1 /* 2 * Copyright (c) 2017, 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 #include "precompiled.hpp" 26 #include "gc/g1/g1CollectedHeap.hpp" 27 #include "gc/g1/g1FullGCMarker.inline.hpp" 28 #include "gc/g1/g1FullGCOopClosures.inline.hpp" 29 #include "gc/g1/g1_specialized_oop_closures.hpp" 30 #include "logging/logStream.hpp" 31 32 void G1MarkAndPushClosure::do_oop(oop* p) { 33 do_oop_nv(p); 34 } 35 36 void G1MarkAndPushClosure::do_oop(narrowOop* p) { 37 do_oop_nv(p); 38 } 39 40 bool G1MarkAndPushClosure::do_metadata() { 41 return do_metadata_nv(); 42 } 43 44 void G1MarkAndPushClosure::do_klass(Klass* k) { 45 do_klass_nv(k); 46 } 47 48 void G1MarkAndPushClosure::do_cld(ClassLoaderData* cld) { 49 do_cld_nv(cld); 50 } 51 52 G1AdjustAndRebuildClosure::G1AdjustAndRebuildClosure(uint worker_id) : 53 _worker_id(worker_id), 54 _compaction_delta(0), 55 _g1h(G1CollectedHeap::heap()) { } 56 57 void G1AdjustAndRebuildClosure::update_compaction_delta(oop obj) { 58 if (G1ArchiveAllocator::is_open_archive_object(obj)) { 59 _compaction_delta = 0; 60 return; 61 } 62 oop forwardee = obj->forwardee(); 63 if (forwardee == NULL) { 64 // Object not moved. 65 _compaction_delta = 0; 66 } else { 67 // Object moved to forwardee, calculate delta. 68 _compaction_delta = calculate_compaction_delta(obj, forwardee); 69 } 70 } 71 72 void G1AdjustClosure::do_oop(oop* p) { adjust_pointer(p); } 73 void G1AdjustClosure::do_oop(narrowOop* p) { adjust_pointer(p); } 74 75 void G1AdjustAndRebuildClosure::do_oop(oop* p) { do_oop_nv(p); } 76 void G1AdjustAndRebuildClosure::do_oop(narrowOop* p) { do_oop_nv(p); } 77 78 void G1FollowStackClosure::do_void() { _marker->drain_stack(); } 79 80 void G1FullKeepAliveClosure::do_oop(oop* p) { do_oop_work(p); } 81 void G1FullKeepAliveClosure::do_oop(narrowOop* p) { do_oop_work(p); } 82 83 G1VerifyOopClosure::G1VerifyOopClosure(VerifyOption option) : 84 _g1h(G1CollectedHeap::heap()), 85 _containing_obj(NULL), 86 _verify_option(option), 87 _cc(0), 88 _failures(false) { 89 } 90 91 void G1VerifyOopClosure::print_object(outputStream* out, oop obj) { 92 #ifdef PRODUCT 93 Klass* k = obj->klass(); 94 const char* class_name = InstanceKlass::cast(k)->external_name(); 95 out->print_cr("class name %s", class_name); 96 #else // PRODUCT 97 obj->print_on(out); 98 #endif // PRODUCT 99 } 100 101 template <class T> void G1VerifyOopClosure::do_oop_nv(T* p) { 102 T heap_oop = oopDesc::load_heap_oop(p); 103 if (!oopDesc::is_null(heap_oop)) { 104 _cc++; 105 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 106 bool failed = false; 107 if (!_g1h->is_in_closed_subset(obj) || _g1h->is_obj_dead_cond(obj, _verify_option)) { 108 MutexLockerEx x(ParGCRareEvent_lock, 109 Mutex::_no_safepoint_check_flag); 110 LogStreamHandle(Error, gc, verify) yy; 111 if (!_failures) { 112 yy.cr(); 113 yy.print_cr("----------"); 114 } 115 if (!_g1h->is_in_closed_subset(obj)) { 116 HeapRegion* from = _g1h->heap_region_containing((HeapWord*)p); 117 yy.print_cr("Field " PTR_FORMAT 118 " of live obj " PTR_FORMAT " in region " 119 "[" PTR_FORMAT ", " PTR_FORMAT ")", 120 p2i(p), p2i(_containing_obj), 121 p2i(from->bottom()), p2i(from->end())); 122 print_object(&yy, _containing_obj); 123 yy.print_cr("points to obj " PTR_FORMAT " not in the heap", 124 p2i(obj)); 125 } else { 126 HeapRegion* from = _g1h->heap_region_containing((HeapWord*)p); 127 HeapRegion* to = _g1h->heap_region_containing((HeapWord*)obj); 128 yy.print_cr("Field " PTR_FORMAT 129 " of live obj " PTR_FORMAT " in region " 130 "[" PTR_FORMAT ", " PTR_FORMAT ")", 131 p2i(p), p2i(_containing_obj), 132 p2i(from->bottom()), p2i(from->end())); 133 print_object(&yy, _containing_obj); 134 yy.print_cr("points to dead obj " PTR_FORMAT " in region " 135 "[" PTR_FORMAT ", " PTR_FORMAT ")", 136 p2i(obj), p2i(to->bottom()), p2i(to->end())); 137 print_object(&yy, obj); 138 } 139 yy.print_cr("----------"); 140 yy.flush(); 141 _failures = true; 142 failed = true; 143 } 144 } 145 } 146 147 void G1VerifyOopClosure::do_oop(oop* p) { do_oop_nv(p); } 148 void G1VerifyOopClosure::do_oop(narrowOop* p) { do_oop_nv(p); } 149 150 // Generate G1 full GC specialized oop_oop_iterate functions. 151 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_G1FULL(ALL_KLASS_OOP_OOP_ITERATE_DEFN)