| /* |
| * Copyright (c) 2010, 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. |
| * |
| */ |
| |
| #ifndef SHARE_GC_CMS_PROMOTIONINFO_INLINE_HPP |
| #define SHARE_GC_CMS_PROMOTIONINFO_INLINE_HPP |
| |
| #include "gc/cms/promotionInfo.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "utilities/debug.hpp" |
| #include "utilities/macros.hpp" |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // We go over the list of promoted objects, removing each from the list, |
| // and applying the closure (this may, in turn, add more elements to |
| // the tail of the promoted list, and these newly added objects will |
| // also be processed) until the list is empty. |
| // To aid verification and debugging, in the non-product builds |
| // we actually forward _promoHead each time we process a promoted oop. |
| // Note that this is not necessary in general (i.e. when we don't need to |
| // call PromotionInfo::verify()) because oop_iterate can only add to the |
| // end of _promoTail, and never needs to look at _promoHead. |
| |
| template <typename OopClosureType> |
| void PromotionInfo::promoted_oops_iterate(OopClosureType* cl) { |
| NOT_PRODUCT(verify()); |
| PromotedObject *curObj, *nextObj; |
| for (curObj = _promoHead; curObj != NULL; curObj = nextObj) { |
| if ((nextObj = curObj->next()) == NULL) { |
| /* protect ourselves against additions due to closure application |
| below by resetting the list. */ |
| assert(_promoTail == curObj, "Should have been the tail"); |
| _promoHead = _promoTail = NULL; |
| } |
| if (curObj->hasDisplacedMark()) { |
| /* restore displaced header */ |
| oop(curObj)->set_mark_raw(nextDisplacedHeader()); |
| } else { |
| /* restore prototypical header */ |
| oop(curObj)->init_mark_raw(); |
| } |
| /* The "promoted_mark" should now not be set */ |
| assert(!curObj->hasPromotedMark(), |
| "Should have been cleared by restoring displaced mark-word"); |
| NOT_PRODUCT(_promoHead = nextObj); |
| if (cl != NULL) oop(curObj)->oop_iterate(cl); |
| if (nextObj == NULL) { /* start at head of list reset above */ |
| nextObj = _promoHead; |
| } |
| } |
| assert(noPromotions(), "post-condition violation"); |
| assert(_promoHead == NULL && _promoTail == NULL, "emptied promoted list"); |
| assert(_spoolHead == _spoolTail, "emptied spooling buffers"); |
| assert(_firstIndex == _nextIndex, "empty buffer"); |
| } |
| |
| #endif // SHARE_GC_CMS_PROMOTIONINFO_INLINE_HPP |