Web* Methods for creating, running and cleaning up after workers */ /** * Checks if a new worker can be added with respect to current * pool state and the given bound (either core or maximum). If so, * the worker count is adjusted accordingly, and, if possible, a * new worker is created and started, running firstTask as its * first task. Webpublic class ThreadPoolExecutor extends AbstractExecutorService { // 线程池状态,由两部分构造 runState workerCount // runState: 占2bit(29~30位) // workerCount: 占29bit(0~28位) // 符号位: 占1bit(最高位) private final AtomicInteger ctl = new AtomicInteger(ctlOf(RUNNING, 0)); // workerCount 最大容量: 2^29 - 1 private ...
ThreadPoolExecutor source code reading - programmer.help
WebAug 12, 2024 · 0.综述 ctl 是线程池源码中常常用到的一个变量。 它的主要作用是记录线程池的生命周期状态和当前工作的线程数。 ... (ctlOf(RUNNING, 0)); ... (工作线程数) 也将同 … Webprivate final AtomicInteger ctl = new AtomicInteger(ctlOf(RUNNING, 0)); // 29(32-3) private static final int COUNT_BITS = Integer.SIZE - 3; // 允许的最大工作线程(2^29-1 约5亿) private static final int CAPACITY = (1 2.线程状态的计算. 这里比较不好理解的是上述-1的位运算,下面我们来分析一下: the packing fraction in fcc lattice is
Código fuente de ThreadpoolExecutor - programador clic
Web2.1 总体设计. Java 中的线程池核心实现类是 ThreadPoolExecutor,本章基于 JDK 1.8 的源码来分析 Java 线程池的核心设计与实现。 WebCTOL. Aircraft landing on a runway. A conventional take-off and landing ( CTOL ), [1] also known as horizontal take-off and landing ( HTOL) is the process whereby conventional … WebMar 20, 2024 · isRunning 方法中,直接拿 ctl 的值和 SHUTDOWN 作比较。这个要先知道在 RUNNING 状态下,ctl 的值是什么样的。初始状态,ctl 的值是11100000 ... … shutdown xp with keyboard