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src/share/vm/classfile/classFileParser.hpp@90273fc0a981
src/share/vm/classfile/classFileParser.hpp
Thu, 29 Nov 2012 16:50:29 -0500
- author
- coleenp
- date
- Thu, 29 Nov 2012 16:50:29 -0500
- changeset 4304
- 90273fc0a981
- parent 4245
- 4735d2c84362
- child 4393
- 35431a769282
- permissions
- -rw-r--r--
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
Summary: Add ClassLoaderData object for each anonymous class with metaspaces to allocate in.
Reviewed-by: twisti, jrose, stefank
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"
34 #include "classfile/symbolTable.hpp"
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 // precomputed flags
54 bool _has_finalizer;
55 bool _has_empty_finalizer;
56 bool _has_vanilla_constructor;
57 int _max_bootstrap_specifier_index; // detects BSS values
59 // class attributes parsed before the instance klass is created:
60 bool _synthetic_flag;
61 Symbol* _sourcefile;
62 Symbol* _generic_signature;
63 char* _sde_buffer;
64 int _sde_length;
65 Array<u2>* _inner_classes;
66 AnnotationArray* _annotations;
68 void set_class_synthetic_flag(bool x) { _synthetic_flag = x; }
69 void set_class_sourcefile(Symbol* x) { _sourcefile = x; }
70 void set_class_generic_signature(Symbol* x) { _generic_signature = x; }
71 void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; }
72 void set_class_inner_classes(Array<u2>* x) { _inner_classes = x; }
73 void set_class_annotations(AnnotationArray* x) { _annotations = x; }
74 void init_parsed_class_attributes() {
75 _synthetic_flag = false;
76 _sourcefile = NULL;
77 _generic_signature = NULL;
78 _sde_buffer = NULL;
79 _sde_length = 0;
80 // initialize the other flags too:
81 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false;
82 _max_bootstrap_specifier_index = -1;
83 }
84 void apply_parsed_class_attributes(instanceKlassHandle k); // update k
86 class AnnotationCollector {
87 public:
88 enum Location { _in_field, _in_method, _in_class };
89 enum ID {
90 _unknown = 0,
91 _method_ForceInline,
92 _method_DontInline,
93 _method_LambdaForm_Compiled,
94 _method_LambdaForm_Hidden,
95 _annotation_LIMIT
96 };
97 const Location _location;
98 int _annotations_present;
99 AnnotationCollector(Location location)
100 : _location(location), _annotations_present(0)
101 {
102 assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, "");
103 }
104 // If this annotation name has an ID, report it (or _none).
105 ID annotation_index(Symbol* name);
106 // Set the annotation name:
107 void set_annotation(ID id) {
108 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
109 _annotations_present |= nth_bit((int)id);
110 }
111 // Report if the annotation is present.
112 bool has_any_annotations() { return _annotations_present != 0; }
113 bool has_annotation(ID id) { return (nth_bit((int)id) & _annotations_present) != 0; }
114 };
115 class FieldAnnotationCollector: public AnnotationCollector {
116 public:
117 FieldAnnotationCollector() : AnnotationCollector(_in_field) { }
118 void apply_to(FieldInfo* f);
119 };
120 class MethodAnnotationCollector: public AnnotationCollector {
121 public:
122 MethodAnnotationCollector() : AnnotationCollector(_in_method) { }
123 void apply_to(methodHandle m);
124 };
125 class ClassAnnotationCollector: public AnnotationCollector {
126 public:
127 ClassAnnotationCollector() : AnnotationCollector(_in_class) { }
128 void apply_to(instanceKlassHandle k);
129 };
131 enum { fixed_buffer_size = 128 };
132 u_char linenumbertable_buffer[fixed_buffer_size];
134 ClassFileStream* _stream; // Actual input stream
136 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names
138 // Accessors
139 ClassFileStream* stream() { return _stream; }
140 void set_stream(ClassFileStream* st) { _stream = st; }
142 // Constant pool parsing
143 void parse_constant_pool_entries(ClassLoaderData* loader_data,
144 constantPoolHandle cp, int length, TRAPS);
146 constantPoolHandle parse_constant_pool(ClassLoaderData* loader_data, TRAPS);
148 // Interface parsing
149 Array<Klass*>* parse_interfaces(constantPoolHandle cp,
150 int length,
151 ClassLoaderData* loader_data,
152 Handle protection_domain,
153 Symbol* class_name,
154 bool* has_default_methods,
155 TRAPS);
156 void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS);
158 // Field parsing
159 void parse_field_attributes(ClassLoaderData* loader_data,
160 constantPoolHandle cp, u2 attributes_count,
161 bool is_static, u2 signature_index,
162 u2* constantvalue_index_addr,
163 bool* is_synthetic_addr,
164 u2* generic_signature_index_addr,
165 AnnotationArray** field_annotations,
166 FieldAnnotationCollector* parsed_annotations,
167 TRAPS);
168 Array<u2>* parse_fields(ClassLoaderData* loader_data,
169 Symbol* class_name,
170 constantPoolHandle cp, bool is_interface,
171 FieldAllocationCount *fac,
172 Array<AnnotationArray*>** fields_annotations,
173 u2* java_fields_count_ptr, TRAPS);
175 // Method parsing
176 methodHandle parse_method(ClassLoaderData* loader_data,
177 constantPoolHandle cp,
178 bool is_interface,
179 AccessFlags* promoted_flags,
180 AnnotationArray** method_annotations,
181 AnnotationArray** method_parameter_annotations,
182 AnnotationArray** method_default_annotations,
183 TRAPS);
184 Array<Method*>* parse_methods(ClassLoaderData* loader_data,
185 constantPoolHandle cp,
186 bool is_interface,
187 AccessFlags* promoted_flags,
188 bool* has_final_method,
189 Array<AnnotationArray*>** methods_annotations,
190 Array<AnnotationArray*>** methods_parameter_annotations,
191 Array<AnnotationArray*>** methods_default_annotations,
192 bool* has_default_method,
193 TRAPS);
194 Array<int>* sort_methods(ClassLoaderData* loader_data,
195 Array<Method*>* methods,
196 Array<AnnotationArray*>* methods_annotations,
197 Array<AnnotationArray*>* methods_parameter_annotations,
198 Array<AnnotationArray*>* methods_default_annotations,
199 TRAPS);
200 u2* parse_exception_table(ClassLoaderData* loader_data,
201 u4 code_length, u4 exception_table_length,
202 constantPoolHandle cp, TRAPS);
203 void parse_linenumber_table(
204 u4 code_attribute_length, u4 code_length,
205 CompressedLineNumberWriteStream** write_stream, TRAPS);
206 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length,
207 constantPoolHandle cp, u2* localvariable_table_length,
208 bool isLVTT, TRAPS);
209 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length,
210 constantPoolHandle cp, TRAPS);
211 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
212 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS);
213 Array<u1>* parse_stackmap_table(ClassLoaderData* loader_data, u4 code_attribute_length, TRAPS);
215 // Classfile attribute parsing
216 void parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS);
217 void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
218 int length, TRAPS);
219 u2 parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data,
220 u1* inner_classes_attribute_start,
221 bool parsed_enclosingmethod_attribute,
222 u2 enclosing_method_class_index,
223 u2 enclosing_method_method_index,
224 constantPoolHandle cp,
225 TRAPS);
226 void parse_classfile_attributes(ClassLoaderData* loader_data,
227 constantPoolHandle cp,
228 ClassAnnotationCollector* parsed_annotations,
229 TRAPS);
230 void parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS);
231 void parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS);
232 void parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, constantPoolHandle cp, u4 attribute_length, TRAPS);
234 // Annotations handling
235 AnnotationArray* assemble_annotations(ClassLoaderData* loader_data,
236 u1* runtime_visible_annotations,
237 int runtime_visible_annotations_length,
238 u1* runtime_invisible_annotations,
239 int runtime_invisible_annotations_length, TRAPS);
240 int skip_annotation(u1* buffer, int limit, int index);
241 int skip_annotation_value(u1* buffer, int limit, int index);
242 void parse_annotations(u1* buffer, int limit, constantPoolHandle cp,
243 /* Results (currently, only one result is supported): */
244 AnnotationCollector* result,
245 TRAPS);
247 // Final setup
248 unsigned int compute_oop_map_count(instanceKlassHandle super,
249 unsigned int nonstatic_oop_count,
250 int first_nonstatic_oop_offset);
251 void fill_oop_maps(instanceKlassHandle k,
252 unsigned int nonstatic_oop_map_count,
253 int* nonstatic_oop_offsets,
254 unsigned int* nonstatic_oop_counts);
255 void set_precomputed_flags(instanceKlassHandle k);
256 Array<Klass*>* compute_transitive_interfaces(ClassLoaderData* loader_data,
257 instanceKlassHandle super,
258 Array<Klass*>* local_ifs, TRAPS);
260 // Format checker methods
261 void classfile_parse_error(const char* msg, TRAPS);
262 void classfile_parse_error(const char* msg, int index, TRAPS);
263 void classfile_parse_error(const char* msg, const char *name, TRAPS);
264 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS);
265 inline void guarantee_property(bool b, const char* msg, TRAPS) {
266 if (!b) { classfile_parse_error(msg, CHECK); }
267 }
269 inline void assert_property(bool b, const char* msg, TRAPS) {
270 #ifdef ASSERT
271 if (!b) { fatal(msg); }
272 #endif
273 }
275 inline void check_property(bool property, const char* msg, int index, TRAPS) {
276 if (_need_verify) {
277 guarantee_property(property, msg, index, CHECK);
278 } else {
279 assert_property(property, msg, CHECK);
280 }
281 }
283 inline void check_property(bool property, const char* msg, TRAPS) {
284 if (_need_verify) {
285 guarantee_property(property, msg, CHECK);
286 } else {
287 assert_property(property, msg, CHECK);
288 }
289 }
291 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) {
292 if (!b) { classfile_parse_error(msg, index, CHECK); }
293 }
294 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) {
295 if (!b) { classfile_parse_error(msg, name, CHECK); }
296 }
297 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) {
298 if (!b) { classfile_parse_error(msg, index, name, CHECK); }
299 }
301 void throwIllegalSignature(
302 const char* type, Symbol* name, Symbol* sig, TRAPS);
304 bool is_supported_version(u2 major, u2 minor);
305 bool has_illegal_visibility(jint flags);
307 void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS);
308 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS);
309 void verify_legal_class_name(Symbol* name, TRAPS);
310 void verify_legal_field_name(Symbol* name, TRAPS);
311 void verify_legal_method_name(Symbol* name, TRAPS);
312 void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS);
313 int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS);
314 void verify_legal_class_modifiers(jint flags, TRAPS);
315 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS);
316 void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS);
317 bool verify_unqualified_name(char* name, unsigned int length, int type);
318 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length);
319 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS);
321 bool is_anonymous() {
322 assert(EnableInvokeDynamic || _host_klass.is_null(), "");
323 return _host_klass.not_null();
324 }
325 bool has_cp_patch_at(int index) {
326 assert(EnableInvokeDynamic, "");
327 assert(index >= 0, "oob");
328 return (_cp_patches != NULL
329 && index < _cp_patches->length()
330 && _cp_patches->adr_at(index)->not_null());
331 }
332 Handle cp_patch_at(int index) {
333 assert(has_cp_patch_at(index), "oob");
334 return _cp_patches->at(index);
335 }
336 Handle clear_cp_patch_at(int index) {
337 Handle patch = cp_patch_at(index);
338 _cp_patches->at_put(index, Handle());
339 assert(!has_cp_patch_at(index), "");
340 return patch;
341 }
342 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS);
344 // Wrapper for constantTag.is_klass_[or_]reference.
345 // In older versions of the VM, Klass*s cannot sneak into early phases of
346 // constant pool construction, but in later versions they can.
347 // %%% Let's phase out the old is_klass_reference.
348 bool is_klass_reference(constantPoolHandle cp, int index) {
349 return (EnableInvokeDynamic
350 ? cp->tag_at(index).is_klass_or_reference()
351 : cp->tag_at(index).is_klass_reference());
352 }
354 public:
355 // Constructor
356 ClassFileParser(ClassFileStream* st) { set_stream(st); }
358 // Parse .class file and return new Klass*. The Klass* is not hooked up
359 // to the system dictionary or any other structures, so a .class file can
360 // be loaded several times if desired.
361 // The system dictionary hookup is done by the caller.
362 //
363 // "parsed_name" is updated by this method, and is the name found
364 // while parsing the stream.
365 instanceKlassHandle parseClassFile(Symbol* name,
366 ClassLoaderData* loader_data,
367 Handle protection_domain,
368 TempNewSymbol& parsed_name,
369 bool verify,
370 TRAPS) {
371 KlassHandle no_host_klass;
372 return parseClassFile(name, loader_data, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD);
373 }
374 instanceKlassHandle parseClassFile(Symbol* name,
375 ClassLoaderData* loader_data,
376 Handle protection_domain,
377 KlassHandle host_klass,
378 GrowableArray<Handle>* cp_patches,
379 TempNewSymbol& parsed_name,
380 bool verify,
381 TRAPS);
383 // Verifier checks
384 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS);
385 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS);
386 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS);
387 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS);
388 };
390 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
