1 /*
   2  * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *

 524   // OtherRegionsTable for why this is OK.
 525   assert(prt != NULL, "Inv");
 526 
 527   prt->add_reference(from);
 528 
 529   if (G1RecordHRRSOops) {
 530     HeapRegionRemSet::record(_hr, from);
 531     if (G1TraceHeapRegionRememberedSet) {
 532       gclog_or_tty->print("Added card " PTR_FORMAT " to region "
 533                           "[" PTR_FORMAT "...) for ref " PTR_FORMAT ".\n",
 534                           align_size_down(uintptr_t(from),
 535                                           CardTableModRefBS::card_size),
 536                           _hr->bottom(), from);
 537     }
 538   }
 539   assert(contains_reference(from), "We just added it!");
 540 }
 541 
 542 PerRegionTable*
 543 OtherRegionsTable::find_region_table(size_t ind, HeapRegion* hr) const {
 544   assert(0 <= ind && ind < _max_fine_entries, "Preconditions.");
 545   PerRegionTable* prt = _fine_grain_regions[ind];
 546   while (prt != NULL && prt->hr() != hr) {
 547     prt = prt->collision_list_next();
 548   }
 549   // Loop postcondition is the method postcondition.
 550   return prt;
 551 }
 552 
 553 jint OtherRegionsTable::_n_coarsenings = 0;
 554 
 555 PerRegionTable* OtherRegionsTable::delete_region_table() {
 556   assert(_m->owned_by_self(), "Precondition");
 557   assert(_n_fine_entries == _max_fine_entries, "Precondition");
 558   PerRegionTable* max = NULL;
 559   jint max_occ = 0;
 560   PerRegionTable** max_prev;
 561   size_t max_ind;
 562 
 563   size_t i = _fine_eviction_start;
 564   for (size_t k = 0; k < _fine_eviction_sample_size; k++) {

   1 /*
   2  * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *

 524   // OtherRegionsTable for why this is OK.
 525   assert(prt != NULL, "Inv");
 526 
 527   prt->add_reference(from);
 528 
 529   if (G1RecordHRRSOops) {
 530     HeapRegionRemSet::record(_hr, from);
 531     if (G1TraceHeapRegionRememberedSet) {
 532       gclog_or_tty->print("Added card " PTR_FORMAT " to region "
 533                           "[" PTR_FORMAT "...) for ref " PTR_FORMAT ".\n",
 534                           align_size_down(uintptr_t(from),
 535                                           CardTableModRefBS::card_size),
 536                           _hr->bottom(), from);
 537     }
 538   }
 539   assert(contains_reference(from), "We just added it!");
 540 }
 541 
 542 PerRegionTable*
 543 OtherRegionsTable::find_region_table(size_t ind, HeapRegion* hr) const {
 544   assert(ind < _max_fine_entries, "Preconditions.");
 545   PerRegionTable* prt = _fine_grain_regions[ind];
 546   while (prt != NULL && prt->hr() != hr) {
 547     prt = prt->collision_list_next();
 548   }
 549   // Loop postcondition is the method postcondition.
 550   return prt;
 551 }
 552 
 553 jint OtherRegionsTable::_n_coarsenings = 0;
 554 
 555 PerRegionTable* OtherRegionsTable::delete_region_table() {
 556   assert(_m->owned_by_self(), "Precondition");
 557   assert(_n_fine_entries == _max_fine_entries, "Precondition");
 558   PerRegionTable* max = NULL;
 559   jint max_occ = 0;
 560   PerRegionTable** max_prev;
 561   size_t max_ind;
 562 
 563   size_t i = _fine_eviction_start;
 564   for (size_t k = 0; k < _fine_eviction_sample_size; k++) {