Mercurial > hg > graal-compiler
annotate src/share/vm/oops/methodOop.hpp @ 2334:dbad0519a1c4
6845426: non-static <clinit> method with no args is called during the class initialization process
Summary: Only call <clinit> with ACC_STATIC for classfiles with version > 50
Reviewed-by: acorn, dholmes, coleenp
author | kamg |
---|---|
date | Fri, 04 Mar 2011 14:40:46 -0500 |
parents | f77b3ec064b0 |
children | 799d8ccf63cf |
rev | line source |
---|---|
0 | 1 /* |
2142 | 2 * Copyright (c) 1997, 2011, 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 | |
1972 | 25 #ifndef SHARE_VM_OOPS_METHODOOP_HPP |
26 #define SHARE_VM_OOPS_METHODOOP_HPP | |
27 | |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "code/compressedStream.hpp" | |
30 #include "compiler/oopMap.hpp" | |
31 #include "interpreter/invocationCounter.hpp" | |
32 #include "oops/constMethodOop.hpp" | |
33 #include "oops/constantPoolOop.hpp" | |
34 #include "oops/instanceKlass.hpp" | |
35 #include "oops/oop.hpp" | |
36 #include "oops/typeArrayOop.hpp" | |
37 #include "utilities/accessFlags.hpp" | |
38 #include "utilities/growableArray.hpp" | |
39 | |
0 | 40 // A methodOop represents a Java method. |
41 // | |
42 // Memory layout (each line represents a word). Note that most applications load thousands of methods, | |
43 // so keeping the size of this structure small has a big impact on footprint. | |
44 // | |
45 // We put all oops and method_size first for better gc cache locality. | |
46 // | |
47 // The actual bytecodes are inlined after the end of the methodOopDesc struct. | |
48 // | |
49 // There are bits in the access_flags telling whether inlined tables are present. | |
50 // Note that accessing the line number and local variable tables is not performance critical at all. | |
51 // Accessing the checked exceptions table is used by reflection, so we put that last to make access | |
52 // to it fast. | |
53 // | |
54 // The line number table is compressed and inlined following the byte codes. It is found as the first | |
55 // byte following the byte codes. The checked exceptions table and the local variable table are inlined | |
56 // after the line number table, and indexed from the end of the method. We do not compress the checked | |
57 // exceptions table since the average length is less than 2, and do not bother to compress the local | |
58 // variable table either since it is mostly absent. | |
59 // | |
60 // Note that native_function and signature_handler has to be at fixed offsets (required by the interpreter) | |
61 // | |
62 // |------------------------------------------------------| | |
63 // | header | | |
64 // | klass | | |
65 // |------------------------------------------------------| | |
66 // | constMethodOop (oop) | | |
67 // | constants (oop) | | |
68 // |------------------------------------------------------| | |
69 // | methodData (oop) | | |
70 // | interp_invocation_count | | |
71 // |------------------------------------------------------| | |
72 // | access_flags | | |
73 // | vtable_index | | |
74 // |------------------------------------------------------| | |
75 // | result_index (C++ interpreter only) | | |
76 // |------------------------------------------------------| | |
77 // | method_size | max_stack | | |
78 // | max_locals | size_of_parameters | | |
79 // |------------------------------------------------------| | |
1783 | 80 // | intrinsic_id, (unused) | throwout_count | |
0 | 81 // |------------------------------------------------------| |
1783 | 82 // | num_breakpoints | (unused) | |
0 | 83 // |------------------------------------------------------| |
84 // | invocation_counter | | |
85 // | backedge_counter | | |
86 // |------------------------------------------------------| | |
87 // | code (pointer) | | |
88 // | i2i (pointer) | | |
89 // | adapter (pointer) | | |
90 // | from_compiled_entry (pointer) | | |
91 // | from_interpreted_entry (pointer) | | |
92 // |------------------------------------------------------| | |
93 // | native_function (present only if native) | | |
94 // | signature_handler (present only if native) | | |
95 // |------------------------------------------------------| | |
96 | |
97 | |
98 class CheckedExceptionElement; | |
99 class LocalVariableTableElement; | |
100 class AdapterHandlerEntry; | |
101 class methodDataOopDesc; | |
102 | |
103 class methodOopDesc : public oopDesc { | |
104 friend class methodKlass; | |
105 friend class VMStructs; | |
106 private: | |
107 constMethodOop _constMethod; // Method read-only data. | |
108 constantPoolOop _constants; // Constant pool | |
109 methodDataOop _method_data; | |
1783 | 110 int _interpreter_invocation_count; // Count of times invoked (reused as prev_event_count in tiered) |
0 | 111 AccessFlags _access_flags; // Access flags |
112 int _vtable_index; // vtable index of this method (see VtableIndexFlag) | |
113 // note: can have vtables with >2**16 elements (because of inheritance) | |
114 #ifdef CC_INTERP | |
115 int _result_index; // C++ interpreter needs for converting results to/from stack | |
116 #endif | |
117 u2 _method_size; // size of this object | |
118 u2 _max_stack; // Maximum number of entries on the expression stack | |
119 u2 _max_locals; // Number of local variables used by this method | |
120 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
|
121 u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none) |
0 | 122 u2 _interpreter_throwout_count; // Count of times method was exited via exception while interpreting |
123 u2 _number_of_breakpoints; // fullspeed debugging support | |
124 InvocationCounter _invocation_counter; // Incremented before each activation of the method - used to trigger frequency-based optimizations | |
125 InvocationCounter _backedge_counter; // Incremented before each backedge taken - used to trigger frequencey-based optimizations | |
1783 | 126 |
0 | 127 #ifndef PRODUCT |
128 int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging) | |
129 #endif | |
130 // Entry point for calling both from and to the interpreter. | |
131 address _i2i_entry; // All-args-on-stack calling convention | |
132 // Adapter blob (i2c/c2i) for this methodOop. Set once when method is linked. | |
133 AdapterHandlerEntry* _adapter; | |
134 // Entry point for calling from compiled code, to compiled code if it exists | |
135 // or else the interpreter. | |
136 volatile address _from_compiled_entry; // Cache of: _code ? _code->entry_point() : _adapter->c2i_entry() | |
137 // The entry point for calling both from and to compiled code is | |
138 // "_code->entry_point()". Because of tiered compilation and de-opt, this | |
139 // field can come and go. It can transition from NULL to not-null at any | |
140 // time (whenever a compile completes). It can transition from not-null to | |
141 // NULL only at safepoints (because of a de-opt). | |
142 nmethod* volatile _code; // Points to the corresponding piece of native code | |
143 volatile address _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry | |
144 | |
145 public: | |
518
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
196
diff
changeset
|
146 |
0 | 147 // accessors for instance variables |
148 constMethodOop constMethod() const { return _constMethod; } | |
149 void set_constMethod(constMethodOop xconst) { oop_store_without_check((oop*)&_constMethod, (oop)xconst); } | |
150 | |
151 | |
152 static address make_adapters(methodHandle mh, TRAPS); | |
153 volatile address from_compiled_entry() const { return (address)OrderAccess::load_ptr_acquire(&_from_compiled_entry); } | |
154 volatile address from_interpreted_entry() const{ return (address)OrderAccess::load_ptr_acquire(&_from_interpreted_entry); } | |
155 | |
156 // access flag | |
157 AccessFlags access_flags() const { return _access_flags; } | |
158 void set_access_flags(AccessFlags flags) { _access_flags = flags; } | |
159 | |
160 // name | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
161 Symbol* name() const { return _constants->symbol_at(name_index()); } |
0 | 162 int name_index() const { return constMethod()->name_index(); } |
163 void set_name_index(int index) { constMethod()->set_name_index(index); } | |
164 | |
165 // signature | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
166 Symbol* signature() const { return _constants->symbol_at(signature_index()); } |
0 | 167 int signature_index() const { return constMethod()->signature_index(); } |
168 void set_signature_index(int index) { constMethod()->set_signature_index(index); } | |
169 | |
170 // generics support | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
171 Symbol* generic_signature() const { int idx = generic_signature_index(); return ((idx != 0) ? _constants->symbol_at(idx) : (Symbol*)NULL); } |
0 | 172 int generic_signature_index() const { return constMethod()->generic_signature_index(); } |
173 void set_generic_signature_index(int index) { constMethod()->set_generic_signature_index(index); } | |
174 | |
175 // annotations support | |
176 typeArrayOop annotations() const { return instanceKlass::cast(method_holder())->get_method_annotations_of(method_idnum()); } | |
177 typeArrayOop parameter_annotations() const { return instanceKlass::cast(method_holder())->get_method_parameter_annotations_of(method_idnum()); } | |
178 typeArrayOop annotation_default() const { return instanceKlass::cast(method_holder())->get_method_default_annotations_of(method_idnum()); } | |
179 | |
180 #ifdef CC_INTERP | |
181 void set_result_index(BasicType type); | |
182 int result_index() { return _result_index; } | |
183 #endif | |
184 | |
185 // Helper routine: get klass name + "." + method name + signature as | |
186 // C string, for the purpose of providing more useful NoSuchMethodErrors | |
187 // and fatal error handling. The string is allocated in resource | |
188 // area if a buffer is not provided by the caller. | |
189 char* name_and_sig_as_C_string(); | |
190 char* name_and_sig_as_C_string(char* buf, int size); | |
191 | |
192 // Static routine in the situations we don't have a methodOop | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
193 static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
194 static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size); |
0 | 195 |
2142 | 196 Bytecodes::Code java_code_at(int bci) const { |
197 return Bytecodes::java_code_at(this, bcp_from(bci)); | |
198 } | |
199 Bytecodes::Code code_at(int bci) const { | |
200 return Bytecodes::code_at(this, bcp_from(bci)); | |
201 } | |
202 | |
0 | 203 // JVMTI breakpoints |
2142 | 204 Bytecodes::Code orig_bytecode_at(int bci) const; |
0 | 205 void set_orig_bytecode_at(int bci, Bytecodes::Code code); |
206 void set_breakpoint(int bci); | |
207 void clear_breakpoint(int bci); | |
208 void clear_all_breakpoints(); | |
209 // Tracking number of breakpoints, for fullspeed debugging. | |
210 // Only mutated by VM thread. | |
211 u2 number_of_breakpoints() const { return _number_of_breakpoints; } | |
212 void incr_number_of_breakpoints() { ++_number_of_breakpoints; } | |
213 void decr_number_of_breakpoints() { --_number_of_breakpoints; } | |
214 // Initialization only | |
215 void clear_number_of_breakpoints() { _number_of_breakpoints = 0; } | |
216 | |
217 // index into instanceKlass methods() array | |
218 u2 method_idnum() const { return constMethod()->method_idnum(); } | |
219 void set_method_idnum(u2 idnum) { constMethod()->set_method_idnum(idnum); } | |
220 | |
221 // code size | |
222 int code_size() const { return constMethod()->code_size(); } | |
223 | |
224 // method size | |
225 int method_size() const { return _method_size; } | |
226 void set_method_size(int size) { | |
227 assert(0 <= size && size < (1 << 16), "invalid method size"); | |
228 _method_size = size; | |
229 } | |
230 | |
231 // constant pool for klassOop holding this method | |
232 constantPoolOop constants() const { return _constants; } | |
233 void set_constants(constantPoolOop c) { oop_store_without_check((oop*)&_constants, c); } | |
234 | |
235 // max stack | |
236 int max_stack() const { return _max_stack; } | |
237 void set_max_stack(int size) { _max_stack = size; } | |
238 | |
239 // max locals | |
240 int max_locals() const { return _max_locals; } | |
241 void set_max_locals(int size) { _max_locals = size; } | |
1783 | 242 |
243 int highest_comp_level() const; | |
244 void set_highest_comp_level(int level); | |
245 int highest_osr_comp_level() const; | |
246 void set_highest_osr_comp_level(int level); | |
0 | 247 |
248 // Count of times method was exited via exception while interpreting | |
249 void interpreter_throwout_increment() { | |
250 if (_interpreter_throwout_count < 65534) { | |
251 _interpreter_throwout_count++; | |
252 } | |
253 } | |
254 | |
255 int interpreter_throwout_count() const { return _interpreter_throwout_count; } | |
256 void set_interpreter_throwout_count(int count) { _interpreter_throwout_count = count; } | |
257 | |
258 // size of parameters | |
259 int size_of_parameters() const { return _size_of_parameters; } | |
260 | |
261 bool has_stackmap_table() const { | |
262 return constMethod()->has_stackmap_table(); | |
263 } | |
264 | |
265 typeArrayOop stackmap_data() const { | |
266 return constMethod()->stackmap_data(); | |
267 } | |
268 | |
1877
a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
kamg
parents:
1793
diff
changeset
|
269 void set_stackmap_data(typeArrayOop sd) { |
a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
kamg
parents:
1793
diff
changeset
|
270 constMethod()->set_stackmap_data(sd); |
a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
kamg
parents:
1793
diff
changeset
|
271 } |
a4c7fe54bf3f
6991315: RedefineClasses fails with java.lang.VerifyError
kamg
parents:
1793
diff
changeset
|
272 |
0 | 273 // exception handler table |
274 typeArrayOop exception_table() const | |
275 { return constMethod()->exception_table(); } | |
276 void set_exception_table(typeArrayOop e) | |
277 { constMethod()->set_exception_table(e); } | |
278 bool has_exception_handler() const | |
279 { return constMethod()->has_exception_handler(); } | |
280 | |
281 // Finds the first entry point bci of an exception handler for an | |
282 // exception of klass ex_klass thrown at throw_bci. A value of NULL | |
283 // for ex_klass indicates that the exception klass is not known; in | |
284 // this case it matches any constraint class. Returns -1 if the | |
285 // exception cannot be handled in this method. The handler | |
286 // constraint classes are loaded if necessary. Note that this may | |
287 // throw an exception if loading of the constraint classes causes | |
288 // an IllegalAccessError (bugid 4307310) or an OutOfMemoryError. | |
289 // If an exception is thrown, returns the bci of the | |
290 // exception handler which caused the exception to be thrown, which | |
291 // is needed for proper retries. See, for example, | |
292 // InterpreterRuntime::exception_handler_for_exception. | |
293 int fast_exception_handler_bci_for(KlassHandle ex_klass, int throw_bci, TRAPS); | |
294 | |
295 // method data access | |
296 methodDataOop method_data() const { | |
297 return _method_data; | |
298 } | |
299 void set_method_data(methodDataOop data) { | |
300 oop_store_without_check((oop*)&_method_data, (oop)data); | |
301 } | |
302 | |
303 // invocation counter | |
1783 | 304 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
305 InvocationCounter* backedge_counter() { return &_backedge_counter; } | |
306 | |
307 int invocation_count(); | |
308 int backedge_count(); | |
309 | |
310 bool was_executed_more_than(int n); | |
311 bool was_never_executed() { return !was_executed_more_than(0); } | |
0 | 312 |
313 static void build_interpreter_method_data(methodHandle method, TRAPS); | |
314 | |
1783 | 315 int interpreter_invocation_count() { |
316 if (TieredCompilation) return invocation_count(); | |
317 else return _interpreter_invocation_count; | |
318 } | |
0 | 319 void set_interpreter_invocation_count(int count) { _interpreter_invocation_count = count; } |
1783 | 320 int increment_interpreter_invocation_count() { |
321 if (TieredCompilation) ShouldNotReachHere(); | |
322 return ++_interpreter_invocation_count; | |
323 } | |
0 | 324 |
325 #ifndef PRODUCT | |
1783 | 326 int compiled_invocation_count() const { return _compiled_invocation_count; } |
0 | 327 void set_compiled_invocation_count(int count) { _compiled_invocation_count = count; } |
328 #endif // not PRODUCT | |
329 | |
605 | 330 // Clear (non-shared space) pointers which could not be relevant |
0 | 331 // if this (shared) method were mapped into another JVM. |
332 void remove_unshareable_info(); | |
333 | |
334 // nmethod/verified compiler entry | |
335 address verified_code_entry(); | |
336 bool check_code() const; // Not inline to avoid circular ref | |
337 nmethod* volatile code() const { assert( check_code(), "" ); return (nmethod *)OrderAccess::load_ptr_acquire(&_code); } | |
338 void clear_code(); // Clear out any compiled code | |
1202 | 339 static void set_code(methodHandle mh, nmethod* code); |
0 | 340 void set_adapter_entry(AdapterHandlerEntry* adapter) { _adapter = adapter; } |
341 address get_i2c_entry(); | |
342 address get_c2i_entry(); | |
343 address get_c2i_unverified_entry(); | |
344 AdapterHandlerEntry* adapter() { return _adapter; } | |
345 // setup entry points | |
346 void link_method(methodHandle method, TRAPS); | |
347 // clear entry points. Used by sharing code | |
348 void unlink_method(); | |
349 | |
350 // vtable index | |
351 enum VtableIndexFlag { | |
352 // Valid vtable indexes are non-negative (>= 0). | |
353 // These few negative values are used as sentinels. | |
710 | 354 highest_unused_vtable_index_value = -5, |
0 | 355 invalid_vtable_index = -4, // distinct from any valid vtable index |
356 garbage_vtable_index = -3, // not yet linked; no vtable layout yet | |
357 nonvirtual_vtable_index = -2 // there is no need for vtable dispatch | |
358 // 6330203 Note: Do not use -1, which was overloaded with many meanings. | |
359 }; | |
360 DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; }) | |
361 int vtable_index() const { assert(valid_vtable_index(), ""); | |
362 return _vtable_index; } | |
363 void set_vtable_index(int index) { _vtable_index = index; } | |
364 | |
365 // interpreter entry | |
366 address interpreter_entry() const { return _i2i_entry; } | |
367 // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry | |
368 void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; } | |
369 int interpreter_kind(void) { | |
370 return constMethod()->interpreter_kind(); | |
371 } | |
372 void set_interpreter_kind(); | |
373 void set_interpreter_kind(int kind) { | |
374 constMethod()->set_interpreter_kind(kind); | |
375 } | |
376 | |
377 // native function (used for native methods only) | |
378 enum { | |
379 native_bind_event_is_interesting = true | |
380 }; | |
381 address native_function() const { return *(native_function_addr()); } | |
382 // Must specify a real function (not NULL). | |
383 // Use clear_native_function() to unregister. | |
384 void set_native_function(address function, bool post_event_flag); | |
385 bool has_native_function() const; | |
386 void clear_native_function(); | |
387 | |
388 // signature handler (used for native methods only) | |
389 address signature_handler() const { return *(signature_handler_addr()); } | |
390 void set_signature_handler(address handler); | |
391 | |
392 // Interpreter oopmap support | |
393 void mask_for(int bci, InterpreterOopMap* mask); | |
394 | |
395 #ifndef PRODUCT | |
396 // operations on invocation counter | |
1783 | 397 void print_invocation_count(); |
0 | 398 #endif |
399 | |
400 // byte codes | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
977
diff
changeset
|
401 void set_code(address code) { return constMethod()->set_code(code); } |
0 | 402 address code_base() const { return constMethod()->code_base(); } |
403 bool contains(address bcp) const { return constMethod()->contains(bcp); } | |
404 | |
405 // prints byte codes | |
406 void print_codes() const { print_codes_on(tty); } | |
407 void print_codes_on(outputStream* st) const PRODUCT_RETURN; | |
408 void print_codes_on(int from, int to, outputStream* st) const PRODUCT_RETURN; | |
409 | |
410 // checked exceptions | |
411 int checked_exceptions_length() const | |
412 { return constMethod()->checked_exceptions_length(); } | |
413 CheckedExceptionElement* checked_exceptions_start() const | |
414 { return constMethod()->checked_exceptions_start(); } | |
415 | |
416 // localvariable table | |
417 bool has_localvariable_table() const | |
418 { return constMethod()->has_localvariable_table(); } | |
419 int localvariable_table_length() const | |
420 { return constMethod()->localvariable_table_length(); } | |
421 LocalVariableTableElement* localvariable_table_start() const | |
422 { return constMethod()->localvariable_table_start(); } | |
423 | |
424 bool has_linenumber_table() const | |
425 { return constMethod()->has_linenumber_table(); } | |
426 u_char* compressed_linenumber_table() const | |
427 { return constMethod()->compressed_linenumber_table(); } | |
428 | |
429 // method holder (the klassOop holding this method) | |
430 klassOop method_holder() const { return _constants->pool_holder(); } | |
431 | |
432 void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments) | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
433 Symbol* klass_name() const; // returns the name of the method holder |
0 | 434 BasicType result_type() const; // type of the method result |
435 int result_type_index() const; // type index of the method result | |
436 bool is_returning_oop() const { BasicType r = result_type(); return (r == T_OBJECT || r == T_ARRAY); } | |
437 bool is_returning_fp() const { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); } | |
438 | |
439 // Checked exceptions thrown by this method (resolved to mirrors) | |
440 objArrayHandle resolved_checked_exceptions(TRAPS) { return resolved_checked_exceptions_impl(this, THREAD); } | |
441 | |
442 // Access flags | |
443 bool is_public() const { return access_flags().is_public(); } | |
444 bool is_private() const { return access_flags().is_private(); } | |
445 bool is_protected() const { return access_flags().is_protected(); } | |
446 bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } | |
447 bool is_static() const { return access_flags().is_static(); } | |
448 bool is_final() const { return access_flags().is_final(); } | |
449 bool is_synchronized() const { return access_flags().is_synchronized();} | |
450 bool is_native() const { return access_flags().is_native(); } | |
451 bool is_abstract() const { return access_flags().is_abstract(); } | |
452 bool is_strict() const { return access_flags().is_strict(); } | |
453 bool is_synthetic() const { return access_flags().is_synthetic(); } | |
454 | |
455 // returns true if contains only return operation | |
456 bool is_empty_method() const; | |
457 | |
458 // returns true if this is a vanilla constructor | |
459 bool is_vanilla_constructor() const; | |
460 | |
461 // checks method and its method holder | |
462 bool is_final_method() const; | |
463 bool is_strict_method() const; | |
464 | |
465 // true if method needs no dynamic dispatch (final and/or no vtable entry) | |
466 bool can_be_statically_bound() const; | |
467 | |
468 // returns true if the method has any backward branches. | |
469 bool has_loops() { | |
470 return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag(); | |
471 }; | |
472 | |
473 bool compute_has_loops_flag(); | |
474 | |
475 bool has_jsrs() { | |
476 return access_flags().has_jsrs(); | |
477 }; | |
478 void set_has_jsrs() { | |
479 _access_flags.set_has_jsrs(); | |
480 } | |
481 | |
482 // returns true if the method has any monitors. | |
483 bool has_monitors() const { return is_synchronized() || access_flags().has_monitor_bytecodes(); } | |
484 bool has_monitor_bytecodes() const { return access_flags().has_monitor_bytecodes(); } | |
485 | |
486 void set_has_monitor_bytecodes() { _access_flags.set_has_monitor_bytecodes(); } | |
487 | |
488 // monitor matching. This returns a conservative estimate of whether the monitorenter/monitorexit bytecodes | |
489 // propererly nest in the method. It might return false, even though they actually nest properly, since the info. | |
490 // has not been computed yet. | |
491 bool guaranteed_monitor_matching() const { return access_flags().is_monitor_matching(); } | |
492 void set_guaranteed_monitor_matching() { _access_flags.set_monitor_matching(); } | |
493 | |
494 // returns true if the method is an accessor function (setter/getter). | |
495 bool is_accessor() const; | |
496 | |
497 // returns true if the method is an initializer (<init> or <clinit>). | |
498 bool is_initializer() const; | |
499 | |
2334
dbad0519a1c4
6845426: non-static <clinit> method with no args is called during the class initialization process
kamg
parents:
2243
diff
changeset
|
500 // returns true if the method is static OR if the classfile version < 51 |
dbad0519a1c4
6845426: non-static <clinit> method with no args is called during the class initialization process
kamg
parents:
2243
diff
changeset
|
501 bool has_valid_initializer_flags() const; |
dbad0519a1c4
6845426: non-static <clinit> method with no args is called during the class initialization process
kamg
parents:
2243
diff
changeset
|
502 |
dbad0519a1c4
6845426: non-static <clinit> method with no args is called during the class initialization process
kamg
parents:
2243
diff
changeset
|
503 // returns true if the method name is <clinit> and the method has |
dbad0519a1c4
6845426: non-static <clinit> method with no args is called during the class initialization process
kamg
parents:
2243
diff
changeset
|
504 // valid static initializer flags. |
dbad0519a1c4
6845426: non-static <clinit> method with no args is called during the class initialization process
kamg
parents:
2243
diff
changeset
|
505 bool is_static_initializer() const; |
dbad0519a1c4
6845426: non-static <clinit> method with no args is called during the class initialization process
kamg
parents:
2243
diff
changeset
|
506 |
0 | 507 // compiled code support |
508 // NOTE: code() is inherently racy as deopt can be clearing code | |
509 // simultaneously. Use with caution. | |
510 bool has_compiled_code() const { return code() != NULL; } | |
511 | |
512 // sizing | |
513 static int object_size(bool is_native); | |
514 static int header_size() { return sizeof(methodOopDesc)/HeapWordSize; } | |
515 int object_size() const { return method_size(); } | |
516 | |
517 bool object_is_parsable() const { return method_size() > 0; } | |
518 | |
519 // interpreter support | |
520 static ByteSize const_offset() { return byte_offset_of(methodOopDesc, _constMethod ); } | |
521 static ByteSize constants_offset() { return byte_offset_of(methodOopDesc, _constants ); } | |
522 static ByteSize access_flags_offset() { return byte_offset_of(methodOopDesc, _access_flags ); } | |
523 #ifdef CC_INTERP | |
524 static ByteSize result_index_offset() { return byte_offset_of(methodOopDesc, _result_index ); } | |
525 #endif /* CC_INTERP */ | |
526 static ByteSize size_of_locals_offset() { return byte_offset_of(methodOopDesc, _max_locals ); } | |
527 static ByteSize size_of_parameters_offset() { return byte_offset_of(methodOopDesc, _size_of_parameters); } | |
528 static ByteSize from_compiled_offset() { return byte_offset_of(methodOopDesc, _from_compiled_entry); } | |
529 static ByteSize code_offset() { return byte_offset_of(methodOopDesc, _code); } | |
530 static ByteSize invocation_counter_offset() { return byte_offset_of(methodOopDesc, _invocation_counter); } | |
531 static ByteSize backedge_counter_offset() { return byte_offset_of(methodOopDesc, _backedge_counter); } | |
532 static ByteSize method_data_offset() { | |
533 return byte_offset_of(methodOopDesc, _method_data); | |
534 } | |
535 static ByteSize interpreter_invocation_counter_offset() { return byte_offset_of(methodOopDesc, _interpreter_invocation_count); } | |
536 #ifndef PRODUCT | |
537 static ByteSize compiled_invocation_counter_offset() { return byte_offset_of(methodOopDesc, _compiled_invocation_count); } | |
538 #endif // not PRODUCT | |
539 static ByteSize native_function_offset() { return in_ByteSize(sizeof(methodOopDesc)); } | |
540 static ByteSize from_interpreted_offset() { return byte_offset_of(methodOopDesc, _from_interpreted_entry ); } | |
541 static ByteSize interpreter_entry_offset() { return byte_offset_of(methodOopDesc, _i2i_entry ); } | |
542 static ByteSize signature_handler_offset() { return in_ByteSize(sizeof(methodOopDesc) + wordSize); } | |
543 static ByteSize max_stack_offset() { return byte_offset_of(methodOopDesc, _max_stack ); } | |
544 | |
545 // for code generation | |
546 static int method_data_offset_in_bytes() { return offset_of(methodOopDesc, _method_data); } | |
547 static int interpreter_invocation_counter_offset_in_bytes() | |
548 { 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
|
549 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
|
550 static int intrinsic_id_size_in_bytes() { return sizeof(u1); } |
0 | 551 |
552 // Static methods that are used to implement member methods where an exposed this pointer | |
553 // is needed due to possible GCs | |
554 static objArrayHandle resolved_checked_exceptions_impl(methodOop this_oop, TRAPS); | |
555 | |
556 // Returns the byte code index from the byte code pointer | |
557 int bci_from(address bcp) const; | |
558 address bcp_from(int bci) const; | |
559 int validate_bci_from_bcx(intptr_t bcx) const; | |
560 | |
561 // Returns the line number for a bci if debugging information for the method is prowided, | |
562 // -1 is returned otherwise. | |
563 int line_number_from_bci(int bci) const; | |
564 | |
565 // Reflection support | |
566 bool is_overridden_in(klassOop k) const; | |
567 | |
710 | 568 // JSR 292 support |
569 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
|
570 static bool is_method_handle_invoke_name(vmSymbols::SID name_sid); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
571 static bool is_method_handle_invoke_name(Symbol* name) { |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1208
diff
changeset
|
572 return is_method_handle_invoke_name(vmSymbols::find_sid(name)); |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1208
diff
changeset
|
573 } |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1138
diff
changeset
|
574 // 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
|
575 // MethodHandleCompiler. |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1138
diff
changeset
|
576 bool is_method_handle_adapter() const; |
710 | 577 static methodHandle make_invoke_method(KlassHandle holder, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
578 Symbol* name, //invokeExact or invokeGeneric |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
579 Symbol* signature, //anything at all |
710 | 580 Handle method_type, |
581 TRAPS); | |
582 // these operate only on invoke methods: | |
583 oop method_handle_type() const; | |
584 static jint* method_type_offsets_chain(); // series of pointer-offsets, terminated by -1 | |
585 // 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
|
586 // 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
|
587 // 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
|
588 // all without checking for a stack overflow |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
589 static int extra_stack_entries() { return (EnableMethodHandles ? (int)MethodHandlePushLimit : 0) + (EnableInvokeDynamic ? 3 : 0); } |
710 | 590 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
|
591 |
0 | 592 // RedefineClasses() support: |
593 bool is_old() const { return access_flags().is_old(); } | |
594 void set_is_old() { _access_flags.set_is_old(); } | |
595 bool is_obsolete() const { return access_flags().is_obsolete(); } | |
596 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
|
597 // 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
|
598 bool should_not_be_cached() const; |
0 | 599 |
600 // JVMTI Native method prefixing support: | |
601 bool is_prefixed_native() const { return access_flags().is_prefixed_native(); } | |
602 void set_is_prefixed_native() { _access_flags.set_is_prefixed_native(); } | |
603 | |
604 // Rewriting support | |
605 static methodHandle clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length, | |
606 u_char* new_compressed_linenumber_table, int new_compressed_linenumber_size, TRAPS); | |
607 | |
608 // Get this method's jmethodID -- allocate if it doesn't exist | |
609 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
|
610 return instanceKlass::get_jmethod_id(method_holder(), this_h); } |
0 | 611 |
612 // Lookup the jmethodID for this method. Return NULL if not found. | |
613 // NOTE that this function can be called from a signal handler | |
614 // (see AsyncGetCallTrace support for Forte Analyzer) and this | |
615 // needs to be async-safe. No allocation should be done and | |
616 // so handles are not used to avoid deadlock. | |
617 jmethodID find_jmethod_id_or_null() { return instanceKlass::cast(method_holder())->jmethod_id_or_null(this); } | |
618 | |
619 // JNI static invoke cached itable index accessors | |
620 int cached_itable_index() { return instanceKlass::cast(method_holder())->cached_itable_index(method_idnum()); } | |
621 void set_cached_itable_index(int index) { instanceKlass::cast(method_holder())->set_cached_itable_index(method_idnum(), index); } | |
622 | |
623 // Support for inlining of intrinsic methods | |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
624 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
|
625 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
|
626 |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
726
diff
changeset
|
627 // 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
|
628 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
|
629 static vmSymbols::SID klass_id_for_intrinsics(klassOop holder); |
0 | 630 |
631 // On-stack replacement support | |
1783 | 632 bool has_osr_nmethod(int level, bool match_level) { |
633 return instanceKlass::cast(method_holder())->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL; | |
634 } | |
635 | |
636 nmethod* lookup_osr_nmethod_for(int bci, int level, bool match_level) { | |
637 return instanceKlass::cast(method_holder())->lookup_osr_nmethod(this, bci, level, match_level); | |
638 } | |
0 | 639 |
640 // Inline cache support | |
641 void cleanup_inline_caches(); | |
642 | |
643 // Find if klass for method is loaded | |
644 bool is_klass_loaded_by_klass_index(int klass_index) const; | |
645 bool is_klass_loaded(int refinfo_index, bool must_be_resolved = false) const; | |
646 | |
647 // Indicates whether compilation failed earlier for this method, or | |
648 // whether it is not compilable for another reason like having a | |
649 // breakpoint set in it. | |
1783 | 650 bool is_not_compilable(int comp_level = CompLevel_any) const; |
651 void set_not_compilable(int comp_level = CompLevel_all, bool report = true); | |
652 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
|
653 set_not_compilable(comp_level, false); |
cef333a48af6
6923043: failed nightly tests which use -XX:+PrintCompilation -Xcomp -XX:CompileOnly
kvn
parents:
1202
diff
changeset
|
654 } |
1783 | 655 bool is_not_osr_compilable(int comp_level = CompLevel_any) const { |
656 return is_not_compilable(comp_level) || access_flags().is_not_osr_compilable(); | |
657 } | |
658 void set_not_osr_compilable() { _access_flags.set_not_osr_compilable(); } | |
659 bool is_not_c1_compilable() const { return access_flags().is_not_c1_compilable(); } | |
660 void set_not_c1_compilable() { _access_flags.set_not_c1_compilable(); } | |
661 bool is_not_c2_compilable() const { return access_flags().is_not_c2_compilable(); } | |
662 void set_not_c2_compilable() { _access_flags.set_not_c2_compilable(); } | |
0 | 663 |
664 // Background compilation support | |
1783 | 665 bool queued_for_compilation() const { return access_flags().queued_for_compilation(); } |
666 void set_queued_for_compilation() { _access_flags.set_queued_for_compilation(); } | |
667 void clear_queued_for_compilation() { _access_flags.clear_queued_for_compilation(); } | |
0 | 668 |
669 // Resolve all classes in signature, return 'true' if successful | |
670 static bool load_signature_classes(methodHandle m, TRAPS); | |
671 | |
672 // Return if true if not all classes references in signature, including return type, has been loaded | |
673 static bool has_unloaded_classes_in_signature(methodHandle m, TRAPS); | |
674 | |
675 // Printing | |
676 void print_short_name(outputStream* st) /*PRODUCT_RETURN*/; // prints as klassname::methodname; Exposed so field engineers can debug VM | |
677 void print_name(outputStream* st) PRODUCT_RETURN; // prints as "virtual void foo(int)" | |
678 | |
679 // Helper routine used for method sorting | |
680 static void sort_methods(objArrayOop methods, | |
681 objArrayOop methods_annotations, | |
682 objArrayOop methods_parameter_annotations, | |
683 objArrayOop methods_default_annotations, | |
684 bool idempotent = false); | |
685 | |
686 // size of parameters | |
687 void set_size_of_parameters(int size) { _size_of_parameters = size; } | |
688 private: | |
689 | |
690 // Inlined elements | |
691 address* native_function_addr() const { assert(is_native(), "must be native"); return (address*) (this+1); } | |
692 address* signature_handler_addr() const { return native_function_addr() + 1; } | |
693 | |
694 // Garbage collection support | |
695 oop* adr_constMethod() const { return (oop*)&_constMethod; } | |
696 oop* adr_constants() const { return (oop*)&_constants; } | |
697 oop* adr_method_data() const { return (oop*)&_method_data; } | |
698 }; | |
699 | |
700 | |
701 // Utility class for compressing line number tables | |
702 | |
703 class CompressedLineNumberWriteStream: public CompressedWriteStream { | |
704 private: | |
705 int _bci; | |
706 int _line; | |
707 public: | |
708 // Constructor | |
709 CompressedLineNumberWriteStream(int initial_size) : CompressedWriteStream(initial_size), _bci(0), _line(0) {} | |
710 CompressedLineNumberWriteStream(u_char* buffer, int initial_size) : CompressedWriteStream(buffer, initial_size), _bci(0), _line(0) {} | |
711 | |
712 // Write (bci, line number) pair to stream | |
713 void write_pair_regular(int bci_delta, int line_delta); | |
714 | |
715 inline void write_pair_inline(int bci, int line) { | |
716 int bci_delta = bci - _bci; | |
717 int line_delta = line - _line; | |
718 _bci = bci; | |
719 _line = line; | |
720 // Skip (0,0) deltas - they do not add information and conflict with terminator. | |
721 if (bci_delta == 0 && line_delta == 0) return; | |
722 // Check if bci is 5-bit and line number 3-bit unsigned. | |
723 if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) { | |
724 // Compress into single byte. | |
725 jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta; | |
726 // Check that value doesn't match escape character. | |
727 if (value != 0xFF) { | |
728 write_byte(value); | |
729 return; | |
730 } | |
731 } | |
732 write_pair_regular(bci_delta, line_delta); | |
733 } | |
734 | |
735 // Windows AMD64 + Apr 2005 PSDK with /O2 generates bad code for write_pair. | |
736 // Disabling optimization doesn't work for methods in header files | |
737 // so we force it to call through the non-optimized version in the .cpp. | |
738 // It's gross, but it's the only way we can ensure that all callers are | |
2233
15d6977f04b0
7017824: Add support for creating 64-bit Visual Studio projects
sla
parents:
2177
diff
changeset
|
739 // fixed. _MSC_VER is defined by the windows compiler |
15d6977f04b0
7017824: Add support for creating 64-bit Visual Studio projects
sla
parents:
2177
diff
changeset
|
740 #if defined(_M_AMD64) && _MSC_VER >= 1400 |
0 | 741 void write_pair(int bci, int line); |
742 #else | |
743 void write_pair(int bci, int line) { write_pair_inline(bci, line); } | |
744 #endif | |
745 | |
746 // Write end-of-stream marker | |
747 void write_terminator() { write_byte(0); } | |
748 }; | |
749 | |
750 | |
751 // Utility class for decompressing line number tables | |
752 | |
753 class CompressedLineNumberReadStream: public CompressedReadStream { | |
754 private: | |
755 int _bci; | |
756 int _line; | |
757 public: | |
758 // Constructor | |
759 CompressedLineNumberReadStream(u_char* buffer); | |
760 // Read (bci, line number) pair from stream. Returns false at end-of-stream. | |
761 bool read_pair(); | |
762 // Accessing bci and line number (after calling read_pair) | |
763 int bci() const { return _bci; } | |
764 int line() const { return _line; } | |
765 }; | |
766 | |
767 | |
768 /// Fast Breakpoints. | |
769 | |
770 // If this structure gets more complicated (because bpts get numerous), | |
771 // move it into its own header. | |
772 | |
773 // There is presently no provision for concurrent access | |
774 // to breakpoint lists, which is only OK for JVMTI because | |
775 // breakpoints are written only at safepoints, and are read | |
776 // concurrently only outside of safepoints. | |
777 | |
778 class BreakpointInfo : public CHeapObj { | |
779 friend class VMStructs; | |
780 private: | |
781 Bytecodes::Code _orig_bytecode; | |
782 int _bci; | |
783 u2 _name_index; // of method | |
784 u2 _signature_index; // of method | |
785 BreakpointInfo* _next; // simple storage allocation | |
786 | |
787 public: | |
788 BreakpointInfo(methodOop m, int bci); | |
789 | |
790 // accessors | |
791 Bytecodes::Code orig_bytecode() { return _orig_bytecode; } | |
792 void set_orig_bytecode(Bytecodes::Code code) { _orig_bytecode = code; } | |
793 int bci() { return _bci; } | |
794 | |
795 BreakpointInfo* next() const { return _next; } | |
796 void set_next(BreakpointInfo* n) { _next = n; } | |
797 | |
798 // helps for searchers | |
2142 | 799 bool match(const methodOopDesc* m, int bci) { |
0 | 800 return bci == _bci && match(m); |
801 } | |
802 | |
2142 | 803 bool match(const methodOopDesc* m) { |
0 | 804 return _name_index == m->name_index() && |
805 _signature_index == m->signature_index(); | |
806 } | |
807 | |
808 void set(methodOop method); | |
809 void clear(methodOop method); | |
810 }; | |
1972 | 811 |
812 #endif // SHARE_VM_OOPS_METHODOOP_HPP |