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rev 1025 : imported patch indy.compiler.patch
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--- old/src/share/vm/ci/ciEnv.hpp
+++ new/src/share/vm/ci/ciEnv.hpp
1 1 /*
2 2 * Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 21 * have any questions.
22 22 *
23 23 */
24 24
25 25 class CompileTask;
26 26
27 27 // ciEnv
28 28 //
29 29 // This class is the top level broker for requests from the compiler
30 30 // to the VM.
31 31 class ciEnv : StackObj {
32 32 CI_PACKAGE_ACCESS_TO
33 33
34 34 friend class CompileBroker;
35 35 friend class Dependencies; // for get_object, during logging
36 36
37 37 private:
38 38 Arena* _arena; // Alias for _ciEnv_arena except in init_shared_objects()
39 39 Arena _ciEnv_arena;
40 40 int _system_dictionary_modification_counter;
41 41 ciObjectFactory* _factory;
42 42 OopRecorder* _oop_recorder;
43 43 DebugInformationRecorder* _debug_info;
44 44 Dependencies* _dependencies;
45 45 const char* _failure_reason;
46 46 int _compilable;
47 47 bool _break_at_compile;
48 48 int _num_inlined_bytecodes;
49 49 CompileTask* _task; // faster access to CompilerThread::task
50 50 CompileLog* _log; // faster access to CompilerThread::log
51 51 void* _compiler_data; // compiler-specific stuff, if any
52 52
53 53 char* _name_buffer;
54 54 int _name_buffer_len;
55 55
56 56 // Cache Jvmti state
57 57 bool _jvmti_can_hotswap_or_post_breakpoint;
58 58 bool _jvmti_can_examine_or_deopt_anywhere;
59 59 bool _jvmti_can_access_local_variables;
60 60 bool _jvmti_can_post_exceptions;
61 61
62 62 // Cache DTrace flags
63 63 bool _dtrace_extended_probes;
64 64 bool _dtrace_monitor_probes;
65 65 bool _dtrace_method_probes;
66 66 bool _dtrace_alloc_probes;
67 67
68 68 // Distinguished instances of certain ciObjects..
69 69 static ciObject* _null_object_instance;
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70 70 static ciMethodKlass* _method_klass_instance;
71 71 static ciSymbolKlass* _symbol_klass_instance;
72 72 static ciKlassKlass* _klass_klass_instance;
73 73 static ciInstanceKlassKlass* _instance_klass_klass_instance;
74 74 static ciTypeArrayKlassKlass* _type_array_klass_klass_instance;
75 75 static ciObjArrayKlassKlass* _obj_array_klass_klass_instance;
76 76
77 77 static ciInstanceKlass* _ArrayStoreException;
78 78 static ciInstanceKlass* _Class;
79 79 static ciInstanceKlass* _ClassCastException;
80 + static ciInstanceKlass* _InvokeDynamic;
80 81 static ciInstanceKlass* _Object;
81 82 static ciInstanceKlass* _Throwable;
82 83 static ciInstanceKlass* _Thread;
83 84 static ciInstanceKlass* _OutOfMemoryError;
84 85 static ciInstanceKlass* _String;
85 86
86 87 static ciSymbol* _unloaded_cisymbol;
87 88 static ciInstanceKlass* _unloaded_ciinstance_klass;
88 89 static ciObjArrayKlass* _unloaded_ciobjarrayklass;
89 90
90 91 static jobject _ArrayIndexOutOfBoundsException_handle;
91 92 static jobject _ArrayStoreException_handle;
92 93 static jobject _ClassCastException_handle;
93 94
94 95 ciInstance* _NullPointerException_instance;
95 96 ciInstance* _ArithmeticException_instance;
96 97 ciInstance* _ArrayIndexOutOfBoundsException_instance;
97 98 ciInstance* _ArrayStoreException_instance;
98 99 ciInstance* _ClassCastException_instance;
99 100
100 101 // Look up a klass by name from a particular class loader (the accessor's).
101 102 // If require_local, result must be defined in that class loader, or NULL.
102 103 // If !require_local, a result from remote class loader may be reported,
103 104 // if sufficient class loader constraints exist such that initiating
104 105 // a class loading request from the given loader is bound to return
105 106 // the class defined in the remote loader (or throw an error).
106 107 //
107 108 // Return an unloaded klass if !require_local and no class at all is found.
108 109 //
109 110 // The CI treats a klass as loaded if it is consistently defined in
110 111 // another loader, even if it hasn't yet been loaded in all loaders
111 112 // that could potentially see it via delegation.
112 113 ciKlass* get_klass_by_name(ciKlass* accessing_klass,
113 114 ciSymbol* klass_name,
114 115 bool require_local);
115 116
116 117 // Constant pool access.
117 118 ciKlass* get_klass_by_index(ciInstanceKlass* loading_klass,
118 119 int klass_index,
119 120 bool& is_accessible);
120 121 ciConstant get_constant_by_index(ciInstanceKlass* loading_klass,
121 122 int constant_index);
122 123 bool is_unresolved_string(ciInstanceKlass* loading_klass,
123 124 int constant_index) const;
124 125 bool is_unresolved_klass(ciInstanceKlass* loading_klass,
125 126 int constant_index) const;
126 127 ciField* get_field_by_index(ciInstanceKlass* loading_klass,
127 128 int field_index);
128 129 ciMethod* get_method_by_index(ciInstanceKlass* loading_klass,
129 130 int method_index, Bytecodes::Code bc);
130 131
131 132 // Implementation methods for loading and constant pool access.
132 133 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass,
133 134 ciSymbol* klass_name,
134 135 bool require_local);
135 136 ciKlass* get_klass_by_index_impl(ciInstanceKlass* loading_klass,
136 137 int klass_index,
137 138 bool& is_accessible);
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138 139 ciConstant get_constant_by_index_impl(ciInstanceKlass* loading_klass,
139 140 int constant_index);
140 141 bool is_unresolved_string_impl (instanceKlass* loading_klass,
141 142 int constant_index) const;
142 143 bool is_unresolved_klass_impl (instanceKlass* loading_klass,
143 144 int constant_index) const;
144 145 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass,
145 146 int field_index);
146 147 ciMethod* get_method_by_index_impl(ciInstanceKlass* loading_klass,
147 148 int method_index, Bytecodes::Code bc);
149 + ciMethod* get_fake_invokedynamic_method_impl(ciInstanceKlass* accessor,
150 + int index, Bytecodes::Code bc);
148 151
149 152 // Helper methods
150 153 bool check_klass_accessibility(ciKlass* accessing_klass,
151 154 klassOop resolved_klassOop);
152 155 methodOop lookup_method(instanceKlass* accessor,
153 156 instanceKlass* holder,
154 157 symbolOop name,
155 158 symbolOop sig,
156 159 Bytecodes::Code bc);
157 160
158 161 // Get a ciObject from the object factory. Ensures uniqueness
159 162 // of ciObjects.
160 163 ciObject* get_object(oop o) {
161 164 if (o == NULL) {
162 165 return _null_object_instance;
163 166 } else {
164 167 return _factory->get(o);
165 168 }
166 169 }
167 170
168 171 ciMethod* get_method_from_handle(jobject method);
169 172
170 173 ciInstance* get_or_create_exception(jobject& handle, symbolHandle name);
171 174
172 175 // Get a ciMethod representing either an unfound method or
173 176 // a method with an unloaded holder. Ensures uniqueness of
174 177 // the result.
175 178 ciMethod* get_unloaded_method(ciInstanceKlass* holder,
176 179 ciSymbol* name,
177 180 ciSymbol* signature) {
178 181 return _factory->get_unloaded_method(holder, name, signature);
179 182 }
180 183
181 184 // Get a ciKlass representing an unloaded klass.
182 185 // Ensures uniqueness of the result.
183 186 ciKlass* get_unloaded_klass(ciKlass* accessing_klass,
184 187 ciSymbol* name) {
185 188 return _factory->get_unloaded_klass(accessing_klass, name, true);
186 189 }
187 190
188 191 // See if we already have an unloaded klass for the given name
189 192 // or return NULL if not.
190 193 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) {
191 194 return _factory->get_unloaded_klass(accessing_klass, name, false);
192 195 }
193 196
194 197 // Get a ciReturnAddress corresponding to the given bci.
195 198 // Ensures uniqueness of the result.
196 199 ciReturnAddress* get_return_address(int bci) {
197 200 return _factory->get_return_address(bci);
198 201 }
199 202
200 203 // Get a ciMethodData representing the methodData for a method
201 204 // with none.
202 205 ciMethodData* get_empty_methodData() {
203 206 return _factory->get_empty_methodData();
204 207 }
205 208
206 209 // General utility : get a buffer of some required length.
207 210 // Used in symbol creation.
208 211 char* name_buffer(int req_len);
209 212
210 213 // Is this thread currently in the VM state?
211 214 static bool is_in_vm();
212 215
213 216 // Helper routine for determining the validity of a compilation
214 217 // with respect to concurrent class loading.
215 218 void check_for_system_dictionary_modification(ciMethod* target);
216 219
217 220 public:
218 221 enum {
219 222 MethodCompilable,
220 223 MethodCompilable_not_at_tier,
221 224 MethodCompilable_never
222 225 };
223 226
224 227 ciEnv(CompileTask* task, int system_dictionary_modification_counter);
225 228 // Used only during initialization of the ci
226 229 ciEnv(Arena* arena);
227 230 ~ciEnv();
228 231
229 232 OopRecorder* oop_recorder() { return _oop_recorder; }
230 233 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; }
231 234
232 235 DebugInformationRecorder* debug_info() { return _debug_info; }
233 236 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; }
234 237
235 238 Dependencies* dependencies() { return _dependencies; }
236 239 void set_dependencies(Dependencies* d) { _dependencies = d; }
237 240
238 241 // This is true if the compilation is not going to produce code.
239 242 // (It is reasonable to retry failed compilations.)
240 243 bool failing() { return _failure_reason != NULL; }
241 244
242 245 // Reason this compilation is failing, such as "too many basic blocks".
243 246 const char* failure_reason() { return _failure_reason; }
244 247
245 248 // Return state of appropriate compilability
246 249 int compilable() { return _compilable; }
247 250
248 251 bool break_at_compile() { return _break_at_compile; }
249 252 void set_break_at_compile(bool z) { _break_at_compile = z; }
250 253
251 254 // Cache Jvmti state
252 255 void cache_jvmti_state();
253 256 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; }
254 257 bool jvmti_can_examine_or_deopt_anywhere() const { return _jvmti_can_examine_or_deopt_anywhere; }
255 258 bool jvmti_can_access_local_variables() const { return _jvmti_can_access_local_variables; }
256 259 bool jvmti_can_post_exceptions() const { return _jvmti_can_post_exceptions; }
257 260
258 261 // Cache DTrace flags
259 262 void cache_dtrace_flags();
260 263 bool dtrace_extended_probes() const { return _dtrace_extended_probes; }
261 264 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; }
262 265 bool dtrace_method_probes() const { return _dtrace_method_probes; }
263 266 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; }
264 267
265 268 // The compiler task which has created this env.
266 269 // May be useful to find out compile_id, comp_level, etc.
267 270 CompileTask* task() { return _task; }
268 271 // Handy forwards to the task:
269 272 int comp_level(); // task()->comp_level()
270 273 uint compile_id(); // task()->compile_id()
271 274
272 275 // Register the result of a compilation.
273 276 void register_method(ciMethod* target,
274 277 int entry_bci,
275 278 CodeOffsets* offsets,
276 279 int orig_pc_offset,
277 280 CodeBuffer* code_buffer,
278 281 int frame_words,
279 282 OopMapSet* oop_map_set,
280 283 ExceptionHandlerTable* handler_table,
281 284 ImplicitExceptionTable* inc_table,
282 285 AbstractCompiler* compiler,
283 286 int comp_level,
284 287 bool has_debug_info = true,
285 288 bool has_unsafe_access = false);
286 289
287 290
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288 291 // Access to certain well known ciObjects.
289 292 ciInstanceKlass* ArrayStoreException_klass() {
290 293 return _ArrayStoreException;
291 294 }
292 295 ciInstanceKlass* Class_klass() {
293 296 return _Class;
294 297 }
295 298 ciInstanceKlass* ClassCastException_klass() {
296 299 return _ClassCastException;
297 300 }
301 + ciInstanceKlass* InvokeDynamic_klass() {
302 + return _InvokeDynamic;
303 + }
298 304 ciInstanceKlass* Object_klass() {
299 305 return _Object;
300 306 }
301 307 ciInstanceKlass* Throwable_klass() {
302 308 return _Throwable;
303 309 }
304 310 ciInstanceKlass* Thread_klass() {
305 311 return _Thread;
306 312 }
307 313 ciInstanceKlass* OutOfMemoryError_klass() {
308 314 return _OutOfMemoryError;
309 315 }
310 316 ciInstanceKlass* String_klass() {
311 317 return _String;
312 318 }
313 319 ciInstance* NullPointerException_instance() {
314 320 assert(_NullPointerException_instance != NULL, "initialization problem");
315 321 return _NullPointerException_instance;
316 322 }
317 323 ciInstance* ArithmeticException_instance() {
318 324 assert(_ArithmeticException_instance != NULL, "initialization problem");
319 325 return _ArithmeticException_instance;
320 326 }
321 327
322 328 // Lazy constructors:
323 329 ciInstance* ArrayIndexOutOfBoundsException_instance();
324 330 ciInstance* ArrayStoreException_instance();
325 331 ciInstance* ClassCastException_instance();
326 332
327 333 static ciSymbol* unloaded_cisymbol() {
328 334 return _unloaded_cisymbol;
329 335 }
330 336 static ciObjArrayKlass* unloaded_ciobjarrayklass() {
331 337 return _unloaded_ciobjarrayklass;
332 338 }
333 339 static ciInstanceKlass* unloaded_ciinstance_klass() {
334 340 return _unloaded_ciinstance_klass;
335 341 }
336 342
337 343 ciKlass* find_system_klass(ciSymbol* klass_name);
338 344 // Note: To find a class from its name string, use ciSymbol::make,
339 345 // but consider adding to vmSymbols.hpp instead.
340 346
341 347 // Use this to make a holder for non-perm compile time constants.
342 348 // The resulting array is guaranteed to satisfy "can_be_constant".
343 349 ciArray* make_system_array(GrowableArray<ciObject*>* objects);
344 350
345 351 // converts the ciKlass* representing the holder of a method into a
346 352 // ciInstanceKlass*. This is needed since the holder of a method in
347 353 // the bytecodes could be an array type. Basically this converts
348 354 // array types into java/lang/Object and other types stay as they are.
349 355 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass);
350 356
351 357 // Return the machine-level offset of o, which must be an element of a.
352 358 // This may be used to form constant-loading expressions in lieu of simpler encodings.
353 359 int array_element_offset_in_bytes(ciArray* a, ciObject* o);
354 360
355 361 // Access to the compile-lifetime allocation arena.
356 362 Arena* arena() { return _arena; }
357 363
358 364 // What is the current compilation environment?
359 365 static ciEnv* current() { return CompilerThread::current()->env(); }
360 366
361 367 // Overload with current thread argument
362 368 static ciEnv* current(CompilerThread *thread) { return thread->env(); }
363 369
364 370 // Per-compiler data. (Used by C2 to publish the Compile* pointer.)
365 371 void* compiler_data() { return _compiler_data; }
366 372 void set_compiler_data(void* x) { _compiler_data = x; }
367 373
368 374 // Notice that a method has been inlined in the current compile;
369 375 // used only for statistics.
370 376 void notice_inlined_method(ciMethod* method);
371 377
372 378 // Total number of bytecodes in inlined methods in this compile
373 379 int num_inlined_bytecodes() const;
374 380
375 381 // Output stream for logging compilation info.
376 382 CompileLog* log() { return _log; }
377 383 void set_log(CompileLog* log) { _log = log; }
378 384
379 385 // Check for changes to the system dictionary during compilation
380 386 bool system_dictionary_modification_counter_changed();
381 387
382 388 void record_failure(const char* reason);
383 389 void record_method_not_compilable(const char* reason, bool all_tiers = true);
384 390 void record_out_of_memory_failure();
385 391 };
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