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Thread.interrupted() 调用t.interrupt()后，第一次返回true, 第2次及之后都返回false jdk源码 其实都是空方法 public static boolean interrupted() { return currentThread().isInterrupted(true); // ClearInterrupted } private native boolean isInterrupted(boolean ClearInterrupted); JVM_

EPool.c epollCreate JNIEXPORT jint JNICALL Java_sun_nio_ch_EPoll_epollCreate(JNIEnv *env, jclass c) { /* * epoll_create expects a size as a hint to the kernel about how to * dimension internal structures. We can't predict the size in advan

IA-32 IA-32 Assembly Language Reference Manual cmpxchg Compare and Exchange (cmpxchg)[486] cmpxchg{bwl} reg[8|16|32], r/m[8|16|32] Example cmpxchgb %cl, 1(%esi) cmpxchgl %edx, 4(%edi) https://docs.oracle.com/cd/E19455-01/806-3773/6jct9o0b0/index.html

compareAndSwapInt unsafe.compareAndSwapInt(this, valueOffset, expect, update) 接口定义 public final native boolean compareAndSwapInt(Object object, long offset, int expect, int update); unsafe.cpp Unsafe_CompareAndSwapInt UNSAFE_ENTRY(jboolean, Unsafe_Comp

# 线程中断方法 interrupt() # interrupt()方法中断后 第一次调用interrupted()，返回true # 之后调用interrupted()返回false，除非线程重新中断 interrupted() # interrupt()调用后，isInterrupted()返回true isInterrupted() demo1 # demo1 public static void main(String[] args) throws Exception{...

static ScheduledExecutorService executorService = new ScheduledThreadPoolExecutor(3, new ThreadFactory() { @Override public Thread newThread(Runnable r) { Thread thread = new Thread(r); thread.setDaemon(true); ..

wait和sleep区别: wait()方法必须在synchronized同步块或方法中 wait()方法会释放由synchronized锁上的对象锁，而sleep()则不会 由wait()方法形成的阻塞，可以通过针对同一个对象锁的synchronized作用域调用notify/notifyAll来唤醒； 而sleep()则无法被“唤醒”，其只能定时醒来或被interrupt()方法...

/** * The minimum priority that a thread can have. */ public final static int MIN_PRIORITY = 1; /** * The default priority that is assigned to a thread. */ publ...

#MyShutdownHook public class MyShutdownHook extends Thread{ public MyShutdownHook(String name){ super(name); } private static final MyShutdownHook myShutdownHook = new My...