本帖最后由 wnmmp 于 2014-8-7 23:09 编辑
这是JDK1.6 API里Condition接口里面多生产者多消费者生产消费多个蛋糕的模型,看了好久没有看懂,应该是没有具体对象,所以比较抽象,毕老师说这个开发时复制完拿来就能用,谁有这个代码的应用实例?
class BoundedBuffer {
final Lock lock = new ReentrantLock();
final Condition notFull = lock.newCondition();
final Condition notEmpty = lock.newCondition();
final Object[] items = new Object[100];
int putptr, takeptr, count;
public void put(Object x) throws InterruptedException {
lock.lock();
try {
while (count == items.length)
notFull.await();
items[putptr] = x;
if (++putptr == items.length) putptr = 0;
++count;
notEmpty.signal();
} finally {
lock.unlock();
}
}
public Object take() throws InterruptedException {
lock.lock();
try {
while (count == 0)
notEmpty.await();
Object x = items[takeptr];
if (++takeptr == items.length) takeptr = 0;
--count;
notFull.signal();
return x;
} finally {
lock.unlock();
}
}
}
|
|