首页 \ 问答 \ 一般信号量范围是什么?(what is general semaphores range?)

一般信号量范围是什么?(what is general semaphores range?)

一般信号量的范围是什么。 我知道它可以带有负值,0和1.负值表示阻塞队列中阻塞的进程数量。 0表示没有进程处于阻塞状态,1表示有一个资源可用,没有进程抢占它,我想知道是否有可能具有大于1的值(例如2),它是什么意思? 这是否意味着我们有单个信号量的多个资源?


What is the range of a general semaphore. I know that it can take negative values, 0 and 1. Negative values demonstrating the number of processes that are blocked in block queue. 0 means no process is in block and 1 means there is one resource available that no process have preempted it i want to know is it possible to have values greater than 1 for it.(2 for example) and what does it mean? Does it mean that we have more than one resource for a single semaphore?


原文:https://stackoverflow.com/questions/20656295
更新时间:2023-10-16 22:10

最满意答案

解决方案如下:(我们检查了cxf源,因为它包含很多拦截器,我们从那里得到了想法)

public class Interceptor extends AbstractPhaseInterceptor<Message> {
    private ObjectFactory objectFactory = new ObjectFactory();

    public Interceptor() {
        super(Phase.PRE_LOGICAL);
        addBefore(HolderOutInterceptor.class.getName());
    }

    @Override
    public void handleMessage(Message message) {
        MessageContentsList outObjects = MessageContentsList.getContentsList(message);
        Assert.isTrue(outObjects.size() == 1);
        Object outObject = outObjects.get(0);
        // object is our soap response
    }
}

The solution is as here: (we checked cxf sources because it contains a lot of interceptors, we got the ideas from there)

public class Interceptor extends AbstractPhaseInterceptor<Message> {
    private ObjectFactory objectFactory = new ObjectFactory();

    public Interceptor() {
        super(Phase.PRE_LOGICAL);
        addBefore(HolderOutInterceptor.class.getName());
    }

    @Override
    public void handleMessage(Message message) {
        MessageContentsList outObjects = MessageContentsList.getContentsList(message);
        Assert.isTrue(outObjects.size() == 1);
        Object outObject = outObjects.get(0);
        // object is our soap response
    }
}

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