1.错误用法：在调用readLock()线程中进行中断

import java.util.concurrent.locks.LockSupport;
import java.util.concurrent.locks.StampedLock;

public class TestStampedLock {
    public static void main(String[] args) throws InterruptedException {
        final StampedLock lock = new StampedLock();
        new Thread() {
            public void run() {
                long readLong = lock.writeLock();
                LockSupport.parkNanos(6100000000L);
                lock.unlockWrite(readLong);
            }
        }.start();
        Thread.sleep(100);
        for (int i = 0; i < 3; ++i)
            new Thread(new OccupiedCPUReadThread(lock)).start();
    }

    private static class OccupiedCPUReadThread implements Runnable {
        private StampedLock lock;

        public OccupiedCPUReadThread(StampedLock lock) {
            this.lock = lock;
        }

        public void run() {
            Thread.currentThread().interrupt();
            long lockr = lock.readLock();
            System.out.println(Thread.currentThread().getName() + " get read lock");
            lock.unlockRead(lockr);
        }
    }
}

根据interrupt()中断行为研究可知，由于线程设置了中断标志，因此readLock() -> acquireRead(false, 0L)中的U.park(false, time)无法阻塞，会导致线程不断死循环（CPU爆满）。

    public long readLock() {
        long s = state, next;  // bypass acquireRead on common uncontended case
        return ((whead == wtail && (s & ABITS) < RFULL &&
                 U.compareAndSwapLong(this, STATE, s, next = s + RUNIT)) ?
                next : acquireRead(false, 0L));
    }

    private long acquireRead(boolean interruptible, long deadline) {
        WNode node = null, p;
        for (int spins = -1;;) {
            WNode h;
            if ((h = whead) == (p = wtail)) {
                for (long m, s, ns;;) {
                    if ((m = (s = state) & ABITS) < RFULL ?
                        U.compareAndSwapLong(this, STATE, s, ns = s + RUNIT) :
                        (m < WBIT && (ns = tryIncReaderOverflow(s)) != 0L))
                        return ns;
                    else if (m >= WBIT) {
                        if (spins > 0) {
                            if (LockSupport.nextSecondarySeed() >= 0)
                                --spins;
                        }
                        else {
                            if (spins == 0) {
                                WNode nh = whead, np = wtail;
                                if ((nh == h && np == p) || (h = nh) != (p = np))
                                    break;
                            }
                            spins = SPINS;
                        }
                    }
                }
            }
            if (p == null) { // initialize queue
                WNode hd = new WNode(WMODE, null);
                if (U.compareAndSwapObject(this, WHEAD, null, hd))
                    wtail = hd;
            }
            else if (node == null)
                node = new WNode(RMODE, p);
            else if (h == p || p.mode != RMODE) {
                if (node.prev != p)
                    node.prev = p;
                else if (U.compareAndSwapObject(this, WTAIL, p, node)) {
                    p.next = node;
                    break;
                }
            }
            else if (!U.compareAndSwapObject(p, WCOWAIT,
                                             node.cowait = p.cowait, node))
                node.cowait = null;
            else {
                for (;;) {
                    WNode pp, c; Thread w;
                    if ((h = whead) != null && (c = h.cowait) != null &&
                        U.compareAndSwapObject(h, WCOWAIT, c, c.cowait) &&
                        (w = c.thread) != null) // help release
                        U.unpark(w);
                    if (h == (pp = p.prev) || h == p || pp == null) {
                        long m, s, ns;
                        do {
                            if ((m = (s = state) & ABITS) < RFULL ?
                                U.compareAndSwapLong(this, STATE, s,
                                                     ns = s + RUNIT) :
                                (m < WBIT &&
                                 (ns = tryIncReaderOverflow(s)) != 0L))
                                return ns;
                        } while (m < WBIT);
                    }
                    if (whead == h && p.prev == pp) {
                        long time;
                        if (pp == null || h == p || p.status > 0) {
                            node = null; // throw away
                            break;
                        }
                        if (deadline == 0L)
                            time = 0L;
                        else if ((time = deadline - System.nanoTime()) <= 0L)
                            return cancelWaiter(node, p, false);
                        Thread wt = Thread.currentThread();
                        U.putObject(wt, PARKBLOCKER, this);
                        node.thread = wt;
                        if ((h != pp || (state & ABITS) == WBIT) &&
                            whead == h && p.prev == pp)
                            U.park(false, time);
                        node.thread = null;
                        U.putObject(wt, PARKBLOCKER, null);
                        if (interruptible && Thread.interrupted())
                            return cancelWaiter(node, p, true);
                    }
                }
            }
        }

        for (int spins = -1;;) {
            WNode h, np, pp; int ps;
            if ((h = whead) == p) {
                if (spins < 0)
                    spins = HEAD_SPINS;
                else if (spins < MAX_HEAD_SPINS)
                    spins <<= 1;
                for (int k = spins;;) { // spin at head
                    long m, s, ns;
                    if ((m = (s = state) & ABITS) < RFULL ?
                        U.compareAndSwapLong(this, STATE, s, ns = s + RUNIT) :
                        (m < WBIT && (ns = tryIncReaderOverflow(s)) != 0L)) {
                        WNode c; Thread w;
                        whead = node;
                        node.prev = null;
                        while ((c = node.cowait) != null) {
                            if (U.compareAndSwapObject(node, WCOWAIT,
                                                       c, c.cowait) &&
                                (w = c.thread) != null)
                                U.unpark(w);
                        }
                        return ns;
                    }
                    else if (m >= WBIT &&
                             LockSupport.nextSecondarySeed() >= 0 && --k <= 0)
                        break;
                }
            }
            else if (h != null) {
                WNode c; Thread w;
                while ((c = h.cowait) != null) {
                    if (U.compareAndSwapObject(h, WCOWAIT, c, c.cowait) &&
                        (w = c.thread) != null)
                        U.unpark(w);
                }
            }
            if (whead == h) {
                if ((np = node.prev) != p) {
                    if (np != null)
                        (p = np).next = node;   // stale
                }
                else if ((ps = p.status) == 0)
                    U.compareAndSwapInt(p, WSTATUS, 0, WAITING);
                else if (ps == CANCELLED) {
                    if ((pp = p.prev) != null) {
                        node.prev = pp;
                        pp.next = node;
                    }
                }
                else {
                    long time;
                    if (deadline == 0L)
                        time = 0L;
                    else if ((time = deadline - System.nanoTime()) <= 0L)
                        return cancelWaiter(node, node, false);
                    Thread wt = Thread.currentThread();
                    U.putObject(wt, PARKBLOCKER, this);
                    node.thread = wt;
                    if (p.status < 0 &&
                        (p != h || (state & ABITS) == WBIT) &&
                        whead == h && node.prev == p)
                        U.park(false, time);
                    node.thread = null;
                    U.putObject(wt, PARKBLOCKER, null);
                    if (interruptible && Thread.interrupted())
                        return cancelWaiter(node, node, true);
                }
            }
        }
    }

2.中断情况应该使用readLockInterruptibly()

    public long readLockInterruptibly() throws InterruptedException {
        long next;
        if (!Thread.interrupted() &&
            (next = acquireRead(true, 0L)) != INTERRUPTED)
            return next;
        throw new InterruptedException();
    }