/*

 * Copyright (c) 2007, 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.

 *

 */

// Trim our work_queue so its length is below max at return

inline void Par_MarkRefsIntoAndScanClosure::trim_queue(uint max) {

  while (_work_queue->size() > max) {

    oop newOop;

    if (_work_queue->pop_local(newOop)) {

      assert(newOop->is_oop(), "Expected an oop");

      assert(_bit_map->isMarked((HeapWord*)newOop),

             "only grey objects on this stack");

      // iterate over the oops in this oop, marking and pushing

      // the ones in CMS heap (i.e. in _span).

      newOop->oop_iterate(&_par_pushAndMarkClosure);

    }

  }

}

#ifndef PRODUCT

void KlassRememberingOopClosure::check_remember_klasses() const {

  assert(_should_remember_klasses == must_remember_klasses(),

    "Should remember klasses in this context.");

}

#endif

void KlassRememberingOopClosure::remember_klass(Klass* k) {

  if (!_revisit_stack->push(oop(k))) {

    fatal("Revisit stack overflow in PushOrMarkClosure");

  }

  check_remember_klasses();

}

inline void PushOrMarkClosure::remember_mdo(DataLayout* v) {

  // TBD

}

void Par_KlassRememberingOopClosure::remember_klass(Klass* k) {

  if (!_revisit_stack->par_push(oop(k))) {

    fatal("Revisit stack overflow in Par_KlassRememberingOopClosure");

  }

  check_remember_klasses();

}

inline void Par_PushOrMarkClosure::remember_mdo(DataLayout* v) {

  // TBD

}

inline void PushOrMarkClosure::do_yield_check() {

  _parent->do_yield_check();

}

inline void Par_PushOrMarkClosure::do_yield_check() {

  _parent->do_yield_check();

}