Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.hpp @ 6948:e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 12 Nov 2012 23:14:12 +0100 |
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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 | |
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48 #ifdef GRAAL |
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49 friend class CodeInstaller; |
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50 #endif |
0 | 51 private: |
52 Arena* _arena; // Alias for _ciEnv_arena except in init_shared_objects() | |
53 Arena _ciEnv_arena; | |
54 int _system_dictionary_modification_counter; | |
55 ciObjectFactory* _factory; | |
56 OopRecorder* _oop_recorder; | |
57 DebugInformationRecorder* _debug_info; | |
58 Dependencies* _dependencies; | |
59 const char* _failure_reason; | |
60 int _compilable; | |
61 bool _break_at_compile; | |
62 int _num_inlined_bytecodes; | |
63 CompileTask* _task; // faster access to CompilerThread::task | |
64 CompileLog* _log; // faster access to CompilerThread::log | |
65 void* _compiler_data; // compiler-specific stuff, if any | |
66 | |
67 char* _name_buffer; | |
68 int _name_buffer_len; | |
69 | |
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70 // Cache Jvmti state |
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71 bool _jvmti_can_hotswap_or_post_breakpoint; |
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72 bool _jvmti_can_access_local_variables; |
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73 bool _jvmti_can_post_on_exceptions; |
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74 |
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75 // Cache DTrace flags |
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76 bool _dtrace_extended_probes; |
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77 bool _dtrace_monitor_probes; |
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78 bool _dtrace_method_probes; |
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79 bool _dtrace_alloc_probes; |
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80 |
0 | 81 // Distinguished instances of certain ciObjects.. |
82 static ciObject* _null_object_instance; | |
83 | |
1142 | 84 #define WK_KLASS_DECL(name, ignore_s, ignore_o) static ciInstanceKlass* _##name; |
85 WK_KLASSES_DO(WK_KLASS_DECL) | |
86 #undef WK_KLASS_DECL | |
0 | 87 |
88 static ciSymbol* _unloaded_cisymbol; | |
89 static ciInstanceKlass* _unloaded_ciinstance_klass; | |
90 static ciObjArrayKlass* _unloaded_ciobjarrayklass; | |
91 | |
92 static jobject _ArrayIndexOutOfBoundsException_handle; | |
93 static jobject _ArrayStoreException_handle; | |
94 static jobject _ClassCastException_handle; | |
95 | |
96 ciInstance* _NullPointerException_instance; | |
97 ciInstance* _ArithmeticException_instance; | |
98 ciInstance* _ArrayIndexOutOfBoundsException_instance; | |
99 ciInstance* _ArrayStoreException_instance; | |
100 ciInstance* _ClassCastException_instance; | |
101 | |
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102 ciInstance* _the_null_string; // The Java string "null" |
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103 ciInstance* _the_min_jint_string; // The Java string "-2147483648" |
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104 |
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105 public: |
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106 |
0 | 107 // Look up a klass by name from a particular class loader (the accessor's). |
108 // If require_local, result must be defined in that class loader, or NULL. | |
109 // If !require_local, a result from remote class loader may be reported, | |
110 // if sufficient class loader constraints exist such that initiating | |
111 // a class loading request from the given loader is bound to return | |
112 // the class defined in the remote loader (or throw an error). | |
113 // | |
114 // Return an unloaded klass if !require_local and no class at all is found. | |
115 // | |
116 // The CI treats a klass as loaded if it is consistently defined in | |
117 // another loader, even if it hasn't yet been loaded in all loaders | |
118 // that could potentially see it via delegation. | |
119 ciKlass* get_klass_by_name(ciKlass* accessing_klass, | |
120 ciSymbol* klass_name, | |
121 bool require_local); | |
122 | |
123 // Constant pool access. | |
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124 ciKlass* get_klass_by_index(constantPoolHandle cpool, |
0 | 125 int klass_index, |
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126 bool& is_accessible, |
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127 ciInstanceKlass* loading_klass); |
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128 ciConstant get_constant_by_index(constantPoolHandle cpool, |
1602 | 129 int pool_index, int cache_index, |
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130 ciInstanceKlass* accessor); |
0 | 131 ciField* get_field_by_index(ciInstanceKlass* loading_klass, |
132 int field_index); | |
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133 ciMethod* get_method_by_index(constantPoolHandle cpool, |
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134 int method_index, Bytecodes::Code bc, |
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135 ciInstanceKlass* loading_klass); |
0 | 136 |
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137 private: |
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138 |
0 | 139 // Implementation methods for loading and constant pool access. |
140 ciKlass* get_klass_by_name_impl(ciKlass* accessing_klass, | |
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141 constantPoolHandle cpool, |
0 | 142 ciSymbol* klass_name, |
143 bool require_local); | |
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144 ciKlass* get_klass_by_index_impl(constantPoolHandle cpool, |
0 | 145 int klass_index, |
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146 bool& is_accessible, |
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147 ciInstanceKlass* loading_klass); |
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148 ciConstant get_constant_by_index_impl(constantPoolHandle cpool, |
1602 | 149 int pool_index, int cache_index, |
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150 ciInstanceKlass* loading_klass); |
0 | 151 ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass, |
152 int field_index); | |
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153 ciMethod* get_method_by_index_impl(constantPoolHandle cpool, |
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154 int method_index, Bytecodes::Code bc, |
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155 ciInstanceKlass* loading_klass); |
0 | 156 |
157 // Helper methods | |
158 bool check_klass_accessibility(ciKlass* accessing_klass, | |
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159 Klass* resolved_klass); |
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160 Method* lookup_method(InstanceKlass* accessor, |
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161 InstanceKlass* holder, |
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162 Symbol* name, |
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163 Symbol* sig, |
0 | 164 Bytecodes::Code bc); |
165 | |
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166 public: |
0 | 167 // Get a ciObject from the object factory. Ensures uniqueness |
168 // of ciObjects. | |
169 ciObject* get_object(oop o) { | |
170 if (o == NULL) { | |
171 return _null_object_instance; | |
172 } else { | |
173 return _factory->get(o); | |
174 } | |
175 } | |
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176 private: |
0 | 177 |
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178 ciSymbol* get_symbol(Symbol* o) { |
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179 if (o == NULL) { |
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180 ShouldNotReachHere(); |
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181 return NULL; |
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182 } else { |
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183 return _factory->get_symbol(o); |
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184 } |
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185 } |
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186 |
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187 ciMetadata* get_metadata(Metadata* o) { |
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188 if (o == NULL) { |
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189 return NULL; |
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190 } else { |
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191 return _factory->get_metadata(o); |
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192 } |
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193 } |
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194 |
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195 ciInstance* get_instance(oop o) { |
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196 if (o == NULL) return NULL; |
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197 return get_object(o)->as_instance(); |
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198 } |
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199 ciObjArrayKlass* get_obj_array_klass(Klass* o) { |
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200 if (o == NULL) return NULL; |
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201 return get_metadata(o)->as_obj_array_klass(); |
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202 } |
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203 ciTypeArrayKlass* get_type_array_klass(Klass* o) { |
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204 if (o == NULL) return NULL; |
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205 return get_metadata(o)->as_type_array_klass(); |
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206 } |
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207 ciKlass* get_klass(Klass* o) { |
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208 if (o == NULL) return NULL; |
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209 return get_metadata(o)->as_klass(); |
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210 } |
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211 ciInstanceKlass* get_instance_klass(Klass* o) { |
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212 if (o == NULL) return NULL; |
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213 return get_metadata(o)->as_instance_klass(); |
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214 } |
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215 ciMethod* get_method(Method* o) { |
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216 if (o == NULL) return NULL; |
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217 return get_metadata(o)->as_method(); |
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218 } |
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219 ciMethodData* get_method_data(MethodData* o) { |
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220 if (o == NULL) return NULL; |
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221 return get_metadata(o)->as_method_data(); |
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222 } |
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223 |
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224 ciMethod* get_method_from_handle(Method* method); |
0 | 225 |
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226 ciInstance* get_or_create_exception(jobject& handle, Symbol* name); |
0 | 227 |
228 // Get a ciMethod representing either an unfound method or | |
229 // a method with an unloaded holder. Ensures uniqueness of | |
230 // the result. | |
231 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
232 ciSymbol* name, | |
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233 ciSymbol* signature, |
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234 ciInstanceKlass* accessor) { |
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235 return _factory->get_unloaded_method(holder, name, signature, accessor); |
0 | 236 } |
237 | |
238 // Get a ciKlass representing an unloaded klass. | |
239 // Ensures uniqueness of the result. | |
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240 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, |
0 | 241 ciSymbol* name) { |
242 return _factory->get_unloaded_klass(accessing_klass, name, true); | |
243 } | |
244 | |
1602 | 245 // Get a ciKlass representing an unloaded klass mirror. |
246 // Result is not necessarily unique, but will be unloaded. | |
247 ciInstance* get_unloaded_klass_mirror(ciKlass* type) { | |
248 return _factory->get_unloaded_klass_mirror(type); | |
249 } | |
250 | |
251 // Get a ciInstance representing an unresolved method handle constant. | |
252 ciInstance* get_unloaded_method_handle_constant(ciKlass* holder, | |
253 ciSymbol* name, | |
254 ciSymbol* signature, | |
255 int ref_kind) { | |
256 return _factory->get_unloaded_method_handle_constant(holder, name, signature, ref_kind); | |
257 } | |
258 | |
259 // Get a ciInstance representing an unresolved method type constant. | |
260 ciInstance* get_unloaded_method_type_constant(ciSymbol* signature) { | |
261 return _factory->get_unloaded_method_type_constant(signature); | |
262 } | |
263 | |
0 | 264 // See if we already have an unloaded klass for the given name |
265 // or return NULL if not. | |
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266 ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) { |
0 | 267 return _factory->get_unloaded_klass(accessing_klass, name, false); |
268 } | |
269 | |
270 // Get a ciReturnAddress corresponding to the given bci. | |
271 // Ensures uniqueness of the result. | |
272 ciReturnAddress* get_return_address(int bci) { | |
273 return _factory->get_return_address(bci); | |
274 } | |
275 | |
276 // Get a ciMethodData representing the methodData for a method | |
277 // with none. | |
278 ciMethodData* get_empty_methodData() { | |
279 return _factory->get_empty_methodData(); | |
280 } | |
281 | |
282 // General utility : get a buffer of some required length. | |
283 // Used in symbol creation. | |
284 char* name_buffer(int req_len); | |
285 | |
286 // Is this thread currently in the VM state? | |
287 static bool is_in_vm(); | |
288 | |
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289 // Helper routine for determining the validity of a compilation with |
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290 // respect to method dependencies (e.g. concurrent class loading). |
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291 void validate_compile_task_dependencies(ciMethod* target); |
0 | 292 |
293 public: | |
294 enum { | |
295 MethodCompilable, | |
296 MethodCompilable_not_at_tier, | |
297 MethodCompilable_never | |
298 }; | |
299 | |
300 ciEnv(CompileTask* task, int system_dictionary_modification_counter); | |
301 // Used only during initialization of the ci | |
302 ciEnv(Arena* arena); | |
303 ~ciEnv(); | |
304 | |
305 OopRecorder* oop_recorder() { return _oop_recorder; } | |
306 void set_oop_recorder(OopRecorder* r) { _oop_recorder = r; } | |
307 | |
308 DebugInformationRecorder* debug_info() { return _debug_info; } | |
309 void set_debug_info(DebugInformationRecorder* i) { _debug_info = i; } | |
310 | |
311 Dependencies* dependencies() { return _dependencies; } | |
312 void set_dependencies(Dependencies* d) { _dependencies = d; } | |
313 | |
314 // This is true if the compilation is not going to produce code. | |
315 // (It is reasonable to retry failed compilations.) | |
316 bool failing() { return _failure_reason != NULL; } | |
317 | |
318 // Reason this compilation is failing, such as "too many basic blocks". | |
319 const char* failure_reason() { return _failure_reason; } | |
320 | |
321 // Return state of appropriate compilability | |
322 int compilable() { return _compilable; } | |
323 | |
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324 const char* retry_message() const { |
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325 switch (_compilable) { |
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326 case ciEnv::MethodCompilable_not_at_tier: |
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327 return "retry at different tier"; |
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328 case ciEnv::MethodCompilable_never: |
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329 return "not retryable"; |
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330 case ciEnv::MethodCompilable: |
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331 return NULL; |
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332 default: |
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333 ShouldNotReachHere(); |
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334 return NULL; |
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335 } |
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336 } |
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337 |
0 | 338 bool break_at_compile() { return _break_at_compile; } |
339 void set_break_at_compile(bool z) { _break_at_compile = z; } | |
340 | |
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341 // Cache Jvmti state |
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342 void cache_jvmti_state(); |
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343 bool jvmti_can_hotswap_or_post_breakpoint() const { return _jvmti_can_hotswap_or_post_breakpoint; } |
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344 bool jvmti_can_access_local_variables() const { return _jvmti_can_access_local_variables; } |
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345 bool jvmti_can_post_on_exceptions() const { return _jvmti_can_post_on_exceptions; } |
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346 |
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347 // Cache DTrace flags |
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348 void cache_dtrace_flags(); |
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349 bool dtrace_extended_probes() const { return _dtrace_extended_probes; } |
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350 bool dtrace_monitor_probes() const { return _dtrace_monitor_probes; } |
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351 bool dtrace_method_probes() const { return _dtrace_method_probes; } |
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352 bool dtrace_alloc_probes() const { return _dtrace_alloc_probes; } |
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353 |
0 | 354 // The compiler task which has created this env. |
355 // May be useful to find out compile_id, comp_level, etc. | |
356 CompileTask* task() { return _task; } | |
357 // Handy forwards to the task: | |
358 int comp_level(); // task()->comp_level() | |
359 uint compile_id(); // task()->compile_id() | |
360 | |
361 // Register the result of a compilation. | |
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362 nmethod* register_method(ciMethod* target, |
0 | 363 int entry_bci, |
364 CodeOffsets* offsets, | |
365 int orig_pc_offset, | |
366 CodeBuffer* code_buffer, | |
367 int frame_words, | |
368 OopMapSet* oop_map_set, | |
369 ExceptionHandlerTable* handler_table, | |
370 ImplicitExceptionTable* inc_table, | |
371 AbstractCompiler* compiler, | |
372 int comp_level, | |
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373 bool has_unsafe_access, |
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374 bool has_wide_vectors); |
0 | 375 |
376 | |
377 // Access to certain well known ciObjects. | |
1142 | 378 #define WK_KLASS_FUNC(name, ignore_s, ignore_o) \ |
379 ciInstanceKlass* name() { \ | |
380 return _##name;\ | |
0 | 381 } |
1142 | 382 WK_KLASSES_DO(WK_KLASS_FUNC) |
383 #undef WK_KLASS_FUNC | |
384 | |
0 | 385 ciInstance* NullPointerException_instance() { |
386 assert(_NullPointerException_instance != NULL, "initialization problem"); | |
387 return _NullPointerException_instance; | |
388 } | |
389 ciInstance* ArithmeticException_instance() { | |
390 assert(_ArithmeticException_instance != NULL, "initialization problem"); | |
391 return _ArithmeticException_instance; | |
392 } | |
393 | |
394 // Lazy constructors: | |
395 ciInstance* ArrayIndexOutOfBoundsException_instance(); | |
396 ciInstance* ArrayStoreException_instance(); | |
397 ciInstance* ClassCastException_instance(); | |
398 | |
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399 ciInstance* the_null_string(); |
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400 ciInstance* the_min_jint_string(); |
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401 |
0 | 402 static ciSymbol* unloaded_cisymbol() { |
403 return _unloaded_cisymbol; | |
404 } | |
405 static ciObjArrayKlass* unloaded_ciobjarrayklass() { | |
406 return _unloaded_ciobjarrayklass; | |
407 } | |
408 static ciInstanceKlass* unloaded_ciinstance_klass() { | |
409 return _unloaded_ciinstance_klass; | |
410 } | |
411 | |
412 ciKlass* find_system_klass(ciSymbol* klass_name); | |
413 // Note: To find a class from its name string, use ciSymbol::make, | |
414 // but consider adding to vmSymbols.hpp instead. | |
415 | |
416 // converts the ciKlass* representing the holder of a method into a | |
417 // ciInstanceKlass*. This is needed since the holder of a method in | |
418 // the bytecodes could be an array type. Basically this converts | |
419 // array types into java/lang/Object and other types stay as they are. | |
420 static ciInstanceKlass* get_instance_klass_for_declared_method_holder(ciKlass* klass); | |
421 | |
422 // Return the machine-level offset of o, which must be an element of a. | |
423 // This may be used to form constant-loading expressions in lieu of simpler encodings. | |
424 int array_element_offset_in_bytes(ciArray* a, ciObject* o); | |
425 | |
426 // Access to the compile-lifetime allocation arena. | |
427 Arena* arena() { return _arena; } | |
428 | |
429 // What is the current compilation environment? | |
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430 static ciEnv* current() { return JavaThread::current()->env(); } |
0 | 431 |
432 // Overload with current thread argument | |
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433 static ciEnv* current(JavaThread *thread) { return thread->env(); } |
0 | 434 |
435 // Per-compiler data. (Used by C2 to publish the Compile* pointer.) | |
436 void* compiler_data() { return _compiler_data; } | |
437 void set_compiler_data(void* x) { _compiler_data = x; } | |
438 | |
439 // Notice that a method has been inlined in the current compile; | |
440 // used only for statistics. | |
441 void notice_inlined_method(ciMethod* method); | |
442 | |
443 // Total number of bytecodes in inlined methods in this compile | |
444 int num_inlined_bytecodes() const; | |
445 | |
446 // Output stream for logging compilation info. | |
447 CompileLog* log() { return _log; } | |
448 void set_log(CompileLog* log) { _log = log; } | |
449 | |
450 // Check for changes to the system dictionary during compilation | |
451 bool system_dictionary_modification_counter_changed(); | |
452 | |
453 void record_failure(const char* reason); | |
454 void record_method_not_compilable(const char* reason, bool all_tiers = true); | |
455 void record_out_of_memory_failure(); | |
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456 |
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457 // RedefineClasses support |
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458 void metadata_do(void f(Metadata*)) { _factory->metadata_do(f); } |
0 | 459 }; |
1972 | 460 |
461 #endif // SHARE_VM_CI_CIENV_HPP |