1 /*
2 * Copyright (c) 2015, 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_CLASSFILE_JAVACLASSES_INLINE_HPP
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_INLINE_HPP
27
28 #include "classfile/javaClasses.hpp"
29 #include "oops/oop.inline.hpp"
30 #include "oops/oopsHierarchy.hpp"
31
32 inline void java_lang_invoke_CallSite::set_target_volatile(oop site, oop target) {
33 site->obj_field_put_volatile(_target_offset, target);
34 }
35
36 inline oop java_lang_invoke_CallSite::target(oop site) {
37 return site->obj_field(_target_offset);
38 }
39
40 inline void java_lang_invoke_CallSite::set_target(oop site, oop target) {
41 site->obj_field_put(_target_offset, target);
42 }
43
44 inline bool java_lang_String::is_instance_inlined(oop obj) {
45 return obj != NULL && obj->klass() == SystemDictionary::String_klass();
46 }
47
48 inline bool java_lang_invoke_CallSite::is_instance(oop obj) {
49 return obj != NULL && is_subclass(obj->klass());
50 }
51
52 inline bool java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(oop obj) {
53 return obj != NULL && is_subclass(obj->klass());
54 }
55
56 inline bool java_lang_invoke_MemberName::is_instance(oop obj) {
57 return obj != NULL && is_subclass(obj->klass());
58 }
59
60 inline bool java_lang_invoke_MethodType::is_instance(oop obj) {
61 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass();
62 }
63
64 inline bool java_lang_invoke_MethodHandle::is_instance(oop obj) {
65 return obj != NULL && is_subclass(obj->klass());
66 }
67
68 inline bool java_lang_Class::is_instance(oop obj) {
69 return obj != NULL && obj->klass() == SystemDictionary::Class_klass();
70 }
71
72 inline bool java_lang_invoke_DirectMethodHandle::is_instance(oop obj) {
73 return obj != NULL && is_subclass(obj->klass());
74 }
75
76 inline int Backtrace::merge_bci_and_version(int bci, int version) {
77 // only store u2 for version, checking for overflow.
78 if (version > USHRT_MAX || version < 0) version = USHRT_MAX;
79 assert((jushort)bci == bci, "bci should be short");
80 return build_int_from_shorts(version, bci);
81 }
82
83 inline int Backtrace::merge_mid_and_cpref(int mid, int cpref) {
84 // only store u2 for mid and cpref, checking for overflow.
85 assert((jushort)mid == mid, "mid should be short");
86 assert((jushort)cpref == cpref, "cpref should be short");
87 return build_int_from_shorts(cpref, mid);
88 }
89
90 inline int Backtrace::bci_at(unsigned int merged) {
91 return extract_high_short_from_int(merged);
92 }
93
94 inline int Backtrace::version_at(unsigned int merged) {
95 return extract_low_short_from_int(merged);
96 }
97
98 inline int Backtrace::mid_at(unsigned int merged) {
99 return extract_high_short_from_int(merged);
100 }
101
102 inline int Backtrace::cpref_at(unsigned int merged) {
103 return extract_low_short_from_int(merged);
104 }
105
106 inline int Backtrace::get_line_number(const methodHandle& method, int bci) {
107 int line_number = 0;
108 if (method->is_native()) {
109 // Negative value different from -1 below, enabling Java code in
110 // class java.lang.StackTraceElement to distinguish "native" from
111 // "no LineNumberTable". JDK tests for -2.
112 line_number = -2;
113 } else {
114 // Returns -1 if no LineNumberTable, and otherwise actual line number
115 line_number = method->line_number_from_bci(bci);
116 if (line_number == -1 && ShowHiddenFrames) {
117 line_number = bci + 1000000;
118 }
119 }
120 return line_number;
121 }
122
123 /*
124 * Returns the source file name of a given InstanceKlass and version
125 */
126 inline Symbol* Backtrace::get_source_file_name(InstanceKlass* holder, int version) {
127 // Find the specific ik version that contains this source_file_name_index
128 // via the previous versions list, but use the current version's
129 // constant pool to look it up. The previous version's index has been
130 // merged for the current constant pool.
131 InstanceKlass* ik = holder->get_klass_version(version);
132 // This version has been cleaned up.
133 if (ik == NULL) return NULL;
134 int source_file_name_index = ik->source_file_name_index();
135 return (source_file_name_index == 0) ?
136 (Symbol*)NULL : holder->constants()->symbol_at(source_file_name_index);
137 }
138
139 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_INLINE_HPP