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 #ifndef SHARE_VM_OOPS_INLINEKLASS_INLINE_HPP
 25 #define SHARE_VM_OOPS_INLINEKLASS_INLINE_HPP
 26 
 27 #include "memory/iterator.hpp"
 28 #include "oops/flatArrayKlass.hpp"
 29 #include "oops/inlineKlass.hpp"
 30 #include "oops/instanceKlass.inline.hpp"
 31 #include "oops/oop.inline.hpp"
 32 #include "utilities/devirtualizer.inline.hpp"
 33 #include "utilities/macros.hpp"
 34 
 35 inline InlineKlassFixedBlock* InlineKlass::inlineklass_static_block() const {
 36 
 37   InstanceKlass* volatile* adr_impl = adr_implementor();
 38   if (adr_impl != nullptr) {
 39     return (InlineKlassFixedBlock*)(adr_impl + 1);
 40   }
 41 
 42   return (InlineKlassFixedBlock*)end_of_nonstatic_oop_maps();
 43 }
 44 
 45 inline address InlineKlass::adr_return_regs() const {
 46   InlineKlassFixedBlock* vkst = inlineklass_static_block();
 47   return ((address)_adr_inlineklass_fixed_block) + in_bytes(byte_offset_of(InlineKlassFixedBlock, _return_regs));
 48 }
 49 
 50 inline Array<VMRegPair>* InlineKlass::return_regs() const {
 51   return *((Array<VMRegPair>**)adr_return_regs());
 52 }
 53 
 54 inline address InlineKlass::data_for_oop(oop o) const {
 55   return ((address) (void*) o) + first_field_offset();
 56 }
 57 
 58 inline void InlineKlass::inline_copy_payload_to_new_oop(void* src, oop dst, LayoutKind lk) {
 59   HeapAccess<IS_DEST_UNINITIALIZED>::value_copy(src, data_for_oop(dst), this, lk);
 60 }
 61 
 62 inline void InlineKlass::inline_copy_oop_to_new_oop(oop src, oop dst, LayoutKind lk) {
 63   HeapAccess<IS_DEST_UNINITIALIZED>::value_copy(data_for_oop(src), data_for_oop(dst), this, lk);
 64 }
 65 
 66 inline void InlineKlass::inline_copy_oop_to_new_payload(oop src, void* dst, LayoutKind lk) {
 67   HeapAccess<IS_DEST_UNINITIALIZED>::value_copy(data_for_oop(src), dst, this, lk);
 68 }
 69 
 70 inline void InlineKlass::inline_copy_oop_to_payload(oop src, void* dst, LayoutKind lk) {
 71   HeapAccess<>::value_copy(data_for_oop(src), dst, this, lk);
 72 }
 73 
 74 
 75 template <typename T, class OopClosureType>
 76 void InlineKlass::oop_iterate_specialized(const address oop_addr, OopClosureType* closure) {
 77   OopMapBlock* map = start_of_nonstatic_oop_maps();
 78   OopMapBlock* const end_map = map + nonstatic_oop_map_count();
 79 
 80   for (; map < end_map; map++) {
 81     T* p = (T*) (oop_addr + map->offset());
 82     T* const end = p + map->count();
 83     for (; p < end; ++p) {
 84       Devirtualizer::do_oop(closure, p);
 85     }
 86   }
 87 }
 88 
 89 template <typename T, class OopClosureType>
 90 inline void InlineKlass::oop_iterate_specialized_bounded(const address oop_addr, OopClosureType* closure, void* lo, void* hi) {
 91   OopMapBlock* map = start_of_nonstatic_oop_maps();
 92   OopMapBlock* const end_map = map + nonstatic_oop_map_count();
 93 
 94   T* const l   = (T*) lo;
 95   T* const h   = (T*) hi;
 96 
 97   for (; map < end_map; map++) {
 98     T* p = (T*) (oop_addr + map->offset());
 99     T* end = p + map->count();
100     if (p < l) {
101       p = l;
102     }
103     if (end > h) {
104       end = h;
105     }
106     for (; p < end; ++p) {
107       Devirtualizer::do_oop(closure, p);
108     }
109   }
110 }
111 
112 
113 #endif // SHARE_VM_OOPS_INLINEKLASS_INLINE_HPP