java - Java 中的启动/暂停/恢复方法

Question

Possible Duplicate:
Start/Suspend/Resume/Suspend … a method invoked by other class

我想实现一个 Anytime k-NN 分类器，但我找不到在特定时间内调用“classify(...)”方法、暂停它、在该方法暂停之前获取可用结果的方法，恢复该方法特定的时间，暂停它，获取该方法暂停之前的可用结果，依此类推...

提前致谢!

Answer 1

我发布了PauseableThread最近在这里。

您可以使用ReadWriteLock 实现暂停。如果您每次遇到暂停机会时都会立即捕获一个写锁，那么您只需要暂停者捕获一个读锁来暂停您。

  // The lock.
  private final ReadWriteLock pause = new ReentrantReadWriteLock();

  // Block if pause has been called without a matching resume.
  private void blockIfPaused() throws InterruptedException {
    try {
      // Grab a write lock. Will block if a read lock has been taken.
      pause.writeLock().lockInterruptibly();
    } finally {
      // Release the lock immediately to avoid blocking when pause is called.
      pause.writeLock().unlock();
    }
  }

  // Pause the work. NB: MUST be balanced by a resume.
  public void pause() {
    // We can wait for a lock here.
    pause.readLock().lock();
  }

  // Resume the work. NB: MUST be balanced by a pause.
  public void resume() {
    // Release the lock.
    pause.readLock().unlock();
  }