Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.hpp @ 14717:aa1a43bfdf4e
make HotSpotResolvedJavaMethod leaner
author | twisti |
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date | Fri, 21 Mar 2014 14:26:58 -0700 |
parents | d8041d695d19 |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2013, 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 bool _jvmti_can_pop_frame; |
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73 |
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74 // Cache DTrace flags |
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75 bool _dtrace_extended_probes; |
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76 bool _dtrace_monitor_probes; |
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77 bool _dtrace_method_probes; |
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78 bool _dtrace_alloc_probes; |
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79 |
0 | 80 // Distinguished instances of certain ciObjects.. |
81 static ciObject* _null_object_instance; | |
82 | |
1142 | 83 #define WK_KLASS_DECL(name, ignore_s, ignore_o) static ciInstanceKlass* _##name; |
84 WK_KLASSES_DO(WK_KLASS_DECL) | |
85 #undef WK_KLASS_DECL | |
0 | 86 |
87 static ciSymbol* _unloaded_cisymbol; | |
88 static ciInstanceKlass* _unloaded_ciinstance_klass; | |
89 static ciObjArrayKlass* _unloaded_ciobjarrayklass; | |
90 | |
91 static jobject _ArrayIndexOutOfBoundsException_handle; | |
92 static jobject _ArrayStoreException_handle; | |
93 static jobject _ClassCastException_handle; | |
94 | |
95 ciInstance* _NullPointerException_instance; | |
96 ciInstance* _ArithmeticException_instance; | |
97 ciInstance* _ArrayIndexOutOfBoundsException_instance; | |
98 ciInstance* _ArrayStoreException_instance; | |
99 ciInstance* _ClassCastException_instance; | |
100 | |
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101 ciInstance* _the_null_string; // The Java string "null" |
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102 ciInstance* _the_min_jint_string; // The Java string "-2147483648" |
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103 |
0 | 104 // Look up a klass by name from a particular class loader (the accessor's). |
105 // If require_local, result must be defined in that class loader, or NULL. | |
106 // If !require_local, a result from remote class loader may be reported, | |
107 // if sufficient class loader constraints exist such that initiating | |
108 // a class loading request from the given loader is bound to return | |
109 // the class defined in the remote loader (or throw an error). | |
110 // | |
111 // Return an unloaded klass if !require_local and no class at all is found. | |
112 // | |
113 // The CI treats a klass as loaded if it is consistently defined in | |
114 // another loader, even if it hasn't yet been loaded in all loaders | |
115 // that could potentially see it via delegation. | |
116 ciKlass* get_klass_by_name(ciKlass* accessing_klass, | |
117 ciSymbol* klass_name, | |
118 bool require_local); | |
119 | |
120 // Constant pool access. | |
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121 ciKlass* get_klass_by_index(constantPoolHandle cpool, |
0 | 122 int klass_index, |
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123 bool& is_accessible, |
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124 ciInstanceKlass* loading_klass); |
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125 ciConstant get_constant_by_index(constantPoolHandle cpool, |
1602 | 126 int pool_index, int cache_index, |
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127 ciInstanceKlass* accessor); |
0 | 128 ciField* get_field_by_index(ciInstanceKlass* loading_klass, |
129 int field_index); | |
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130 ciMethod* get_method_by_index(constantPoolHandle cpool, |
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131 int method_index, Bytecodes::Code bc, |
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132 ciInstanceKlass* loading_klass); |
0 | 133 |
134 // Implementation methods for loading and constant pool access. | |
135 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass, | |
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136 constantPoolHandle cpool, |
0 | 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, |
1602 | 144 int pool_index, int cache_index, |
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145 ciInstanceKlass* loading_klass); |
0 | 146 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass, |
147 int field_index); | |
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148 ciMethod* get_method_by_index_impl(constantPoolHandle cpool, |
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149 int method_index, Bytecodes::Code bc, |
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150 ciInstanceKlass* loading_klass); |
0 | 151 |
152 // Helper methods | |
153 bool check_klass_accessibility(ciKlass* accessing_klass, | |
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154 Klass* resolved_klass); |
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155 Method* lookup_method(InstanceKlass* accessor, |
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156 InstanceKlass* holder, |
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157 Symbol* name, |
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158 Symbol* sig, |
0 | 159 Bytecodes::Code bc); |
160 | |
161 // Get a ciObject from the object factory. Ensures uniqueness | |
162 // of ciObjects. | |
163 ciObject* get_object(oop o) { | |
164 if (o == NULL) { | |
165 return _null_object_instance; | |
166 } else { | |
167 return _factory->get(o); | |
168 } | |
169 } | |
170 | |
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171 ciSymbol* get_symbol(Symbol* o) { |
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172 if (o == NULL) { |
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173 ShouldNotReachHere(); |
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174 return NULL; |
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175 } else { |
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176 return _factory->get_symbol(o); |
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177 } |
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178 } |
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179 |
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180 ciMetadata* get_metadata(Metadata* o) { |
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181 if (o == NULL) { |
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182 return NULL; |
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183 } else { |
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184 return _factory->get_metadata(o); |
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185 } |
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186 } |
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187 |
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188 ciInstance* get_instance(oop o) { |
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189 if (o == NULL) return NULL; |
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190 return get_object(o)->as_instance(); |
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191 } |
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192 ciObjArrayKlass* get_obj_array_klass(Klass* o) { |
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193 if (o == NULL) return NULL; |
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194 return get_metadata(o)->as_obj_array_klass(); |
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195 } |
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196 ciTypeArrayKlass* get_type_array_klass(Klass* o) { |
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197 if (o == NULL) return NULL; |
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198 return get_metadata(o)->as_type_array_klass(); |
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199 } |
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200 ciKlass* get_klass(Klass* o) { |
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201 if (o == NULL) return NULL; |
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202 return get_metadata(o)->as_klass(); |
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203 } |
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204 ciInstanceKlass* get_instance_klass(Klass* o) { |
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205 if (o == NULL) return NULL; |
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206 return get_metadata(o)->as_instance_klass(); |
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207 } |
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208 ciMethod* get_method(Method* o) { |
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209 if (o == NULL) return NULL; |
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210 return get_metadata(o)->as_method(); |
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211 } |
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212 ciMethodData* get_method_data(MethodData* o) { |
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213 if (o == NULL) return NULL; |
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214 return get_metadata(o)->as_method_data(); |
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215 } |
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216 |
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217 ciMethod* get_method_from_handle(Method* method); |
0 | 218 |
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219 ciInstance* get_or_create_exception(jobject& handle, Symbol* name); |
0 | 220 |
221 // Get a ciMethod representing either an unfound method or | |
222 // a method with an unloaded holder. Ensures uniqueness of | |
223 // the result. | |
224 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
225 ciSymbol* name, | |
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226 ciSymbol* signature, |
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227 ciInstanceKlass* accessor) { |
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228 return _factory->get_unloaded_method(holder, name, signature, accessor); |
0 | 229 } |
230 | |
231 // Get a ciKlass representing an unloaded klass. | |
232 // Ensures uniqueness of the result. | |
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233 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, |
0 | 234 ciSymbol* name) { |
235 return _factory->get_unloaded_klass(accessing_klass, name, true); | |
236 } | |
237 | |
1602 | 238 // Get a ciKlass representing an unloaded klass mirror. |
239 // Result is not necessarily unique, but will be unloaded. | |
240 ciInstance* get_unloaded_klass_mirror(ciKlass* type) { | |
241 return _factory->get_unloaded_klass_mirror(type); | |
242 } | |
243 | |
244 // Get a ciInstance representing an unresolved method handle constant. | |
245 ciInstance* get_unloaded_method_handle_constant(ciKlass* holder, | |
246 ciSymbol* name, | |
247 ciSymbol* signature, | |
248 int ref_kind) { | |
249 return _factory->get_unloaded_method_handle_constant(holder, name, signature, ref_kind); | |
250 } | |
251 | |
252 // Get a ciInstance representing an unresolved method type constant. | |
253 ciInstance* get_unloaded_method_type_constant(ciSymbol* signature) { | |
254 return _factory->get_unloaded_method_type_constant(signature); | |
255 } | |
256 | |
0 | 257 // See if we already have an unloaded klass for the given name |
258 // or return NULL if not. | |
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259 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) { |
0 | 260 return _factory->get_unloaded_klass(accessing_klass, name, false); |
261 } | |
262 | |
263 // Get a ciReturnAddress corresponding to the given bci. | |
264 // Ensures uniqueness of the result. | |
265 ciReturnAddress* get_return_address(int bci) { | |
266 return _factory->get_return_address(bci); | |
267 } | |
268 | |
269 // Get a ciMethodData representing the methodData for a method | |
270 // with none. | |
271 ciMethodData* get_empty_methodData() { | |
272 return _factory->get_empty_methodData(); | |
273 } | |
274 | |
275 // General utility : get a buffer of some required length. | |
276 // Used in symbol creation. | |
277 char* name_buffer(int req_len); | |
278 | |
279 // Is this thread currently in the VM state? | |
280 static bool is_in_vm(); | |
281 | |
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282 // Helper routine for determining the validity of a compilation with |
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283 // respect to method dependencies (e.g. concurrent class loading). |
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284 void validate_compile_task_dependencies(ciMethod* target); |
0 | 285 |
286 public: | |
287 enum { | |
288 MethodCompilable, | |
289 MethodCompilable_not_at_tier, | |
290 MethodCompilable_never | |
291 }; | |
292 | |
293 ciEnv(CompileTask* task, int system_dictionary_modification_counter); | |
294 // Used only during initialization of the ci | |
295 ciEnv(Arena* arena); | |
296 ~ciEnv(); | |
297 | |
298 OopRecorder* oop_recorder() { return _oop_recorder; } | |
299 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; } | |
300 | |
301 DebugInformationRecorder* debug_info() { return _debug_info; } | |
302 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; } | |
303 | |
304 Dependencies* dependencies() { return _dependencies; } | |
305 void set_dependencies(Dependencies* d) { _dependencies = d; } | |
306 | |
307 // This is true if the compilation is not going to produce code. | |
308 // (It is reasonable to retry failed compilations.) | |
309 bool failing() { return _failure_reason != NULL; } | |
310 | |
311 // Reason this compilation is failing, such as "too many basic blocks". | |
312 const char* failure_reason() { return _failure_reason; } | |
313 | |
314 // Return state of appropriate compilability | |
315 int compilable() { return _compilable; } | |
316 | |
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317 const char* retry_message() const { |
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318 switch (_compilable) { |
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319 case ciEnv::MethodCompilable_not_at_tier: |
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320 return "retry at different tier"; |
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321 case ciEnv::MethodCompilable_never: |
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322 return "not retryable"; |
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323 case ciEnv::MethodCompilable: |
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324 return NULL; |
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325 default: |
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326 ShouldNotReachHere(); |
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327 return NULL; |
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328 } |
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329 } |
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330 |
0 | 331 bool break_at_compile() { return _break_at_compile; } |
332 void set_break_at_compile(bool z) { _break_at_compile = z; } | |
333 | |
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334 // Cache Jvmti state |
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335 void cache_jvmti_state(); |
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336 bool jvmti_state_changed() const; |
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337 bool should_retain_local_variables() const; |
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338 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; } |
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339 bool jvmti_can_post_on_exceptions() const { return _jvmti_can_post_on_exceptions; } |
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340 |
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341 // Cache DTrace flags |
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342 void cache_dtrace_flags(); |
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343 bool dtrace_extended_probes() const { return _dtrace_extended_probes; } |
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344 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; } |
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345 bool dtrace_method_probes() const { return _dtrace_method_probes; } |
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346 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; } |
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347 |
0 | 348 // The compiler task which has created this env. |
349 // May be useful to find out compile_id, comp_level, etc. | |
350 CompileTask* task() { return _task; } | |
351 // Handy forwards to the task: | |
352 int comp_level(); // task()->comp_level() | |
353 uint compile_id(); // task()->compile_id() | |
354 | |
355 // Register the result of a compilation. | |
356 void register_method(ciMethod* target, | |
357 int entry_bci, | |
358 CodeOffsets* offsets, | |
359 int orig_pc_offset, | |
360 CodeBuffer* code_buffer, | |
361 int frame_words, | |
362 OopMapSet* oop_map_set, | |
363 ExceptionHandlerTable* handler_table, | |
364 ImplicitExceptionTable* inc_table, | |
365 AbstractCompiler* compiler, | |
366 int comp_level, | |
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367 bool has_unsafe_access, |
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368 bool has_wide_vectors); |
0 | 369 |
370 | |
371 // Access to certain well known ciObjects. | |
1142 | 372 #define WK_KLASS_FUNC(name, ignore_s, ignore_o) \ |
373 ciInstanceKlass* name() { \ | |
374 return _##name;\ | |
0 | 375 } |
1142 | 376 WK_KLASSES_DO(WK_KLASS_FUNC) |
377 #undef WK_KLASS_FUNC | |
378 | |
0 | 379 ciInstance* NullPointerException_instance() { |
380 assert(_NullPointerException_instance != NULL, "initialization problem"); | |
381 return _NullPointerException_instance; | |
382 } | |
383 ciInstance* ArithmeticException_instance() { | |
384 assert(_ArithmeticException_instance != NULL, "initialization problem"); | |
385 return _ArithmeticException_instance; | |
386 } | |
387 | |
388 // Lazy constructors: | |
389 ciInstance* ArrayIndexOutOfBoundsException_instance(); | |
390 ciInstance* ArrayStoreException_instance(); | |
391 ciInstance* ClassCastException_instance(); | |
392 | |
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393 ciInstance* the_null_string(); |
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394 ciInstance* the_min_jint_string(); |
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395 |
0 | 396 static ciSymbol* unloaded_cisymbol() { |
397 return _unloaded_cisymbol; | |
398 } | |
399 static ciObjArrayKlass* unloaded_ciobjarrayklass() { | |
400 return _unloaded_ciobjarrayklass; | |
401 } | |
402 static ciInstanceKlass* unloaded_ciinstance_klass() { | |
403 return _unloaded_ciinstance_klass; | |
404 } | |
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405 ciInstance* unloaded_ciinstance(); |
0 | 406 |
407 ciKlass* find_system_klass(ciSymbol* klass_name); | |
408 // Note: To find a class from its name string, use ciSymbol::make, | |
409 // but consider adding to vmSymbols.hpp instead. | |
410 | |
411 // converts the ciKlass* representing the holder of a method into a | |
412 // ciInstanceKlass*. This is needed since the holder of a method in | |
413 // the bytecodes could be an array type. Basically this converts | |
414 // array types into java/lang/Object and other types stay as they are. | |
415 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass); | |
416 | |
417 // Return the machine-level offset of o, which must be an element of a. | |
418 // This may be used to form constant-loading expressions in lieu of simpler encodings. | |
419 int array_element_offset_in_bytes(ciArray* a, ciObject* o); | |
420 | |
421 // Access to the compile-lifetime allocation arena. | |
422 Arena* arena() { return _arena; } | |
423 | |
424 // What is the current compilation environment? | |
425 static ciEnv* current() { return CompilerThread::current()->env(); } | |
426 | |
427 // Overload with current thread argument | |
428 static ciEnv* current(CompilerThread *thread) { return thread->env(); } | |
429 | |
430 // Per-compiler data. (Used by C2 to publish the Compile* pointer.) | |
431 void* compiler_data() { return _compiler_data; } | |
432 void set_compiler_data(void* x) { _compiler_data = x; } | |
433 | |
434 // Notice that a method has been inlined in the current compile; | |
435 // used only for statistics. | |
436 void notice_inlined_method(ciMethod* method); | |
437 | |
438 // Total number of bytecodes in inlined methods in this compile | |
439 int num_inlined_bytecodes() const; | |
440 | |
441 // Output stream for logging compilation info. | |
442 CompileLog* log() { return _log; } | |
443 void set_log(CompileLog* log) { _log = log; } | |
444 | |
445 // Check for changes to the system dictionary during compilation | |
446 bool system_dictionary_modification_counter_changed(); | |
447 | |
448 void record_failure(const char* reason); | |
449 void record_method_not_compilable(const char* reason, bool all_tiers = true); | |
450 void record_out_of_memory_failure(); | |
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451 |
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452 // RedefineClasses support |
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453 void metadata_do(void f(Metadata*)) { _factory->metadata_do(f); } |
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454 |
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455 // Dump the compilation replay data for the ciEnv to the stream. |
14232 | 456 void dump_replay_data(int compile_id); |
457 void dump_inline_data(int compile_id); | |
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458 void dump_replay_data(outputStream* out); |
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459 void dump_replay_data_unsafe(outputStream* out); |
14232 | 460 void dump_compile_data(outputStream* out); |
0 | 461 }; |
1972 | 462 |
463 #endif // SHARE_VM_CI_CIENV_HPP |