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 #ifndef SERIALGC
26
27 // A HeapRegion is the smallest piece of a G1CollectedHeap that
28 // can be collected independently.
29
30 // NOTE: Although a HeapRegion is a Space, its
31 // Space::initDirtyCardClosure method must not be called.
32 // The problem is that the existence of this method breaks
33 // the independence of barrier sets from remembered sets.
34 // The solution is to remove this method from the definition
35 // of a Space.
36
37 class CompactibleSpace;
38 class ContiguousSpace;
39 class HeapRegionRemSet;
40 class HeapRegionRemSetIterator;
41 class HeapRegion;
42
43 // A dirty card to oop closure for heap regions. It
44 // knows how to get the G1 heap and how to use the bitmap
937 assert(new_list->tl() == NULL || new_list->tl()->is_on_unclean_list(),
938 "Better already be marked as on unclean list");
939 assert(new_list->hd() == NULL || !new_list->hd()->is_on_free_list(),
940 "Better not already be on free list");
941 assert(new_list->hd() == NULL || new_list->hd()->is_on_unclean_list(),
942 "Better already be marked as on unclean list");
943 EmptyNonHRegionList::prepend_list(new_list);
944 }
945 HeapRegion* pop() {
946 HeapRegion* res = RegionList::pop();
947 if (res != NULL) res->set_on_unclean_list(false);
948 return res;
949 }
950 };
951
952 // Local Variables: ***
953 // c-indentation-style: gnu ***
954 // End: ***
955
956 #endif // SERIALGC
|
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 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGION_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGION_HPP
27
28 #include "gc_implementation/g1/g1BlockOffsetTable.inline.hpp"
29 #include "gc_implementation/g1/g1_specialized_oop_closures.hpp"
30 #include "gc_implementation/g1/survRateGroup.hpp"
31 #include "gc_implementation/shared/ageTable.hpp"
32 #include "gc_implementation/shared/spaceDecorator.hpp"
33 #include "memory/space.inline.hpp"
34 #include "memory/watermark.hpp"
35
36 #ifndef SERIALGC
37
38 // A HeapRegion is the smallest piece of a G1CollectedHeap that
39 // can be collected independently.
40
41 // NOTE: Although a HeapRegion is a Space, its
42 // Space::initDirtyCardClosure method must not be called.
43 // The problem is that the existence of this method breaks
44 // the independence of barrier sets from remembered sets.
45 // The solution is to remove this method from the definition
46 // of a Space.
47
48 class CompactibleSpace;
49 class ContiguousSpace;
50 class HeapRegionRemSet;
51 class HeapRegionRemSetIterator;
52 class HeapRegion;
53
54 // A dirty card to oop closure for heap regions. It
55 // knows how to get the G1 heap and how to use the bitmap
948 assert(new_list->tl() == NULL || new_list->tl()->is_on_unclean_list(),
949 "Better already be marked as on unclean list");
950 assert(new_list->hd() == NULL || !new_list->hd()->is_on_free_list(),
951 "Better not already be on free list");
952 assert(new_list->hd() == NULL || new_list->hd()->is_on_unclean_list(),
953 "Better already be marked as on unclean list");
954 EmptyNonHRegionList::prepend_list(new_list);
955 }
956 HeapRegion* pop() {
957 HeapRegion* res = RegionList::pop();
958 if (res != NULL) res->set_on_unclean_list(false);
959 return res;
960 }
961 };
962
963 // Local Variables: ***
964 // c-indentation-style: gnu ***
965 // End: ***
966
967 #endif // SERIALGC
968
969 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGION_HPP
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