1 /* 2 * Copyright (c) 2017, 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 * 23 */ 24 25 #ifndef SHARE_VM_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP 26 #define SHARE_VM_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP 27 28 #include "gc/g1/g1Allocator.inline.hpp" 29 #include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp" 30 #include "gc/g1/g1FullGCMarker.inline.hpp" 31 #include "gc/g1/g1FullGCOopClosures.hpp" 32 #include "gc/g1/heapRegionRemSet.hpp" 33 #include "memory/iterator.inline.hpp" 34 #include "oops/access.inline.hpp" 35 #include "oops/compressedOops.inline.hpp" 36 #include "oops/oop.inline.hpp" 37 38 template <typename T> 39 inline void G1MarkAndPushClosure::do_oop_work(T* p) { 40 _marker->mark_and_push(p); 41 } 42 43 inline void G1MarkAndPushClosure::do_oop(oop* p) { 44 do_oop_work(p); 45 } 46 47 inline void G1MarkAndPushClosure::do_oop(narrowOop* p) { 48 do_oop_work(p); 49 } 50 51 inline bool G1MarkAndPushClosure::do_metadata() { 52 return true; 53 } 54 55 inline void G1MarkAndPushClosure::do_klass(Klass* k) { 56 _marker->follow_klass(k); 57 } 58 59 inline void G1MarkAndPushClosure::do_cld(ClassLoaderData* cld) { 60 _marker->follow_cld(cld); 61 } 62 63 template <class T> inline void G1AdjustClosure::adjust_pointer(T* p) { 64 T heap_oop = RawAccess<>::oop_load(p); 65 if (CompressedOops::is_null(heap_oop)) { 66 return; 67 } 68 69 oop obj = CompressedOops::decode_not_null(heap_oop); 70 assert(Universe::heap()->is_in(obj), "should be in heap"); 71 if (G1ArchiveAllocator::is_archive_object(obj)) { 72 // We never forward archive objects. 73 return; 74 } 75 76 oop forwardee = obj->forwardee(); 77 if (forwardee == NULL) { 78 // Not forwarded, return current reference. 79 assert(obj->mark_raw() == markOopDesc::prototype_for_object(obj) || // Correct mark 80 obj->mark_raw()->must_be_preserved(obj) || // Will be restored by PreservedMarksSet 81 (UseBiasedLocking && obj->has_bias_pattern_raw()), // Will be restored by BiasedLocking 82 "Must have correct prototype or be preserved, obj: " PTR_FORMAT ", mark: " PTR_FORMAT ", prototype: " PTR_FORMAT, 83 p2i(obj), p2i(obj->mark_raw()), p2i(markOopDesc::prototype_for_object(obj))); 84 return; 85 } 86 87 // Forwarded, just update. 88 assert(Universe::heap()->is_in_reserved(forwardee), "should be in object space"); 89 RawAccess<IS_NOT_NULL>::oop_store(p, forwardee); 90 } 91 92 inline void G1AdjustClosure::do_oop(oop* p) { do_oop_work(p); } 93 inline void G1AdjustClosure::do_oop(narrowOop* p) { do_oop_work(p); } 94 95 inline bool G1IsAliveClosure::do_object_b(oop p) { 96 return _bitmap->is_marked(p) || G1ArchiveAllocator::is_closed_archive_object(p); 97 } 98 99 template<typename T> 100 inline void G1FullKeepAliveClosure::do_oop_work(T* p) { 101 _marker->mark_and_push(p); 102 } 103 104 #endif