Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.hpp @ 1413:1ecc8f0aad00
Draft implementation of HotSpot CRI / first method compiling without exception.
author | Thomas Wuerthinger <thomas.wuerthinger@gmail.com> |
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date | Tue, 18 May 2010 17:43:37 +0200 |
parents | b4776199210f |
children | 2d26b0046e0d |
rev | line source |
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0 | 1 /* |
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2 * Copyright 1999-2010 Sun Microsystems, Inc. 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 * | |
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 | |
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56 // Cache Jvmti state |
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57 bool _jvmti_can_hotswap_or_post_breakpoint; |
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58 bool _jvmti_can_access_local_variables; |
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59 bool _jvmti_can_post_on_exceptions; |
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60 |
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61 // Cache DTrace flags |
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62 bool _dtrace_extended_probes; |
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63 bool _dtrace_monitor_probes; |
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64 bool _dtrace_method_probes; |
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65 bool _dtrace_alloc_probes; |
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66 |
0 | 67 // Distinguished instances of certain ciObjects.. |
68 static ciObject* _null_object_instance; | |
69 static ciMethodKlass* _method_klass_instance; | |
70 static ciSymbolKlass* _symbol_klass_instance; | |
71 static ciKlassKlass* _klass_klass_instance; | |
72 static ciInstanceKlassKlass* _instance_klass_klass_instance; | |
73 static ciTypeArrayKlassKlass* _type_array_klass_klass_instance; | |
74 static ciObjArrayKlassKlass* _obj_array_klass_klass_instance; | |
75 | |
1142 | 76 #define WK_KLASS_DECL(name, ignore_s, ignore_o) static ciInstanceKlass* _##name; |
77 WK_KLASSES_DO(WK_KLASS_DECL) | |
78 #undef WK_KLASS_DECL | |
0 | 79 |
80 static ciSymbol* _unloaded_cisymbol; | |
81 static ciInstanceKlass* _unloaded_ciinstance_klass; | |
82 static ciObjArrayKlass* _unloaded_ciobjarrayklass; | |
83 | |
84 static jobject _ArrayIndexOutOfBoundsException_handle; | |
85 static jobject _ArrayStoreException_handle; | |
86 static jobject _ClassCastException_handle; | |
87 | |
88 ciInstance* _NullPointerException_instance; | |
89 ciInstance* _ArithmeticException_instance; | |
90 ciInstance* _ArrayIndexOutOfBoundsException_instance; | |
91 ciInstance* _ArrayStoreException_instance; | |
92 ciInstance* _ClassCastException_instance; | |
93 | |
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94 ciInstance* _the_null_string; // The Java string "null" |
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95 ciInstance* _the_min_jint_string; // The Java string "-2147483648" |
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96 |
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97 public: |
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98 |
0 | 99 // Look up a klass by name from a particular class loader (the accessor's). |
100 // If require_local, result must be defined in that class loader, or NULL. | |
101 // If !require_local, a result from remote class loader may be reported, | |
102 // if sufficient class loader constraints exist such that initiating | |
103 // a class loading request from the given loader is bound to return | |
104 // the class defined in the remote loader (or throw an error). | |
105 // | |
106 // Return an unloaded klass if !require_local and no class at all is found. | |
107 // | |
108 // The CI treats a klass as loaded if it is consistently defined in | |
109 // another loader, even if it hasn't yet been loaded in all loaders | |
110 // that could potentially see it via delegation. | |
111 ciKlass* get_klass_by_name(ciKlass* accessing_klass, | |
112 ciSymbol* klass_name, | |
113 bool require_local); | |
114 | |
115 // Constant pool access. | |
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116 ciKlass* get_klass_by_index(constantPoolHandle cpool, |
0 | 117 int klass_index, |
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118 bool& is_accessible, |
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119 ciInstanceKlass* loading_klass); |
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120 ciConstant get_constant_by_index(constantPoolHandle cpool, |
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121 int constant_index, |
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122 ciInstanceKlass* accessor); |
0 | 123 bool is_unresolved_string(ciInstanceKlass* loading_klass, |
124 int constant_index) const; | |
125 bool is_unresolved_klass(ciInstanceKlass* loading_klass, | |
126 int constant_index) const; | |
127 ciField* get_field_by_index(ciInstanceKlass* loading_klass, | |
128 int field_index); | |
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129 ciMethod* get_method_by_index(constantPoolHandle cpool, |
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130 int method_index, Bytecodes::Code bc, |
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131 ciInstanceKlass* loading_klass); |
0 | 132 |
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133 private: |
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134 |
0 | 135 // Implementation methods for loading and constant pool access. |
136 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass, | |
137 ciSymbol* klass_name, | |
138 bool require_local); | |
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139 ciKlass* get_klass_by_index_impl(constantPoolHandle cpool, |
0 | 140 int klass_index, |
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141 bool& is_accessible, |
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142 ciInstanceKlass* loading_klass); |
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143 ciConstant get_constant_by_index_impl(constantPoolHandle cpool, |
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144 int constant_index, |
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145 ciInstanceKlass* loading_klass); |
0 | 146 bool is_unresolved_string_impl (instanceKlass* loading_klass, |
147 int constant_index) const; | |
148 bool is_unresolved_klass_impl (instanceKlass* loading_klass, | |
149 int constant_index) const; | |
150 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass, | |
151 int field_index); | |
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152 ciMethod* get_method_by_index_impl(constantPoolHandle cpool, |
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153 int method_index, Bytecodes::Code bc, |
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154 ciInstanceKlass* loading_klass); |
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155 ciMethod* get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
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156 int index, Bytecodes::Code bc); |
0 | 157 |
158 // Helper methods | |
159 bool check_klass_accessibility(ciKlass* accessing_klass, | |
160 klassOop resolved_klassOop); | |
161 methodOop lookup_method(instanceKlass* accessor, | |
162 instanceKlass* holder, | |
163 symbolOop name, | |
164 symbolOop sig, | |
165 Bytecodes::Code bc); | |
166 | |
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167 public: |
0 | 168 // Get a ciObject from the object factory. Ensures uniqueness |
169 // of ciObjects. | |
170 ciObject* get_object(oop o) { | |
171 if (o == NULL) { | |
172 return _null_object_instance; | |
173 } else { | |
174 return _factory->get(o); | |
175 } | |
176 } | |
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177 private: |
0 | 178 |
179 ciMethod* get_method_from_handle(jobject method); | |
180 | |
181 ciInstance* get_or_create_exception(jobject& handle, symbolHandle name); | |
182 | |
183 // Get a ciMethod representing either an unfound method or | |
184 // a method with an unloaded holder. Ensures uniqueness of | |
185 // the result. | |
186 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
187 ciSymbol* name, | |
188 ciSymbol* signature) { | |
189 return _factory->get_unloaded_method(holder, name, signature); | |
190 } | |
191 | |
192 // Get a ciKlass representing an unloaded klass. | |
193 // Ensures uniqueness of the result. | |
194 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, | |
195 ciSymbol* name) { | |
196 return _factory->get_unloaded_klass(accessing_klass, name, true); | |
197 } | |
198 | |
199 // See if we already have an unloaded klass for the given name | |
200 // or return NULL if not. | |
201 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) { | |
202 return _factory->get_unloaded_klass(accessing_klass, name, false); | |
203 } | |
204 | |
205 // Get a ciReturnAddress corresponding to the given bci. | |
206 // Ensures uniqueness of the result. | |
207 ciReturnAddress* get_return_address(int bci) { | |
208 return _factory->get_return_address(bci); | |
209 } | |
210 | |
211 // Get a ciMethodData representing the methodData for a method | |
212 // with none. | |
213 ciMethodData* get_empty_methodData() { | |
214 return _factory->get_empty_methodData(); | |
215 } | |
216 | |
217 // General utility : get a buffer of some required length. | |
218 // Used in symbol creation. | |
219 char* name_buffer(int req_len); | |
220 | |
221 // Is this thread currently in the VM state? | |
222 static bool is_in_vm(); | |
223 | |
224 // Helper routine for determining the validity of a compilation | |
225 // with respect to concurrent class loading. | |
226 void check_for_system_dictionary_modification(ciMethod* target); | |
227 | |
228 public: | |
229 enum { | |
230 MethodCompilable, | |
231 MethodCompilable_not_at_tier, | |
232 MethodCompilable_never | |
233 }; | |
234 | |
235 ciEnv(CompileTask* task, int system_dictionary_modification_counter); | |
236 // Used only during initialization of the ci | |
237 ciEnv(Arena* arena); | |
238 ~ciEnv(); | |
239 | |
240 OopRecorder* oop_recorder() { return _oop_recorder; } | |
241 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; } | |
242 | |
243 DebugInformationRecorder* debug_info() { return _debug_info; } | |
244 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; } | |
245 | |
246 Dependencies* dependencies() { return _dependencies; } | |
247 void set_dependencies(Dependencies* d) { _dependencies = d; } | |
248 | |
249 // This is true if the compilation is not going to produce code. | |
250 // (It is reasonable to retry failed compilations.) | |
251 bool failing() { return _failure_reason != NULL; } | |
252 | |
253 // Reason this compilation is failing, such as "too many basic blocks". | |
254 const char* failure_reason() { return _failure_reason; } | |
255 | |
256 // Return state of appropriate compilability | |
257 int compilable() { return _compilable; } | |
258 | |
259 bool break_at_compile() { return _break_at_compile; } | |
260 void set_break_at_compile(bool z) { _break_at_compile = z; } | |
261 | |
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262 // Cache Jvmti state |
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263 void cache_jvmti_state(); |
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264 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; } |
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265 bool jvmti_can_access_local_variables() const { return _jvmti_can_access_local_variables; } |
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266 bool jvmti_can_post_on_exceptions() const { return _jvmti_can_post_on_exceptions; } |
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267 |
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268 // Cache DTrace flags |
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269 void cache_dtrace_flags(); |
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270 bool dtrace_extended_probes() const { return _dtrace_extended_probes; } |
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271 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; } |
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272 bool dtrace_method_probes() const { return _dtrace_method_probes; } |
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273 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; } |
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274 |
0 | 275 // The compiler task which has created this env. |
276 // May be useful to find out compile_id, comp_level, etc. | |
277 CompileTask* task() { return _task; } | |
278 // Handy forwards to the task: | |
279 int comp_level(); // task()->comp_level() | |
280 uint compile_id(); // task()->compile_id() | |
281 | |
282 // Register the result of a compilation. | |
283 void register_method(ciMethod* target, | |
284 int entry_bci, | |
285 CodeOffsets* offsets, | |
286 int orig_pc_offset, | |
287 CodeBuffer* code_buffer, | |
288 int frame_words, | |
289 OopMapSet* oop_map_set, | |
290 ExceptionHandlerTable* handler_table, | |
291 ImplicitExceptionTable* inc_table, | |
292 AbstractCompiler* compiler, | |
293 int comp_level, | |
294 bool has_debug_info = true, | |
295 bool has_unsafe_access = false); | |
296 | |
297 | |
298 // Access to certain well known ciObjects. | |
1142 | 299 #define WK_KLASS_FUNC(name, ignore_s, ignore_o) \ |
300 ciInstanceKlass* name() { \ | |
301 return _##name;\ | |
0 | 302 } |
1142 | 303 WK_KLASSES_DO(WK_KLASS_FUNC) |
304 #undef WK_KLASS_FUNC | |
305 | |
0 | 306 ciInstance* NullPointerException_instance() { |
307 assert(_NullPointerException_instance != NULL, "initialization problem"); | |
308 return _NullPointerException_instance; | |
309 } | |
310 ciInstance* ArithmeticException_instance() { | |
311 assert(_ArithmeticException_instance != NULL, "initialization problem"); | |
312 return _ArithmeticException_instance; | |
313 } | |
314 | |
315 // Lazy constructors: | |
316 ciInstance* ArrayIndexOutOfBoundsException_instance(); | |
317 ciInstance* ArrayStoreException_instance(); | |
318 ciInstance* ClassCastException_instance(); | |
319 | |
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320 ciInstance* the_null_string(); |
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321 ciInstance* the_min_jint_string(); |
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322 |
0 | 323 static ciSymbol* unloaded_cisymbol() { |
324 return _unloaded_cisymbol; | |
325 } | |
326 static ciObjArrayKlass* unloaded_ciobjarrayklass() { | |
327 return _unloaded_ciobjarrayklass; | |
328 } | |
329 static ciInstanceKlass* unloaded_ciinstance_klass() { | |
330 return _unloaded_ciinstance_klass; | |
331 } | |
332 | |
333 ciKlass* find_system_klass(ciSymbol* klass_name); | |
334 // Note: To find a class from its name string, use ciSymbol::make, | |
335 // but consider adding to vmSymbols.hpp instead. | |
336 | |
337 // Use this to make a holder for non-perm compile time constants. | |
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338 // The resulting array is guaranteed to satisfy "can_be_constant". |
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339 ciArray* make_system_array(GrowableArray<ciObject*>* objects); |
0 | 340 |
341 // converts the ciKlass* representing the holder of a method into a | |
342 // ciInstanceKlass*. This is needed since the holder of a method in | |
343 // the bytecodes could be an array type. Basically this converts | |
344 // array types into java/lang/Object and other types stay as they are. | |
345 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass); | |
346 | |
347 // Return the machine-level offset of o, which must be an element of a. | |
348 // This may be used to form constant-loading expressions in lieu of simpler encodings. | |
349 int array_element_offset_in_bytes(ciArray* a, ciObject* o); | |
350 | |
351 // Access to the compile-lifetime allocation arena. | |
352 Arena* arena() { return _arena; } | |
353 | |
354 // What is the current compilation environment? | |
355 static ciEnv* current() { return CompilerThread::current()->env(); } | |
356 | |
357 // Overload with current thread argument | |
358 static ciEnv* current(CompilerThread *thread) { return thread->env(); } | |
359 | |
360 // Per-compiler data. (Used by C2 to publish the Compile* pointer.) | |
361 void* compiler_data() { return _compiler_data; } | |
362 void set_compiler_data(void* x) { _compiler_data = x; } | |
363 | |
364 // Notice that a method has been inlined in the current compile; | |
365 // used only for statistics. | |
366 void notice_inlined_method(ciMethod* method); | |
367 | |
368 // Total number of bytecodes in inlined methods in this compile | |
369 int num_inlined_bytecodes() const; | |
370 | |
371 // Output stream for logging compilation info. | |
372 CompileLog* log() { return _log; } | |
373 void set_log(CompileLog* log) { _log = log; } | |
374 | |
375 // Check for changes to the system dictionary during compilation | |
376 bool system_dictionary_modification_counter_changed(); | |
377 | |
378 void record_failure(const char* reason); | |
379 void record_method_not_compilable(const char* reason, bool all_tiers = true); | |
380 void record_out_of_memory_failure(); | |
381 }; |