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src/hotspot/share/gc/g1/g1SurvivorRegions.cpp

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   1 /*
   2  * Copyright (c) 2015, 2019, 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  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc/g1/g1SurvivorRegions.hpp"
  27 #include "gc/g1/heapRegion.hpp"
  28 #include "utilities/growableArray.hpp"
  29 #include "utilities/debug.hpp"
  30 
  31 G1SurvivorRegions::G1SurvivorRegions() :
  32   _regions(new (ResourceObj::C_HEAP, mtGC) GrowableArray<HeapRegion*>(8, true, mtGC)),
  33   _used_bytes(0) {}
  34 
  35 void G1SurvivorRegions::add(HeapRegion* hr) {
  36   assert(hr->is_survivor(), "should be flagged as survivor region");
  37   _regions->append(hr);
  38 }
  39 
  40 uint G1SurvivorRegions::length() const {
  41   return (uint)_regions->length();
  42 }
  43 
  44 void G1SurvivorRegions::convert_to_eden() {
  45   for (GrowableArrayIterator<HeapRegion*> it = _regions->begin();
  46        it != _regions->end();
  47        ++it) {
  48     HeapRegion* hr = *it;
  49     hr->set_eden_pre_gc();
  50   }
  51   clear();
  52 }
  53 
  54 void G1SurvivorRegions::clear() {
  55   _regions->clear();
  56   _used_bytes = 0;
  57 }
  58 
  59 void G1SurvivorRegions::add_used_bytes(size_t used_bytes) {
  60   _used_bytes += used_bytes;
  61 }
   1 /*
   2  * Copyright (c) 2015, 2016, 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  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc/g1/g1SurvivorRegions.hpp"
  27 #include "gc/g1/heapRegion.hpp"
  28 #include "utilities/growableArray.hpp"
  29 #include "utilities/debug.hpp"
  30 
  31 G1SurvivorRegions::G1SurvivorRegions() : _regions(new (ResourceObj::C_HEAP, mtGC) GrowableArray<HeapRegion*>(8, true, mtGC)) {}


  32 
  33 void G1SurvivorRegions::add(HeapRegion* hr) {
  34   assert(hr->is_survivor(), "should be flagged as survivor region");
  35   _regions->append(hr);
  36 }
  37 
  38 uint G1SurvivorRegions::length() const {
  39   return (uint)_regions->length();
  40 }
  41 
  42 void G1SurvivorRegions::convert_to_eden() {
  43   for (GrowableArrayIterator<HeapRegion*> it = _regions->begin();
  44        it != _regions->end();
  45        ++it) {
  46     HeapRegion* hr = *it;
  47     hr->set_eden_pre_gc();
  48   }
  49   clear();
  50 }
  51 
  52 void G1SurvivorRegions::clear() {
  53   _regions->clear();

  54 }
  55 



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