFile(Thread.currentThread());

}

});

}

// 读操作

public static void readFile(Thread thread) {

lock.readLock().lock();

boolean readLock = lock.isWriteLocked();

if (!readLock) {

System.out.println("当前为读锁！");

}

try {

for (int i = 0; i < 5; i++) {

try {

Thread.sleep(20);

} catch (InterruptedException e) {

e.printStackTrace();

}

System.out.println(thread.getName() + ":正在进行读操作……");

}

System.out.println(thread.getName() + ":读操作完毕！");

} finally {

System.out.println("释放读锁！");

lock.readLock().unlock();

}

}

// 写操作

public static void writeFile(Thread thread) {

lock.writeLock().lock();

boolean writeLock = lock.isWriteLocked();

if (writeLock) {

System.out.println("当前为写锁！");

}

try {

for (int i = 0; i < 5; i++) {

try {

Thread.sleep(20);

} catch (InterruptedException e) {

e.printStackTrace();

}

System.out.println(thread.getName() + ":正在进行写操作……");

}

System.out.println(thread.getName() + ":写操作完毕！");

} finally {

System.out.println("释放写锁！");

lock.writeLock().unlock();

}

}

}