__wait_event(wq, condition); \ } while (0) 这里只是先检测一遍条件,然后直接又调用__wait_event: // ${linux_source}/include/linux/wait.h#define__wait_event(wq, condition) \ do { \ DEFINE_WAIT(__wait); \ \ for (;;) { \ prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE); ...
19__wait_event(wq, condition); 20} while (0) 这里只是先检测一遍条件,然后直接又调用 __wait_event: 1// ${linux_source}/include/linux/wait.h 2#define__wait_event(wq, condition) 3do { 4DEFINE_WAIT(__wait); 5 6for (;;) { 7prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE); ...
eventQueue.wait(); }catch (InterruptedException e){ e.printStackTrace(); } } console(" the new event is submitted"); eventQueue.addLast(event); //多线程改为notifyAll()同时唤醒所有阻塞线程 eventQueue.notify(); } } //从队头获取数据,如果队头没有数据,工作线程阻塞 public Event take(){ synch...
size() == MAXQUEUE) { wait(); } messages.addElement(new java.util.Date().toString()); System.out.println("put message"); notify(); //Later, when the necessary event happens, the thread that is running it calls notify() from a block synchronized on the same object. } // Called ...
wait()和notify()的通常用法 A线程取得锁,执行wait(),释放锁; B线程取得锁,完成业务后执行notify(),再释放锁; B线程释放锁之后,A线程取得锁,继续执行wait()之后的代码; 关于synchronize修饰的代码块 通常,对于synchronize(lock){…}这样的代码块,编译后会生成monitorenter和monitorexit指令,线程执行到monitorenter指令...
一、通过阅读openjdk8的源码,分析和理解wait,notify在JVM中的具体执行过程; 二、修改JVM源码,编译构建成新的JVM,把我们感兴趣的参数打印出来,结合具体代码检查和我们的理解是否一致; 三、修改JVM源码,编译构建成新的JVM,按照我们的理解去修改关键参数,看能否达到预期效果; 现在,咱们一起开始既漫长又深入的wait、noti...
package design.event.event; import java.util.ArrayList; import java.util.List; import java.util.concurrent.*; /** * * @author fix * * @date 2021-04-16 7:06 * * @copyright Copyright (c) 2020 空服科技(深圳)有限公司 Inc. All Rights Reserved. ...
TEVENT (Wait) ; assert (Self->_Stalled ==0,"invariant") ; Self->_Stalled = intptr_t(this) ; jt->set_current_waiting_monitor(this);//create a node to be put into the queue//Critically, after we reset() the event but prior to park(), we must check//for a pending interrupt....
Java的wait()、notify()学习三部曲由三篇文章组成,内容分别是: 一、通过阅读openjdk8的源码,分析和理解wait,notify在JVM中的具体执行过程; 二、修改JVM源码,编译构建成新的JVM,把我们感兴趣的参数打印出来,结合具体代码检查和我们的理解是否一致; 三、修改JVM源码,编译构建成新的JVM,按照我们的理解去修改关键参数...
{TEVENT(slow_enter:release stacklock);return;}// Fall through to inflate() ...}elseif(mark->has_locker()&&THREAD->is_lock_owned((address)mark->locker())){//如果处于有锁状态,就检查是不是当前线程持有锁,如果是当前线程持有的,就return,然后就能执行同步代码块中的代码了assert(lock!=mark->...