Tue, 16 Sep 2014 14:27:40 +0200
8057768: Make heap region region type in G1 HeapRegion explicit
Reviewed-by: brutisso, tschatzl
tonyp@2472 | 1 | /* |
jwilhelm@6422 | 2 | * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved. |
tonyp@2472 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
tonyp@2472 | 4 | * |
tonyp@2472 | 5 | * This code is free software; you can redistribute it and/or modify it |
tonyp@2472 | 6 | * under the terms of the GNU General Public License version 2 only, as |
tonyp@2472 | 7 | * published by the Free Software Foundation. |
tonyp@2472 | 8 | * |
tonyp@2472 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
tonyp@2472 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
tonyp@2472 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
tonyp@2472 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
tonyp@2472 | 13 | * accompanied this code). |
tonyp@2472 | 14 | * |
tonyp@2472 | 15 | * You should have received a copy of the GNU General Public License version |
tonyp@2472 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
tonyp@2472 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
tonyp@2472 | 18 | * |
tonyp@2472 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
tonyp@2472 | 20 | * or visit www.oracle.com if you need additional information or have any |
tonyp@2472 | 21 | * questions. |
tonyp@2472 | 22 | * |
tonyp@2472 | 23 | */ |
tonyp@2472 | 24 | |
tonyp@2472 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP |
tonyp@2472 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP |
tonyp@2472 | 27 | |
tonyp@2472 | 28 | #include "gc_implementation/g1/heapRegionSet.hpp" |
tonyp@2472 | 29 | |
brutisso@6385 | 30 | inline void HeapRegionSetBase::add(HeapRegion* hr) { |
brutisso@6385 | 31 | check_mt_safety(); |
brutisso@6385 | 32 | assert(hr->containing_set() == NULL, hrs_ext_msg(this, "should not already have a containing set %u")); |
tschatzl@7050 | 33 | assert(hr->next() == NULL, hrs_ext_msg(this, "should not already be linked")); |
tschatzl@7050 | 34 | assert(hr->prev() == NULL, hrs_ext_msg(this, "should not already be linked")); |
tonyp@2472 | 35 | |
brutisso@6385 | 36 | _count.increment(1u, hr->capacity()); |
brutisso@6385 | 37 | hr->set_containing_set(this); |
brutisso@6385 | 38 | verify_region(hr); |
tonyp@2472 | 39 | } |
tonyp@2472 | 40 | |
brutisso@6385 | 41 | inline void HeapRegionSetBase::remove(HeapRegion* hr) { |
brutisso@6385 | 42 | check_mt_safety(); |
brutisso@6385 | 43 | verify_region(hr); |
tschatzl@7050 | 44 | assert(hr->next() == NULL, hrs_ext_msg(this, "should already be unlinked")); |
tschatzl@7050 | 45 | assert(hr->prev() == NULL, hrs_ext_msg(this, "should already be unlinked")); |
tonyp@2472 | 46 | |
tonyp@2472 | 47 | hr->set_containing_set(NULL); |
brutisso@6385 | 48 | assert(_count.length() > 0, hrs_ext_msg(this, "pre-condition")); |
brutisso@6385 | 49 | _count.decrement(1u, hr->capacity()); |
tonyp@2472 | 50 | } |
tonyp@2472 | 51 | |
jwilhelm@6422 | 52 | inline void FreeRegionList::add_ordered(HeapRegion* hr) { |
tschatzl@7050 | 53 | assert((length() == 0 && _head == NULL && _tail == NULL && _last == NULL) || |
jwilhelm@6422 | 54 | (length() > 0 && _head != NULL && _tail != NULL), |
jwilhelm@6422 | 55 | hrs_ext_msg(this, "invariant")); |
jwilhelm@6422 | 56 | // add() will verify the region and check mt safety. |
jwilhelm@6422 | 57 | add(hr); |
jwilhelm@6422 | 58 | |
jwilhelm@6422 | 59 | // Now link the region |
jwilhelm@6422 | 60 | if (_head != NULL) { |
jwilhelm@6422 | 61 | HeapRegion* curr; |
jwilhelm@6422 | 62 | |
tschatzl@7091 | 63 | if (_last != NULL && _last->hrm_index() < hr->hrm_index()) { |
jwilhelm@6422 | 64 | curr = _last; |
jwilhelm@6422 | 65 | } else { |
jwilhelm@6422 | 66 | curr = _head; |
jwilhelm@6422 | 67 | } |
jwilhelm@6422 | 68 | |
jwilhelm@6422 | 69 | // Find first entry with a Region Index larger than entry to insert. |
tschatzl@7091 | 70 | while (curr != NULL && curr->hrm_index() < hr->hrm_index()) { |
jwilhelm@6422 | 71 | curr = curr->next(); |
jwilhelm@6422 | 72 | } |
jwilhelm@6422 | 73 | |
jwilhelm@6422 | 74 | hr->set_next(curr); |
jwilhelm@6422 | 75 | |
jwilhelm@6422 | 76 | if (curr == NULL) { |
jwilhelm@6422 | 77 | // Adding at the end |
jwilhelm@6422 | 78 | hr->set_prev(_tail); |
jwilhelm@6422 | 79 | _tail->set_next(hr); |
jwilhelm@6422 | 80 | _tail = hr; |
jwilhelm@6422 | 81 | } else if (curr->prev() == NULL) { |
jwilhelm@6422 | 82 | // Adding at the beginning |
jwilhelm@6422 | 83 | hr->set_prev(NULL); |
jwilhelm@6422 | 84 | _head = hr; |
jwilhelm@6422 | 85 | curr->set_prev(hr); |
jwilhelm@6422 | 86 | } else { |
jwilhelm@6422 | 87 | hr->set_prev(curr->prev()); |
jwilhelm@6422 | 88 | hr->prev()->set_next(hr); |
jwilhelm@6422 | 89 | curr->set_prev(hr); |
jwilhelm@6422 | 90 | } |
jwilhelm@6422 | 91 | } else { |
jwilhelm@6422 | 92 | // The list was empty |
jwilhelm@6422 | 93 | _tail = hr; |
jwilhelm@6422 | 94 | _head = hr; |
jwilhelm@6422 | 95 | } |
jwilhelm@6422 | 96 | _last = hr; |
jwilhelm@6422 | 97 | } |
jwilhelm@6422 | 98 | |
tschatzl@7050 | 99 | inline HeapRegion* FreeRegionList::remove_from_head_impl() { |
tschatzl@7050 | 100 | HeapRegion* result = _head; |
tschatzl@7050 | 101 | _head = result->next(); |
tonyp@2472 | 102 | if (_head == NULL) { |
tonyp@2472 | 103 | _tail = NULL; |
jwilhelm@6422 | 104 | } else { |
jwilhelm@6422 | 105 | _head->set_prev(NULL); |
tonyp@2472 | 106 | } |
tschatzl@7050 | 107 | result->set_next(NULL); |
tschatzl@7050 | 108 | return result; |
tschatzl@7050 | 109 | } |
tschatzl@7050 | 110 | |
tschatzl@7050 | 111 | inline HeapRegion* FreeRegionList::remove_from_tail_impl() { |
tschatzl@7050 | 112 | HeapRegion* result = _tail; |
tschatzl@7050 | 113 | |
tschatzl@7050 | 114 | _tail = result->prev(); |
tschatzl@7050 | 115 | if (_tail == NULL) { |
tschatzl@7050 | 116 | _head = NULL; |
tschatzl@7050 | 117 | } else { |
tschatzl@7050 | 118 | _tail->set_next(NULL); |
tschatzl@7050 | 119 | } |
tschatzl@7050 | 120 | result->set_prev(NULL); |
tschatzl@7050 | 121 | return result; |
tschatzl@7050 | 122 | } |
tschatzl@7050 | 123 | |
tschatzl@7050 | 124 | inline HeapRegion* FreeRegionList::remove_region(bool from_head) { |
tschatzl@7050 | 125 | check_mt_safety(); |
tschatzl@7050 | 126 | verify_optional(); |
tschatzl@7050 | 127 | |
tschatzl@7050 | 128 | if (is_empty()) { |
tschatzl@7050 | 129 | return NULL; |
tschatzl@7050 | 130 | } |
tschatzl@7050 | 131 | assert(length() > 0 && _head != NULL && _tail != NULL, |
tschatzl@7050 | 132 | hrs_ext_msg(this, "invariant")); |
tschatzl@7050 | 133 | |
tschatzl@7050 | 134 | HeapRegion* hr; |
tschatzl@7050 | 135 | |
tschatzl@7050 | 136 | if (from_head) { |
tschatzl@7050 | 137 | hr = remove_from_head_impl(); |
tschatzl@7050 | 138 | } else { |
tschatzl@7050 | 139 | hr = remove_from_tail_impl(); |
tschatzl@7050 | 140 | } |
tonyp@2472 | 141 | |
jwilhelm@6422 | 142 | if (_last == hr) { |
jwilhelm@6422 | 143 | _last = NULL; |
jwilhelm@6422 | 144 | } |
jwilhelm@6422 | 145 | |
jwilhelm@6422 | 146 | // remove() will verify the region and check mt safety. |
brutisso@6385 | 147 | remove(hr); |
tonyp@2472 | 148 | return hr; |
tonyp@2472 | 149 | } |
tonyp@2472 | 150 | |
tschatzl@7050 | 151 | #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP |
tonyp@2472 | 152 |