1 /* 2 * Copyright (c) 2000, 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 #ifndef SHARE_VM_GC_SERIAL_MARKSWEEP_INLINE_HPP 26 #define SHARE_VM_GC_SERIAL_MARKSWEEP_INLINE_HPP 27 28 #include "gc/serial/markSweep.hpp" 29 #include "memory/universe.hpp" 30 #include "oops/markOop.inline.hpp" 31 #include "oops/oop.inline.hpp" 32 #if INCLUDE_ALL_GCS 33 #include "gc/g1/g1Allocator.inline.hpp" 34 #endif // INCLUDE_ALL_GCS 35 36 inline bool MarkSweep::is_archive_object(oop object) { 37 #if INCLUDE_ALL_GCS 38 return G1ArchiveAllocator::is_archive_object(object); 39 #else 40 return false; 41 #endif 42 } 43 44 inline int MarkSweep::adjust_pointers(oop obj) { 45 return obj->ms_adjust_pointers(); 46 } 47 48 template <class T> inline void MarkSweep::adjust_pointer(T* p) { 49 T heap_oop = oopDesc::load_heap_oop(p); 50 if (!oopDesc::is_null(heap_oop)) { 51 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 52 assert(Universe::heap()->is_in(obj), "should be in heap"); 53 54 oop new_obj = oop(obj->mark()->decode_pointer()); 55 assert(is_archive_object(obj) || // no forwarding of archive objects 56 new_obj != NULL || // is forwarding ptr? 57 obj->mark() == markOopDesc::prototype() || // not gc marked? 58 (UseBiasedLocking && obj->mark()->has_bias_pattern()), 59 // not gc marked? 60 "should be forwarded"); 61 if (new_obj != NULL) { 62 if (!is_archive_object(obj)) { 63 assert(Universe::heap()->is_in_reserved(new_obj), 64 "should be in object space"); 65 oopDesc::encode_store_heap_oop_not_null(p, new_obj); 66 } 67 } 68 } 69 } 70 71 #endif // SHARE_VM_GC_SERIAL_MARKSWEEP_INLINE_HPP