| /* |
| * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package nsk.monitoring.share.thread; |
| |
| import nsk.share.log.Log; |
| import java.lang.management.ThreadInfo; |
| import java.lang.management.MonitorInfo; |
| import java.lang.management.LockInfo; |
| import nsk.share.TestBug; |
| import nsk.share.test.LocalRandom; |
| import nsk.monitoring.share.Monitoring; |
| |
| /** |
| * BlockedThread is RecursiveMonitoringThread that blocks on entering |
| * synchronized section. |
| */ |
| public class BlockedThread extends RecursiveMonitoringThread { |
| private LockerThread lockerThread; |
| protected Object lock; |
| protected Object readyLock = new Object(); |
| protected volatile boolean ready = false; |
| private static final String[] expectedMethods = { |
| "nsk.monitoring.share.thread.BlockedThread.runInside" |
| }; |
| |
| public BlockedThread(Log log, RunType recursionType, int maxDepth, LockerThread lockerThread) { |
| super(log, recursionType, maxDepth); |
| this.lockerThread = lockerThread; |
| this.lock = lockerThread.getLock(); |
| } |
| |
| public void checkThreadInfo(ThreadInfo info) { |
| super.checkThreadInfo(info); |
| verify(info.getThreadState() == Thread.State.BLOCKED, "ThreadInfo.getThreadState() = " + info.getThreadState() + " != " + Thread.State.BLOCKED); |
| verify(info.getBlockedTime() == 0 || info.getBlockedTime() == -1, "ThreadInfo.getBlockedTime() == " + info.getBlockedTime()); |
| verify(info.getBlockedCount() >= 1, "ThreadInfo.getBlockedCount() = " + info.getBlockedCount() + " != " + 1); |
| verify(info.getWaitedTime() == 0 || info.getWaitedTime() == -1, "ThreadInfo.getWaitedTime() == " + info.getWaitedTime()); |
| verify(info.getWaitedCount() == 0, "ThreadInfo.getWaitedCount() = " + info.getWaitedCount() + " != " + 0); |
| checkLockInfo(info.getLockInfo(), lock); |
| verify(info.getLockName().equals(info.getLockInfo().toString()), "ThreadInfo.getLockName() = " + info.getLockName() + " != lock.toString() = " + lock.toString()); |
| verify(info.getLockOwnerId() == lockerThread.getId(), "ThreadInfo.getLockOwnerId() = " + info.getLockOwnerId() + " != this.getId() = " + this.getId()); |
| verify(info.getLockOwnerName().equals(lockerThread.getName()), "ThreadInfo.getLockOwnerName() = " + info.getLockOwnerName() + " != lockerThread.getName() = " + lockerThread.getName()); |
| checkMonitorInfo(info.getLockedMonitors(), null); |
| checkSynchronizers(info.getLockedSynchronizers(), null); |
| } |
| |
| private void checkStackTrace(MonitorInfo[] minfo, StackTraceElement[] elements) { |
| verify(minfo.length == 1, "ThreadInfo.getLockedMonitors() is of length " + minfo.length); |
| MonitorInfo minfo1 = minfo[0]; |
| verify(minfo1.getLockedStackDepth() == elements.length, "MonitorInfo.getLockedStackDepth() = " + minfo1.getLockedStackDepth() + " != elements.length = " + elements.length); |
| verify(minfo1.getLockedStackFrame().equals(elements[elements.length - 1]), "MonitorInfo.getLockedStackFrame() = " + minfo1.getLockedStackFrame() + " is different from last element " + elements[elements.length - 1]); |
| checkLockInfo(minfo1, lock); |
| } |
| |
| public void waitState() { |
| synchronized (readyLock) { |
| while (!ready) { |
| try { |
| readyLock.wait(); |
| } catch (InterruptedException e) { |
| log.warn(e); |
| } |
| } |
| } |
| waitThreadState(Thread.State.BLOCKED); |
| } |
| |
| public void finish() { |
| ready = false; |
| synchronized (lock) { |
| lock.notify(); |
| } |
| } |
| |
| protected void runInside() { |
| synchronized (readyLock) { |
| ready = true; |
| readyLock.notifyAll(); |
| } |
| do { |
| synchronized (lock) { |
| System.out.println("BlockedThread acquired lock"); |
| |
| // Actually, this thread will reach here after LockerThread.finish() is called, |
| // but before finish() is called. But it does not matter, because check(ThreadInfo) |
| // was already called. |
| } |
| |
| System.out.println("BlockedThread relinquished lock"); |
| |
| } while (ready); |
| } |
| |
| protected boolean isStackTraceElementExpected(StackTraceElement element) { |
| return super.isStackTraceElementExpected(element) || checkStackTraceElement(element, expectedMethods); |
| } |
| } |