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Articles by " WaitSet

Synchronized详解，同步互斥自旋锁分析。MonitorJVM底层实现原理-51CTO.COM

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By " WaitSet
| 51cto.com
如果一个对象有被修改的成员变量 被称为有状态的对象相反如果没有可被修改的成员变量 称为无状态的对象。 示例： public class MyThreadTest { public static void main(String[] args) { Runnable r = new MyThread(); Thread t1 = new Thread(r); Thread t2 = new Thread(r); t1.start(); t2.start(); } } class MyThread implements Runnable { /** * 如果一个对象有被修改的成员变量 被称为有状态的对象 * 相反如果没有可被修改的成员变量 称为无状态的对象 * * 由于两个线程同时访问有状态的对象 当一个线程x++完 * 此时另外一个线程又将x变成0 此时就会输出两次0 */ int x; @SneakyThrows @Override public void run() { x = 0; while (true) { System.out.println("result: " +...
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Java多线程篇(4)--wait/notify和park/unPark_贫僧洗发水呢的博客-CSDN博客

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By " WaitSet
| CSDN
Object - wait/notify ObjectSynchronizer::wait 从这段代码可以得到两个信息 1：wait() 底层是对象锁（就是synchronized底层实现的那个对象锁）。这也正是 wait/notify 要在同步代码块内的原因。 2：wait() 的调用会使得对象锁立马膨胀成重量级锁（因为需要使用mutex阻塞线程）。 ObjectMonitor::wait void ObjectMonitor::wait(jlong millis, bool interruptible, TRAPS) { ObjectWaiter node(Self); node.TState = ObjectWaiter::TS_WAIT ; Self->_ParkEvent->reset() ; OrderAccess::fence(); Thread::SpinAcquire (&_WaitSetLock, "WaitSet - add") ; AddWaiter (&node) ; Thread::SpinRelease (&_WaitSetLock) ; exit...
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synchronized中wait、notify的原理与源码 - bug的自我救赎 - 博客园

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By " Ljava, " WaitSet
| cnblogs.com
1.wait和notify的流程图 2.JVM源码 java层面wait的方法 public final native void wait(long timeout) throws InterruptedException; jvm中object.c static JNINativeMethod methods[] = { {"hashCode", "()I", (void *)&JVM_IHashCode}, {"wait", "(J)V", (void *)&JVM_MonitorWait}, {"notify", "()V", (void *)&JVM_MonitorNotify}, {"notifyAll", "()V", (void *)&JVM_MonitorNotifyAll}, {"clone", "()Ljava/lang/Object;", (void *)&JVM_Clone}, }; jvm层面wait方法的源码 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms))...
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