Wed, 01 May 2013 08:07:59 -0700
8013418: assert(i == total_args_passed) in AdapterHandlerLibrary::get_adapter since 8-b87
Summary: Do not treat static methods as miranda methods.
Reviewed-by: dholmes, acorn
1 /*
2 * Copyright (c) 2003, 2013, 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 */
25 #include "precompiled.hpp"
26 #include "interpreter/interpreter.hpp"
27 #include "memory/gcLocker.hpp"
28 #include "memory/heapInspection.hpp"
29 #include "memory/metadataFactory.hpp"
30 #include "oops/constMethod.hpp"
31 #include "oops/method.hpp"
33 // Static initialization
34 const u2 ConstMethod::MAX_IDNUM = 0xFFFE;
35 const u2 ConstMethod::UNSET_IDNUM = 0xFFFF;
37 ConstMethod* ConstMethod::allocate(ClassLoaderData* loader_data,
38 int byte_code_size,
39 InlineTableSizes* sizes,
40 MethodType method_type,
41 TRAPS) {
42 int size = ConstMethod::size(byte_code_size, sizes);
43 return new (loader_data, size, true, THREAD) ConstMethod(
44 byte_code_size, sizes, method_type, size);
45 }
47 ConstMethod::ConstMethod(int byte_code_size,
48 InlineTableSizes* sizes,
49 MethodType method_type,
50 int size) {
52 No_Safepoint_Verifier no_safepoint;
53 init_fingerprint();
54 set_constants(NULL);
55 set_stackmap_data(NULL);
56 set_code_size(byte_code_size);
57 set_constMethod_size(size);
58 set_inlined_tables_length(sizes); // sets _flags
59 set_method_type(method_type);
60 assert(this->size() == size, "wrong size for object");
61 set_name_index(0);
62 set_signature_index(0);
63 set_constants(NULL);
64 set_max_stack(0);
65 set_max_locals(0);
66 set_method_idnum(0);
67 set_size_of_parameters(0);
68 }
70 // Accessor that copies to metadata.
71 void ConstMethod::copy_stackmap_data(ClassLoaderData* loader_data,
72 u1* sd, int length, TRAPS) {
73 _stackmap_data = MetadataFactory::new_array<u1>(loader_data, length, CHECK);
74 memcpy((void*)_stackmap_data->adr_at(0), (void*)sd, length);
75 }
77 // Deallocate metadata fields associated with ConstMethod*
78 void ConstMethod::deallocate_contents(ClassLoaderData* loader_data) {
79 if (stackmap_data() != NULL) {
80 MetadataFactory::free_array<u1>(loader_data, stackmap_data());
81 }
82 set_stackmap_data(NULL);
84 // deallocate annotation arrays
85 if (has_method_annotations())
86 MetadataFactory::free_array<u1>(loader_data, method_annotations());
87 if (has_parameter_annotations())
88 MetadataFactory::free_array<u1>(loader_data, parameter_annotations());
89 if (has_type_annotations())
90 MetadataFactory::free_array<u1>(loader_data, type_annotations());
91 if (has_default_annotations())
92 MetadataFactory::free_array<u1>(loader_data, default_annotations());
93 }
95 // How big must this constMethodObject be?
97 int ConstMethod::size(int code_size,
98 InlineTableSizes* sizes) {
99 int extra_bytes = code_size;
100 if (sizes->compressed_linenumber_size() > 0) {
101 extra_bytes += sizes->compressed_linenumber_size();
102 }
103 if (sizes->checked_exceptions_length() > 0) {
104 extra_bytes += sizeof(u2);
105 extra_bytes += sizes->checked_exceptions_length() * sizeof(CheckedExceptionElement);
106 }
107 if (sizes->localvariable_table_length() > 0) {
108 extra_bytes += sizeof(u2);
109 extra_bytes +=
110 sizes->localvariable_table_length() * sizeof(LocalVariableTableElement);
111 }
112 if (sizes->exception_table_length() > 0) {
113 extra_bytes += sizeof(u2);
114 extra_bytes += sizes->exception_table_length() * sizeof(ExceptionTableElement);
115 }
116 if (sizes->generic_signature_index() != 0) {
117 extra_bytes += sizeof(u2);
118 }
119 if (sizes->method_parameters_length() > 0) {
120 extra_bytes += sizeof(u2);
121 extra_bytes += sizes->method_parameters_length() * sizeof(MethodParametersElement);
122 }
124 // Align sizes up to a word.
125 extra_bytes = align_size_up(extra_bytes, BytesPerWord);
127 // One pointer per annotation array
128 if (sizes->method_annotations_length() > 0) {
129 extra_bytes += sizeof(AnnotationArray*);
130 }
131 if (sizes->parameter_annotations_length() > 0) {
132 extra_bytes += sizeof(AnnotationArray*);
133 }
134 if (sizes->type_annotations_length() > 0) {
135 extra_bytes += sizeof(AnnotationArray*);
136 }
137 if (sizes->default_annotations_length() > 0) {
138 extra_bytes += sizeof(AnnotationArray*);
139 }
141 int extra_words = align_size_up(extra_bytes, BytesPerWord) / BytesPerWord;
142 assert(extra_words == extra_bytes/BytesPerWord, "should already be aligned");
143 return align_object_size(header_size() + extra_words);
144 }
146 Method* ConstMethod::method() const {
147 return _constants->pool_holder()->method_with_idnum(_method_idnum);
148 }
150 // linenumber table - note that length is unknown until decompression,
151 // see class CompressedLineNumberReadStream.
153 u_char* ConstMethod::compressed_linenumber_table() const {
154 // Located immediately following the bytecodes.
155 assert(has_linenumber_table(), "called only if table is present");
156 return code_end();
157 }
159 // Last short in ConstMethod* before annotations
160 u2* ConstMethod::last_u2_element() const {
161 int offset = 0;
162 if (has_method_annotations()) offset++;
163 if (has_parameter_annotations()) offset++;
164 if (has_type_annotations()) offset++;
165 if (has_default_annotations()) offset++;
166 return (u2*)((AnnotationArray**)constMethod_end() - offset) - 1;
167 }
169 u2* ConstMethod::generic_signature_index_addr() const {
170 // Located at the end of the constMethod.
171 assert(has_generic_signature(), "called only if generic signature exists");
172 return last_u2_element();
173 }
175 u2* ConstMethod::method_parameters_length_addr() const {
176 assert(has_method_parameters(), "called only if table is present");
177 return has_generic_signature() ? (last_u2_element() - 1) :
178 last_u2_element();
179 }
181 u2* ConstMethod::checked_exceptions_length_addr() const {
182 // Located immediately before the generic signature index.
183 assert(has_checked_exceptions(), "called only if table is present");
184 if(has_method_parameters()) {
185 // If method parameters present, locate immediately before them.
186 return (u2*)method_parameters_start() - 1;
187 } else {
188 // Else, the exception table is at the end of the constMethod.
189 return has_generic_signature() ? (last_u2_element() - 1) :
190 last_u2_element();
191 }
192 }
194 u2* ConstMethod::exception_table_length_addr() const {
195 assert(has_exception_handler(), "called only if table is present");
196 if (has_checked_exceptions()) {
197 // If checked_exception present, locate immediately before them.
198 return (u2*) checked_exceptions_start() - 1;
199 } else {
200 if(has_method_parameters()) {
201 // If method parameters present, locate immediately before them.
202 return (u2*)method_parameters_start() - 1;
203 } else {
204 // Else, the exception table is at the end of the constMethod.
205 return has_generic_signature() ? (last_u2_element() - 1) :
206 last_u2_element();
207 }
208 }
209 }
211 u2* ConstMethod::localvariable_table_length_addr() const {
212 assert(has_localvariable_table(), "called only if table is present");
213 if (has_exception_handler()) {
214 // If exception_table present, locate immediately before them.
215 return (u2*) exception_table_start() - 1;
216 } else {
217 if (has_checked_exceptions()) {
218 // If checked_exception present, locate immediately before them.
219 return (u2*) checked_exceptions_start() - 1;
220 } else {
221 if(has_method_parameters()) {
222 // If method parameters present, locate immediately before them.
223 return (u2*)method_parameters_start() - 1;
224 } else {
225 // Else, the exception table is at the end of the constMethod.
226 return has_generic_signature() ? (last_u2_element() - 1) :
227 last_u2_element();
228 }
229 }
230 }
231 }
233 // Update the flags to indicate the presence of these optional fields.
234 void ConstMethod::set_inlined_tables_length(InlineTableSizes* sizes) {
235 _flags = 0;
236 if (sizes->compressed_linenumber_size() > 0)
237 _flags |= _has_linenumber_table;
238 if (sizes->generic_signature_index() != 0)
239 _flags |= _has_generic_signature;
240 if (sizes->method_parameters_length() > 0)
241 _flags |= _has_method_parameters;
242 if (sizes->checked_exceptions_length() > 0)
243 _flags |= _has_checked_exceptions;
244 if (sizes->exception_table_length() > 0)
245 _flags |= _has_exception_table;
246 if (sizes->localvariable_table_length() > 0)
247 _flags |= _has_localvariable_table;
249 // annotations, they are all pointer sized embedded objects so don't have
250 // a length embedded also.
251 if (sizes->method_annotations_length() > 0)
252 _flags |= _has_method_annotations;
253 if (sizes->parameter_annotations_length() > 0)
254 _flags |= _has_parameter_annotations;
255 if (sizes->type_annotations_length() > 0)
256 _flags |= _has_type_annotations;
257 if (sizes->default_annotations_length() > 0)
258 _flags |= _has_default_annotations;
260 // This code is extremely brittle and should possibly be revised.
261 // The *_length_addr functions walk backwards through the
262 // constMethod data, using each of the length indexes ahead of them,
263 // as well as the flags variable. Therefore, the indexes must be
264 // initialized in reverse order, or else they will compute the wrong
265 // offsets. Moving the initialization of _flags into a separate
266 // block solves *half* of the problem, but the following part will
267 // still break if the order is not exactly right.
268 //
269 // Also, the servicability agent needs to be informed anytime
270 // anything is added here. It might be advisable to have some sort
271 // of indication of this inline.
272 if (sizes->generic_signature_index() != 0)
273 *(generic_signature_index_addr()) = sizes->generic_signature_index();
274 // New data should probably go here.
275 if (sizes->method_parameters_length() > 0)
276 *(method_parameters_length_addr()) = sizes->method_parameters_length();
277 if (sizes->checked_exceptions_length() > 0)
278 *(checked_exceptions_length_addr()) = sizes->checked_exceptions_length();
279 if (sizes->exception_table_length() > 0)
280 *(exception_table_length_addr()) = sizes->exception_table_length();
281 if (sizes->localvariable_table_length() > 0)
282 *(localvariable_table_length_addr()) = sizes->localvariable_table_length();
283 }
285 int ConstMethod::method_parameters_length() const {
286 return has_method_parameters() ? *(method_parameters_length_addr()) : 0;
287 }
289 MethodParametersElement* ConstMethod::method_parameters_start() const {
290 u2* addr = method_parameters_length_addr();
291 u2 length = *addr;
292 assert(length > 0, "should only be called if table is present");
293 addr -= length * sizeof(MethodParametersElement) / sizeof(u2);
294 return (MethodParametersElement*) addr;
295 }
298 int ConstMethod::checked_exceptions_length() const {
299 return has_checked_exceptions() ? *(checked_exceptions_length_addr()) : 0;
300 }
303 CheckedExceptionElement* ConstMethod::checked_exceptions_start() const {
304 u2* addr = checked_exceptions_length_addr();
305 u2 length = *addr;
306 assert(length > 0, "should only be called if table is present");
307 addr -= length * sizeof(CheckedExceptionElement) / sizeof(u2);
308 return (CheckedExceptionElement*) addr;
309 }
312 int ConstMethod::localvariable_table_length() const {
313 return has_localvariable_table() ? *(localvariable_table_length_addr()) : 0;
314 }
317 LocalVariableTableElement* ConstMethod::localvariable_table_start() const {
318 u2* addr = localvariable_table_length_addr();
319 u2 length = *addr;
320 assert(length > 0, "should only be called if table is present");
321 addr -= length * sizeof(LocalVariableTableElement) / sizeof(u2);
322 return (LocalVariableTableElement*) addr;
323 }
325 int ConstMethod::exception_table_length() const {
326 return has_exception_handler() ? *(exception_table_length_addr()) : 0;
327 }
329 ExceptionTableElement* ConstMethod::exception_table_start() const {
330 u2* addr = exception_table_length_addr();
331 u2 length = *addr;
332 assert(length > 0, "should only be called if table is present");
333 addr -= length * sizeof(ExceptionTableElement) / sizeof(u2);
334 return (ExceptionTableElement*)addr;
335 }
337 AnnotationArray** ConstMethod::method_annotations_addr() const {
338 assert(has_method_annotations(), "should only be called if method annotations are present");
339 return (AnnotationArray**)constMethod_end() - 1;
340 }
342 AnnotationArray** ConstMethod::parameter_annotations_addr() const {
343 assert(has_parameter_annotations(), "should only be called if method parameter annotations are present");
344 int offset = 1;
345 if (has_method_annotations()) offset++;
346 return (AnnotationArray**)constMethod_end() - offset;
347 }
349 AnnotationArray** ConstMethod::type_annotations_addr() const {
350 assert(has_type_annotations(), "should only be called if method type annotations are present");
351 int offset = 1;
352 if (has_method_annotations()) offset++;
353 if (has_parameter_annotations()) offset++;
354 return (AnnotationArray**)constMethod_end() - offset;
355 }
357 AnnotationArray** ConstMethod::default_annotations_addr() const {
358 assert(has_default_annotations(), "should only be called if method default annotations are present");
359 int offset = 1;
360 if (has_method_annotations()) offset++;
361 if (has_parameter_annotations()) offset++;
362 if (has_type_annotations()) offset++;
363 return (AnnotationArray**)constMethod_end() - offset;
364 }
366 // copy annotations from 'cm' to 'this'
367 void ConstMethod::copy_annotations_from(ConstMethod* cm) {
368 if (cm->has_method_annotations()) {
369 assert(has_method_annotations(), "should be allocated already");
370 set_method_annotations(cm->method_annotations());
371 }
372 if (cm->has_parameter_annotations()) {
373 assert(has_parameter_annotations(), "should be allocated already");
374 set_parameter_annotations(cm->parameter_annotations());
375 }
376 if (cm->has_type_annotations()) {
377 assert(has_type_annotations(), "should be allocated already");
378 set_type_annotations(cm->type_annotations());
379 }
380 if (cm->has_default_annotations()) {
381 assert(has_default_annotations(), "should be allocated already");
382 set_default_annotations(cm->default_annotations());
383 }
384 }
386 // Printing
388 void ConstMethod::print_on(outputStream* st) const {
389 ResourceMark rm;
390 assert(is_constMethod(), "must be constMethod");
391 st->print_cr(internal_name());
392 st->print(" - method: " INTPTR_FORMAT " ", (address)method());
393 method()->print_value_on(st); st->cr();
394 if (has_stackmap_table()) {
395 st->print(" - stackmap data: ");
396 stackmap_data()->print_value_on(st);
397 st->cr();
398 }
399 }
401 // Short version of printing ConstMethod* - just print the name of the
402 // method it belongs to.
403 void ConstMethod::print_value_on(outputStream* st) const {
404 assert(is_constMethod(), "must be constMethod");
405 st->print(" const part of method " );
406 method()->print_value_on(st);
407 }
409 #if INCLUDE_SERVICES
410 // Size Statistics
411 void ConstMethod::collect_statistics(KlassSizeStats *sz) const {
412 int n1, n2, n3;
413 sz->_const_method_bytes += (n1 = sz->count(this));
414 sz->_bytecode_bytes += (n2 = code_size());
415 sz->_stackmap_bytes += (n3 = sz->count_array(stackmap_data()));
417 // Count method annotations
418 int a1 = 0, a2 = 0, a3 = 0, a4 = 0;
419 if (has_method_annotations()) {
420 sz->_methods_annotations_bytes += (a1 = sz->count_array(method_annotations()));
421 }
422 if (has_parameter_annotations()) {
423 sz->_methods_parameter_annotations_bytes += (a2 = sz->count_array(parameter_annotations()));
424 }
425 if (has_type_annotations()) {
426 sz->_methods_type_annotations_bytes += (a3 = sz->count_array(type_annotations()));
427 }
428 if (has_default_annotations()) {
429 sz->_methods_default_annotations_bytes += (a4 = sz->count_array(default_annotations()));
430 }
432 int size_annotations = a1 + a2 + a3 + a4;
434 sz->_method_all_bytes += n1 + n3 + size_annotations; // note: n2 is part of n3
435 sz->_ro_bytes += n1 + n3 + size_annotations;
436 }
437 #endif // INCLUDE_SERVICES
439 // Verification
441 void ConstMethod::verify_on(outputStream* st) {
442 guarantee(is_constMethod(), "object must be constMethod");
443 guarantee(is_metadata(), err_msg("Should be metadata " PTR_FORMAT, this));
445 // Verification can occur during oop construction before the method or
446 // other fields have been initialized.
447 guarantee(method()->is_method(), "should be method");
449 address m_end = (address)((intptr_t) this + size());
450 address compressed_table_start = code_end();
451 guarantee(compressed_table_start <= m_end, "invalid method layout");
452 address compressed_table_end = compressed_table_start;
453 // Verify line number table
454 if (has_linenumber_table()) {
455 CompressedLineNumberReadStream stream(compressed_linenumber_table());
456 while (stream.read_pair()) {
457 guarantee(stream.bci() >= 0 && stream.bci() <= code_size(), "invalid bci in line number table");
458 }
459 compressed_table_end += stream.position();
460 }
461 guarantee(compressed_table_end <= m_end, "invalid method layout");
462 // Verify checked exceptions, exception table and local variable tables
463 if (has_method_parameters()) {
464 u2* addr = method_parameters_length_addr();
465 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout");
466 }
467 if (has_checked_exceptions()) {
468 u2* addr = checked_exceptions_length_addr();
469 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout");
470 }
471 if (has_exception_handler()) {
472 u2* addr = exception_table_length_addr();
473 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout");
474 }
475 if (has_localvariable_table()) {
476 u2* addr = localvariable_table_length_addr();
477 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout");
478 }
479 // Check compressed_table_end relative to uncompressed_table_start
480 u2* uncompressed_table_start;
481 if (has_localvariable_table()) {
482 uncompressed_table_start = (u2*) localvariable_table_start();
483 } else if (has_exception_handler()) {
484 uncompressed_table_start = (u2*) exception_table_start();
485 } else if (has_checked_exceptions()) {
486 uncompressed_table_start = (u2*) checked_exceptions_start();
487 } else if (has_method_parameters()) {
488 uncompressed_table_start = (u2*) method_parameters_start();
489 } else {
490 uncompressed_table_start = (u2*) m_end;
491 }
492 int gap = (intptr_t) uncompressed_table_start - (intptr_t) compressed_table_end;
493 int max_gap = align_object_size(1)*BytesPerWord;
494 guarantee(gap >= 0 && gap < max_gap, "invalid method layout");
495 }