Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.hpp @ 4990:2551ebf25ff9
slightly prefer inlining within loops
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Mon, 27 Feb 2012 19:15:30 -0800 |
parents | 33df1aeaebbf |
children | c38f13903fdf |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, 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 ciKlassKlass* _klass_klass_instance; | |
83 static ciInstanceKlassKlass* _instance_klass_klass_instance; | |
84 static ciTypeArrayKlassKlass* _type_array_klass_klass_instance; | |
85 static ciObjArrayKlassKlass* _obj_array_klass_klass_instance; | |
86 | |
1142 | 87 #define WK_KLASS_DECL(name, ignore_s, ignore_o) static ciInstanceKlass* _##name; |
88 WK_KLASSES_DO(WK_KLASS_DECL) | |
89 #undef WK_KLASS_DECL | |
0 | 90 |
91 static ciSymbol* _unloaded_cisymbol; | |
92 static ciInstanceKlass* _unloaded_ciinstance_klass; | |
93 static ciObjArrayKlass* _unloaded_ciobjarrayklass; | |
94 | |
95 static jobject _ArrayIndexOutOfBoundsException_handle; | |
96 static jobject _ArrayStoreException_handle; | |
97 static jobject _ClassCastException_handle; | |
98 | |
99 ciInstance* _NullPointerException_instance; | |
100 ciInstance* _ArithmeticException_instance; | |
101 ciInstance* _ArrayIndexOutOfBoundsException_instance; | |
102 ciInstance* _ArrayStoreException_instance; | |
103 ciInstance* _ClassCastException_instance; | |
104 | |
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105 ciInstance* _the_null_string; // The Java string "null" |
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106 ciInstance* _the_min_jint_string; // The Java string "-2147483648" |
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107 |
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108 public: |
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109 |
0 | 110 // Look up a klass by name from a particular class loader (the accessor's). |
111 // If require_local, result must be defined in that class loader, or NULL. | |
112 // If !require_local, a result from remote class loader may be reported, | |
113 // if sufficient class loader constraints exist such that initiating | |
114 // a class loading request from the given loader is bound to return | |
115 // the class defined in the remote loader (or throw an error). | |
116 // | |
117 // Return an unloaded klass if !require_local and no class at all is found. | |
118 // | |
119 // The CI treats a klass as loaded if it is consistently defined in | |
120 // another loader, even if it hasn't yet been loaded in all loaders | |
121 // that could potentially see it via delegation. | |
122 ciKlass* get_klass_by_name(ciKlass* accessing_klass, | |
123 ciSymbol* klass_name, | |
124 bool require_local); | |
125 | |
126 // Constant pool access. | |
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127 ciKlass* get_klass_by_index(constantPoolHandle cpool, |
0 | 128 int klass_index, |
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129 bool& is_accessible, |
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130 ciInstanceKlass* loading_klass); |
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131 ciConstant get_constant_by_index(constantPoolHandle cpool, |
1602 | 132 int pool_index, int cache_index, |
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133 ciInstanceKlass* accessor); |
0 | 134 ciField* get_field_by_index(ciInstanceKlass* loading_klass, |
135 int field_index); | |
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136 ciMethod* get_method_by_index(constantPoolHandle cpool, |
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137 int method_index, Bytecodes::Code bc, |
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138 ciInstanceKlass* loading_klass); |
0 | 139 |
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140 private: |
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141 |
0 | 142 // Implementation methods for loading and constant pool access. |
143 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass, | |
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144 constantPoolHandle cpool, |
0 | 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, |
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161 ciInstanceKlass* accessor); |
0 | 162 |
163 // Helper methods | |
164 bool check_klass_accessibility(ciKlass* accessing_klass, | |
165 klassOop resolved_klassOop); | |
166 methodOop lookup_method(instanceKlass* accessor, | |
167 instanceKlass* holder, | |
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168 Symbol* name, |
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169 Symbol* sig, |
0 | 170 Bytecodes::Code bc); |
171 | |
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172 public: |
0 | 173 // Get a ciObject from the object factory. Ensures uniqueness |
174 // of ciObjects. | |
175 ciObject* get_object(oop o) { | |
176 if (o == NULL) { | |
177 return _null_object_instance; | |
178 } else { | |
179 return _factory->get(o); | |
180 } | |
181 } | |
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182 private: |
0 | 183 |
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184 ciSymbol* get_symbol(Symbol* o) { |
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185 if (o == NULL) { |
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186 ShouldNotReachHere(); |
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187 return NULL; |
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188 } else { |
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189 return _factory->get_symbol(o); |
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190 } |
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191 } |
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192 |
0 | 193 ciMethod* get_method_from_handle(jobject method); |
194 | |
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195 ciInstance* get_or_create_exception(jobject& handle, Symbol* name); |
0 | 196 |
197 // Get a ciMethod representing either an unfound method or | |
198 // a method with an unloaded holder. Ensures uniqueness of | |
199 // the result. | |
200 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
201 ciSymbol* name, | |
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202 ciSymbol* signature, |
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203 ciInstanceKlass* accessor) { |
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204 return _factory->get_unloaded_method(holder, name, signature, accessor); |
0 | 205 } |
206 | |
207 // Get a ciKlass representing an unloaded klass. | |
208 // Ensures uniqueness of the result. | |
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209 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, |
0 | 210 ciSymbol* name) { |
211 return _factory->get_unloaded_klass(accessing_klass, name, true); | |
212 } | |
213 | |
1602 | 214 // Get a ciKlass representing an unloaded klass mirror. |
215 // Result is not necessarily unique, but will be unloaded. | |
216 ciInstance* get_unloaded_klass_mirror(ciKlass* type) { | |
217 return _factory->get_unloaded_klass_mirror(type); | |
218 } | |
219 | |
220 // Get a ciInstance representing an unresolved method handle constant. | |
221 ciInstance* get_unloaded_method_handle_constant(ciKlass* holder, | |
222 ciSymbol* name, | |
223 ciSymbol* signature, | |
224 int ref_kind) { | |
225 return _factory->get_unloaded_method_handle_constant(holder, name, signature, ref_kind); | |
226 } | |
227 | |
228 // Get a ciInstance representing an unresolved method type constant. | |
229 ciInstance* get_unloaded_method_type_constant(ciSymbol* signature) { | |
230 return _factory->get_unloaded_method_type_constant(signature); | |
231 } | |
232 | |
0 | 233 // See if we already have an unloaded klass for the given name |
234 // or return NULL if not. | |
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235 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) { |
0 | 236 return _factory->get_unloaded_klass(accessing_klass, name, false); |
237 } | |
238 | |
239 // Get a ciReturnAddress corresponding to the given bci. | |
240 // Ensures uniqueness of the result. | |
241 ciReturnAddress* get_return_address(int bci) { | |
242 return _factory->get_return_address(bci); | |
243 } | |
244 | |
245 // Get a ciMethodData representing the methodData for a method | |
246 // with none. | |
247 ciMethodData* get_empty_methodData() { | |
248 return _factory->get_empty_methodData(); | |
249 } | |
250 | |
251 // General utility : get a buffer of some required length. | |
252 // Used in symbol creation. | |
253 char* name_buffer(int req_len); | |
254 | |
255 // Is this thread currently in the VM state? | |
256 static bool is_in_vm(); | |
257 | |
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258 // Helper routine for determining the validity of a compilation with |
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259 // respect to method dependencies (e.g. concurrent class loading). |
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260 void validate_compile_task_dependencies(ciMethod* target); |
0 | 261 |
262 public: | |
263 enum { | |
264 MethodCompilable, | |
265 MethodCompilable_not_at_tier, | |
266 MethodCompilable_never | |
267 }; | |
268 | |
269 ciEnv(CompileTask* task, int system_dictionary_modification_counter); | |
270 // Used only during initialization of the ci | |
271 ciEnv(Arena* arena); | |
272 ~ciEnv(); | |
273 | |
274 OopRecorder* oop_recorder() { return _oop_recorder; } | |
275 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; } | |
276 | |
277 DebugInformationRecorder* debug_info() { return _debug_info; } | |
278 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; } | |
279 | |
280 Dependencies* dependencies() { return _dependencies; } | |
281 void set_dependencies(Dependencies* d) { _dependencies = d; } | |
282 | |
283 // This is true if the compilation is not going to produce code. | |
284 // (It is reasonable to retry failed compilations.) | |
285 bool failing() { return _failure_reason != NULL; } | |
286 | |
287 // Reason this compilation is failing, such as "too many basic blocks". | |
288 const char* failure_reason() { return _failure_reason; } | |
289 | |
290 // Return state of appropriate compilability | |
291 int compilable() { return _compilable; } | |
292 | |
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293 const char* retry_message() const { |
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294 switch (_compilable) { |
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295 case ciEnv::MethodCompilable_not_at_tier: |
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296 return "retry at different tier"; |
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297 case ciEnv::MethodCompilable_never: |
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298 return "not retryable"; |
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299 case ciEnv::MethodCompilable: |
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300 return NULL; |
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301 default: |
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302 ShouldNotReachHere(); |
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303 return NULL; |
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304 } |
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305 } |
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306 |
0 | 307 bool break_at_compile() { return _break_at_compile; } |
308 void set_break_at_compile(bool z) { _break_at_compile = z; } | |
309 | |
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310 // Cache Jvmti state |
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311 void cache_jvmti_state(); |
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312 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; } |
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313 bool jvmti_can_access_local_variables() const { return _jvmti_can_access_local_variables; } |
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314 bool jvmti_can_post_on_exceptions() const { return _jvmti_can_post_on_exceptions; } |
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315 |
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316 // Cache DTrace flags |
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317 void cache_dtrace_flags(); |
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318 bool dtrace_extended_probes() const { return _dtrace_extended_probes; } |
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319 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; } |
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320 bool dtrace_method_probes() const { return _dtrace_method_probes; } |
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321 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; } |
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322 |
0 | 323 // The compiler task which has created this env. |
324 // May be useful to find out compile_id, comp_level, etc. | |
325 CompileTask* task() { return _task; } | |
326 // Handy forwards to the task: | |
327 int comp_level(); // task()->comp_level() | |
328 uint compile_id(); // task()->compile_id() | |
329 | |
330 // Register the result of a compilation. | |
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331 nmethod* register_method(ciMethod* target, |
0 | 332 int entry_bci, |
333 CodeOffsets* offsets, | |
334 int orig_pc_offset, | |
335 CodeBuffer* code_buffer, | |
336 int frame_words, | |
337 OopMapSet* oop_map_set, | |
338 ExceptionHandlerTable* handler_table, | |
339 ImplicitExceptionTable* inc_table, | |
340 AbstractCompiler* compiler, | |
341 int comp_level, | |
3899 | 342 bool has_unsafe_access); |
0 | 343 |
344 | |
345 // Access to certain well known ciObjects. | |
1142 | 346 #define WK_KLASS_FUNC(name, ignore_s, ignore_o) \ |
347 ciInstanceKlass* name() { \ | |
348 return _##name;\ | |
0 | 349 } |
1142 | 350 WK_KLASSES_DO(WK_KLASS_FUNC) |
351 #undef WK_KLASS_FUNC | |
352 | |
0 | 353 ciInstance* NullPointerException_instance() { |
354 assert(_NullPointerException_instance != NULL, "initialization problem"); | |
355 return _NullPointerException_instance; | |
356 } | |
357 ciInstance* ArithmeticException_instance() { | |
358 assert(_ArithmeticException_instance != NULL, "initialization problem"); | |
359 return _ArithmeticException_instance; | |
360 } | |
361 | |
362 // Lazy constructors: | |
363 ciInstance* ArrayIndexOutOfBoundsException_instance(); | |
364 ciInstance* ArrayStoreException_instance(); | |
365 ciInstance* ClassCastException_instance(); | |
366 | |
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367 ciInstance* the_null_string(); |
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368 ciInstance* the_min_jint_string(); |
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369 |
0 | 370 static ciSymbol* unloaded_cisymbol() { |
371 return _unloaded_cisymbol; | |
372 } | |
373 static ciObjArrayKlass* unloaded_ciobjarrayklass() { | |
374 return _unloaded_ciobjarrayklass; | |
375 } | |
376 static ciInstanceKlass* unloaded_ciinstance_klass() { | |
377 return _unloaded_ciinstance_klass; | |
378 } | |
379 | |
380 ciKlass* find_system_klass(ciSymbol* klass_name); | |
381 // Note: To find a class from its name string, use ciSymbol::make, | |
382 // but consider adding to vmSymbols.hpp instead. | |
383 | |
384 // Use this to make a holder for non-perm compile time constants. | |
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385 // The resulting array is guaranteed to satisfy "can_be_constant". |
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386 ciArray* make_system_array(GrowableArray<ciObject*>* objects); |
0 | 387 |
388 // converts the ciKlass* representing the holder of a method into a | |
389 // ciInstanceKlass*. This is needed since the holder of a method in | |
390 // the bytecodes could be an array type. Basically this converts | |
391 // array types into java/lang/Object and other types stay as they are. | |
392 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass); | |
393 | |
394 // Return the machine-level offset of o, which must be an element of a. | |
395 // This may be used to form constant-loading expressions in lieu of simpler encodings. | |
396 int array_element_offset_in_bytes(ciArray* a, ciObject* o); | |
397 | |
398 // Access to the compile-lifetime allocation arena. | |
399 Arena* arena() { return _arena; } | |
400 | |
401 // What is the current compilation environment? | |
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402 static ciEnv* current() { return JavaThread::current()->env(); } |
0 | 403 |
404 // Overload with current thread argument | |
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405 static ciEnv* current(JavaThread *thread) { return thread->env(); } |
0 | 406 |
407 // Per-compiler data. (Used by C2 to publish the Compile* pointer.) | |
408 void* compiler_data() { return _compiler_data; } | |
409 void set_compiler_data(void* x) { _compiler_data = x; } | |
410 | |
411 // Notice that a method has been inlined in the current compile; | |
412 // used only for statistics. | |
413 void notice_inlined_method(ciMethod* method); | |
414 | |
415 // Total number of bytecodes in inlined methods in this compile | |
416 int num_inlined_bytecodes() const; | |
417 | |
418 // Output stream for logging compilation info. | |
419 CompileLog* log() { return _log; } | |
420 void set_log(CompileLog* log) { _log = log; } | |
421 | |
422 // Check for changes to the system dictionary during compilation | |
423 bool system_dictionary_modification_counter_changed(); | |
424 | |
425 void record_failure(const char* reason); | |
426 void record_method_not_compilable(const char* reason, bool all_tiers = true); | |
427 void record_out_of_memory_failure(); | |
428 }; | |
1972 | 429 |
430 #endif // SHARE_VM_CI_CIENV_HPP |