Mercurial > hg > graal-compiler
comparison src/share/vm/ci/ciEnv.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | c96bf21b756f |
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1 /* | |
2 * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 class CompileTask; | |
26 | |
27 // ciEnv | |
28 // | |
29 // This class is the top level broker for requests from the compiler | |
30 // to the VM. | |
31 class ciEnv : StackObj { | |
32 CI_PACKAGE_ACCESS_TO | |
33 | |
34 friend class CompileBroker; | |
35 friend class Dependencies; // for get_object, during logging | |
36 | |
37 private: | |
38 Arena* _arena; // Alias for _ciEnv_arena except in init_shared_objects() | |
39 Arena _ciEnv_arena; | |
40 int _system_dictionary_modification_counter; | |
41 ciObjectFactory* _factory; | |
42 OopRecorder* _oop_recorder; | |
43 DebugInformationRecorder* _debug_info; | |
44 Dependencies* _dependencies; | |
45 const char* _failure_reason; | |
46 int _compilable; | |
47 bool _break_at_compile; | |
48 int _num_inlined_bytecodes; | |
49 CompileTask* _task; // faster access to CompilerThread::task | |
50 CompileLog* _log; // faster access to CompilerThread::log | |
51 void* _compiler_data; // compiler-specific stuff, if any | |
52 | |
53 char* _name_buffer; | |
54 int _name_buffer_len; | |
55 | |
56 // Distinguished instances of certain ciObjects.. | |
57 static ciObject* _null_object_instance; | |
58 static ciMethodKlass* _method_klass_instance; | |
59 static ciSymbolKlass* _symbol_klass_instance; | |
60 static ciKlassKlass* _klass_klass_instance; | |
61 static ciInstanceKlassKlass* _instance_klass_klass_instance; | |
62 static ciTypeArrayKlassKlass* _type_array_klass_klass_instance; | |
63 static ciObjArrayKlassKlass* _obj_array_klass_klass_instance; | |
64 | |
65 static ciInstanceKlass* _ArrayStoreException; | |
66 static ciInstanceKlass* _Class; | |
67 static ciInstanceKlass* _ClassCastException; | |
68 static ciInstanceKlass* _Object; | |
69 static ciInstanceKlass* _Throwable; | |
70 static ciInstanceKlass* _Thread; | |
71 static ciInstanceKlass* _OutOfMemoryError; | |
72 static ciInstanceKlass* _String; | |
73 | |
74 static ciSymbol* _unloaded_cisymbol; | |
75 static ciInstanceKlass* _unloaded_ciinstance_klass; | |
76 static ciObjArrayKlass* _unloaded_ciobjarrayklass; | |
77 | |
78 static jobject _ArrayIndexOutOfBoundsException_handle; | |
79 static jobject _ArrayStoreException_handle; | |
80 static jobject _ClassCastException_handle; | |
81 | |
82 ciInstance* _NullPointerException_instance; | |
83 ciInstance* _ArithmeticException_instance; | |
84 ciInstance* _ArrayIndexOutOfBoundsException_instance; | |
85 ciInstance* _ArrayStoreException_instance; | |
86 ciInstance* _ClassCastException_instance; | |
87 | |
88 // Look up a klass by name from a particular class loader (the accessor's). | |
89 // If require_local, result must be defined in that class loader, or NULL. | |
90 // If !require_local, a result from remote class loader may be reported, | |
91 // if sufficient class loader constraints exist such that initiating | |
92 // a class loading request from the given loader is bound to return | |
93 // the class defined in the remote loader (or throw an error). | |
94 // | |
95 // Return an unloaded klass if !require_local and no class at all is found. | |
96 // | |
97 // The CI treats a klass as loaded if it is consistently defined in | |
98 // another loader, even if it hasn't yet been loaded in all loaders | |
99 // that could potentially see it via delegation. | |
100 ciKlass* get_klass_by_name(ciKlass* accessing_klass, | |
101 ciSymbol* klass_name, | |
102 bool require_local); | |
103 | |
104 // Constant pool access. | |
105 ciKlass* get_klass_by_index(ciInstanceKlass* loading_klass, | |
106 int klass_index, | |
107 bool& is_accessible); | |
108 ciConstant get_constant_by_index(ciInstanceKlass* loading_klass, | |
109 int constant_index); | |
110 bool is_unresolved_string(ciInstanceKlass* loading_klass, | |
111 int constant_index) const; | |
112 bool is_unresolved_klass(ciInstanceKlass* loading_klass, | |
113 int constant_index) const; | |
114 ciField* get_field_by_index(ciInstanceKlass* loading_klass, | |
115 int field_index); | |
116 ciMethod* get_method_by_index(ciInstanceKlass* loading_klass, | |
117 int method_index, Bytecodes::Code bc); | |
118 | |
119 // Implementation methods for loading and constant pool access. | |
120 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass, | |
121 ciSymbol* klass_name, | |
122 bool require_local); | |
123 ciKlass* get_klass_by_index_impl(ciInstanceKlass* loading_klass, | |
124 int klass_index, | |
125 bool& is_accessible); | |
126 ciConstant get_constant_by_index_impl(ciInstanceKlass* loading_klass, | |
127 int constant_index); | |
128 bool is_unresolved_string_impl (instanceKlass* loading_klass, | |
129 int constant_index) const; | |
130 bool is_unresolved_klass_impl (instanceKlass* loading_klass, | |
131 int constant_index) const; | |
132 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass, | |
133 int field_index); | |
134 ciMethod* get_method_by_index_impl(ciInstanceKlass* loading_klass, | |
135 int method_index, Bytecodes::Code bc); | |
136 | |
137 // Helper methods | |
138 bool check_klass_accessibility(ciKlass* accessing_klass, | |
139 klassOop resolved_klassOop); | |
140 methodOop lookup_method(instanceKlass* accessor, | |
141 instanceKlass* holder, | |
142 symbolOop name, | |
143 symbolOop sig, | |
144 Bytecodes::Code bc); | |
145 | |
146 // Get a ciObject from the object factory. Ensures uniqueness | |
147 // of ciObjects. | |
148 ciObject* get_object(oop o) { | |
149 if (o == NULL) { | |
150 return _null_object_instance; | |
151 } else { | |
152 return _factory->get(o); | |
153 } | |
154 } | |
155 | |
156 ciMethod* get_method_from_handle(jobject method); | |
157 | |
158 ciInstance* get_or_create_exception(jobject& handle, symbolHandle name); | |
159 | |
160 // Get a ciMethod representing either an unfound method or | |
161 // a method with an unloaded holder. Ensures uniqueness of | |
162 // the result. | |
163 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
164 ciSymbol* name, | |
165 ciSymbol* signature) { | |
166 return _factory->get_unloaded_method(holder, name, signature); | |
167 } | |
168 | |
169 // Get a ciKlass representing an unloaded klass. | |
170 // Ensures uniqueness of the result. | |
171 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, | |
172 ciSymbol* name) { | |
173 return _factory->get_unloaded_klass(accessing_klass, name, true); | |
174 } | |
175 | |
176 // See if we already have an unloaded klass for the given name | |
177 // or return NULL if not. | |
178 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) { | |
179 return _factory->get_unloaded_klass(accessing_klass, name, false); | |
180 } | |
181 | |
182 // Get a ciReturnAddress corresponding to the given bci. | |
183 // Ensures uniqueness of the result. | |
184 ciReturnAddress* get_return_address(int bci) { | |
185 return _factory->get_return_address(bci); | |
186 } | |
187 | |
188 // Get a ciMethodData representing the methodData for a method | |
189 // with none. | |
190 ciMethodData* get_empty_methodData() { | |
191 return _factory->get_empty_methodData(); | |
192 } | |
193 | |
194 // General utility : get a buffer of some required length. | |
195 // Used in symbol creation. | |
196 char* name_buffer(int req_len); | |
197 | |
198 // Is this thread currently in the VM state? | |
199 static bool is_in_vm(); | |
200 | |
201 // Helper routine for determining the validity of a compilation | |
202 // with respect to concurrent class loading. | |
203 void check_for_system_dictionary_modification(ciMethod* target); | |
204 | |
205 public: | |
206 enum { | |
207 MethodCompilable, | |
208 MethodCompilable_not_at_tier, | |
209 MethodCompilable_never | |
210 }; | |
211 | |
212 ciEnv(CompileTask* task, int system_dictionary_modification_counter); | |
213 // Used only during initialization of the ci | |
214 ciEnv(Arena* arena); | |
215 ~ciEnv(); | |
216 | |
217 OopRecorder* oop_recorder() { return _oop_recorder; } | |
218 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; } | |
219 | |
220 DebugInformationRecorder* debug_info() { return _debug_info; } | |
221 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; } | |
222 | |
223 Dependencies* dependencies() { return _dependencies; } | |
224 void set_dependencies(Dependencies* d) { _dependencies = d; } | |
225 | |
226 // This is true if the compilation is not going to produce code. | |
227 // (It is reasonable to retry failed compilations.) | |
228 bool failing() { return _failure_reason != NULL; } | |
229 | |
230 // Reason this compilation is failing, such as "too many basic blocks". | |
231 const char* failure_reason() { return _failure_reason; } | |
232 | |
233 // Return state of appropriate compilability | |
234 int compilable() { return _compilable; } | |
235 | |
236 bool break_at_compile() { return _break_at_compile; } | |
237 void set_break_at_compile(bool z) { _break_at_compile = z; } | |
238 | |
239 // The compiler task which has created this env. | |
240 // May be useful to find out compile_id, comp_level, etc. | |
241 CompileTask* task() { return _task; } | |
242 // Handy forwards to the task: | |
243 int comp_level(); // task()->comp_level() | |
244 uint compile_id(); // task()->compile_id() | |
245 | |
246 // Register the result of a compilation. | |
247 void register_method(ciMethod* target, | |
248 int entry_bci, | |
249 CodeOffsets* offsets, | |
250 int orig_pc_offset, | |
251 CodeBuffer* code_buffer, | |
252 int frame_words, | |
253 OopMapSet* oop_map_set, | |
254 ExceptionHandlerTable* handler_table, | |
255 ImplicitExceptionTable* inc_table, | |
256 AbstractCompiler* compiler, | |
257 int comp_level, | |
258 bool has_debug_info = true, | |
259 bool has_unsafe_access = false); | |
260 | |
261 | |
262 // Access to certain well known ciObjects. | |
263 ciInstanceKlass* ArrayStoreException_klass() { | |
264 return _ArrayStoreException; | |
265 } | |
266 ciInstanceKlass* Class_klass() { | |
267 return _Class; | |
268 } | |
269 ciInstanceKlass* ClassCastException_klass() { | |
270 return _ClassCastException; | |
271 } | |
272 ciInstanceKlass* Object_klass() { | |
273 return _Object; | |
274 } | |
275 ciInstanceKlass* Throwable_klass() { | |
276 return _Throwable; | |
277 } | |
278 ciInstanceKlass* Thread_klass() { | |
279 return _Thread; | |
280 } | |
281 ciInstanceKlass* OutOfMemoryError_klass() { | |
282 return _OutOfMemoryError; | |
283 } | |
284 ciInstanceKlass* String_klass() { | |
285 return _String; | |
286 } | |
287 ciInstance* NullPointerException_instance() { | |
288 assert(_NullPointerException_instance != NULL, "initialization problem"); | |
289 return _NullPointerException_instance; | |
290 } | |
291 ciInstance* ArithmeticException_instance() { | |
292 assert(_ArithmeticException_instance != NULL, "initialization problem"); | |
293 return _ArithmeticException_instance; | |
294 } | |
295 | |
296 // Lazy constructors: | |
297 ciInstance* ArrayIndexOutOfBoundsException_instance(); | |
298 ciInstance* ArrayStoreException_instance(); | |
299 ciInstance* ClassCastException_instance(); | |
300 | |
301 static ciSymbol* unloaded_cisymbol() { | |
302 return _unloaded_cisymbol; | |
303 } | |
304 static ciObjArrayKlass* unloaded_ciobjarrayklass() { | |
305 return _unloaded_ciobjarrayklass; | |
306 } | |
307 static ciInstanceKlass* unloaded_ciinstance_klass() { | |
308 return _unloaded_ciinstance_klass; | |
309 } | |
310 | |
311 ciKlass* find_system_klass(ciSymbol* klass_name); | |
312 // Note: To find a class from its name string, use ciSymbol::make, | |
313 // but consider adding to vmSymbols.hpp instead. | |
314 | |
315 // Use this to make a holder for non-perm compile time constants. | |
316 // The resulting array is guaranteed to satisfy "has_encoding". | |
317 ciArray* make_array(GrowableArray<ciObject*>* objects); | |
318 | |
319 // converts the ciKlass* representing the holder of a method into a | |
320 // ciInstanceKlass*. This is needed since the holder of a method in | |
321 // the bytecodes could be an array type. Basically this converts | |
322 // array types into java/lang/Object and other types stay as they are. | |
323 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass); | |
324 | |
325 // Return the machine-level offset of o, which must be an element of a. | |
326 // This may be used to form constant-loading expressions in lieu of simpler encodings. | |
327 int array_element_offset_in_bytes(ciArray* a, ciObject* o); | |
328 | |
329 // Access to the compile-lifetime allocation arena. | |
330 Arena* arena() { return _arena; } | |
331 | |
332 // What is the current compilation environment? | |
333 static ciEnv* current() { return CompilerThread::current()->env(); } | |
334 | |
335 // Overload with current thread argument | |
336 static ciEnv* current(CompilerThread *thread) { return thread->env(); } | |
337 | |
338 // Per-compiler data. (Used by C2 to publish the Compile* pointer.) | |
339 void* compiler_data() { return _compiler_data; } | |
340 void set_compiler_data(void* x) { _compiler_data = x; } | |
341 | |
342 // Notice that a method has been inlined in the current compile; | |
343 // used only for statistics. | |
344 void notice_inlined_method(ciMethod* method); | |
345 | |
346 // Total number of bytecodes in inlined methods in this compile | |
347 int num_inlined_bytecodes() const; | |
348 | |
349 // Output stream for logging compilation info. | |
350 CompileLog* log() { return _log; } | |
351 void set_log(CompileLog* log) { _log = log; } | |
352 | |
353 // Check for changes to the system dictionary during compilation | |
354 bool system_dictionary_modification_counter_changed(); | |
355 | |
356 void record_failure(const char* reason); | |
357 void record_method_not_compilable(const char* reason, bool all_tiers = true); | |
358 void record_out_of_memory_failure(); | |
359 }; |