diff -r 15e026239a6c -r fcdb8e7ead8f src/hotspot/share/gc/cms/cmsCardTable.hpp --- a/src/hotspot/share/gc/cms/cmsCardTable.hpp Fri Nov 08 14:54:17 2019 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,90 +0,0 @@ -/* - * Copyright (c) 2001, 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_CMSCARDTABLE_HPP -#define SHARE_GC_CMS_CMSCARDTABLE_HPP - -#include "gc/shared/cardTableRS.hpp" -#include "utilities/globalDefinitions.hpp" - -class DirtyCardToOopClosure; -class MemRegion; -class OopsInGenClosure; -class Space; - -class CMSCardTable : public CardTableRS { -private: - // Returns the number of chunks necessary to cover "mr". - size_t chunks_to_cover(MemRegion mr); - - // Returns the index of the chunk in a stride which - // covers the given address. - uintptr_t addr_to_chunk_index(const void* addr); - - // Initializes "lowest_non_clean" to point to the array for the region - // covering "sp", and "lowest_non_clean_base_chunk_index" to the chunk - // index of the corresponding to the first element of that array. - // Ensures that these arrays are of sufficient size, allocating if necessary. - // May be called by several threads concurrently. - void get_LNC_array_for_space(Space* sp, - CardValue**& lowest_non_clean, - uintptr_t& lowest_non_clean_base_chunk_index, - size_t& lowest_non_clean_chunk_size); - - // Apply cl, which must either itself apply dcto_cl or be dcto_cl, - // to the cards in the stride (of n_strides) within the given space. - void process_stride(Space* sp, - MemRegion used, - jint stride, int n_strides, - OopsInGenClosure* cl, - CardTableRS* ct, - CardValue** lowest_non_clean, - uintptr_t lowest_non_clean_base_chunk_index, - size_t lowest_non_clean_chunk_size); - - // Makes sure that chunk boundaries are handled appropriately, by - // adjusting the min_done of dcto_cl, and by using a special card-table - // value to indicate how min_done should be set. - void process_chunk_boundaries(Space* sp, - DirtyCardToOopClosure* dcto_cl, - MemRegion chunk_mr, - MemRegion used, - CardValue** lowest_non_clean, - uintptr_t lowest_non_clean_base_chunk_index, - size_t lowest_non_clean_chunk_size); - - virtual void verify_used_region_at_save_marks(Space* sp) const NOT_DEBUG_RETURN; - -protected: - // Work method used to implement non_clean_card_iterate_possibly_parallel() - // above in the parallel case. - virtual void non_clean_card_iterate_parallel_work(Space* sp, MemRegion mr, - OopsInGenClosure* cl, CardTableRS* ct, - uint n_threads); - -public: - CMSCardTable(MemRegion whole_heap); -}; - -#endif // SHARE_GC_CMS_CMSCARDTABLE_HPP