changeset 49111:8308de3f2573

8198896: Remove dead code: cardTableModRefBSForCTRS.hpp Reviewed-by: pliden, kbarrett
author eosterlund
date Fri, 02 Mar 2018 10:51:53 +0100
parents e6fbaf07192f
children 20ab04608e3f
files src/hotspot/share/gc/shared/cardTableModRefBSForCTRS.hpp
diffstat 1 files changed, 0 insertions(+), 153 deletions(-) [+]
line wrap: on
line diff
--- a/src/hotspot/share/gc/shared/cardTableModRefBSForCTRS.hpp	Fri Mar 02 11:06:51 2018 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,153 +0,0 @@
-/*
- * Copyright (c) 2015, 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_VM_GC_SHARED_CARDTABLEMODREFBSFORCTRS_HPP
-#define SHARE_VM_GC_SHARED_CARDTABLEMODREFBSFORCTRS_HPP
-
-#include "gc/shared/cardTableModRefBS.hpp"
-
-class CardTableRS;
-class DirtyCardToOopClosure;
-class OopsInGenClosure;
-
-// A specialization for the CardTableRS gen rem set.
-class CardTableModRefBSForCTRS: public CardTableModRefBS {
-  friend class CardTableRS;
-
-public:
-  CardTableModRefBSForCTRS(MemRegion whole_heap);
-  ~CardTableModRefBSForCTRS();
-
-  virtual void initialize();
-
-  void set_CTRS(CardTableRS* rs) { _rs = rs; }
-
-  virtual bool card_mark_must_follow_store() const {
-    return UseConcMarkSweepGC;
-  }
-
-  virtual bool is_in_young(oop obj) const;
-
-private:
-  CardTableRS* _rs;
-
-  // *** Support for parallel card scanning.
-
-  // dirty and precleaned are equivalent wrt younger_refs_iter.
-  static bool card_is_dirty_wrt_gen_iter(jbyte cv) {
-    return cv == dirty_card || cv == precleaned_card;
-  }
-
-  // Returns "true" iff the value "cv" will cause the card containing it
-  // to be scanned in the current traversal.  May be overridden by
-  // subtypes.
-  bool card_will_be_scanned(jbyte cv);
-
-  // Returns "true" iff the value "cv" may have represented a dirty card at
-  // some point.
-  bool card_may_have_been_dirty(jbyte cv);
-
-  // Iterate over the portion of the card-table which covers the given
-  // region mr in the given space and apply cl to any dirty sub-regions
-  // of mr. Clears the dirty cards as they are processed.
-  void non_clean_card_iterate_possibly_parallel(Space* sp, MemRegion mr,
-                                                OopsInGenClosure* cl, CardTableRS* ct,
-                                                uint n_threads);
-
-  // Work method used to implement non_clean_card_iterate_possibly_parallel()
-  // above in the parallel case.
-  void non_clean_card_iterate_parallel_work(Space* sp, MemRegion mr,
-                                            OopsInGenClosure* cl, CardTableRS* ct,
-                                            uint n_threads);
-
-  // This is an array, one element per covered region of the card table.
-  // Each entry is itself an array, with one element per chunk in the
-  // covered region.  Each entry of these arrays is the lowest non-clean
-  // card of the corresponding chunk containing part of an object from the
-  // previous chunk, or else NULL.
-  typedef jbyte*  CardPtr;
-  typedef CardPtr* CardArr;
-  CardArr* _lowest_non_clean;
-  size_t*  _lowest_non_clean_chunk_size;
-  uintptr_t* _lowest_non_clean_base_chunk_index;
-  volatile int* _last_LNC_resizing_collection;
-
-  // 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,
-                               jbyte**& lowest_non_clean,
-                               uintptr_t& lowest_non_clean_base_chunk_index,
-                               size_t& lowest_non_clean_chunk_size);
-
-  // Returns the number of chunks necessary to cover "mr".
-  size_t chunks_to_cover(MemRegion mr) {
-    return (size_t)(addr_to_chunk_index(mr.last()) -
-                    addr_to_chunk_index(mr.start()) + 1);
-  }
-
-  // Returns the index of the chunk in a stride which
-  // covers the given address.
-  uintptr_t addr_to_chunk_index(const void* addr) {
-    uintptr_t card = (uintptr_t) byte_for(addr);
-    return card / ParGCCardsPerStrideChunk;
-  }
-
-  // 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,
-                      jbyte** 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,
-                                jbyte** lowest_non_clean,
-                                uintptr_t lowest_non_clean_base_chunk_index,
-                                size_t    lowest_non_clean_chunk_size);
-
-};
-
-template<>
-struct BarrierSet::GetName<CardTableModRefBSForCTRS> {
-  static const BarrierSet::Name value = BarrierSet::CardTableForRS;
-};
-
-template<>
-struct BarrierSet::GetType<BarrierSet::CardTableForRS> {
-  typedef CardTableModRefBSForCTRS type;
-};
-
-#endif // SHARE_VM_GC_SHARED_CARDTABLEMODREFBSFORCTRS_HPP