1 /*
2 * Copyright (c) 2005, 2018, 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 *
866 oop referent = CompressedOops::decode_not_null(heap_oop);
867 return PSParallelCompact::mark_bitmap()->is_unmarked(referent)
868 && ReferenceProcessor::discover_reference(obj, type);
869 }
870 virtual bool discover_reference(oop obj, ReferenceType type) {
871 if (UseCompressedOops) {
872 return discover<narrowOop>(obj, type);
873 } else {
874 return discover<oop>(obj, type);
875 }
876 }
877 };
878
879 void PSParallelCompact::post_initialize() {
880 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
881 _span_based_discoverer.set_span(heap->reserved_region());
882 _ref_processor =
883 new PCReferenceProcessor(&_span_based_discoverer,
884 &_is_alive_closure); // non-header is alive closure
885
886 _counters = new CollectorCounters("PSParallelCompact", 1);
887
888 // Initialize static fields in ParCompactionManager.
889 ParCompactionManager::initialize(mark_bitmap());
890 }
891
892 bool PSParallelCompact::initialize() {
893 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
894 MemRegion mr = heap->reserved_region();
895
896 // Was the old gen get allocated successfully?
897 if (!heap->old_gen()->is_allocated()) {
898 return false;
899 }
900
901 initialize_space_info();
902 initialize_dead_wood_limiter();
903
904 if (!_mark_bitmap.initialize(mr)) {
905 vm_shutdown_during_initialization(
906 err_msg("Unable to allocate " SIZE_FORMAT "KB bitmaps for parallel "
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1 /*
2 * Copyright (c) 2005, 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 *
866 oop referent = CompressedOops::decode_not_null(heap_oop);
867 return PSParallelCompact::mark_bitmap()->is_unmarked(referent)
868 && ReferenceProcessor::discover_reference(obj, type);
869 }
870 virtual bool discover_reference(oop obj, ReferenceType type) {
871 if (UseCompressedOops) {
872 return discover<narrowOop>(obj, type);
873 } else {
874 return discover<oop>(obj, type);
875 }
876 }
877 };
878
879 void PSParallelCompact::post_initialize() {
880 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
881 _span_based_discoverer.set_span(heap->reserved_region());
882 _ref_processor =
883 new PCReferenceProcessor(&_span_based_discoverer,
884 &_is_alive_closure); // non-header is alive closure
885
886 _counters = new CollectorCounters("Parallel full collection pauses", 1);
887
888 // Initialize static fields in ParCompactionManager.
889 ParCompactionManager::initialize(mark_bitmap());
890 }
891
892 bool PSParallelCompact::initialize() {
893 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
894 MemRegion mr = heap->reserved_region();
895
896 // Was the old gen get allocated successfully?
897 if (!heap->old_gen()->is_allocated()) {
898 return false;
899 }
900
901 initialize_space_info();
902 initialize_dead_wood_limiter();
903
904 if (!_mark_bitmap.initialize(mr)) {
905 vm_shutdown_during_initialization(
906 err_msg("Unable to allocate " SIZE_FORMAT "KB bitmaps for parallel "
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