Mercurial > hg > truffle
annotate src/share/vm/oops/methodOop.hpp @ 1877:a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
Summary: Repair stackmap table attribute when relocating bytecode
Reviewed-by: acorn, never
author | kamg |
---|---|
date | Thu, 21 Oct 2010 10:10:23 -0400 |
parents | d257356e35f0 |
children | f95d63e2154a |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1507
diff
changeset
|
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1507
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1507
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1507
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // A methodOop represents a Java method. | |
26 // | |
27 // Memory layout (each line represents a word). Note that most applications load thousands of methods, | |
28 // so keeping the size of this structure small has a big impact on footprint. | |
29 // | |
30 // We put all oops and method_size first for better gc cache locality. | |
31 // | |
32 // The actual bytecodes are inlined after the end of the methodOopDesc struct. | |
33 // | |
34 // There are bits in the access_flags telling whether inlined tables are present. | |
35 // Note that accessing the line number and local variable tables is not performance critical at all. | |
36 // Accessing the checked exceptions table is used by reflection, so we put that last to make access | |
37 // to it fast. | |
38 // | |
39 // The line number table is compressed and inlined following the byte codes. It is found as the first | |
40 // byte following the byte codes. The checked exceptions table and the local variable table are inlined | |
41 // after the line number table, and indexed from the end of the method. We do not compress the checked | |
42 // exceptions table since the average length is less than 2, and do not bother to compress the local | |
43 // variable table either since it is mostly absent. | |
44 // | |
45 // Note that native_function and signature_handler has to be at fixed offsets (required by the interpreter) | |
46 // | |
47 // |------------------------------------------------------| | |
48 // | header | | |
49 // | klass | | |
50 // |------------------------------------------------------| | |
51 // | constMethodOop (oop) | | |
52 // | constants (oop) | | |
53 // |------------------------------------------------------| | |
54 // | methodData (oop) | | |
55 // | interp_invocation_count | | |
56 // |------------------------------------------------------| | |
57 // | access_flags | | |
58 // | vtable_index | | |
59 // |------------------------------------------------------| | |
60 // | result_index (C++ interpreter only) | | |
61 // |------------------------------------------------------| | |
62 // | method_size | max_stack | | |
63 // | max_locals | size_of_parameters | | |
64 // |------------------------------------------------------| | |
1783 | 65 // | intrinsic_id, (unused) | throwout_count | |
0 | 66 // |------------------------------------------------------| |
1783 | 67 // | num_breakpoints | (unused) | |
0 | 68 // |------------------------------------------------------| |
69 // | invocation_counter | | |
70 // | backedge_counter | | |
71 // |------------------------------------------------------| | |
72 // | code (pointer) | | |
73 // | i2i (pointer) | | |
74 // | adapter (pointer) | | |
75 // | from_compiled_entry (pointer) | | |
76 // | from_interpreted_entry (pointer) | | |
77 // |------------------------------------------------------| | |
78 // | native_function (present only if native) | | |
79 // | signature_handler (present only if native) | | |
80 // |------------------------------------------------------| | |
81 | |
82 | |
83 class CheckedExceptionElement; | |
84 class LocalVariableTableElement; | |
85 class AdapterHandlerEntry; | |
86 class methodDataOopDesc; | |
87 | |
88 class methodOopDesc : public oopDesc { | |
89 friend class methodKlass; | |
90 friend class VMStructs; | |
91 private: | |
92 constMethodOop _constMethod; // Method read-only data. | |
93 constantPoolOop _constants; // Constant pool | |
94 methodDataOop _method_data; | |
1783 | 95 int _interpreter_invocation_count; // Count of times invoked (reused as prev_event_count in tiered) |
0 | 96 AccessFlags _access_flags; // Access flags |
97 int _vtable_index; // vtable index of this method (see VtableIndexFlag) | |
98 // note: can have vtables with >2**16 elements (because of inheritance) | |
99 #ifdef CC_INTERP | |
100 int _result_index; // C++ interpreter needs for converting results to/from stack | |
101 #endif | |
102 u2 _method_size; // size of this object | |
103 u2 _max_stack; // Maximum number of entries on the expression stack | |
104 u2 _max_locals; // Number of local variables used by this method | |
105 u2 _size_of_parameters; // size of the parameter block (receiver + arguments) in words | |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
106 u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none) |
0 | 107 u2 _interpreter_throwout_count; // Count of times method was exited via exception while interpreting |
108 u2 _number_of_breakpoints; // fullspeed debugging support | |
109 InvocationCounter _invocation_counter; // Incremented before each activation of the method - used to trigger frequency-based optimizations | |
110 InvocationCounter _backedge_counter; // Incremented before each backedge taken - used to trigger frequencey-based optimizations | |
1783 | 111 |
0 | 112 #ifndef PRODUCT |
113 int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging) | |
114 #endif | |
115 // Entry point for calling both from and to the interpreter. | |
116 address _i2i_entry; // All-args-on-stack calling convention | |
117 // Adapter blob (i2c/c2i) for this methodOop. Set once when method is linked. | |
118 AdapterHandlerEntry* _adapter; | |
119 // Entry point for calling from compiled code, to compiled code if it exists | |
120 // or else the interpreter. | |
121 volatile address _from_compiled_entry; // Cache of: _code ? _code->entry_point() : _adapter->c2i_entry() | |
122 // The entry point for calling both from and to compiled code is | |
123 // "_code->entry_point()". Because of tiered compilation and de-opt, this | |
124 // field can come and go. It can transition from NULL to not-null at any | |
125 // time (whenever a compile completes). It can transition from not-null to | |
126 // NULL only at safepoints (because of a de-opt). | |
127 nmethod* volatile _code; // Points to the corresponding piece of native code | |
128 volatile address _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry | |
129 | |
130 public: | |
518
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
196
diff
changeset
|
131 |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
196
diff
changeset
|
132 static const bool IsUnsafeConc = false; |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
196
diff
changeset
|
133 static const bool IsSafeConc = true; |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
196
diff
changeset
|
134 |
0 | 135 // accessors for instance variables |
136 constMethodOop constMethod() const { return _constMethod; } | |
137 void set_constMethod(constMethodOop xconst) { oop_store_without_check((oop*)&_constMethod, (oop)xconst); } | |
138 | |
139 | |
140 static address make_adapters(methodHandle mh, TRAPS); | |
141 volatile address from_compiled_entry() const { return (address)OrderAccess::load_ptr_acquire(&_from_compiled_entry); } | |
142 volatile address from_interpreted_entry() const{ return (address)OrderAccess::load_ptr_acquire(&_from_interpreted_entry); } | |
143 | |
144 // access flag | |
145 AccessFlags access_flags() const { return _access_flags; } | |
146 void set_access_flags(AccessFlags flags) { _access_flags = flags; } | |
147 | |
148 // name | |
149 symbolOop name() const { return _constants->symbol_at(name_index()); } | |
150 int name_index() const { return constMethod()->name_index(); } | |
151 void set_name_index(int index) { constMethod()->set_name_index(index); } | |
152 | |
153 // signature | |
154 symbolOop signature() const { return _constants->symbol_at(signature_index()); } | |
155 int signature_index() const { return constMethod()->signature_index(); } | |
156 void set_signature_index(int index) { constMethod()->set_signature_index(index); } | |
157 | |
158 // generics support | |
159 symbolOop generic_signature() const { int idx = generic_signature_index(); return ((idx != 0) ? _constants->symbol_at(idx) : (symbolOop)NULL); } | |
160 int generic_signature_index() const { return constMethod()->generic_signature_index(); } | |
161 void set_generic_signature_index(int index) { constMethod()->set_generic_signature_index(index); } | |
162 | |
163 // annotations support | |
164 typeArrayOop annotations() const { return instanceKlass::cast(method_holder())->get_method_annotations_of(method_idnum()); } | |
165 typeArrayOop parameter_annotations() const { return instanceKlass::cast(method_holder())->get_method_parameter_annotations_of(method_idnum()); } | |
166 typeArrayOop annotation_default() const { return instanceKlass::cast(method_holder())->get_method_default_annotations_of(method_idnum()); } | |
167 | |
168 #ifdef CC_INTERP | |
169 void set_result_index(BasicType type); | |
170 int result_index() { return _result_index; } | |
171 #endif | |
172 | |
173 // Helper routine: get klass name + "." + method name + signature as | |
174 // C string, for the purpose of providing more useful NoSuchMethodErrors | |
175 // and fatal error handling. The string is allocated in resource | |
176 // area if a buffer is not provided by the caller. | |
177 char* name_and_sig_as_C_string(); | |
178 char* name_and_sig_as_C_string(char* buf, int size); | |
179 | |
180 // Static routine in the situations we don't have a methodOop | |
181 static char* name_and_sig_as_C_string(Klass* klass, symbolOop method_name, symbolOop signature); | |
182 static char* name_and_sig_as_C_string(Klass* klass, symbolOop method_name, symbolOop signature, char* buf, int size); | |
183 | |
184 // JVMTI breakpoints | |
185 Bytecodes::Code orig_bytecode_at(int bci); | |
186 void set_orig_bytecode_at(int bci, Bytecodes::Code code); | |
187 void set_breakpoint(int bci); | |
188 void clear_breakpoint(int bci); | |
189 void clear_all_breakpoints(); | |
190 // Tracking number of breakpoints, for fullspeed debugging. | |
191 // Only mutated by VM thread. | |
192 u2 number_of_breakpoints() const { return _number_of_breakpoints; } | |
193 void incr_number_of_breakpoints() { ++_number_of_breakpoints; } | |
194 void decr_number_of_breakpoints() { --_number_of_breakpoints; } | |
195 // Initialization only | |
196 void clear_number_of_breakpoints() { _number_of_breakpoints = 0; } | |
197 | |
198 // index into instanceKlass methods() array | |
199 u2 method_idnum() const { return constMethod()->method_idnum(); } | |
200 void set_method_idnum(u2 idnum) { constMethod()->set_method_idnum(idnum); } | |
201 | |
202 // code size | |
203 int code_size() const { return constMethod()->code_size(); } | |
204 | |
205 // method size | |
206 int method_size() const { return _method_size; } | |
207 void set_method_size(int size) { | |
208 assert(0 <= size && size < (1 << 16), "invalid method size"); | |
209 _method_size = size; | |
210 } | |
211 | |
212 // constant pool for klassOop holding this method | |
213 constantPoolOop constants() const { return _constants; } | |
214 void set_constants(constantPoolOop c) { oop_store_without_check((oop*)&_constants, c); } | |
215 | |
216 // max stack | |
217 int max_stack() const { return _max_stack; } | |
218 void set_max_stack(int size) { _max_stack = size; } | |
219 | |
220 // max locals | |
221 int max_locals() const { return _max_locals; } | |
222 void set_max_locals(int size) { _max_locals = size; } | |
1783 | 223 |
224 int highest_comp_level() const; | |
225 void set_highest_comp_level(int level); | |
226 int highest_osr_comp_level() const; | |
227 void set_highest_osr_comp_level(int level); | |
0 | 228 |
229 // Count of times method was exited via exception while interpreting | |
230 void interpreter_throwout_increment() { | |
231 if (_interpreter_throwout_count < 65534) { | |
232 _interpreter_throwout_count++; | |
233 } | |
234 } | |
235 | |
236 int interpreter_throwout_count() const { return _interpreter_throwout_count; } | |
237 void set_interpreter_throwout_count(int count) { _interpreter_throwout_count = count; } | |
238 | |
239 // size of parameters | |
240 int size_of_parameters() const { return _size_of_parameters; } | |
241 | |
242 bool has_stackmap_table() const { | |
243 return constMethod()->has_stackmap_table(); | |
244 } | |
245 | |
246 typeArrayOop stackmap_data() const { | |
247 return constMethod()->stackmap_data(); | |
248 } | |
249 | |
1877
a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
kamg
parents:
1793
diff
changeset
|
250 void set_stackmap_data(typeArrayOop sd) { |
a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
kamg
parents:
1793
diff
changeset
|
251 constMethod()->set_stackmap_data(sd); |
a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
kamg
parents:
1793
diff
changeset
|
252 } |
a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
kamg
parents:
1793
diff
changeset
|
253 |
0 | 254 // exception handler table |
255 typeArrayOop exception_table() const | |
256 { return constMethod()->exception_table(); } | |
257 void set_exception_table(typeArrayOop e) | |
258 { constMethod()->set_exception_table(e); } | |
259 bool has_exception_handler() const | |
260 { return constMethod()->has_exception_handler(); } | |
261 | |
262 // Finds the first entry point bci of an exception handler for an | |
263 // exception of klass ex_klass thrown at throw_bci. A value of NULL | |
264 // for ex_klass indicates that the exception klass is not known; in | |
265 // this case it matches any constraint class. Returns -1 if the | |
266 // exception cannot be handled in this method. The handler | |
267 // constraint classes are loaded if necessary. Note that this may | |
268 // throw an exception if loading of the constraint classes causes | |
269 // an IllegalAccessError (bugid 4307310) or an OutOfMemoryError. | |
270 // If an exception is thrown, returns the bci of the | |
271 // exception handler which caused the exception to be thrown, which | |
272 // is needed for proper retries. See, for example, | |
273 // InterpreterRuntime::exception_handler_for_exception. | |
274 int fast_exception_handler_bci_for(KlassHandle ex_klass, int throw_bci, TRAPS); | |
275 | |
276 // method data access | |
277 methodDataOop method_data() const { | |
278 return _method_data; | |
279 } | |
280 void set_method_data(methodDataOop data) { | |
281 oop_store_without_check((oop*)&_method_data, (oop)data); | |
282 } | |
283 | |
284 // invocation counter | |
1783 | 285 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
286 InvocationCounter* backedge_counter() { return &_backedge_counter; } | |
287 | |
288 int invocation_count(); | |
289 int backedge_count(); | |
290 | |
291 bool was_executed_more_than(int n); | |
292 bool was_never_executed() { return !was_executed_more_than(0); } | |
0 | 293 |
294 static void build_interpreter_method_data(methodHandle method, TRAPS); | |
295 | |
1783 | 296 int interpreter_invocation_count() { |
297 if (TieredCompilation) return invocation_count(); | |
298 else return _interpreter_invocation_count; | |
299 } | |
0 | 300 void set_interpreter_invocation_count(int count) { _interpreter_invocation_count = count; } |
1783 | 301 int increment_interpreter_invocation_count() { |
302 if (TieredCompilation) ShouldNotReachHere(); | |
303 return ++_interpreter_invocation_count; | |
304 } | |
0 | 305 |
306 #ifndef PRODUCT | |
1783 | 307 int compiled_invocation_count() const { return _compiled_invocation_count; } |
0 | 308 void set_compiled_invocation_count(int count) { _compiled_invocation_count = count; } |
309 #endif // not PRODUCT | |
310 | |
605 | 311 // Clear (non-shared space) pointers which could not be relevant |
0 | 312 // if this (shared) method were mapped into another JVM. |
313 void remove_unshareable_info(); | |
314 | |
315 // nmethod/verified compiler entry | |
316 address verified_code_entry(); | |
317 bool check_code() const; // Not inline to avoid circular ref | |
318 nmethod* volatile code() const { assert( check_code(), "" ); return (nmethod *)OrderAccess::load_ptr_acquire(&_code); } | |
319 void clear_code(); // Clear out any compiled code | |
1202 | 320 static void set_code(methodHandle mh, nmethod* code); |
0 | 321 void set_adapter_entry(AdapterHandlerEntry* adapter) { _adapter = adapter; } |
322 address get_i2c_entry(); | |
323 address get_c2i_entry(); | |
324 address get_c2i_unverified_entry(); | |
325 AdapterHandlerEntry* adapter() { return _adapter; } | |
326 // setup entry points | |
327 void link_method(methodHandle method, TRAPS); | |
328 // clear entry points. Used by sharing code | |
329 void unlink_method(); | |
330 | |
331 // vtable index | |
332 enum VtableIndexFlag { | |
333 // Valid vtable indexes are non-negative (>= 0). | |
334 // These few negative values are used as sentinels. | |
710 | 335 highest_unused_vtable_index_value = -5, |
0 | 336 invalid_vtable_index = -4, // distinct from any valid vtable index |
337 garbage_vtable_index = -3, // not yet linked; no vtable layout yet | |
338 nonvirtual_vtable_index = -2 // there is no need for vtable dispatch | |
339 // 6330203 Note: Do not use -1, which was overloaded with many meanings. | |
340 }; | |
341 DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; }) | |
342 int vtable_index() const { assert(valid_vtable_index(), ""); | |
343 return _vtable_index; } | |
344 void set_vtable_index(int index) { _vtable_index = index; } | |
345 | |
346 // interpreter entry | |
347 address interpreter_entry() const { return _i2i_entry; } | |
348 // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry | |
349 void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; } | |
350 int interpreter_kind(void) { | |
351 return constMethod()->interpreter_kind(); | |
352 } | |
353 void set_interpreter_kind(); | |
354 void set_interpreter_kind(int kind) { | |
355 constMethod()->set_interpreter_kind(kind); | |
356 } | |
357 | |
358 // native function (used for native methods only) | |
359 enum { | |
360 native_bind_event_is_interesting = true | |
361 }; | |
362 address native_function() const { return *(native_function_addr()); } | |
363 // Must specify a real function (not NULL). | |
364 // Use clear_native_function() to unregister. | |
365 void set_native_function(address function, bool post_event_flag); | |
366 bool has_native_function() const; | |
367 void clear_native_function(); | |
368 | |
369 // signature handler (used for native methods only) | |
370 address signature_handler() const { return *(signature_handler_addr()); } | |
371 void set_signature_handler(address handler); | |
372 | |
373 // Interpreter oopmap support | |
374 void mask_for(int bci, InterpreterOopMap* mask); | |
375 | |
376 #ifndef PRODUCT | |
377 // operations on invocation counter | |
1783 | 378 void print_invocation_count(); |
0 | 379 #endif |
380 | |
381 // byte codes | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
977
diff
changeset
|
382 void set_code(address code) { return constMethod()->set_code(code); } |
0 | 383 address code_base() const { return constMethod()->code_base(); } |
384 bool contains(address bcp) const { return constMethod()->contains(bcp); } | |
385 | |
386 // prints byte codes | |
387 void print_codes() const { print_codes_on(tty); } | |
388 void print_codes_on(outputStream* st) const PRODUCT_RETURN; | |
389 void print_codes_on(int from, int to, outputStream* st) const PRODUCT_RETURN; | |
390 | |
391 // checked exceptions | |
392 int checked_exceptions_length() const | |
393 { return constMethod()->checked_exceptions_length(); } | |
394 CheckedExceptionElement* checked_exceptions_start() const | |
395 { return constMethod()->checked_exceptions_start(); } | |
396 | |
397 // localvariable table | |
398 bool has_localvariable_table() const | |
399 { return constMethod()->has_localvariable_table(); } | |
400 int localvariable_table_length() const | |
401 { return constMethod()->localvariable_table_length(); } | |
402 LocalVariableTableElement* localvariable_table_start() const | |
403 { return constMethod()->localvariable_table_start(); } | |
404 | |
405 bool has_linenumber_table() const | |
406 { return constMethod()->has_linenumber_table(); } | |
407 u_char* compressed_linenumber_table() const | |
408 { return constMethod()->compressed_linenumber_table(); } | |
409 | |
410 // method holder (the klassOop holding this method) | |
411 klassOop method_holder() const { return _constants->pool_holder(); } | |
412 | |
413 void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments) | |
414 symbolOop klass_name() const; // returns the name of the method holder | |
415 BasicType result_type() const; // type of the method result | |
416 int result_type_index() const; // type index of the method result | |
417 bool is_returning_oop() const { BasicType r = result_type(); return (r == T_OBJECT || r == T_ARRAY); } | |
418 bool is_returning_fp() const { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); } | |
419 | |
420 // Checked exceptions thrown by this method (resolved to mirrors) | |
421 objArrayHandle resolved_checked_exceptions(TRAPS) { return resolved_checked_exceptions_impl(this, THREAD); } | |
422 | |
423 // Access flags | |
424 bool is_public() const { return access_flags().is_public(); } | |
425 bool is_private() const { return access_flags().is_private(); } | |
426 bool is_protected() const { return access_flags().is_protected(); } | |
427 bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } | |
428 bool is_static() const { return access_flags().is_static(); } | |
429 bool is_final() const { return access_flags().is_final(); } | |
430 bool is_synchronized() const { return access_flags().is_synchronized();} | |
431 bool is_native() const { return access_flags().is_native(); } | |
432 bool is_abstract() const { return access_flags().is_abstract(); } | |
433 bool is_strict() const { return access_flags().is_strict(); } | |
434 bool is_synthetic() const { return access_flags().is_synthetic(); } | |
435 | |
436 // returns true if contains only return operation | |
437 bool is_empty_method() const; | |
438 | |
439 // returns true if this is a vanilla constructor | |
440 bool is_vanilla_constructor() const; | |
441 | |
442 // checks method and its method holder | |
443 bool is_final_method() const; | |
444 bool is_strict_method() const; | |
445 | |
446 // true if method needs no dynamic dispatch (final and/or no vtable entry) | |
447 bool can_be_statically_bound() const; | |
448 | |
449 // returns true if the method has any backward branches. | |
450 bool has_loops() { | |
451 return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag(); | |
452 }; | |
453 | |
454 bool compute_has_loops_flag(); | |
455 | |
456 bool has_jsrs() { | |
457 return access_flags().has_jsrs(); | |
458 }; | |
459 void set_has_jsrs() { | |
460 _access_flags.set_has_jsrs(); | |
461 } | |
462 | |
463 // returns true if the method has any monitors. | |
464 bool has_monitors() const { return is_synchronized() || access_flags().has_monitor_bytecodes(); } | |
465 bool has_monitor_bytecodes() const { return access_flags().has_monitor_bytecodes(); } | |
466 | |
467 void set_has_monitor_bytecodes() { _access_flags.set_has_monitor_bytecodes(); } | |
468 | |
469 // monitor matching. This returns a conservative estimate of whether the monitorenter/monitorexit bytecodes | |
470 // propererly nest in the method. It might return false, even though they actually nest properly, since the info. | |
471 // has not been computed yet. | |
472 bool guaranteed_monitor_matching() const { return access_flags().is_monitor_matching(); } | |
473 void set_guaranteed_monitor_matching() { _access_flags.set_monitor_matching(); } | |
474 | |
475 // returns true if the method is an accessor function (setter/getter). | |
476 bool is_accessor() const; | |
477 | |
478 // returns true if the method is an initializer (<init> or <clinit>). | |
479 bool is_initializer() const; | |
480 | |
481 // compiled code support | |
482 // NOTE: code() is inherently racy as deopt can be clearing code | |
483 // simultaneously. Use with caution. | |
484 bool has_compiled_code() const { return code() != NULL; } | |
485 | |
486 // sizing | |
487 static int object_size(bool is_native); | |
488 static int header_size() { return sizeof(methodOopDesc)/HeapWordSize; } | |
489 int object_size() const { return method_size(); } | |
490 | |
491 bool object_is_parsable() const { return method_size() > 0; } | |
492 | |
493 // interpreter support | |
494 static ByteSize const_offset() { return byte_offset_of(methodOopDesc, _constMethod ); } | |
495 static ByteSize constants_offset() { return byte_offset_of(methodOopDesc, _constants ); } | |
496 static ByteSize access_flags_offset() { return byte_offset_of(methodOopDesc, _access_flags ); } | |
497 #ifdef CC_INTERP | |
498 static ByteSize result_index_offset() { return byte_offset_of(methodOopDesc, _result_index ); } | |
499 #endif /* CC_INTERP */ | |
500 static ByteSize size_of_locals_offset() { return byte_offset_of(methodOopDesc, _max_locals ); } | |
501 static ByteSize size_of_parameters_offset() { return byte_offset_of(methodOopDesc, _size_of_parameters); } | |
502 static ByteSize from_compiled_offset() { return byte_offset_of(methodOopDesc, _from_compiled_entry); } | |
503 static ByteSize code_offset() { return byte_offset_of(methodOopDesc, _code); } | |
504 static ByteSize invocation_counter_offset() { return byte_offset_of(methodOopDesc, _invocation_counter); } | |
505 static ByteSize backedge_counter_offset() { return byte_offset_of(methodOopDesc, _backedge_counter); } | |
506 static ByteSize method_data_offset() { | |
507 return byte_offset_of(methodOopDesc, _method_data); | |
508 } | |
509 static ByteSize interpreter_invocation_counter_offset() { return byte_offset_of(methodOopDesc, _interpreter_invocation_count); } | |
510 #ifndef PRODUCT | |
511 static ByteSize compiled_invocation_counter_offset() { return byte_offset_of(methodOopDesc, _compiled_invocation_count); } | |
512 #endif // not PRODUCT | |
513 static ByteSize native_function_offset() { return in_ByteSize(sizeof(methodOopDesc)); } | |
514 static ByteSize from_interpreted_offset() { return byte_offset_of(methodOopDesc, _from_interpreted_entry ); } | |
515 static ByteSize interpreter_entry_offset() { return byte_offset_of(methodOopDesc, _i2i_entry ); } | |
516 static ByteSize signature_handler_offset() { return in_ByteSize(sizeof(methodOopDesc) + wordSize); } | |
517 static ByteSize max_stack_offset() { return byte_offset_of(methodOopDesc, _max_stack ); } | |
518 | |
519 // for code generation | |
520 static int method_data_offset_in_bytes() { return offset_of(methodOopDesc, _method_data); } | |
521 static int interpreter_invocation_counter_offset_in_bytes() | |
522 { return offset_of(methodOopDesc, _interpreter_invocation_count); } | |
1793
d257356e35f0
6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents:
1783
diff
changeset
|
523 static int intrinsic_id_offset_in_bytes() { return offset_of(methodOopDesc, _intrinsic_id); } |
d257356e35f0
6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents:
1783
diff
changeset
|
524 static int intrinsic_id_size_in_bytes() { return sizeof(u1); } |
0 | 525 |
526 // Static methods that are used to implement member methods where an exposed this pointer | |
527 // is needed due to possible GCs | |
528 static objArrayHandle resolved_checked_exceptions_impl(methodOop this_oop, TRAPS); | |
529 | |
530 // Returns the byte code index from the byte code pointer | |
531 int bci_from(address bcp) const; | |
532 address bcp_from(int bci) const; | |
533 int validate_bci_from_bcx(intptr_t bcx) const; | |
534 | |
535 // Returns the line number for a bci if debugging information for the method is prowided, | |
536 // -1 is returned otherwise. | |
537 int line_number_from_bci(int bci) const; | |
538 | |
539 // Reflection support | |
540 bool is_overridden_in(klassOop k) const; | |
541 | |
710 | 542 // JSR 292 support |
543 bool is_method_handle_invoke() const { return access_flags().is_method_handle_invoke(); } | |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1208
diff
changeset
|
544 static bool is_method_handle_invoke_name(vmSymbols::SID name_sid); |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1208
diff
changeset
|
545 static bool is_method_handle_invoke_name(symbolOop name) { |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1208
diff
changeset
|
546 return is_method_handle_invoke_name(vmSymbols::find_sid(name)); |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1208
diff
changeset
|
547 } |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1138
diff
changeset
|
548 // Tests if this method is an internal adapter frame from the |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1138
diff
changeset
|
549 // MethodHandleCompiler. |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1138
diff
changeset
|
550 bool is_method_handle_adapter() const; |
710 | 551 static methodHandle make_invoke_method(KlassHandle holder, |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1208
diff
changeset
|
552 symbolHandle name, //invokeExact or invokeGeneric |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1208
diff
changeset
|
553 symbolHandle signature, //anything at all |
710 | 554 Handle method_type, |
555 TRAPS); | |
556 // these operate only on invoke methods: | |
557 oop method_handle_type() const; | |
558 static jint* method_type_offsets_chain(); // series of pointer-offsets, terminated by -1 | |
559 // presize interpreter frames for extra interpreter stack entries, if needed | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
560 // method handles want to be able to push a few extra values (e.g., a bound receiver), and |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
561 // invokedynamic sometimes needs to push a bootstrap method, call site, and arglist, |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
562 // all without checking for a stack overflow |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
563 static int extra_stack_entries() { return (EnableMethodHandles ? (int)MethodHandlePushLimit : 0) + (EnableInvokeDynamic ? 3 : 0); } |
710 | 564 static int extra_stack_words(); // = extra_stack_entries() * Interpreter::stackElementSize() |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1138
diff
changeset
|
565 |
0 | 566 // RedefineClasses() support: |
567 bool is_old() const { return access_flags().is_old(); } | |
568 void set_is_old() { _access_flags.set_is_old(); } | |
569 bool is_obsolete() const { return access_flags().is_obsolete(); } | |
570 void set_is_obsolete() { _access_flags.set_is_obsolete(); } | |
48
d8b3ef7ee3e5
6599425: 4/3 OopMapCache::lookup() can cause later crash or assert() failure
dcubed
parents:
0
diff
changeset
|
571 // see the definition in methodOop.cpp for the gory details |
d8b3ef7ee3e5
6599425: 4/3 OopMapCache::lookup() can cause later crash or assert() failure
dcubed
parents:
0
diff
changeset
|
572 bool should_not_be_cached() const; |
0 | 573 |
574 // JVMTI Native method prefixing support: | |
575 bool is_prefixed_native() const { return access_flags().is_prefixed_native(); } | |
576 void set_is_prefixed_native() { _access_flags.set_is_prefixed_native(); } | |
577 | |
578 // Rewriting support | |
579 static methodHandle clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length, | |
580 u_char* new_compressed_linenumber_table, int new_compressed_linenumber_size, TRAPS); | |
581 | |
582 // Get this method's jmethodID -- allocate if it doesn't exist | |
583 jmethodID jmethod_id() { methodHandle this_h(this); | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
856
diff
changeset
|
584 return instanceKlass::get_jmethod_id(method_holder(), this_h); } |
0 | 585 |
586 // Lookup the jmethodID for this method. Return NULL if not found. | |
587 // NOTE that this function can be called from a signal handler | |
588 // (see AsyncGetCallTrace support for Forte Analyzer) and this | |
589 // needs to be async-safe. No allocation should be done and | |
590 // so handles are not used to avoid deadlock. | |
591 jmethodID find_jmethod_id_or_null() { return instanceKlass::cast(method_holder())->jmethod_id_or_null(this); } | |
592 | |
593 // JNI static invoke cached itable index accessors | |
594 int cached_itable_index() { return instanceKlass::cast(method_holder())->cached_itable_index(method_idnum()); } | |
595 void set_cached_itable_index(int index) { instanceKlass::cast(method_holder())->set_cached_itable_index(method_idnum(), index); } | |
596 | |
597 // Support for inlining of intrinsic methods | |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
598 vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; } |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
599 void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; } |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
600 |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
601 // Helper routines for intrinsic_id() and vmIntrinsics::method(). |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
602 void init_intrinsic_id(); // updates from _none if a match |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
603 static vmSymbols::SID klass_id_for_intrinsics(klassOop holder); |
0 | 604 |
605 // On-stack replacement support | |
1783 | 606 bool has_osr_nmethod(int level, bool match_level) { |
607 return instanceKlass::cast(method_holder())->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL; | |
608 } | |
609 | |
610 nmethod* lookup_osr_nmethod_for(int bci, int level, bool match_level) { | |
611 return instanceKlass::cast(method_holder())->lookup_osr_nmethod(this, bci, level, match_level); | |
612 } | |
0 | 613 |
614 // Inline cache support | |
615 void cleanup_inline_caches(); | |
616 | |
617 // Find if klass for method is loaded | |
618 bool is_klass_loaded_by_klass_index(int klass_index) const; | |
619 bool is_klass_loaded(int refinfo_index, bool must_be_resolved = false) const; | |
620 | |
621 // Indicates whether compilation failed earlier for this method, or | |
622 // whether it is not compilable for another reason like having a | |
623 // breakpoint set in it. | |
1783 | 624 bool is_not_compilable(int comp_level = CompLevel_any) const; |
625 void set_not_compilable(int comp_level = CompLevel_all, bool report = true); | |
626 void set_not_compilable_quietly(int comp_level = CompLevel_all) { | |
1208
cef333a48af6
6923043: failed nightly tests which use -XX:+PrintCompilation -Xcomp -XX:CompileOnly
kvn
parents:
1202
diff
changeset
|
627 set_not_compilable(comp_level, false); |
cef333a48af6
6923043: failed nightly tests which use -XX:+PrintCompilation -Xcomp -XX:CompileOnly
kvn
parents:
1202
diff
changeset
|
628 } |
1783 | 629 bool is_not_osr_compilable(int comp_level = CompLevel_any) const { |
630 return is_not_compilable(comp_level) || access_flags().is_not_osr_compilable(); | |
631 } | |
632 void set_not_osr_compilable() { _access_flags.set_not_osr_compilable(); } | |
633 bool is_not_c1_compilable() const { return access_flags().is_not_c1_compilable(); } | |
634 void set_not_c1_compilable() { _access_flags.set_not_c1_compilable(); } | |
635 bool is_not_c2_compilable() const { return access_flags().is_not_c2_compilable(); } | |
636 void set_not_c2_compilable() { _access_flags.set_not_c2_compilable(); } | |
0 | 637 |
638 // Background compilation support | |
1783 | 639 bool queued_for_compilation() const { return access_flags().queued_for_compilation(); } |
640 void set_queued_for_compilation() { _access_flags.set_queued_for_compilation(); } | |
641 void clear_queued_for_compilation() { _access_flags.clear_queued_for_compilation(); } | |
0 | 642 |
643 static methodOop method_from_bcp(address bcp); | |
644 | |
645 // Resolve all classes in signature, return 'true' if successful | |
646 static bool load_signature_classes(methodHandle m, TRAPS); | |
647 | |
648 // Return if true if not all classes references in signature, including return type, has been loaded | |
649 static bool has_unloaded_classes_in_signature(methodHandle m, TRAPS); | |
650 | |
651 // Printing | |
652 void print_short_name(outputStream* st) /*PRODUCT_RETURN*/; // prints as klassname::methodname; Exposed so field engineers can debug VM | |
653 void print_name(outputStream* st) PRODUCT_RETURN; // prints as "virtual void foo(int)" | |
654 | |
655 // Helper routine used for method sorting | |
656 static void sort_methods(objArrayOop methods, | |
657 objArrayOop methods_annotations, | |
658 objArrayOop methods_parameter_annotations, | |
659 objArrayOop methods_default_annotations, | |
660 bool idempotent = false); | |
661 | |
662 // size of parameters | |
663 void set_size_of_parameters(int size) { _size_of_parameters = size; } | |
664 private: | |
665 | |
666 // Inlined elements | |
667 address* native_function_addr() const { assert(is_native(), "must be native"); return (address*) (this+1); } | |
668 address* signature_handler_addr() const { return native_function_addr() + 1; } | |
669 | |
670 // Garbage collection support | |
671 oop* adr_constMethod() const { return (oop*)&_constMethod; } | |
672 oop* adr_constants() const { return (oop*)&_constants; } | |
673 oop* adr_method_data() const { return (oop*)&_method_data; } | |
674 }; | |
675 | |
676 | |
677 // Utility class for compressing line number tables | |
678 | |
679 class CompressedLineNumberWriteStream: public CompressedWriteStream { | |
680 private: | |
681 int _bci; | |
682 int _line; | |
683 public: | |
684 // Constructor | |
685 CompressedLineNumberWriteStream(int initial_size) : CompressedWriteStream(initial_size), _bci(0), _line(0) {} | |
686 CompressedLineNumberWriteStream(u_char* buffer, int initial_size) : CompressedWriteStream(buffer, initial_size), _bci(0), _line(0) {} | |
687 | |
688 // Write (bci, line number) pair to stream | |
689 void write_pair_regular(int bci_delta, int line_delta); | |
690 | |
691 inline void write_pair_inline(int bci, int line) { | |
692 int bci_delta = bci - _bci; | |
693 int line_delta = line - _line; | |
694 _bci = bci; | |
695 _line = line; | |
696 // Skip (0,0) deltas - they do not add information and conflict with terminator. | |
697 if (bci_delta == 0 && line_delta == 0) return; | |
698 // Check if bci is 5-bit and line number 3-bit unsigned. | |
699 if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) { | |
700 // Compress into single byte. | |
701 jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta; | |
702 // Check that value doesn't match escape character. | |
703 if (value != 0xFF) { | |
704 write_byte(value); | |
705 return; | |
706 } | |
707 } | |
708 write_pair_regular(bci_delta, line_delta); | |
709 } | |
710 | |
711 // Windows AMD64 + Apr 2005 PSDK with /O2 generates bad code for write_pair. | |
712 // Disabling optimization doesn't work for methods in header files | |
713 // so we force it to call through the non-optimized version in the .cpp. | |
714 // It's gross, but it's the only way we can ensure that all callers are | |
715 // fixed. MSC_VER is defined in build/windows/makefiles/compile.make. | |
716 #if defined(_M_AMD64) && MSC_VER >= 1400 | |
717 void write_pair(int bci, int line); | |
718 #else | |
719 void write_pair(int bci, int line) { write_pair_inline(bci, line); } | |
720 #endif | |
721 | |
722 // Write end-of-stream marker | |
723 void write_terminator() { write_byte(0); } | |
724 }; | |
725 | |
726 | |
727 // Utility class for decompressing line number tables | |
728 | |
729 class CompressedLineNumberReadStream: public CompressedReadStream { | |
730 private: | |
731 int _bci; | |
732 int _line; | |
733 public: | |
734 // Constructor | |
735 CompressedLineNumberReadStream(u_char* buffer); | |
736 // Read (bci, line number) pair from stream. Returns false at end-of-stream. | |
737 bool read_pair(); | |
738 // Accessing bci and line number (after calling read_pair) | |
739 int bci() const { return _bci; } | |
740 int line() const { return _line; } | |
741 }; | |
742 | |
743 | |
744 /// Fast Breakpoints. | |
745 | |
746 // If this structure gets more complicated (because bpts get numerous), | |
747 // move it into its own header. | |
748 | |
749 // There is presently no provision for concurrent access | |
750 // to breakpoint lists, which is only OK for JVMTI because | |
751 // breakpoints are written only at safepoints, and are read | |
752 // concurrently only outside of safepoints. | |
753 | |
754 class BreakpointInfo : public CHeapObj { | |
755 friend class VMStructs; | |
756 private: | |
757 Bytecodes::Code _orig_bytecode; | |
758 int _bci; | |
759 u2 _name_index; // of method | |
760 u2 _signature_index; // of method | |
761 BreakpointInfo* _next; // simple storage allocation | |
762 | |
763 public: | |
764 BreakpointInfo(methodOop m, int bci); | |
765 | |
766 // accessors | |
767 Bytecodes::Code orig_bytecode() { return _orig_bytecode; } | |
768 void set_orig_bytecode(Bytecodes::Code code) { _orig_bytecode = code; } | |
769 int bci() { return _bci; } | |
770 | |
771 BreakpointInfo* next() const { return _next; } | |
772 void set_next(BreakpointInfo* n) { _next = n; } | |
773 | |
774 // helps for searchers | |
775 bool match(methodOop m, int bci) { | |
776 return bci == _bci && match(m); | |
777 } | |
778 | |
779 bool match(methodOop m) { | |
780 return _name_index == m->name_index() && | |
781 _signature_index == m->signature_index(); | |
782 } | |
783 | |
784 void set(methodOop method); | |
785 void clear(methodOop method); | |
786 }; |