1 /*
 2  * Copyright (c) 2017, 2025, 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
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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 template <typename T, class OopClosureType>
59 void InlineKlass::oop_iterate_specialized(const address oop_addr, OopClosureType* closure) {
60   OopMapBlock* map = start_of_nonstatic_oop_maps();
61   OopMapBlock* const end_map = map + nonstatic_oop_map_count();
62 
63   for (; map < end_map; map++) {
64     T* p = (T*) (oop_addr + map->offset());
65     T* const end = p + map->count();
66     for (; p < end; ++p) {
67       Devirtualizer::do_oop(closure, p);
68     }
69   }
70 }
71 
72 template <typename T, class OopClosureType>
73 inline void InlineKlass::oop_iterate_specialized_bounded(const address oop_addr, OopClosureType* closure, void* lo, void* hi) {
74   OopMapBlock* map = start_of_nonstatic_oop_maps();
75   OopMapBlock* const end_map = map + nonstatic_oop_map_count();
76 
77   T* const l   = (T*) lo;
78   T* const h   = (T*) hi;
79 
80   for (; map < end_map; map++) {
81     T* p = (T*) (oop_addr + map->offset());
82     T* end = p + map->count();
83     if (p < l) {
84       p = l;
85     }
86     if (end > h) {
87       end = h;
88     }
89     for (; p < end; ++p) {
90       Devirtualizer::do_oop(closure, p);
91     }
92   }
93 }
94 
95 
96 #endif // SHARE_VM_OOPS_INLINEKLASS_INLINE_HPP