1 /*
2 * Copyright (c) 2023, 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 "oops/method.hpp"
27 #include "oops/resolvedMethodEntry.hpp"
28
29 bool ResolvedMethodEntry::check_no_old_or_obsolete_entry() {
30 // return false if m refers to a non-deleted old or obsolete method
31 if (_method != nullptr) {
32 assert(_method->is_valid() && _method->is_method(), "m is a valid method");
33 return !_method->is_old() && !_method->is_obsolete(); // old is always set for old and obsolete
34 } else {
35 return true;
36 }
37 }
38
39 void ResolvedMethodEntry::reset_entry() {
40 if (has_resolved_references_index()) {
41 u2 saved_resolved_references_index = _entry_specific._resolved_references_index;
42 u2 saved_cpool_index = _cpool_index;
43 memset(this, 0, sizeof(*this));
44 set_resolved_references_index(saved_resolved_references_index);
45 _cpool_index = saved_cpool_index;
46 } else {
47 u2 saved_cpool_index = _cpool_index;
48 memset(this, 0, sizeof(*this));
49 _cpool_index = saved_cpool_index;
50 }
51 }
52
53 void ResolvedMethodEntry::remove_unshareable_info() {
54 reset_entry();
55 }
56
57 void ResolvedMethodEntry::print_on(outputStream* st) const {
58 st->print_cr("Method Entry:");
59
60 if (method() != nullptr) {
61 st->print_cr(" - Method: " INTPTR_FORMAT " %s", p2i(method()), method()->external_name());
62 } else {
63 st->print_cr("- Method: null");
64 }
65 // Some fields are mutually exclusive and are only used by certain invoke codes
66 if (bytecode1() == Bytecodes::_invokeinterface && interface_klass() != nullptr) {
67 st->print_cr(" - Klass: " INTPTR_FORMAT " %s", p2i(interface_klass()), interface_klass()->external_name());
68 } else {
69 st->print_cr("- Klass: null");
70 }
71 if (bytecode1() == Bytecodes::_invokehandle) {
72 st->print_cr(" - Resolved References Index: %d", resolved_references_index());
73 } else {
74 st->print_cr(" - Resolved References Index: none");
75 }
76 if (bytecode2() == Bytecodes::_invokevirtual) {
77 #ifdef ASSERT
78 if (_has_table_index) {
79 st->print_cr(" - Table Index: %d", table_index());
80 }
81 #else
82 st->print_cr(" - Table Index: %d", table_index());
83 #endif
84 } else {
85 st->print_cr(" - Table Index: none");
86 }
87 st->print_cr(" - CP Index: %d", constant_pool_index());
88 st->print_cr(" - TOS: %s", type2name(as_BasicType((TosState)tos_state())));
89 st->print_cr(" - Number of Parameters: %d", number_of_parameters());
90 st->print_cr(" - Is Virtual Final: %d", is_vfinal());
91 st->print_cr(" - Is Final: %d", is_final());
92 st->print_cr(" - Is Forced Virtual: %d", is_forced_virtual());
93 st->print_cr(" - Has Appendix: %d", has_appendix());
94 st->print_cr(" - Has Local Signature: %d", has_local_signature());
95 st->print_cr(" - Bytecode 1: %s", Bytecodes::name((Bytecodes::Code)bytecode1()));
96 st->print_cr(" - Bytecode 2: %s", Bytecodes::name((Bytecodes::Code)bytecode2()));
97 }