/*

 * Copyright 2002-2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

# include "incls/_precompiled.incl"

# include "incls/_cmsLockVerifier.cpp.incl"

///////////// Locking verification specific to CMS //////////////

// Much like "assert_lock_strong()", except that it relaxes the

// assertion somewhat for the parallel GC case, where VM thread

// or the CMS thread might hold the lock on behalf of the parallel

// threads. The second argument is in support of an extra locking

// check for CFL spaces' free list locks.

#ifndef PRODUCT

  if (!Universe::is_fully_initialized()) {

    return;

  }

  Thread* myThread = Thread::current();

  if (lock == NULL) { // a "lock-free" structure, e.g. MUT, protected by CMS token

    if (myThread->is_ConcurrentGC_thread()) {

      // This test might have to change in the future, if there can be

      // multiple peer CMS threads.  But for now, if we're testing the CMS

      assert(myThread == ConcurrentMarkSweepThread::cmst(),

             "In CMS, CMS thread is the only Conc GC thread.");

      assert(ConcurrentMarkSweepThread::cms_thread_has_cms_token(),

             "CMS thread should have CMS token");

    } else if (myThread->is_VM_thread()) {

      assert(ConcurrentMarkSweepThread::vm_thread_has_cms_token(),

             "VM thread should have CMS token");

    } else {

      // Token should be held on our behalf by one of the other

      // of CMS or VM thread; not enough easily testable

      // state info to test which here.

      assert(myThread->is_GC_task_thread(), "Unexpected thread type");

    }

    return;

  }

    assert_lock_strong(lock);

  } else {

  }

}

#endif