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src/share/vm/classfile/classFileParser.hpp@fc9d8850ab8b
src/share/vm/classfile/classFileParser.hpp
Fri, 23 Mar 2012 11:16:05 -0400
- author
- coleenp
- date
- Fri, 23 Mar 2012 11:16:05 -0400
- changeset 3682
- fc9d8850ab8b
- parent 3373
- cd5d8cafcc84
- child 3686
- 749b1464aa81
- permissions
- -rw-r--r--
7150058: Allocate symbols from null boot loader to an arena for NMT
Summary: Move symbol allocation to an arena so NMT doesn't have to track them at startup.
Reviewed-by: never, kamg, zgu
1 /*
2 * Copyright (c) 1997, 2012, 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 */
25 #ifndef SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
26 #define SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
28 #include "classfile/classFileStream.hpp"
29 #include "memory/resourceArea.hpp"
30 #include "oops/oop.inline.hpp"
31 #include "oops/typeArrayOop.hpp"
32 #include "runtime/handles.inline.hpp"
33 #include "utilities/accessFlags.hpp"
35 class TempNewSymbol;
36 class FieldAllocationCount;
39 // Parser for for .class files
40 //
41 // The bytes describing the class file structure is read from a Stream object
43 class ClassFileParser VALUE_OBJ_CLASS_SPEC {
44 private:
45 bool _need_verify;
46 bool _relax_verify;
47 u2 _major_version;
48 u2 _minor_version;
49 Symbol* _class_name;
50 KlassHandle _host_klass;
51 GrowableArray<Handle>* _cp_patches; // overrides for CP entries
53 bool _has_finalizer;
54 bool _has_empty_finalizer;
55 bool _has_vanilla_constructor;
57 int _max_bootstrap_specifier_index;
59 enum { fixed_buffer_size = 128 };
60 u_char linenumbertable_buffer[fixed_buffer_size];
62 ClassFileStream* _stream; // Actual input stream
64 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names
66 // Accessors
67 ClassFileStream* stream() { return _stream; }
68 void set_stream(ClassFileStream* st) { _stream = st; }
70 // Constant pool parsing
71 void parse_constant_pool_entries(Handle class_loader,
72 constantPoolHandle cp, int length, TRAPS);
74 constantPoolHandle parse_constant_pool(Handle class_loader, TRAPS);
76 // Interface parsing
77 objArrayHandle parse_interfaces(constantPoolHandle cp,
78 int length,
79 Handle class_loader,
80 Handle protection_domain,
81 Symbol* class_name,
82 TRAPS);
84 // Field parsing
85 void parse_field_attributes(constantPoolHandle cp, u2 attributes_count,
86 bool is_static, u2 signature_index,
87 u2* constantvalue_index_addr,
88 bool* is_synthetic_addr,
89 u2* generic_signature_index_addr,
90 typeArrayHandle* field_annotations, TRAPS);
91 typeArrayHandle parse_fields(Symbol* class_name,
92 constantPoolHandle cp, bool is_interface,
93 FieldAllocationCount *fac,
94 objArrayHandle* fields_annotations,
95 u2* java_fields_count_ptr, TRAPS);
97 // Method parsing
98 methodHandle parse_method(constantPoolHandle cp, bool is_interface,
99 AccessFlags* promoted_flags,
100 typeArrayHandle* method_annotations,
101 typeArrayHandle* method_parameter_annotations,
102 typeArrayHandle* method_default_annotations,
103 TRAPS);
104 objArrayHandle parse_methods (constantPoolHandle cp, bool is_interface,
105 AccessFlags* promoted_flags,
106 bool* has_final_method,
107 objArrayOop* methods_annotations_oop,
108 objArrayOop* methods_parameter_annotations_oop,
109 objArrayOop* methods_default_annotations_oop,
110 TRAPS);
111 typeArrayHandle sort_methods (objArrayHandle methods,
112 objArrayHandle methods_annotations,
113 objArrayHandle methods_parameter_annotations,
114 objArrayHandle methods_default_annotations,
115 TRAPS);
116 typeArrayHandle parse_exception_table(u4 code_length, u4 exception_table_length,
117 constantPoolHandle cp, TRAPS);
118 void parse_linenumber_table(
119 u4 code_attribute_length, u4 code_length,
120 CompressedLineNumberWriteStream** write_stream, TRAPS);
121 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length,
122 constantPoolHandle cp, u2* localvariable_table_length,
123 bool isLVTT, TRAPS);
124 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length,
125 constantPoolHandle cp, TRAPS);
126 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
127 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS);
128 typeArrayOop parse_stackmap_table(u4 code_attribute_length, TRAPS);
130 // Classfile attribute parsing
131 void parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
132 void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
133 instanceKlassHandle k, int length, TRAPS);
134 u2 parse_classfile_inner_classes_attribute(constantPoolHandle cp,
135 instanceKlassHandle k, TRAPS);
136 void parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
137 void parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
138 void parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
139 void parse_classfile_bootstrap_methods_attribute(constantPoolHandle cp, instanceKlassHandle k, u4 attribute_length, TRAPS);
141 // Annotations handling
142 typeArrayHandle assemble_annotations(u1* runtime_visible_annotations,
143 int runtime_visible_annotations_length,
144 u1* runtime_invisible_annotations,
145 int runtime_invisible_annotations_length, TRAPS);
147 // Final setup
148 unsigned int compute_oop_map_count(instanceKlassHandle super,
149 unsigned int nonstatic_oop_count,
150 int first_nonstatic_oop_offset);
151 void fill_oop_maps(instanceKlassHandle k,
152 unsigned int nonstatic_oop_map_count,
153 int* nonstatic_oop_offsets,
154 unsigned int* nonstatic_oop_counts);
155 void set_precomputed_flags(instanceKlassHandle k);
156 objArrayHandle compute_transitive_interfaces(instanceKlassHandle super,
157 objArrayHandle local_ifs, TRAPS);
159 // Format checker methods
160 void classfile_parse_error(const char* msg, TRAPS);
161 void classfile_parse_error(const char* msg, int index, TRAPS);
162 void classfile_parse_error(const char* msg, const char *name, TRAPS);
163 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS);
164 inline void guarantee_property(bool b, const char* msg, TRAPS) {
165 if (!b) { classfile_parse_error(msg, CHECK); }
166 }
168 inline void assert_property(bool b, const char* msg, TRAPS) {
169 #ifdef ASSERT
170 if (!b) { fatal(msg); }
171 #endif
172 }
174 inline void check_property(bool property, const char* msg, int index, TRAPS) {
175 if (_need_verify) {
176 guarantee_property(property, msg, index, CHECK);
177 } else {
178 assert_property(property, msg, CHECK);
179 }
180 }
182 inline void check_property(bool property, const char* msg, TRAPS) {
183 if (_need_verify) {
184 guarantee_property(property, msg, CHECK);
185 } else {
186 assert_property(property, msg, CHECK);
187 }
188 }
190 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) {
191 if (!b) { classfile_parse_error(msg, index, CHECK); }
192 }
193 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) {
194 if (!b) { classfile_parse_error(msg, name, CHECK); }
195 }
196 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) {
197 if (!b) { classfile_parse_error(msg, index, name, CHECK); }
198 }
200 void throwIllegalSignature(
201 const char* type, Symbol* name, Symbol* sig, TRAPS);
203 bool is_supported_version(u2 major, u2 minor);
204 bool has_illegal_visibility(jint flags);
206 void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS);
207 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS);
208 void verify_legal_class_name(Symbol* name, TRAPS);
209 void verify_legal_field_name(Symbol* name, TRAPS);
210 void verify_legal_method_name(Symbol* name, TRAPS);
211 void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS);
212 int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS);
213 void verify_legal_class_modifiers(jint flags, TRAPS);
214 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS);
215 void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS);
216 bool verify_unqualified_name(char* name, unsigned int length, int type);
217 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length);
218 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS);
220 bool is_anonymous() {
221 assert(EnableInvokeDynamic || _host_klass.is_null(), "");
222 return _host_klass.not_null();
223 }
224 bool has_cp_patch_at(int index) {
225 assert(EnableInvokeDynamic, "");
226 assert(index >= 0, "oob");
227 return (_cp_patches != NULL
228 && index < _cp_patches->length()
229 && _cp_patches->adr_at(index)->not_null());
230 }
231 Handle cp_patch_at(int index) {
232 assert(has_cp_patch_at(index), "oob");
233 return _cp_patches->at(index);
234 }
235 Handle clear_cp_patch_at(int index) {
236 Handle patch = cp_patch_at(index);
237 _cp_patches->at_put(index, Handle());
238 assert(!has_cp_patch_at(index), "");
239 return patch;
240 }
241 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS);
243 // Wrapper for constantTag.is_klass_[or_]reference.
244 // In older versions of the VM, klassOops cannot sneak into early phases of
245 // constant pool construction, but in later versions they can.
246 // %%% Let's phase out the old is_klass_reference.
247 bool is_klass_reference(constantPoolHandle cp, int index) {
248 return ((LinkWellKnownClasses || EnableInvokeDynamic)
249 ? cp->tag_at(index).is_klass_or_reference()
250 : cp->tag_at(index).is_klass_reference());
251 }
253 public:
254 // Constructor
255 ClassFileParser(ClassFileStream* st) { set_stream(st); }
257 // Parse .class file and return new klassOop. The klassOop is not hooked up
258 // to the system dictionary or any other structures, so a .class file can
259 // be loaded several times if desired.
260 // The system dictionary hookup is done by the caller.
261 //
262 // "parsed_name" is updated by this method, and is the name found
263 // while parsing the stream.
264 instanceKlassHandle parseClassFile(Symbol* name,
265 Handle class_loader,
266 Handle protection_domain,
267 TempNewSymbol& parsed_name,
268 bool verify,
269 TRAPS) {
270 KlassHandle no_host_klass;
271 return parseClassFile(name, class_loader, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD);
272 }
273 instanceKlassHandle parseClassFile(Symbol* name,
274 Handle class_loader,
275 Handle protection_domain,
276 KlassHandle host_klass,
277 GrowableArray<Handle>* cp_patches,
278 TempNewSymbol& parsed_name,
279 bool verify,
280 TRAPS);
282 // Verifier checks
283 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS);
284 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS);
285 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS);
286 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS);
287 };
289 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
