Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.hpp @ 2044:06f017f7daa7
Merge.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Fri, 07 Jan 2011 18:18:08 +0100 |
parents | 2d26b0046e0d f95d63e2154a |
children | d25d4ca69222 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CI_CIENV_HPP |
26 #define SHARE_VM_CI_CIENV_HPP | |
27 | |
28 #include "ci/ciClassList.hpp" | |
29 #include "ci/ciObjectFactory.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "code/debugInfoRec.hpp" | |
32 #include "code/dependencies.hpp" | |
33 #include "code/exceptionHandlerTable.hpp" | |
34 #include "compiler/oopMap.hpp" | |
35 #include "runtime/thread.hpp" | |
36 | |
0 | 37 class CompileTask; |
38 | |
39 // ciEnv | |
40 // | |
41 // This class is the top level broker for requests from the compiler | |
42 // to the VM. | |
43 class ciEnv : StackObj { | |
44 CI_PACKAGE_ACCESS_TO | |
45 | |
46 friend class CompileBroker; | |
47 friend class Dependencies; // for get_object, during logging | |
48 | |
49 private: | |
50 Arena* _arena; // Alias for _ciEnv_arena except in init_shared_objects() | |
51 Arena _ciEnv_arena; | |
52 int _system_dictionary_modification_counter; | |
53 ciObjectFactory* _factory; | |
54 OopRecorder* _oop_recorder; | |
55 DebugInformationRecorder* _debug_info; | |
56 Dependencies* _dependencies; | |
57 const char* _failure_reason; | |
58 int _compilable; | |
59 bool _break_at_compile; | |
60 int _num_inlined_bytecodes; | |
61 CompileTask* _task; // faster access to CompilerThread::task | |
62 CompileLog* _log; // faster access to CompilerThread::log | |
63 void* _compiler_data; // compiler-specific stuff, if any | |
64 | |
65 char* _name_buffer; | |
66 int _name_buffer_len; | |
67 | |
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68 // Cache Jvmti state |
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69 bool _jvmti_can_hotswap_or_post_breakpoint; |
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70 bool _jvmti_can_access_local_variables; |
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71 bool _jvmti_can_post_on_exceptions; |
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72 |
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73 // Cache DTrace flags |
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74 bool _dtrace_extended_probes; |
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75 bool _dtrace_monitor_probes; |
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76 bool _dtrace_method_probes; |
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77 bool _dtrace_alloc_probes; |
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78 |
0 | 79 // Distinguished instances of certain ciObjects.. |
80 static ciObject* _null_object_instance; | |
81 static ciMethodKlass* _method_klass_instance; | |
82 static ciSymbolKlass* _symbol_klass_instance; | |
83 static ciKlassKlass* _klass_klass_instance; | |
84 static ciInstanceKlassKlass* _instance_klass_klass_instance; | |
85 static ciTypeArrayKlassKlass* _type_array_klass_klass_instance; | |
86 static ciObjArrayKlassKlass* _obj_array_klass_klass_instance; | |
87 | |
1142 | 88 #define WK_KLASS_DECL(name, ignore_s, ignore_o) static ciInstanceKlass* _##name; |
89 WK_KLASSES_DO(WK_KLASS_DECL) | |
90 #undef WK_KLASS_DECL | |
0 | 91 |
92 static ciSymbol* _unloaded_cisymbol; | |
93 static ciInstanceKlass* _unloaded_ciinstance_klass; | |
94 static ciObjArrayKlass* _unloaded_ciobjarrayklass; | |
95 | |
96 static jobject _ArrayIndexOutOfBoundsException_handle; | |
97 static jobject _ArrayStoreException_handle; | |
98 static jobject _ClassCastException_handle; | |
99 | |
100 ciInstance* _NullPointerException_instance; | |
101 ciInstance* _ArithmeticException_instance; | |
102 ciInstance* _ArrayIndexOutOfBoundsException_instance; | |
103 ciInstance* _ArrayStoreException_instance; | |
104 ciInstance* _ClassCastException_instance; | |
105 | |
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106 ciInstance* _the_null_string; // The Java string "null" |
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107 ciInstance* _the_min_jint_string; // The Java string "-2147483648" |
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108 |
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109 public: |
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110 |
0 | 111 // Look up a klass by name from a particular class loader (the accessor's). |
112 // If require_local, result must be defined in that class loader, or NULL. | |
113 // If !require_local, a result from remote class loader may be reported, | |
114 // if sufficient class loader constraints exist such that initiating | |
115 // a class loading request from the given loader is bound to return | |
116 // the class defined in the remote loader (or throw an error). | |
117 // | |
118 // Return an unloaded klass if !require_local and no class at all is found. | |
119 // | |
120 // The CI treats a klass as loaded if it is consistently defined in | |
121 // another loader, even if it hasn't yet been loaded in all loaders | |
122 // that could potentially see it via delegation. | |
123 ciKlass* get_klass_by_name(ciKlass* accessing_klass, | |
124 ciSymbol* klass_name, | |
125 bool require_local); | |
126 | |
127 // Constant pool access. | |
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128 ciKlass* get_klass_by_index(constantPoolHandle cpool, |
0 | 129 int klass_index, |
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130 bool& is_accessible, |
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131 ciInstanceKlass* loading_klass); |
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132 ciConstant get_constant_by_index(constantPoolHandle cpool, |
1602 | 133 int pool_index, int cache_index, |
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134 ciInstanceKlass* accessor); |
0 | 135 ciField* get_field_by_index(ciInstanceKlass* loading_klass, |
136 int field_index); | |
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137 ciMethod* get_method_by_index(constantPoolHandle cpool, |
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138 int method_index, Bytecodes::Code bc, |
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139 ciInstanceKlass* loading_klass); |
0 | 140 |
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141 private: |
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142 |
0 | 143 // Implementation methods for loading and constant pool access. |
144 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass, | |
145 ciSymbol* klass_name, | |
146 bool require_local); | |
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147 ciKlass* get_klass_by_index_impl(constantPoolHandle cpool, |
0 | 148 int klass_index, |
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149 bool& is_accessible, |
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150 ciInstanceKlass* loading_klass); |
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151 ciConstant get_constant_by_index_impl(constantPoolHandle cpool, |
1602 | 152 int pool_index, int cache_index, |
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153 ciInstanceKlass* loading_klass); |
0 | 154 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass, |
155 int field_index); | |
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156 ciMethod* get_method_by_index_impl(constantPoolHandle cpool, |
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157 int method_index, Bytecodes::Code bc, |
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158 ciInstanceKlass* loading_klass); |
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159 ciMethod* get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
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160 int index, Bytecodes::Code bc); |
0 | 161 |
162 // Helper methods | |
163 bool check_klass_accessibility(ciKlass* accessing_klass, | |
164 klassOop resolved_klassOop); | |
165 methodOop lookup_method(instanceKlass* accessor, | |
166 instanceKlass* holder, | |
167 symbolOop name, | |
168 symbolOop sig, | |
169 Bytecodes::Code bc); | |
170 | |
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171 public: |
0 | 172 // Get a ciObject from the object factory. Ensures uniqueness |
173 // of ciObjects. | |
174 ciObject* get_object(oop o) { | |
175 if (o == NULL) { | |
176 return _null_object_instance; | |
177 } else { | |
178 return _factory->get(o); | |
179 } | |
180 } | |
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181 private: |
0 | 182 |
183 ciMethod* get_method_from_handle(jobject method); | |
184 | |
185 ciInstance* get_or_create_exception(jobject& handle, symbolHandle name); | |
186 | |
187 // Get a ciMethod representing either an unfound method or | |
188 // a method with an unloaded holder. Ensures uniqueness of | |
189 // the result. | |
190 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
191 ciSymbol* name, | |
192 ciSymbol* signature) { | |
193 return _factory->get_unloaded_method(holder, name, signature); | |
194 } | |
195 | |
196 // Get a ciKlass representing an unloaded klass. | |
197 // Ensures uniqueness of the result. | |
198 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, | |
199 ciSymbol* name) { | |
200 return _factory->get_unloaded_klass(accessing_klass, name, true); | |
201 } | |
202 | |
1602 | 203 // Get a ciKlass representing an unloaded klass mirror. |
204 // Result is not necessarily unique, but will be unloaded. | |
205 ciInstance* get_unloaded_klass_mirror(ciKlass* type) { | |
206 return _factory->get_unloaded_klass_mirror(type); | |
207 } | |
208 | |
209 // Get a ciInstance representing an unresolved method handle constant. | |
210 ciInstance* get_unloaded_method_handle_constant(ciKlass* holder, | |
211 ciSymbol* name, | |
212 ciSymbol* signature, | |
213 int ref_kind) { | |
214 return _factory->get_unloaded_method_handle_constant(holder, name, signature, ref_kind); | |
215 } | |
216 | |
217 // Get a ciInstance representing an unresolved method type constant. | |
218 ciInstance* get_unloaded_method_type_constant(ciSymbol* signature) { | |
219 return _factory->get_unloaded_method_type_constant(signature); | |
220 } | |
221 | |
0 | 222 // See if we already have an unloaded klass for the given name |
223 // or return NULL if not. | |
224 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) { | |
225 return _factory->get_unloaded_klass(accessing_klass, name, false); | |
226 } | |
227 | |
228 // Get a ciReturnAddress corresponding to the given bci. | |
229 // Ensures uniqueness of the result. | |
230 ciReturnAddress* get_return_address(int bci) { | |
231 return _factory->get_return_address(bci); | |
232 } | |
233 | |
234 // Get a ciMethodData representing the methodData for a method | |
235 // with none. | |
236 ciMethodData* get_empty_methodData() { | |
237 return _factory->get_empty_methodData(); | |
238 } | |
239 | |
240 // General utility : get a buffer of some required length. | |
241 // Used in symbol creation. | |
242 char* name_buffer(int req_len); | |
243 | |
244 // Is this thread currently in the VM state? | |
245 static bool is_in_vm(); | |
246 | |
247 // Helper routine for determining the validity of a compilation | |
248 // with respect to concurrent class loading. | |
249 void check_for_system_dictionary_modification(ciMethod* target); | |
250 | |
251 public: | |
252 enum { | |
253 MethodCompilable, | |
254 MethodCompilable_not_at_tier, | |
255 MethodCompilable_never | |
256 }; | |
257 | |
258 ciEnv(CompileTask* task, int system_dictionary_modification_counter); | |
259 // Used only during initialization of the ci | |
260 ciEnv(Arena* arena); | |
261 ~ciEnv(); | |
262 | |
263 OopRecorder* oop_recorder() { return _oop_recorder; } | |
264 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; } | |
265 | |
266 DebugInformationRecorder* debug_info() { return _debug_info; } | |
267 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; } | |
268 | |
269 Dependencies* dependencies() { return _dependencies; } | |
270 void set_dependencies(Dependencies* d) { _dependencies = d; } | |
271 | |
272 // This is true if the compilation is not going to produce code. | |
273 // (It is reasonable to retry failed compilations.) | |
274 bool failing() { return _failure_reason != NULL; } | |
275 | |
276 // Reason this compilation is failing, such as "too many basic blocks". | |
277 const char* failure_reason() { return _failure_reason; } | |
278 | |
279 // Return state of appropriate compilability | |
280 int compilable() { return _compilable; } | |
281 | |
282 bool break_at_compile() { return _break_at_compile; } | |
283 void set_break_at_compile(bool z) { _break_at_compile = z; } | |
284 | |
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285 // Cache Jvmti state |
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286 void cache_jvmti_state(); |
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287 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; } |
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288 bool jvmti_can_access_local_variables() const { return _jvmti_can_access_local_variables; } |
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289 bool jvmti_can_post_on_exceptions() const { return _jvmti_can_post_on_exceptions; } |
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290 |
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291 // Cache DTrace flags |
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292 void cache_dtrace_flags(); |
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293 bool dtrace_extended_probes() const { return _dtrace_extended_probes; } |
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294 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; } |
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295 bool dtrace_method_probes() const { return _dtrace_method_probes; } |
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296 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; } |
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297 |
0 | 298 // The compiler task which has created this env. |
299 // May be useful to find out compile_id, comp_level, etc. | |
300 CompileTask* task() { return _task; } | |
301 // Handy forwards to the task: | |
302 int comp_level(); // task()->comp_level() | |
303 uint compile_id(); // task()->compile_id() | |
304 | |
305 // Register the result of a compilation. | |
306 void register_method(ciMethod* target, | |
307 int entry_bci, | |
308 CodeOffsets* offsets, | |
309 int orig_pc_offset, | |
310 CodeBuffer* code_buffer, | |
311 int frame_words, | |
312 OopMapSet* oop_map_set, | |
313 ExceptionHandlerTable* handler_table, | |
314 ImplicitExceptionTable* inc_table, | |
315 AbstractCompiler* compiler, | |
316 int comp_level, | |
317 bool has_debug_info = true, | |
318 bool has_unsafe_access = false); | |
319 | |
320 | |
321 // Access to certain well known ciObjects. | |
1142 | 322 #define WK_KLASS_FUNC(name, ignore_s, ignore_o) \ |
323 ciInstanceKlass* name() { \ | |
324 return _##name;\ | |
0 | 325 } |
1142 | 326 WK_KLASSES_DO(WK_KLASS_FUNC) |
327 #undef WK_KLASS_FUNC | |
328 | |
0 | 329 ciInstance* NullPointerException_instance() { |
330 assert(_NullPointerException_instance != NULL, "initialization problem"); | |
331 return _NullPointerException_instance; | |
332 } | |
333 ciInstance* ArithmeticException_instance() { | |
334 assert(_ArithmeticException_instance != NULL, "initialization problem"); | |
335 return _ArithmeticException_instance; | |
336 } | |
337 | |
338 // Lazy constructors: | |
339 ciInstance* ArrayIndexOutOfBoundsException_instance(); | |
340 ciInstance* ArrayStoreException_instance(); | |
341 ciInstance* ClassCastException_instance(); | |
342 | |
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343 ciInstance* the_null_string(); |
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344 ciInstance* the_min_jint_string(); |
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345 |
0 | 346 static ciSymbol* unloaded_cisymbol() { |
347 return _unloaded_cisymbol; | |
348 } | |
349 static ciObjArrayKlass* unloaded_ciobjarrayklass() { | |
350 return _unloaded_ciobjarrayklass; | |
351 } | |
352 static ciInstanceKlass* unloaded_ciinstance_klass() { | |
353 return _unloaded_ciinstance_klass; | |
354 } | |
355 | |
356 ciKlass* find_system_klass(ciSymbol* klass_name); | |
357 // Note: To find a class from its name string, use ciSymbol::make, | |
358 // but consider adding to vmSymbols.hpp instead. | |
359 | |
360 // Use this to make a holder for non-perm compile time constants. | |
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361 // The resulting array is guaranteed to satisfy "can_be_constant". |
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362 ciArray* make_system_array(GrowableArray<ciObject*>* objects); |
0 | 363 |
364 // converts the ciKlass* representing the holder of a method into a | |
365 // ciInstanceKlass*. This is needed since the holder of a method in | |
366 // the bytecodes could be an array type. Basically this converts | |
367 // array types into java/lang/Object and other types stay as they are. | |
368 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass); | |
369 | |
370 // Return the machine-level offset of o, which must be an element of a. | |
371 // This may be used to form constant-loading expressions in lieu of simpler encodings. | |
372 int array_element_offset_in_bytes(ciArray* a, ciObject* o); | |
373 | |
374 // Access to the compile-lifetime allocation arena. | |
375 Arena* arena() { return _arena; } | |
376 | |
377 // What is the current compilation environment? | |
378 static ciEnv* current() { return CompilerThread::current()->env(); } | |
379 | |
380 // Overload with current thread argument | |
381 static ciEnv* current(CompilerThread *thread) { return thread->env(); } | |
382 | |
383 // Per-compiler data. (Used by C2 to publish the Compile* pointer.) | |
384 void* compiler_data() { return _compiler_data; } | |
385 void set_compiler_data(void* x) { _compiler_data = x; } | |
386 | |
387 // Notice that a method has been inlined in the current compile; | |
388 // used only for statistics. | |
389 void notice_inlined_method(ciMethod* method); | |
390 | |
391 // Total number of bytecodes in inlined methods in this compile | |
392 int num_inlined_bytecodes() const; | |
393 | |
394 // Output stream for logging compilation info. | |
395 CompileLog* log() { return _log; } | |
396 void set_log(CompileLog* log) { _log = log; } | |
397 | |
398 // Check for changes to the system dictionary during compilation | |
399 bool system_dictionary_modification_counter_changed(); | |
400 | |
401 void record_failure(const char* reason); | |
402 void record_method_not_compilable(const char* reason, bool all_tiers = true); | |
403 void record_out_of_memory_failure(); | |
404 }; | |
1972 | 405 |
406 #endif // SHARE_VM_CI_CIENV_HPP |