1/*
2 * Copyright (c) 2015, 2019, 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.
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23 */
24
25#ifndef SHARE_CLASSFILE_JAVACLASSES_INLINE_HPP
26#define SHARE_CLASSFILE_JAVACLASSES_INLINE_HPP
27
28#include "classfile/javaClasses.hpp"
29#include "oops/access.inline.hpp"
30#include "oops/oop.inline.hpp"
31#include "oops/oopsHierarchy.hpp"
32
33void java_lang_String::set_coder(oop string, jbyte coder) {
34 assert(initialized && (coder_offset > 0), "Must be initialized");
35 string->byte_field_put(coder_offset, coder);
36}
37
38void java_lang_String::set_value_raw(oop string, typeArrayOop buffer) {
39 assert(initialized, "Must be initialized");
40 string->obj_field_put_raw(value_offset, buffer);
41}
42
43void java_lang_String::set_value(oop string, typeArrayOop buffer) {
44 assert(initialized && (value_offset > 0), "Must be initialized");
45 string->obj_field_put(value_offset, (oop)buffer);
46}
47
48bool java_lang_String::hash_is_set(oop java_string) {
49 assert(initialized && (hash_offset > 0) && (hashIsZero_offset > 0), "Must be initialized");
50 return java_string->int_field(hash_offset) != 0 || java_string->bool_field(hashIsZero_offset) != 0;
51}
52
53// Accessors
54bool java_lang_String::value_equals(typeArrayOop str_value1, typeArrayOop str_value2) {
55 return (oopDesc::equals(str_value1, str_value2) ||
56 (str_value1->length() == str_value2->length() &&
57 (!memcmp(str_value1->base(T_BYTE),
58 str_value2->base(T_BYTE),
59 str_value2->length() * sizeof(jbyte)))));
60}
61
62typeArrayOop java_lang_String::value(oop java_string) {
63 assert(initialized && (value_offset > 0), "Must be initialized");
64 assert(is_instance(java_string), "must be java_string");
65 return (typeArrayOop) java_string->obj_field(value_offset);
66}
67
68typeArrayOop java_lang_String::value_no_keepalive(oop java_string) {
69 assert(initialized && (value_offset > 0), "Must be initialized");
70 assert(is_instance(java_string), "must be java_string");
71 return (typeArrayOop) java_string->obj_field_access<AS_NO_KEEPALIVE>(value_offset);
72}
73
74bool java_lang_String::is_latin1(oop java_string) {
75 assert(initialized && (coder_offset > 0), "Must be initialized");
76 assert(is_instance(java_string), "must be java_string");
77 jbyte coder = java_string->byte_field(coder_offset);
78 assert(CompactStrings || coder == CODER_UTF16, "Must be UTF16 without CompactStrings");
79 return coder == CODER_LATIN1;
80}
81
82int java_lang_String::length(oop java_string, typeArrayOop value) {
83 assert(initialized, "Must be initialized");
84 assert(is_instance(java_string), "must be java_string");
85 assert(value_equals(value, java_lang_String::value(java_string)),
86 "value must be equal to java_lang_String::value(java_string)");
87 if (value == NULL) {
88 return 0;
89 }
90 int arr_length = value->length();
91 if (!is_latin1(java_string)) {
92 assert((arr_length & 1) == 0, "should be even for UTF16 string");
93 arr_length >>= 1; // convert number of bytes to number of elements
94 }
95 return arr_length;
96}
97
98int java_lang_String::length(oop java_string) {
99 assert(initialized, "Must be initialized");
100 assert(is_instance(java_string), "must be java_string");
101 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
102 return length(java_string, value);
103}
104
105bool java_lang_String::is_instance_inlined(oop obj) {
106 return obj != NULL && obj->klass() == SystemDictionary::String_klass();
107}
108
109// Accessors
110oop java_lang_ref_Reference::referent(oop ref) {
111 return ref->obj_field(referent_offset);
112}
113
114void java_lang_ref_Reference::set_referent(oop ref, oop value) {
115 ref->obj_field_put(referent_offset, value);
116}
117
118void java_lang_ref_Reference::set_referent_raw(oop ref, oop value) {
119 ref->obj_field_put_raw(referent_offset, value);
120}
121
122HeapWord* java_lang_ref_Reference::referent_addr_raw(oop ref) {
123 return ref->obj_field_addr_raw<HeapWord>(referent_offset);
124}
125
126oop java_lang_ref_Reference::next(oop ref) {
127 return ref->obj_field(next_offset);
128}
129
130void java_lang_ref_Reference::set_next(oop ref, oop value) {
131 ref->obj_field_put(next_offset, value);
132}
133
134void java_lang_ref_Reference::set_next_raw(oop ref, oop value) {
135 ref->obj_field_put_raw(next_offset, value);
136}
137
138HeapWord* java_lang_ref_Reference::next_addr_raw(oop ref) {
139 return ref->obj_field_addr_raw<HeapWord>(next_offset);
140}
141
142oop java_lang_ref_Reference::discovered(oop ref) {
143 return ref->obj_field(discovered_offset);
144}
145
146void java_lang_ref_Reference::set_discovered(oop ref, oop value) {
147 ref->obj_field_put(discovered_offset, value);
148}
149
150void java_lang_ref_Reference::set_discovered_raw(oop ref, oop value) {
151 ref->obj_field_put_raw(discovered_offset, value);
152}
153
154HeapWord* java_lang_ref_Reference::discovered_addr_raw(oop ref) {
155 return ref->obj_field_addr_raw<HeapWord>(discovered_offset);
156}
157
158bool java_lang_ref_Reference::is_final(oop ref) {
159 return InstanceKlass::cast(ref->klass())->reference_type() == REF_FINAL;
160}
161
162bool java_lang_ref_Reference::is_phantom(oop ref) {
163 return InstanceKlass::cast(ref->klass())->reference_type() == REF_PHANTOM;
164}
165
166inline void java_lang_invoke_CallSite::set_target_volatile(oop site, oop target) {
167 site->obj_field_put_volatile(_target_offset, target);
168}
169
170inline oop java_lang_invoke_CallSite::target(oop site) {
171 return site->obj_field(_target_offset);
172}
173
174inline void java_lang_invoke_CallSite::set_target(oop site, oop target) {
175 site->obj_field_put(_target_offset, target);
176}
177
178inline bool java_lang_invoke_CallSite::is_instance(oop obj) {
179 return obj != NULL && is_subclass(obj->klass());
180}
181
182inline bool java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(oop obj) {
183 return obj != NULL && is_subclass(obj->klass());
184}
185
186inline bool java_lang_invoke_MemberName::is_instance(oop obj) {
187 return obj != NULL && obj->klass() == SystemDictionary::MemberName_klass();
188}
189
190inline bool java_lang_invoke_ResolvedMethodName::is_instance(oop obj) {
191 return obj != NULL && obj->klass() == SystemDictionary::ResolvedMethodName_klass();
192}
193
194inline bool java_lang_invoke_MethodType::is_instance(oop obj) {
195 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass();
196}
197
198inline bool java_lang_invoke_MethodHandle::is_instance(oop obj) {
199 return obj != NULL && is_subclass(obj->klass());
200}
201
202inline bool java_lang_Class::is_instance(oop obj) {
203 return obj != NULL && obj->klass() == SystemDictionary::Class_klass();
204}
205
206inline bool java_lang_Class::is_primitive(oop java_class) {
207 // should assert:
208 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
209 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
210
211#ifdef ASSERT
212 if (is_primitive) {
213 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
214 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
215 "Should be either the T_VOID primitive or a java primitive");
216 }
217#endif
218
219 return is_primitive;
220}
221
222inline int java_lang_Class::oop_size_raw(oop java_class) {
223 assert(_oop_size_offset != 0, "must be set");
224 int size = java_class->int_field_raw(_oop_size_offset);
225 assert(size > 0, "Oop size must be greater than zero, not %d", size);
226 return size;
227}
228
229inline bool java_lang_invoke_DirectMethodHandle::is_instance(oop obj) {
230 return obj != NULL && is_subclass(obj->klass());
231}
232
233inline bool java_lang_Module::is_instance(oop obj) {
234 return obj != NULL && obj->klass() == SystemDictionary::Module_klass();
235}
236
237inline int Backtrace::merge_bci_and_version(int bci, int version) {
238 // only store u2 for version, checking for overflow.
239 if (version > USHRT_MAX || version < 0) version = USHRT_MAX;
240 assert((jushort)bci == bci, "bci should be short");
241 return build_int_from_shorts(version, bci);
242}
243
244inline int Backtrace::merge_mid_and_cpref(int mid, int cpref) {
245 // only store u2 for mid and cpref, checking for overflow.
246 assert((jushort)mid == mid, "mid should be short");
247 assert((jushort)cpref == cpref, "cpref should be short");
248 return build_int_from_shorts(cpref, mid);
249}
250
251inline int Backtrace::bci_at(unsigned int merged) {
252 return extract_high_short_from_int(merged);
253}
254
255inline int Backtrace::version_at(unsigned int merged) {
256 return extract_low_short_from_int(merged);
257}
258
259inline int Backtrace::mid_at(unsigned int merged) {
260 return extract_high_short_from_int(merged);
261}
262
263inline int Backtrace::cpref_at(unsigned int merged) {
264 return extract_low_short_from_int(merged);
265}
266
267inline int Backtrace::get_line_number(const methodHandle& method, int bci) {
268 int line_number = 0;
269 if (method->is_native()) {
270 // Negative value different from -1 below, enabling Java code in
271 // class java.lang.StackTraceElement to distinguish "native" from
272 // "no LineNumberTable". JDK tests for -2.
273 line_number = -2;
274 } else {
275 // Returns -1 if no LineNumberTable, and otherwise actual line number
276 line_number = method->line_number_from_bci(bci);
277 if (line_number == -1 && ShowHiddenFrames) {
278 line_number = bci + 1000000;
279 }
280 }
281 return line_number;
282}
283
284inline Symbol* Backtrace::get_source_file_name(InstanceKlass* holder, int version) {
285 // RedefineClasses() currently permits redefine operations to
286 // happen in parallel using a "last one wins" philosophy. That
287 // spec laxness allows the constant pool entry associated with
288 // the source_file_name_index for any older constant pool version
289 // to be unstable so we shouldn't try to use it.
290 if (holder->constants()->version() != version) {
291 return NULL;
292 } else {
293 return holder->source_file_name();
294 }
295}
296
297#endif // SHARE_CLASSFILE_JAVACLASSES_INLINE_HPP
298