Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 3555:22d11b3bc561
Various hacks to be able to install machine code from a Java thread.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 24 Aug 2011 01:05:02 +0200 |
parents | be4ca325525a |
children | 5e9645341ec3 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2011, 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 #include "precompiled.hpp" |
26 #include "ci/ciConstant.hpp" | |
27 #include "ci/ciEnv.hpp" | |
28 #include "ci/ciField.hpp" | |
29 #include "ci/ciInstance.hpp" | |
30 #include "ci/ciInstanceKlass.hpp" | |
31 #include "ci/ciInstanceKlassKlass.hpp" | |
32 #include "ci/ciMethod.hpp" | |
33 #include "ci/ciNullObject.hpp" | |
34 #include "ci/ciObjArrayKlassKlass.hpp" | |
35 #include "ci/ciTypeArrayKlassKlass.hpp" | |
36 #include "ci/ciUtilities.hpp" | |
37 #include "classfile/systemDictionary.hpp" | |
38 #include "classfile/vmSymbols.hpp" | |
39 #include "code/scopeDesc.hpp" | |
40 #include "compiler/compileBroker.hpp" | |
41 #include "compiler/compileLog.hpp" | |
42 #include "compiler/compilerOracle.hpp" | |
43 #include "gc_interface/collectedHeap.inline.hpp" | |
44 #include "interpreter/linkResolver.hpp" | |
45 #include "memory/allocation.inline.hpp" | |
46 #include "memory/oopFactory.hpp" | |
47 #include "memory/universe.inline.hpp" | |
48 #include "oops/methodDataOop.hpp" | |
49 #include "oops/objArrayKlass.hpp" | |
50 #include "oops/oop.inline.hpp" | |
51 #include "oops/oop.inline2.hpp" | |
52 #include "prims/jvmtiExport.hpp" | |
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53 #include "prims/methodHandleWalk.hpp" |
1972 | 54 #include "runtime/init.hpp" |
55 #include "runtime/reflection.hpp" | |
56 #include "runtime/sharedRuntime.hpp" | |
57 #include "utilities/dtrace.hpp" | |
58 #ifdef COMPILER1 | |
59 #include "c1/c1_Runtime1.hpp" | |
60 #endif | |
61 #ifdef COMPILER2 | |
62 #include "opto/runtime.hpp" | |
63 #endif | |
0 | 64 |
65 // ciEnv | |
66 // | |
67 // This class is the top level broker for requests from the compiler | |
68 // to the VM. | |
69 | |
70 ciObject* ciEnv::_null_object_instance; | |
71 ciMethodKlass* ciEnv::_method_klass_instance; | |
72 ciKlassKlass* ciEnv::_klass_klass_instance; | |
73 ciInstanceKlassKlass* ciEnv::_instance_klass_klass_instance; | |
74 ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance; | |
75 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance; | |
76 | |
1142 | 77 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
78 WK_KLASSES_DO(WK_KLASS_DEFN) | |
79 #undef WK_KLASS_DEFN | |
0 | 80 |
81 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
82 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
83 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
84 | |
85 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
86 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
87 jobject ciEnv::_ClassCastException_handle = NULL; | |
88 | |
89 #ifndef PRODUCT | |
90 static bool firstEnv = true; | |
91 #endif /* PRODUCT */ | |
92 | |
93 // ------------------------------------------------------------------ | |
94 // ciEnv::ciEnv | |
95 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
96 VM_ENTRY_MARK; | |
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97 CompilerThread* compiler_thread = CompilerThread::current(); |
0 | 98 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. |
99 thread->set_env(this); | |
100 assert(ciEnv::current() == this, "sanity"); | |
101 | |
102 _oop_recorder = NULL; | |
103 _debug_info = NULL; | |
104 _dependencies = NULL; | |
105 _failure_reason = NULL; | |
106 _compilable = MethodCompilable; | |
107 _break_at_compile = false; | |
108 _compiler_data = NULL; | |
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109 //#ifndef PRODUCT |
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110 // assert(!firstEnv, "not initialized properly"); |
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111 //#endif /* !PRODUCT */ |
0 | 112 |
113 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
114 _num_inlined_bytecodes = 0; | |
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115 assert(task == NULL || compiler_thread->task() == task, "sanity"); |
0 | 116 _task = task; |
117 _log = NULL; | |
118 | |
119 // Temporary buffer for creating symbols and such. | |
120 _name_buffer = NULL; | |
121 _name_buffer_len = 0; | |
122 | |
123 _arena = &_ciEnv_arena; | |
124 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
125 | |
126 // Preload commonly referenced system ciObjects. | |
127 | |
128 // During VM initialization, these instances have not yet been created. | |
129 // Assertions ensure that these instances are not accessed before | |
130 // their initialization. | |
131 | |
132 assert(Universe::is_fully_initialized(), "should be complete"); | |
133 | |
134 oop o = Universe::null_ptr_exception_instance(); | |
135 assert(o != NULL, "should have been initialized"); | |
136 _NullPointerException_instance = get_object(o)->as_instance(); | |
137 o = Universe::arithmetic_exception_instance(); | |
138 assert(o != NULL, "should have been initialized"); | |
139 _ArithmeticException_instance = get_object(o)->as_instance(); | |
140 | |
141 _ArrayIndexOutOfBoundsException_instance = NULL; | |
142 _ArrayStoreException_instance = NULL; | |
143 _ClassCastException_instance = NULL; | |
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144 _the_null_string = NULL; |
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145 _the_min_jint_string = NULL; |
0 | 146 } |
147 | |
148 ciEnv::ciEnv(Arena* arena) { | |
149 ASSERT_IN_VM; | |
150 | |
151 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
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152 JavaThread* current_thread = JavaThread::current(); |
0 | 153 assert(current_thread->env() == NULL, "must be"); |
154 current_thread->set_env(this); | |
155 assert(ciEnv::current() == this, "sanity"); | |
156 | |
157 _oop_recorder = NULL; | |
158 _debug_info = NULL; | |
159 _dependencies = NULL; | |
160 _failure_reason = NULL; | |
161 _compilable = MethodCompilable_never; | |
162 _break_at_compile = false; | |
163 _compiler_data = NULL; | |
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164 //#ifndef PRODUCT |
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165 // assert(firstEnv, "must be first"); |
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166 // firstEnv = false; |
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167 //#endif /* !PRODUCT */ |
0 | 168 |
169 _system_dictionary_modification_counter = 0; | |
170 _num_inlined_bytecodes = 0; | |
171 _task = NULL; | |
172 _log = NULL; | |
173 | |
174 // Temporary buffer for creating symbols and such. | |
175 _name_buffer = NULL; | |
176 _name_buffer_len = 0; | |
177 | |
178 _arena = arena; | |
179 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
180 | |
181 // Preload commonly referenced system ciObjects. | |
182 | |
183 // During VM initialization, these instances have not yet been created. | |
184 // Assertions ensure that these instances are not accessed before | |
185 // their initialization. | |
186 | |
187 assert(Universe::is_fully_initialized(), "must be"); | |
188 | |
189 oop o = Universe::null_ptr_exception_instance(); | |
190 assert(o != NULL, "should have been initialized"); | |
191 _NullPointerException_instance = get_object(o)->as_instance(); | |
192 o = Universe::arithmetic_exception_instance(); | |
193 assert(o != NULL, "should have been initialized"); | |
194 _ArithmeticException_instance = get_object(o)->as_instance(); | |
195 | |
196 _ArrayIndexOutOfBoundsException_instance = NULL; | |
197 _ArrayStoreException_instance = NULL; | |
198 _ClassCastException_instance = NULL; | |
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199 _the_null_string = NULL; |
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200 _the_min_jint_string = NULL; |
0 | 201 } |
202 | |
203 ciEnv::~ciEnv() { | |
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204 _factory->cleanup(); |
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205 JavaThread* current_thread = JavaThread::current(); |
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206 _factory->remove_symbols(); |
0 | 207 current_thread->set_env(NULL); |
208 } | |
209 | |
210 // ------------------------------------------------------------------ | |
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211 // Cache Jvmti state |
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212 void ciEnv::cache_jvmti_state() { |
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213 VM_ENTRY_MARK; |
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214 // Get Jvmti capabilities under lock to get consistant values. |
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215 MutexLocker mu(JvmtiThreadState_lock); |
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216 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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217 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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218 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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219 } |
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220 |
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221 // ------------------------------------------------------------------ |
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222 // Cache DTrace flags |
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223 void ciEnv::cache_dtrace_flags() { |
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224 // Need lock? |
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225 _dtrace_extended_probes = ExtendedDTraceProbes; |
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226 if (_dtrace_extended_probes) { |
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227 _dtrace_monitor_probes = true; |
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228 _dtrace_method_probes = true; |
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229 _dtrace_alloc_probes = true; |
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230 } else { |
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231 _dtrace_monitor_probes = DTraceMonitorProbes; |
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232 _dtrace_method_probes = DTraceMethodProbes; |
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233 _dtrace_alloc_probes = DTraceAllocProbes; |
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234 } |
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235 } |
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236 |
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237 // ------------------------------------------------------------------ |
0 | 238 // helper for lazy exception creation |
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239 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { |
0 | 240 VM_ENTRY_MARK; |
241 if (handle == NULL) { | |
242 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
243 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); | |
244 jobject objh = NULL; | |
245 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
246 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); | |
247 if (!HAS_PENDING_EXCEPTION) | |
248 objh = JNIHandles::make_global(obj); | |
249 } | |
250 if (HAS_PENDING_EXCEPTION) { | |
251 CLEAR_PENDING_EXCEPTION; | |
252 } else { | |
253 handle = objh; | |
254 } | |
255 } | |
256 oop obj = JNIHandles::resolve(handle); | |
257 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
258 } | |
259 | |
260 // ------------------------------------------------------------------ | |
261 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc. | |
262 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
263 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
264 _ArrayIndexOutOfBoundsException_instance | |
265 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
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266 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
0 | 267 } |
268 return _ArrayIndexOutOfBoundsException_instance; | |
269 } | |
270 ciInstance* ciEnv::ArrayStoreException_instance() { | |
271 if (_ArrayStoreException_instance == NULL) { | |
272 _ArrayStoreException_instance | |
273 = get_or_create_exception(_ArrayStoreException_handle, | |
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274 vmSymbols::java_lang_ArrayStoreException()); |
0 | 275 } |
276 return _ArrayStoreException_instance; | |
277 } | |
278 ciInstance* ciEnv::ClassCastException_instance() { | |
279 if (_ClassCastException_instance == NULL) { | |
280 _ClassCastException_instance | |
281 = get_or_create_exception(_ClassCastException_handle, | |
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282 vmSymbols::java_lang_ClassCastException()); |
0 | 283 } |
284 return _ClassCastException_instance; | |
285 } | |
286 | |
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287 ciInstance* ciEnv::the_null_string() { |
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288 if (_the_null_string == NULL) { |
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289 VM_ENTRY_MARK; |
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290 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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291 } |
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292 return _the_null_string; |
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293 } |
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294 |
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295 ciInstance* ciEnv::the_min_jint_string() { |
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296 if (_the_min_jint_string == NULL) { |
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297 VM_ENTRY_MARK; |
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298 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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299 } |
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300 return _the_min_jint_string; |
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301 } |
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302 |
0 | 303 // ------------------------------------------------------------------ |
304 // ciEnv::get_method_from_handle | |
305 ciMethod* ciEnv::get_method_from_handle(jobject method) { | |
306 VM_ENTRY_MARK; | |
307 return get_object(JNIHandles::resolve(method))->as_method(); | |
308 } | |
309 | |
310 // ------------------------------------------------------------------ | |
311 // ciEnv::make_array | |
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312 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
0 | 313 VM_ENTRY_MARK; |
314 int length = objects->length(); | |
315 objArrayOop a = oopFactory::new_system_objArray(length, THREAD); | |
316 if (HAS_PENDING_EXCEPTION) { | |
317 CLEAR_PENDING_EXCEPTION; | |
318 record_out_of_memory_failure(); | |
319 return NULL; | |
320 } | |
321 for (int i = 0; i < length; i++) { | |
322 a->obj_at_put(i, objects->at(i)->get_oop()); | |
323 } | |
324 assert(a->is_perm(), ""); | |
325 return get_object(a)->as_array(); | |
326 } | |
327 | |
328 | |
329 // ------------------------------------------------------------------ | |
330 // ciEnv::array_element_offset_in_bytes | |
331 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
332 VM_ENTRY_MARK; | |
333 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
334 assert(a->is_objArray(), ""); | |
335 int length = a->length(); | |
336 oop o = o_h->get_oop(); | |
337 for (int i = 0; i < length; i++) { | |
338 if (a->obj_at(i) == o) return i; | |
339 } | |
340 return -1; | |
341 } | |
342 | |
343 | |
344 // ------------------------------------------------------------------ | |
345 // ciEnv::check_klass_accessiblity | |
346 // | |
347 // Note: the logic of this method should mirror the logic of | |
348 // constantPoolOopDesc::verify_constant_pool_resolve. | |
349 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, | |
350 klassOop resolved_klass) { | |
351 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { | |
352 return true; | |
353 } | |
354 if (accessing_klass->is_obj_array()) { | |
355 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); | |
356 } | |
357 if (!accessing_klass->is_instance_klass()) { | |
358 return true; | |
359 } | |
360 | |
361 if (resolved_klass->klass_part()->oop_is_objArray()) { | |
362 // Find the element klass, if this is an array. | |
363 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); | |
364 } | |
365 if (resolved_klass->klass_part()->oop_is_instance()) { | |
366 return Reflection::verify_class_access(accessing_klass->get_klassOop(), | |
367 resolved_klass, | |
368 true); | |
369 } | |
370 return true; | |
371 } | |
372 | |
373 // ------------------------------------------------------------------ | |
374 // ciEnv::get_klass_by_name_impl | |
375 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
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376 constantPoolHandle cpool, |
0 | 377 ciSymbol* name, |
378 bool require_local) { | |
379 ASSERT_IN_VM; | |
380 EXCEPTION_CONTEXT; | |
381 | |
382 // Now we need to check the SystemDictionary | |
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383 Symbol* sym = name->get_symbol(); |
0 | 384 if (sym->byte_at(0) == 'L' && |
385 sym->byte_at(sym->utf8_length()-1) == ';') { | |
386 // This is a name from a signature. Strip off the trimmings. | |
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387 // Call recursive to keep scope of strippedsym. |
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388 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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389 sym->utf8_length()-2, |
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390 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); |
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391 ciSymbol* strippedname = get_symbol(strippedsym); |
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392 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); |
0 | 393 } |
394 | |
395 // Check for prior unloaded klass. The SystemDictionary's answers | |
396 // can vary over time but the compiler needs consistency. | |
397 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
398 if (unloaded_klass != NULL) { | |
399 if (require_local) return NULL; | |
400 return unloaded_klass; | |
401 } | |
402 | |
403 Handle loader(THREAD, (oop)NULL); | |
404 Handle domain(THREAD, (oop)NULL); | |
405 if (accessing_klass != NULL) { | |
406 loader = Handle(THREAD, accessing_klass->loader()); | |
407 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
408 } | |
409 | |
410 // setup up the proper type to return on OOM | |
411 ciKlass* fail_type; | |
412 if (sym->byte_at(0) == '[') { | |
413 fail_type = _unloaded_ciobjarrayklass; | |
414 } else { | |
415 fail_type = _unloaded_ciinstance_klass; | |
416 } | |
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417 KlassHandle found_klass; |
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418 { |
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419 ttyUnlocker ttyul; // release tty lock to avoid ordering problems |
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420 MutexLocker ml(Compile_lock); |
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421 klassOop kls; |
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422 if (!require_local) { |
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423 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, |
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424 KILL_COMPILE_ON_FATAL_(fail_type)); |
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425 } else { |
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426 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, |
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427 KILL_COMPILE_ON_FATAL_(fail_type)); |
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428 } |
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429 found_klass = KlassHandle(THREAD, kls); |
0 | 430 } |
431 | |
432 // If we fail to find an array klass, look again for its element type. | |
433 // The element type may be available either locally or via constraints. | |
434 // In either case, if we can find the element type in the system dictionary, | |
435 // we must build an array type around it. The CI requires array klasses | |
436 // to be loaded if their element klasses are loaded, except when memory | |
437 // is exhausted. | |
438 if (sym->byte_at(0) == '[' && | |
439 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
440 // We have an unloaded array. | |
441 // Build it on the fly if the element class exists. | |
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442 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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443 sym->utf8_length()-1, |
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444 KILL_COMPILE_ON_FATAL_(fail_type)); |
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445 |
0 | 446 // Get element ciKlass recursively. |
447 ciKlass* elem_klass = | |
448 get_klass_by_name_impl(accessing_klass, | |
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449 cpool, |
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450 get_symbol(elem_sym), |
0 | 451 require_local); |
452 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
453 // Now make an array for it | |
454 return ciObjArrayKlass::make_impl(elem_klass); | |
455 } | |
456 } | |
457 | |
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458 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { |
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459 // Look inside the constant pool for pre-resolved class entries. |
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460 for (int i = cpool->length() - 1; i >= 1; i--) { |
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461 if (cpool->tag_at(i).is_klass()) { |
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462 klassOop kls = cpool->resolved_klass_at(i); |
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463 if (Klass::cast(kls)->name() == sym) { |
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464 found_klass = KlassHandle(THREAD, kls); |
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465 break; |
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466 } |
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467 } |
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468 } |
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469 } |
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470 |
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471 if (found_klass() != NULL) { |
0 | 472 // Found it. Build a CI handle. |
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473 return get_object(found_klass())->as_klass(); |
0 | 474 } |
475 | |
476 if (require_local) return NULL; | |
477 // Not yet loaded into the VM, or not governed by loader constraints. | |
478 // Make a CI representative for it. | |
479 return get_unloaded_klass(accessing_klass, name); | |
480 } | |
481 | |
482 // ------------------------------------------------------------------ | |
483 // ciEnv::get_klass_by_name | |
484 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
485 ciSymbol* klass_name, | |
486 bool require_local) { | |
487 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
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488 constantPoolHandle(), |
0 | 489 klass_name, |
490 require_local);) | |
491 } | |
492 | |
493 // ------------------------------------------------------------------ | |
494 // ciEnv::get_klass_by_index_impl | |
495 // | |
496 // Implementation of get_klass_by_index. | |
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497 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
0 | 498 int index, |
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499 bool& is_accessible, |
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500 ciInstanceKlass* accessor) { |
0 | 501 EXCEPTION_CONTEXT; |
502 KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); | |
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503 Symbol* klass_name = NULL; |
0 | 504 if (klass.is_null()) { |
505 // The klass has not been inserted into the constant pool. | |
506 // Try to look it up by name. | |
507 { | |
508 // We have to lock the cpool to keep the oop from being resolved | |
509 // while we are accessing it. | |
510 ObjectLocker ol(cpool, THREAD); | |
511 | |
512 constantTag tag = cpool->tag_at(index); | |
513 if (tag.is_klass()) { | |
514 // The klass has been inserted into the constant pool | |
515 // very recently. | |
516 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
517 } else if (tag.is_symbol()) { | |
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518 klass_name = cpool->symbol_at(index); |
0 | 519 } else { |
520 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
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521 klass_name = cpool->unresolved_klass_at(index); |
0 | 522 } |
523 } | |
524 } | |
525 | |
526 if (klass.is_null()) { | |
527 // Not found in constant pool. Use the name to do the lookup. | |
528 ciKlass* k = get_klass_by_name_impl(accessor, | |
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529 cpool, |
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530 get_symbol(klass_name), |
0 | 531 false); |
532 // Calculate accessibility the hard way. | |
533 if (!k->is_loaded()) { | |
534 is_accessible = false; | |
535 } else if (k->loader() != accessor->loader() && | |
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536 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { |
0 | 537 // Loaded only remotely. Not linked yet. |
538 is_accessible = false; | |
539 } else { | |
540 // Linked locally, and we must also check public/private, etc. | |
541 is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); | |
542 } | |
543 return k; | |
544 } | |
545 | |
546 // Check for prior unloaded klass. The SystemDictionary's answers | |
547 // can vary over time but the compiler needs consistency. | |
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548 ciSymbol* name = get_symbol(klass()->klass_part()->name()); |
0 | 549 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
550 if (unloaded_klass != NULL) { | |
551 is_accessible = false; | |
552 return unloaded_klass; | |
553 } | |
554 | |
555 // It is known to be accessible, since it was found in the constant pool. | |
556 is_accessible = true; | |
557 return get_object(klass())->as_klass(); | |
558 } | |
559 | |
560 // ------------------------------------------------------------------ | |
561 // ciEnv::get_klass_by_index | |
562 // | |
563 // Get a klass from the constant pool. | |
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564 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
0 | 565 int index, |
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566 bool& is_accessible, |
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567 ciInstanceKlass* accessor) { |
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568 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
0 | 569 } |
570 | |
571 // ------------------------------------------------------------------ | |
572 // ciEnv::get_constant_by_index_impl | |
573 // | |
574 // Implementation of get_constant_by_index(). | |
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575 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
1602 | 576 int pool_index, int cache_index, |
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577 ciInstanceKlass* accessor) { |
1602 | 578 bool ignore_will_link; |
0 | 579 EXCEPTION_CONTEXT; |
1602 | 580 int index = pool_index; |
581 if (cache_index >= 0) { | |
582 assert(index < 0, "only one kind of index at a time"); | |
583 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index); | |
584 index = cpc_entry->constant_pool_index(); | |
585 oop obj = cpc_entry->f1(); | |
586 if (obj != NULL) { | |
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587 assert(obj->is_instance() || obj->is_array(), "must be a Java reference"); |
1602 | 588 ciObject* ciobj = get_object(obj); |
589 return ciConstant(T_OBJECT, ciobj); | |
590 } | |
591 } | |
0 | 592 constantTag tag = cpool->tag_at(index); |
593 if (tag.is_int()) { | |
594 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
595 } else if (tag.is_long()) { | |
596 return ciConstant((jlong)cpool->long_at(index)); | |
597 } else if (tag.is_float()) { | |
598 return ciConstant((jfloat)cpool->float_at(index)); | |
599 } else if (tag.is_double()) { | |
600 return ciConstant((jdouble)cpool->double_at(index)); | |
601 } else if (tag.is_string() || tag.is_unresolved_string()) { | |
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602 oop string = NULL; |
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603 if (cpool->is_pseudo_string_at(index)) { |
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604 string = cpool->pseudo_string_at(index); |
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605 } else { |
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606 string = cpool->string_at(index, THREAD); |
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607 if (HAS_PENDING_EXCEPTION) { |
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608 CLEAR_PENDING_EXCEPTION; |
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609 record_out_of_memory_failure(); |
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610 return ciConstant(); |
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611 } |
0 | 612 } |
613 ciObject* constant = get_object(string); | |
614 assert (constant->is_instance(), "must be an instance, or not? "); | |
615 return ciConstant(T_OBJECT, constant); | |
616 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
617 // 4881222: allow ldc to take a class type | |
1602 | 618 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
0 | 619 if (HAS_PENDING_EXCEPTION) { |
620 CLEAR_PENDING_EXCEPTION; | |
621 record_out_of_memory_failure(); | |
622 return ciConstant(); | |
623 } | |
624 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
625 "must be an instance or array klass "); | |
1602 | 626 return ciConstant(T_OBJECT, klass->java_mirror()); |
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627 } else if (tag.is_object()) { |
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628 oop obj = cpool->object_at(index); |
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629 assert(obj->is_instance() || obj->is_array(), "must be a Java reference"); |
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630 ciObject* ciobj = get_object(obj); |
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631 return ciConstant(T_OBJECT, ciobj); |
1602 | 632 } else if (tag.is_method_type()) { |
633 // must execute Java code to link this CP entry into cache[i].f1 | |
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634 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); |
1602 | 635 ciObject* ciobj = get_unloaded_method_type_constant(signature); |
636 return ciConstant(T_OBJECT, ciobj); | |
637 } else if (tag.is_method_handle()) { | |
638 // must execute Java code to link this CP entry into cache[i].f1 | |
639 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
640 int callee_index = cpool->method_handle_klass_index_at(index); | |
641 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
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642 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); |
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643 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); |
1602 | 644 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
645 return ciConstant(T_OBJECT, ciobj); | |
0 | 646 } else { |
647 ShouldNotReachHere(); | |
648 return ciConstant(); | |
649 } | |
650 } | |
651 | |
652 // ------------------------------------------------------------------ | |
653 // ciEnv::get_constant_by_index | |
654 // | |
655 // Pull a constant out of the constant pool. How appropriate. | |
656 // | |
657 // Implementation note: this query is currently in no way cached. | |
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658 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
1602 | 659 int pool_index, int cache_index, |
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660 ciInstanceKlass* accessor) { |
1602 | 661 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
0 | 662 } |
663 | |
664 // ------------------------------------------------------------------ | |
665 // ciEnv::get_field_by_index_impl | |
666 // | |
667 // Implementation of get_field_by_index. | |
668 // | |
669 // Implementation note: the results of field lookups are cached | |
670 // in the accessor klass. | |
671 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
672 int index) { | |
673 ciConstantPoolCache* cache = accessor->field_cache(); | |
674 if (cache == NULL) { | |
675 ciField* field = new (arena()) ciField(accessor, index); | |
676 return field; | |
677 } else { | |
678 ciField* field = (ciField*)cache->get(index); | |
679 if (field == NULL) { | |
680 field = new (arena()) ciField(accessor, index); | |
681 cache->insert(index, field); | |
682 } | |
683 return field; | |
684 } | |
685 } | |
686 | |
687 // ------------------------------------------------------------------ | |
688 // ciEnv::get_field_by_index | |
689 // | |
690 // Get a field by index from a klass's constant pool. | |
691 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
692 int index) { | |
693 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
694 } | |
695 | |
696 // ------------------------------------------------------------------ | |
697 // ciEnv::lookup_method | |
698 // | |
699 // Perform an appropriate method lookup based on accessor, holder, | |
700 // name, signature, and bytecode. | |
701 methodOop ciEnv::lookup_method(instanceKlass* accessor, | |
702 instanceKlass* holder, | |
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703 Symbol* name, |
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704 Symbol* sig, |
0 | 705 Bytecodes::Code bc) { |
706 EXCEPTION_CONTEXT; | |
707 KlassHandle h_accessor(THREAD, accessor); | |
708 KlassHandle h_holder(THREAD, holder); | |
709 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
710 methodHandle dest_method; | |
711 switch (bc) { | |
712 case Bytecodes::_invokestatic: | |
713 dest_method = | |
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714 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); |
0 | 715 break; |
716 case Bytecodes::_invokespecial: | |
717 dest_method = | |
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718 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); |
0 | 719 break; |
720 case Bytecodes::_invokeinterface: | |
721 dest_method = | |
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722 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, |
0 | 723 h_accessor, true); |
724 break; | |
725 case Bytecodes::_invokevirtual: | |
726 dest_method = | |
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727 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, |
0 | 728 h_accessor, true); |
729 break; | |
730 default: ShouldNotReachHere(); | |
731 } | |
732 | |
733 return dest_method(); | |
734 } | |
735 | |
736 | |
737 // ------------------------------------------------------------------ | |
738 // ciEnv::get_method_by_index_impl | |
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739 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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740 int index, Bytecodes::Code bc, |
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741 ciInstanceKlass* accessor) { |
0 | 742 int holder_index = cpool->klass_ref_index_at(index); |
743 bool holder_is_accessible; | |
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744 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
0 | 745 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
746 | |
747 // Get the method's name and signature. | |
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748 Symbol* name_sym = cpool->name_ref_at(index); |
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749 Symbol* sig_sym = cpool->signature_ref_at(index); |
0 | 750 |
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751 if (cpool->has_preresolution() |
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752 || (holder == ciEnv::MethodHandle_klass() && |
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753 methodOopDesc::is_method_handle_invoke_name(name_sym))) { |
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754 // Short-circuit lookups for JSR 292-related call sites. |
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755 // That is, do not rely only on name-based lookups, because they may fail |
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756 // if the names are not resolvable in the boot class loader (7056328). |
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757 switch (bc) { |
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758 case Bytecodes::_invokevirtual: |
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759 case Bytecodes::_invokeinterface: |
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760 case Bytecodes::_invokespecial: |
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761 case Bytecodes::_invokestatic: |
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762 { |
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763 methodOop m = constantPoolOopDesc::method_at_if_loaded(cpool, index, bc); |
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764 if (m != NULL) { |
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765 return get_object(m)->as_method(); |
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766 } |
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767 } |
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768 } |
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769 } |
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770 |
0 | 771 if (holder_is_accessible) { // Our declared holder is loaded. |
772 instanceKlass* lookup = declared_holder->get_instanceKlass(); | |
773 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); | |
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774 if (m != NULL && |
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775 (bc == Bytecodes::_invokestatic |
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776 ? instanceKlass::cast(m->method_holder())->is_not_initialized() |
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777 : !instanceKlass::cast(m->method_holder())->is_loaded())) { |
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778 m = NULL; |
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779 } |
0 | 780 if (m != NULL) { |
781 // We found the method. | |
782 return get_object(m)->as_method(); | |
783 } | |
784 } | |
785 | |
786 // Either the declared holder was not loaded, or the method could | |
787 // not be found. Create a dummy ciMethod to represent the failed | |
788 // lookup. | |
789 | |
790 return get_unloaded_method(declared_holder, | |
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791 get_symbol(name_sym), |
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792 get_symbol(sig_sym)); |
0 | 793 } |
794 | |
795 | |
796 // ------------------------------------------------------------------ | |
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797 // ciEnv::get_fake_invokedynamic_method_impl |
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798 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
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799 int index, Bytecodes::Code bc) { |
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800 // Compare the following logic with InterpreterRuntime::resolve_invokedynamic. |
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801 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic"); |
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802 |
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803 bool is_resolved = cpool->cache()->main_entry_at(index)->is_resolved(bc); |
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804 if (is_resolved && cpool->cache()->secondary_entry_at(index)->is_f1_null()) |
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805 // FIXME: code generation could allow for null (unlinked) call site |
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806 is_resolved = false; |
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807 |
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808 // Call site might not be resolved yet. We could create a real invoker method from the |
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809 // compiler, but it is simpler to stop the code path here with an unlinked method. |
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810 if (!is_resolved) { |
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811 ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass(); |
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812 ciSymbol* sig_sym = get_symbol(cpool->signature_ref_at(index)); |
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813 return get_unloaded_method(mh_klass, ciSymbol::invokeExact_name(), sig_sym); |
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814 } |
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815 |
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816 // Get the invoker methodOop from the constant pool. |
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817 oop f1_value = cpool->cache()->main_entry_at(index)->f1(); |
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818 methodOop signature_invoker = (methodOop) f1_value; |
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819 assert(signature_invoker != NULL && signature_invoker->is_method() && signature_invoker->is_method_handle_invoke(), |
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820 "correct result from LinkResolver::resolve_invokedynamic"); |
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821 |
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822 return get_object(signature_invoker)->as_method(); |
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823 } |
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824 |
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825 |
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826 // ------------------------------------------------------------------ |
0 | 827 // ciEnv::get_instance_klass_for_declared_method_holder |
828 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
829 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
830 // instead of a ciInstanceKlass. For that case simply pretend that the | |
831 // declared holder is Object.clone since that's where the call will bottom out. | |
832 // A more correct fix would trickle out through many interfaces in CI, | |
833 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
834 // require checks to make sure the expected type was found. Given that this | |
835 // only occurs for clone() the more extensive fix seems like overkill so | |
836 // instead we simply smear the array type into Object. | |
837 if (method_holder->is_instance_klass()) { | |
838 return method_holder->as_instance_klass(); | |
839 } else if (method_holder->is_array_klass()) { | |
840 return current()->Object_klass(); | |
841 } else { | |
842 ShouldNotReachHere(); | |
843 } | |
844 return NULL; | |
845 } | |
846 | |
847 | |
848 // ------------------------------------------------------------------ | |
849 // ciEnv::get_method_by_index | |
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850 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
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851 int index, Bytecodes::Code bc, |
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852 ciInstanceKlass* accessor) { |
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853 if (bc == Bytecodes::_invokedynamic) { |
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854 GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc);) |
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855 } else { |
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856 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
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857 } |
0 | 858 } |
859 | |
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860 |
0 | 861 // ------------------------------------------------------------------ |
862 // ciEnv::name_buffer | |
863 char *ciEnv::name_buffer(int req_len) { | |
864 if (_name_buffer_len < req_len) { | |
865 if (_name_buffer == NULL) { | |
866 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
867 _name_buffer_len = req_len; | |
868 } else { | |
869 _name_buffer = | |
870 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
871 _name_buffer_len = req_len; | |
872 } | |
873 } | |
874 return _name_buffer; | |
875 } | |
876 | |
877 // ------------------------------------------------------------------ | |
878 // ciEnv::is_in_vm | |
879 bool ciEnv::is_in_vm() { | |
880 return JavaThread::current()->thread_state() == _thread_in_vm; | |
881 } | |
882 | |
883 bool ciEnv::system_dictionary_modification_counter_changed() { | |
884 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
885 } | |
886 | |
887 // ------------------------------------------------------------------ | |
888 // ciEnv::check_for_system_dictionary_modification | |
889 // Check for changes to the system dictionary during compilation | |
890 // class loads, evolution, breakpoints | |
891 void ciEnv::check_for_system_dictionary_modification(ciMethod* target) { | |
892 if (failing()) return; // no need for further checks | |
893 | |
894 // Dependencies must be checked when the system dictionary changes. | |
895 // If logging is enabled all violated dependences will be recorded in | |
896 // the log. In debug mode check dependencies even if the system | |
897 // dictionary hasn't changed to verify that no invalid dependencies | |
898 // were inserted. Any violated dependences in this case are dumped to | |
899 // the tty. | |
900 | |
901 bool counter_changed = system_dictionary_modification_counter_changed(); | |
902 bool test_deps = counter_changed; | |
903 DEBUG_ONLY(test_deps = true); | |
904 if (!test_deps) return; | |
905 | |
906 bool print_failures = false; | |
907 DEBUG_ONLY(print_failures = !counter_changed); | |
908 | |
909 bool keep_going = (print_failures || xtty != NULL); | |
910 | |
911 int violated = 0; | |
912 | |
913 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { | |
914 klassOop witness = deps.check_dependency(); | |
915 if (witness != NULL) { | |
916 ++violated; | |
917 if (print_failures) deps.print_dependency(witness, /*verbose=*/ true); | |
918 // If there's no log and we're not sanity-checking, we're done. | |
919 if (!keep_going) break; | |
920 } | |
921 } | |
922 | |
923 if (violated != 0) { | |
924 assert(counter_changed, "failed dependencies, but counter didn't change"); | |
925 record_failure("concurrent class loading"); | |
926 } | |
927 } | |
928 | |
929 // ------------------------------------------------------------------ | |
930 // ciEnv::register_method | |
931 void ciEnv::register_method(ciMethod* target, | |
932 int entry_bci, | |
933 CodeOffsets* offsets, | |
934 int orig_pc_offset, | |
935 CodeBuffer* code_buffer, | |
936 int frame_words, | |
937 OopMapSet* oop_map_set, | |
938 ExceptionHandlerTable* handler_table, | |
939 ImplicitExceptionTable* inc_table, | |
940 AbstractCompiler* compiler, | |
941 int comp_level, | |
942 bool has_debug_info, | |
943 bool has_unsafe_access) { | |
944 VM_ENTRY_MARK; | |
945 nmethod* nm = NULL; | |
946 { | |
947 // To prevent compile queue updates. | |
948 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
949 | |
950 // Prevent SystemDictionary::add_to_hierarchy from running | |
951 // and invalidating our dependencies until we install this method. | |
952 MutexLocker ml(Compile_lock); | |
953 | |
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954 // Change in Jvmti state may invalidate compilation. |
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955 if (!failing() && |
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956 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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957 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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958 (!jvmti_can_access_local_variables() && |
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959 JvmtiExport::can_access_local_variables()) || |
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960 (!jvmti_can_post_on_exceptions() && |
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961 JvmtiExport::can_post_on_exceptions()) )) { |
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962 record_failure("Jvmti state change invalidated dependencies"); |
0 | 963 } |
964 | |
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965 // Change in DTrace flags may invalidate compilation. |
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966 if (!failing() && |
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967 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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968 (!dtrace_method_probes() && DTraceMethodProbes) || |
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969 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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970 record_failure("DTrace flags change invalidated dependencies"); |
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971 } |
0 | 972 |
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973 if (!failing()) { |
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974 if (log() != NULL) { |
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975 // Log the dependencies which this compilation declares. |
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976 dependencies()->log_all_dependencies(); |
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977 } |
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978 |
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979 // Encode the dependencies now, so we can check them right away. |
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980 dependencies()->encode_content_bytes(); |
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981 |
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982 // Check for {class loads, evolution, breakpoints} during compilation |
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983 check_for_system_dictionary_modification(target); |
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984 } |
0 | 985 |
986 methodHandle method(THREAD, target->get_methodOop()); | |
987 | |
988 if (failing()) { | |
989 // While not a true deoptimization, it is a preemptive decompile. | |
990 methodDataOop mdo = method()->method_data(); | |
991 if (mdo != NULL) { | |
992 mdo->inc_decompile_count(); | |
993 } | |
994 | |
995 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
996 // If the code buffer is created on each compile attempt | |
997 // as in C2, then it must be freed. | |
998 code_buffer->free_blob(); | |
999 return; | |
1000 } | |
1001 | |
1002 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
1003 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
1004 | |
1005 nm = nmethod::new_nmethod(method, | |
1006 compile_id(), | |
1007 entry_bci, | |
1008 offsets, | |
1009 orig_pc_offset, | |
1010 debug_info(), dependencies(), code_buffer, | |
1011 frame_words, oop_map_set, | |
1012 handler_table, inc_table, | |
1013 compiler, comp_level); | |
1014 | |
1015 // Free codeBlobs | |
1016 code_buffer->free_blob(); | |
1017 | |
1018 // stress test 6243940 by immediately making the method | |
1019 // non-entrant behind the system's back. This has serious | |
1020 // side effects on the code cache and is not meant for | |
1021 // general stress testing | |
1022 if (nm != NULL && StressNonEntrant) { | |
1023 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1024 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
1025 SharedRuntime::get_handle_wrong_method_stub()); | |
1026 } | |
1027 | |
1028 if (nm == NULL) { | |
1029 // The CodeCache is full. Print out warning and disable compilation. | |
1030 record_failure("code cache is full"); | |
1202 | 1031 { |
1032 MutexUnlocker ml(Compile_lock); | |
1033 MutexUnlocker locker(MethodCompileQueue_lock); | |
1034 CompileBroker::handle_full_code_cache(); | |
0 | 1035 } |
1036 } else { | |
1037 NOT_PRODUCT(nm->set_has_debug_info(has_debug_info); ) | |
1038 nm->set_has_unsafe_access(has_unsafe_access); | |
1039 | |
1040 // Record successful registration. | |
1041 // (Put nm into the task handle *before* publishing to the Java heap.) | |
1042 if (task() != NULL) task()->set_code(nm); | |
1043 | |
1044 if (entry_bci == InvocationEntryBci) { | |
1783 | 1045 if (TieredCompilation) { |
1046 // If there is an old version we're done with it | |
1047 nmethod* old = method->code(); | |
1048 if (TraceMethodReplacement && old != NULL) { | |
1049 ResourceMark rm; | |
1050 char *method_name = method->name_and_sig_as_C_string(); | |
1051 tty->print_cr("Replacing method %s", method_name); | |
1052 } | |
1053 if (old != NULL ) { | |
1054 old->make_not_entrant(); | |
1055 } | |
0 | 1056 } |
1057 if (TraceNMethodInstalls ) { | |
1058 ResourceMark rm; | |
1059 char *method_name = method->name_and_sig_as_C_string(); | |
1060 ttyLocker ttyl; | |
1061 tty->print_cr("Installing method (%d) %s ", | |
1062 comp_level, | |
1063 method_name); | |
1064 } | |
1065 // Allow the code to be executed | |
1066 method->set_code(method, nm); | |
1067 } else { | |
1068 if (TraceNMethodInstalls ) { | |
1069 ResourceMark rm; | |
1070 char *method_name = method->name_and_sig_as_C_string(); | |
1071 ttyLocker ttyl; | |
1072 tty->print_cr("Installing osr method (%d) %s @ %d", | |
1073 comp_level, | |
1074 method_name, | |
1075 entry_bci); | |
1076 } | |
1077 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); | |
1078 | |
1079 } | |
1080 } | |
1081 } | |
1082 // JVMTI -- compiled method notification (must be done outside lock) | |
1083 if (nm != NULL) { | |
1084 nm->post_compiled_method_load_event(); | |
1085 } | |
1086 | |
1087 } | |
1088 | |
1089 | |
1090 // ------------------------------------------------------------------ | |
1091 // ciEnv::find_system_klass | |
1092 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
1093 VM_ENTRY_MARK; | |
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1094 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); |
0 | 1095 } |
1096 | |
1097 // ------------------------------------------------------------------ | |
1098 // ciEnv::comp_level | |
1099 int ciEnv::comp_level() { | |
1783 | 1100 if (task() == NULL) return CompLevel_highest_tier; |
0 | 1101 return task()->comp_level(); |
1102 } | |
1103 | |
1104 // ------------------------------------------------------------------ | |
1105 // ciEnv::compile_id | |
1106 uint ciEnv::compile_id() { | |
1107 if (task() == NULL) return 0; | |
1108 return task()->compile_id(); | |
1109 } | |
1110 | |
1111 // ------------------------------------------------------------------ | |
1112 // ciEnv::notice_inlined_method() | |
1113 void ciEnv::notice_inlined_method(ciMethod* method) { | |
1114 _num_inlined_bytecodes += method->code_size(); | |
1115 } | |
1116 | |
1117 // ------------------------------------------------------------------ | |
1118 // ciEnv::num_inlined_bytecodes() | |
1119 int ciEnv::num_inlined_bytecodes() const { | |
1120 return _num_inlined_bytecodes; | |
1121 } | |
1122 | |
1123 // ------------------------------------------------------------------ | |
1124 // ciEnv::record_failure() | |
1125 void ciEnv::record_failure(const char* reason) { | |
1126 if (log() != NULL) { | |
1127 log()->elem("failure reason='%s'", reason); | |
1128 } | |
1129 if (_failure_reason == NULL) { | |
1130 // Record the first failure reason. | |
1131 _failure_reason = reason; | |
1132 } | |
1133 } | |
1134 | |
1135 // ------------------------------------------------------------------ | |
1136 // ciEnv::record_method_not_compilable() | |
1137 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
1138 int new_compilable = | |
1139 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
1140 | |
1141 // Only note transitions to a worse state | |
1142 if (new_compilable > _compilable) { | |
1143 if (log() != NULL) { | |
1144 if (all_tiers) { | |
1145 log()->elem("method_not_compilable"); | |
1146 } else { | |
1147 log()->elem("method_not_compilable_at_tier"); | |
1148 } | |
1149 } | |
1150 _compilable = new_compilable; | |
1151 | |
1152 // Reset failure reason; this one is more important. | |
1153 _failure_reason = NULL; | |
1154 record_failure(reason); | |
1155 } | |
1156 } | |
1157 | |
1158 // ------------------------------------------------------------------ | |
1159 // ciEnv::record_out_of_memory_failure() | |
1160 void ciEnv::record_out_of_memory_failure() { | |
1161 // If memory is low, we stop compiling methods. | |
1162 record_method_not_compilable("out of memory"); | |
1163 } |