The core design principle of the IsraFil Foundation in the Java Class Library
The concurrent framework of the Israfil Foundation is an important design in the Java class library, which provides the core mechanism of processing multi -threaded concurrency.When designing this concurrent framework, the Israfil Foundation follows some core design principles to ensure that the framework has high efficiency, reliability and easy use.
1. encapsulation (EncapSulation):
The parallel framework of the Israfil Foundation uses the principles of packaging to hide the details of implementation, and only provides the necessary interfaces for users to use.The advantage of this is to enhance the maintenance and scalability of the code, and at the same time, it also reduces the complexity of concurrent programming.The following is an example code implemented using the principle of encapsulation:
public class ConcurrentQueue<T> {
private Queue<T> queue = new LinkedList<>();
private Object lock = new Object();
public void enqueue(T item) {
synchronized (lock) {
queue.offer(item);
lock.notifyAll();
}
}
public T dequeue() throws InterruptedException {
synchronized (lock) {
while (queue.isEmpty()) {
lock.wait();
}
return queue.poll();
}
}
}
2. Thread Safety:
The design of concurrent frameworks should ensure thread security in multi -threaded environments to prevent data competition and memory problems.The concurrent mechanism of the Israfil Foundation uses a synchronization mechanism to ensure thread security. For example, the data structure of the keywords of the `Synchronized` keyword or the use of thread security.The following is a sample code for a thread security counter:
public class Counter {
private AtomicInteger count = new AtomicInteger(0);
public void increment() {
count.incrementAndGet();
}
public int getCount() {
return count.get();
}
}
3. Scalability:
The concurrent framework should have good scalability and can effectively meet the concurrent needs of different sizes.The concurrent framework of the Israfil Foundation uses appropriate concurrent data structures and algorithms to ensure high -performance performance in high concurrent scenes.The following is an example code for cache class that is used in HashMap:
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
public class Cache {
private Map<String, Object> cache = new ConcurrentHashMap<>();
public void put(String key, Object value) {
cache.put(key, value);
}
public Object get(String key) {
return cache.get(key);
}
}
4. DeadLock Avoidance:
The design of the concurrent framework should avoid the occurrence of dead locks, because the dead lock can cause the program to not continue to be executed.The concurrent framework of the Israfil Foundation uses strategies to avoid dead locks, such as avoiding multiple locks and using a fixed order of locks.Here are a sample code to obtain locks in a fixed order:
public class Account {
private int balance;
private Object lock1 = new Object();
private Object lock2 = new Object();
public void transfer(Account to, int amount) {
if (this.hashCode() < to.hashCode()) {
synchronized (lock1) {
synchronized (lock2) {
// Transfer implementation
}
}
} else if (this.hashCode() > to.hashCode()) {
synchronized (lock2) {
synchronized (lock1) {
// Transfer implementation
}
}
} else {
// Same account, do nothing
}
}
}
In summary, the concurrent framework of the Israfil Foundation conforms to the core principles such as packaging, thread security, scalability, and anti -lock avoidance.The application of these principles makes the concurrent framework in the Java library more stable, easy to use and efficient.Through reasonable application of these design principles, we can better handle multi -threaded concurrent situations to improve the performance and reliability of the program.
