1 /* 2 * Copyright (c) 2017, 2020, 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 #ifndef SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP 26 #define SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP 27 28 #include "gc/g1/g1FullGCOopClosures.hpp" 29 30 #include "gc/g1/g1Allocator.inline.hpp" 31 #include "gc/g1/g1FullCollector.inline.hpp" 32 #include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp" 33 #include "gc/g1/g1FullGCMarker.inline.hpp" 34 #include "gc/g1/heapRegionRemSet.hpp" 35 #include "gc/shared/slidingForwarding.inline.hpp" 36 #include "memory/iterator.inline.hpp" 37 #include "memory/universe.hpp" 38 #include "oops/access.inline.hpp" 39 #include "oops/compressedOops.inline.hpp" 40 #include "oops/oop.inline.hpp" 41 42 template <typename T> 43 inline void G1MarkAndPushClosure::do_oop_work(T* p) { 44 _marker->mark_and_push(p); 45 } 46 47 inline void G1MarkAndPushClosure::do_oop(oop* p) { 48 do_oop_work(p); 49 } 50 51 inline void G1MarkAndPushClosure::do_oop(narrowOop* p) { 52 do_oop_work(p); 53 } 54 55 inline bool G1MarkAndPushClosure::do_metadata() { 56 return true; 57 } 58 59 inline void G1MarkAndPushClosure::do_klass(Klass* k) { 60 _marker->follow_klass(k); 61 } 62 63 inline void G1MarkAndPushClosure::do_cld(ClassLoaderData* cld) { 64 _marker->follow_cld(cld); 65 } 66 67 template <bool ALT_FWD> 68 template <class T> inline void G1AdjustClosure<ALT_FWD>::adjust_pointer(T* p) { 69 T heap_oop = RawAccess<>::oop_load(p); 70 if (CompressedOops::is_null(heap_oop)) { 71 return; 72 } 73 74 oop obj = CompressedOops::decode_not_null(heap_oop); 75 assert(Universe::heap()->is_in(obj), "should be in heap"); 76 if (!_collector->is_compacting(obj)) { 77 // We never forward objects in non-compacting regions so there is no need to 78 // process them further. 79 return; 80 } 81 82 if (!SlidingForwarding::is_forwarded(obj)) { 83 // Not forwarded, return current reference. 84 /* 85 assert(obj->mark() == markWord::prototype_for_klass(obj->klass()) || // Correct mark 86 obj->mark_must_be_preserved() || // Will be restored by PreservedMarksSet 87 (UseBiasedLocking && obj->has_bias_pattern()), // Will be restored by BiasedLocking 88 "Must have correct prototype or be preserved, obj: " PTR_FORMAT ", mark: " PTR_FORMAT ", prototype: " PTR_FORMAT, 89 p2i(obj), obj->mark().value(), markWord::prototype_for_klass(obj->klass()).value()); 90 */ 91 return; 92 } 93 94 // Forwarded, just update. 95 oop forwardee = SlidingForwarding::forwardee<ALT_FWD>(obj); 96 assert(G1CollectedHeap::heap()->is_in_reserved(forwardee), "should be in object space"); 97 RawAccess<IS_NOT_NULL>::oop_store(p, forwardee); 98 } 99 100 template <bool ALT_FWD> 101 inline void G1AdjustClosure<ALT_FWD>::do_oop(oop* p) { do_oop_work(p); } 102 template <bool ALT_FWD> 103 inline void G1AdjustClosure<ALT_FWD>::do_oop(narrowOop* p) { do_oop_work(p); } 104 105 inline bool G1IsAliveClosure::do_object_b(oop p) { 106 return _bitmap->is_marked(p) || _collector->is_skip_marking(p); 107 } 108 109 template<typename T> 110 inline void G1FullKeepAliveClosure::do_oop_work(T* p) { 111 _marker->mark_and_push(p); 112 } 113 114 #endif // SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP --- EOF ---