Mercurial > hg > truffle
annotate src/share/vm/ci/ciEnv.cpp @ 3756:c8f2186acf6d
7053520: JSR292: crash in invokedynamic with C1 using tiered and compressed oops
Reviewed-by: iveresov, never
author | twisti |
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date | Tue, 14 Jun 2011 12:25:05 -0700 |
parents | 08ccee2c4dbf |
children | 81d815b05abb |
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" | |
53 #include "runtime/init.hpp" | |
54 #include "runtime/reflection.hpp" | |
55 #include "runtime/sharedRuntime.hpp" | |
56 #include "utilities/dtrace.hpp" | |
57 #ifdef COMPILER1 | |
58 #include "c1/c1_Runtime1.hpp" | |
59 #endif | |
60 #ifdef COMPILER2 | |
61 #include "opto/runtime.hpp" | |
62 #endif | |
0 | 63 |
64 // ciEnv | |
65 // | |
66 // This class is the top level broker for requests from the compiler | |
67 // to the VM. | |
68 | |
69 ciObject* ciEnv::_null_object_instance; | |
70 ciMethodKlass* ciEnv::_method_klass_instance; | |
71 ciKlassKlass* ciEnv::_klass_klass_instance; | |
72 ciInstanceKlassKlass* ciEnv::_instance_klass_klass_instance; | |
73 ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance; | |
74 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance; | |
75 | |
1142 | 76 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
77 WK_KLASSES_DO(WK_KLASS_DEFN) | |
78 #undef WK_KLASS_DEFN | |
0 | 79 |
80 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
81 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
82 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
83 | |
84 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
85 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
86 jobject ciEnv::_ClassCastException_handle = NULL; | |
87 | |
88 #ifndef PRODUCT | |
89 static bool firstEnv = true; | |
90 #endif /* PRODUCT */ | |
91 | |
92 // ------------------------------------------------------------------ | |
93 // ciEnv::ciEnv | |
94 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
95 VM_ENTRY_MARK; | |
96 | |
97 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
98 thread->set_env(this); | |
99 assert(ciEnv::current() == this, "sanity"); | |
100 | |
101 _oop_recorder = NULL; | |
102 _debug_info = NULL; | |
103 _dependencies = NULL; | |
104 _failure_reason = NULL; | |
105 _compilable = MethodCompilable; | |
106 _break_at_compile = false; | |
107 _compiler_data = NULL; | |
108 #ifndef PRODUCT | |
109 assert(!firstEnv, "not initialized properly"); | |
110 #endif /* !PRODUCT */ | |
111 | |
112 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
113 _num_inlined_bytecodes = 0; | |
114 assert(task == NULL || thread->task() == task, "sanity"); | |
115 _task = task; | |
116 _log = NULL; | |
117 | |
118 // Temporary buffer for creating symbols and such. | |
119 _name_buffer = NULL; | |
120 _name_buffer_len = 0; | |
121 | |
122 _arena = &_ciEnv_arena; | |
123 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
124 | |
125 // Preload commonly referenced system ciObjects. | |
126 | |
127 // During VM initialization, these instances have not yet been created. | |
128 // Assertions ensure that these instances are not accessed before | |
129 // their initialization. | |
130 | |
131 assert(Universe::is_fully_initialized(), "should be complete"); | |
132 | |
133 oop o = Universe::null_ptr_exception_instance(); | |
134 assert(o != NULL, "should have been initialized"); | |
135 _NullPointerException_instance = get_object(o)->as_instance(); | |
136 o = Universe::arithmetic_exception_instance(); | |
137 assert(o != NULL, "should have been initialized"); | |
138 _ArithmeticException_instance = get_object(o)->as_instance(); | |
139 | |
140 _ArrayIndexOutOfBoundsException_instance = NULL; | |
141 _ArrayStoreException_instance = NULL; | |
142 _ClassCastException_instance = NULL; | |
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143 _the_null_string = NULL; |
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144 _the_min_jint_string = NULL; |
0 | 145 } |
146 | |
147 ciEnv::ciEnv(Arena* arena) { | |
148 ASSERT_IN_VM; | |
149 | |
150 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
151 CompilerThread* current_thread = CompilerThread::current(); | |
152 assert(current_thread->env() == NULL, "must be"); | |
153 current_thread->set_env(this); | |
154 assert(ciEnv::current() == this, "sanity"); | |
155 | |
156 _oop_recorder = NULL; | |
157 _debug_info = NULL; | |
158 _dependencies = NULL; | |
159 _failure_reason = NULL; | |
160 _compilable = MethodCompilable_never; | |
161 _break_at_compile = false; | |
162 _compiler_data = NULL; | |
163 #ifndef PRODUCT | |
164 assert(firstEnv, "must be first"); | |
165 firstEnv = false; | |
166 #endif /* !PRODUCT */ | |
167 | |
168 _system_dictionary_modification_counter = 0; | |
169 _num_inlined_bytecodes = 0; | |
170 _task = NULL; | |
171 _log = NULL; | |
172 | |
173 // Temporary buffer for creating symbols and such. | |
174 _name_buffer = NULL; | |
175 _name_buffer_len = 0; | |
176 | |
177 _arena = arena; | |
178 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
179 | |
180 // Preload commonly referenced system ciObjects. | |
181 | |
182 // During VM initialization, these instances have not yet been created. | |
183 // Assertions ensure that these instances are not accessed before | |
184 // their initialization. | |
185 | |
186 assert(Universe::is_fully_initialized(), "must be"); | |
187 | |
188 oop o = Universe::null_ptr_exception_instance(); | |
189 assert(o != NULL, "should have been initialized"); | |
190 _NullPointerException_instance = get_object(o)->as_instance(); | |
191 o = Universe::arithmetic_exception_instance(); | |
192 assert(o != NULL, "should have been initialized"); | |
193 _ArithmeticException_instance = get_object(o)->as_instance(); | |
194 | |
195 _ArrayIndexOutOfBoundsException_instance = NULL; | |
196 _ArrayStoreException_instance = NULL; | |
197 _ClassCastException_instance = NULL; | |
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198 _the_null_string = NULL; |
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199 _the_min_jint_string = NULL; |
0 | 200 } |
201 | |
202 ciEnv::~ciEnv() { | |
203 CompilerThread* current_thread = CompilerThread::current(); | |
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204 _factory->remove_symbols(); |
0 | 205 current_thread->set_env(NULL); |
206 } | |
207 | |
208 // ------------------------------------------------------------------ | |
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209 // Cache Jvmti state |
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210 void ciEnv::cache_jvmti_state() { |
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211 VM_ENTRY_MARK; |
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212 // Get Jvmti capabilities under lock to get consistant values. |
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213 MutexLocker mu(JvmtiThreadState_lock); |
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214 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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215 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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216 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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217 } |
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218 |
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219 // ------------------------------------------------------------------ |
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220 // Cache DTrace flags |
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221 void ciEnv::cache_dtrace_flags() { |
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222 // Need lock? |
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223 _dtrace_extended_probes = ExtendedDTraceProbes; |
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224 if (_dtrace_extended_probes) { |
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225 _dtrace_monitor_probes = true; |
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226 _dtrace_method_probes = true; |
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227 _dtrace_alloc_probes = true; |
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228 } else { |
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229 _dtrace_monitor_probes = DTraceMonitorProbes; |
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230 _dtrace_method_probes = DTraceMethodProbes; |
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231 _dtrace_alloc_probes = DTraceAllocProbes; |
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232 } |
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233 } |
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234 |
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235 // ------------------------------------------------------------------ |
0 | 236 // helper for lazy exception creation |
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237 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { |
0 | 238 VM_ENTRY_MARK; |
239 if (handle == NULL) { | |
240 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
241 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); | |
242 jobject objh = NULL; | |
243 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
244 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); | |
245 if (!HAS_PENDING_EXCEPTION) | |
246 objh = JNIHandles::make_global(obj); | |
247 } | |
248 if (HAS_PENDING_EXCEPTION) { | |
249 CLEAR_PENDING_EXCEPTION; | |
250 } else { | |
251 handle = objh; | |
252 } | |
253 } | |
254 oop obj = JNIHandles::resolve(handle); | |
255 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
256 } | |
257 | |
258 // ------------------------------------------------------------------ | |
259 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc. | |
260 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
261 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
262 _ArrayIndexOutOfBoundsException_instance | |
263 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
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264 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
0 | 265 } |
266 return _ArrayIndexOutOfBoundsException_instance; | |
267 } | |
268 ciInstance* ciEnv::ArrayStoreException_instance() { | |
269 if (_ArrayStoreException_instance == NULL) { | |
270 _ArrayStoreException_instance | |
271 = get_or_create_exception(_ArrayStoreException_handle, | |
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272 vmSymbols::java_lang_ArrayStoreException()); |
0 | 273 } |
274 return _ArrayStoreException_instance; | |
275 } | |
276 ciInstance* ciEnv::ClassCastException_instance() { | |
277 if (_ClassCastException_instance == NULL) { | |
278 _ClassCastException_instance | |
279 = get_or_create_exception(_ClassCastException_handle, | |
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280 vmSymbols::java_lang_ClassCastException()); |
0 | 281 } |
282 return _ClassCastException_instance; | |
283 } | |
284 | |
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285 ciInstance* ciEnv::the_null_string() { |
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286 if (_the_null_string == NULL) { |
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287 VM_ENTRY_MARK; |
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288 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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289 } |
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290 return _the_null_string; |
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291 } |
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292 |
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293 ciInstance* ciEnv::the_min_jint_string() { |
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294 if (_the_min_jint_string == NULL) { |
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295 VM_ENTRY_MARK; |
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296 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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297 } |
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298 return _the_min_jint_string; |
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299 } |
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300 |
0 | 301 // ------------------------------------------------------------------ |
302 // ciEnv::get_method_from_handle | |
303 ciMethod* ciEnv::get_method_from_handle(jobject method) { | |
304 VM_ENTRY_MARK; | |
305 return get_object(JNIHandles::resolve(method))->as_method(); | |
306 } | |
307 | |
308 // ------------------------------------------------------------------ | |
309 // ciEnv::make_array | |
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310 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
0 | 311 VM_ENTRY_MARK; |
312 int length = objects->length(); | |
313 objArrayOop a = oopFactory::new_system_objArray(length, THREAD); | |
314 if (HAS_PENDING_EXCEPTION) { | |
315 CLEAR_PENDING_EXCEPTION; | |
316 record_out_of_memory_failure(); | |
317 return NULL; | |
318 } | |
319 for (int i = 0; i < length; i++) { | |
320 a->obj_at_put(i, objects->at(i)->get_oop()); | |
321 } | |
322 assert(a->is_perm(), ""); | |
323 return get_object(a)->as_array(); | |
324 } | |
325 | |
326 | |
327 // ------------------------------------------------------------------ | |
328 // ciEnv::array_element_offset_in_bytes | |
329 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
330 VM_ENTRY_MARK; | |
331 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
332 assert(a->is_objArray(), ""); | |
333 int length = a->length(); | |
334 oop o = o_h->get_oop(); | |
335 for (int i = 0; i < length; i++) { | |
336 if (a->obj_at(i) == o) return i; | |
337 } | |
338 return -1; | |
339 } | |
340 | |
341 | |
342 // ------------------------------------------------------------------ | |
343 // ciEnv::check_klass_accessiblity | |
344 // | |
345 // Note: the logic of this method should mirror the logic of | |
346 // constantPoolOopDesc::verify_constant_pool_resolve. | |
347 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, | |
348 klassOop resolved_klass) { | |
349 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { | |
350 return true; | |
351 } | |
352 if (accessing_klass->is_obj_array()) { | |
353 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); | |
354 } | |
355 if (!accessing_klass->is_instance_klass()) { | |
356 return true; | |
357 } | |
358 | |
359 if (resolved_klass->klass_part()->oop_is_objArray()) { | |
360 // Find the element klass, if this is an array. | |
361 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); | |
362 } | |
363 if (resolved_klass->klass_part()->oop_is_instance()) { | |
364 return Reflection::verify_class_access(accessing_klass->get_klassOop(), | |
365 resolved_klass, | |
366 true); | |
367 } | |
368 return true; | |
369 } | |
370 | |
371 // ------------------------------------------------------------------ | |
372 // ciEnv::get_klass_by_name_impl | |
373 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
374 ciSymbol* name, | |
375 bool require_local) { | |
376 ASSERT_IN_VM; | |
377 EXCEPTION_CONTEXT; | |
378 | |
379 // Now we need to check the SystemDictionary | |
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380 Symbol* sym = name->get_symbol(); |
0 | 381 if (sym->byte_at(0) == 'L' && |
382 sym->byte_at(sym->utf8_length()-1) == ';') { | |
383 // This is a name from a signature. Strip off the trimmings. | |
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384 // Call recursive to keep scope of strippedsym. |
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385 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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386 sym->utf8_length()-2, |
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387 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); |
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388 ciSymbol* strippedname = get_symbol(strippedsym); |
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389 return get_klass_by_name_impl(accessing_klass, strippedname, require_local); |
0 | 390 } |
391 | |
392 // Check for prior unloaded klass. The SystemDictionary's answers | |
393 // can vary over time but the compiler needs consistency. | |
394 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
395 if (unloaded_klass != NULL) { | |
396 if (require_local) return NULL; | |
397 return unloaded_klass; | |
398 } | |
399 | |
400 Handle loader(THREAD, (oop)NULL); | |
401 Handle domain(THREAD, (oop)NULL); | |
402 if (accessing_klass != NULL) { | |
403 loader = Handle(THREAD, accessing_klass->loader()); | |
404 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
405 } | |
406 | |
407 // setup up the proper type to return on OOM | |
408 ciKlass* fail_type; | |
409 if (sym->byte_at(0) == '[') { | |
410 fail_type = _unloaded_ciobjarrayklass; | |
411 } else { | |
412 fail_type = _unloaded_ciinstance_klass; | |
413 } | |
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414 KlassHandle found_klass; |
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415 { |
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416 ttyUnlocker ttyul; // release tty lock to avoid ordering problems |
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417 MutexLocker ml(Compile_lock); |
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418 klassOop kls; |
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419 if (!require_local) { |
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420 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, |
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421 KILL_COMPILE_ON_FATAL_(fail_type)); |
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422 } else { |
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423 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, |
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424 KILL_COMPILE_ON_FATAL_(fail_type)); |
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425 } |
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426 found_klass = KlassHandle(THREAD, kls); |
0 | 427 } |
428 | |
429 // If we fail to find an array klass, look again for its element type. | |
430 // The element type may be available either locally or via constraints. | |
431 // In either case, if we can find the element type in the system dictionary, | |
432 // we must build an array type around it. The CI requires array klasses | |
433 // to be loaded if their element klasses are loaded, except when memory | |
434 // is exhausted. | |
435 if (sym->byte_at(0) == '[' && | |
436 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
437 // We have an unloaded array. | |
438 // Build it on the fly if the element class exists. | |
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439 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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440 sym->utf8_length()-1, |
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441 KILL_COMPILE_ON_FATAL_(fail_type)); |
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442 |
0 | 443 // Get element ciKlass recursively. |
444 ciKlass* elem_klass = | |
445 get_klass_by_name_impl(accessing_klass, | |
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446 get_symbol(elem_sym), |
0 | 447 require_local); |
448 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
449 // Now make an array for it | |
450 return ciObjArrayKlass::make_impl(elem_klass); | |
451 } | |
452 } | |
453 | |
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454 if (found_klass() != NULL) { |
0 | 455 // Found it. Build a CI handle. |
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456 return get_object(found_klass())->as_klass(); |
0 | 457 } |
458 | |
459 if (require_local) return NULL; | |
460 // Not yet loaded into the VM, or not governed by loader constraints. | |
461 // Make a CI representative for it. | |
462 return get_unloaded_klass(accessing_klass, name); | |
463 } | |
464 | |
465 // ------------------------------------------------------------------ | |
466 // ciEnv::get_klass_by_name | |
467 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
468 ciSymbol* klass_name, | |
469 bool require_local) { | |
470 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
471 klass_name, | |
472 require_local);) | |
473 } | |
474 | |
475 // ------------------------------------------------------------------ | |
476 // ciEnv::get_klass_by_index_impl | |
477 // | |
478 // Implementation of get_klass_by_index. | |
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479 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
0 | 480 int index, |
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481 bool& is_accessible, |
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482 ciInstanceKlass* accessor) { |
0 | 483 EXCEPTION_CONTEXT; |
484 KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); | |
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485 Symbol* klass_name = NULL; |
0 | 486 if (klass.is_null()) { |
487 // The klass has not been inserted into the constant pool. | |
488 // Try to look it up by name. | |
489 { | |
490 // We have to lock the cpool to keep the oop from being resolved | |
491 // while we are accessing it. | |
492 ObjectLocker ol(cpool, THREAD); | |
493 | |
494 constantTag tag = cpool->tag_at(index); | |
495 if (tag.is_klass()) { | |
496 // The klass has been inserted into the constant pool | |
497 // very recently. | |
498 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
499 } else if (tag.is_symbol()) { | |
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500 klass_name = cpool->symbol_at(index); |
0 | 501 } else { |
502 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
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503 klass_name = cpool->unresolved_klass_at(index); |
0 | 504 } |
505 } | |
506 } | |
507 | |
508 if (klass.is_null()) { | |
509 // Not found in constant pool. Use the name to do the lookup. | |
510 ciKlass* k = get_klass_by_name_impl(accessor, | |
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511 get_symbol(klass_name), |
0 | 512 false); |
513 // Calculate accessibility the hard way. | |
514 if (!k->is_loaded()) { | |
515 is_accessible = false; | |
516 } else if (k->loader() != accessor->loader() && | |
517 get_klass_by_name_impl(accessor, k->name(), true) == NULL) { | |
518 // Loaded only remotely. Not linked yet. | |
519 is_accessible = false; | |
520 } else { | |
521 // Linked locally, and we must also check public/private, etc. | |
522 is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); | |
523 } | |
524 return k; | |
525 } | |
526 | |
527 // Check for prior unloaded klass. The SystemDictionary's answers | |
528 // can vary over time but the compiler needs consistency. | |
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529 ciSymbol* name = get_symbol(klass()->klass_part()->name()); |
0 | 530 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
531 if (unloaded_klass != NULL) { | |
532 is_accessible = false; | |
533 return unloaded_klass; | |
534 } | |
535 | |
536 // It is known to be accessible, since it was found in the constant pool. | |
537 is_accessible = true; | |
538 return get_object(klass())->as_klass(); | |
539 } | |
540 | |
541 // ------------------------------------------------------------------ | |
542 // ciEnv::get_klass_by_index | |
543 // | |
544 // Get a klass from the constant pool. | |
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545 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
0 | 546 int index, |
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547 bool& is_accessible, |
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548 ciInstanceKlass* accessor) { |
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549 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
0 | 550 } |
551 | |
552 // ------------------------------------------------------------------ | |
553 // ciEnv::get_constant_by_index_impl | |
554 // | |
555 // Implementation of get_constant_by_index(). | |
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556 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
1602 | 557 int pool_index, int cache_index, |
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558 ciInstanceKlass* accessor) { |
1602 | 559 bool ignore_will_link; |
0 | 560 EXCEPTION_CONTEXT; |
1602 | 561 int index = pool_index; |
562 if (cache_index >= 0) { | |
563 assert(index < 0, "only one kind of index at a time"); | |
564 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index); | |
565 index = cpc_entry->constant_pool_index(); | |
566 oop obj = cpc_entry->f1(); | |
567 if (obj != NULL) { | |
568 assert(obj->is_instance(), "must be an instance"); | |
569 ciObject* ciobj = get_object(obj); | |
570 return ciConstant(T_OBJECT, ciobj); | |
571 } | |
572 } | |
0 | 573 constantTag tag = cpool->tag_at(index); |
574 if (tag.is_int()) { | |
575 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
576 } else if (tag.is_long()) { | |
577 return ciConstant((jlong)cpool->long_at(index)); | |
578 } else if (tag.is_float()) { | |
579 return ciConstant((jfloat)cpool->float_at(index)); | |
580 } else if (tag.is_double()) { | |
581 return ciConstant((jdouble)cpool->double_at(index)); | |
582 } else if (tag.is_string() || tag.is_unresolved_string()) { | |
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583 oop string = NULL; |
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584 if (cpool->is_pseudo_string_at(index)) { |
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585 string = cpool->pseudo_string_at(index); |
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586 } else { |
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587 string = cpool->string_at(index, THREAD); |
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588 if (HAS_PENDING_EXCEPTION) { |
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589 CLEAR_PENDING_EXCEPTION; |
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590 record_out_of_memory_failure(); |
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591 return ciConstant(); |
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592 } |
0 | 593 } |
594 ciObject* constant = get_object(string); | |
595 assert (constant->is_instance(), "must be an instance, or not? "); | |
596 return ciConstant(T_OBJECT, constant); | |
597 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
598 // 4881222: allow ldc to take a class type | |
1602 | 599 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
0 | 600 if (HAS_PENDING_EXCEPTION) { |
601 CLEAR_PENDING_EXCEPTION; | |
602 record_out_of_memory_failure(); | |
603 return ciConstant(); | |
604 } | |
605 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
606 "must be an instance or array klass "); | |
1602 | 607 return ciConstant(T_OBJECT, klass->java_mirror()); |
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608 } else if (tag.is_object()) { |
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609 oop obj = cpool->object_at(index); |
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610 assert(obj->is_instance(), "must be an instance"); |
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611 ciObject* ciobj = get_object(obj); |
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612 return ciConstant(T_OBJECT, ciobj); |
1602 | 613 } else if (tag.is_method_type()) { |
614 // must execute Java code to link this CP entry into cache[i].f1 | |
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615 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); |
1602 | 616 ciObject* ciobj = get_unloaded_method_type_constant(signature); |
617 return ciConstant(T_OBJECT, ciobj); | |
618 } else if (tag.is_method_handle()) { | |
619 // must execute Java code to link this CP entry into cache[i].f1 | |
620 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
621 int callee_index = cpool->method_handle_klass_index_at(index); | |
622 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
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623 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); |
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624 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); |
1602 | 625 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
626 return ciConstant(T_OBJECT, ciobj); | |
0 | 627 } else { |
628 ShouldNotReachHere(); | |
629 return ciConstant(); | |
630 } | |
631 } | |
632 | |
633 // ------------------------------------------------------------------ | |
634 // ciEnv::get_constant_by_index | |
635 // | |
636 // Pull a constant out of the constant pool. How appropriate. | |
637 // | |
638 // Implementation note: this query is currently in no way cached. | |
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639 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
1602 | 640 int pool_index, int cache_index, |
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641 ciInstanceKlass* accessor) { |
1602 | 642 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
0 | 643 } |
644 | |
645 // ------------------------------------------------------------------ | |
646 // ciEnv::get_field_by_index_impl | |
647 // | |
648 // Implementation of get_field_by_index. | |
649 // | |
650 // Implementation note: the results of field lookups are cached | |
651 // in the accessor klass. | |
652 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
653 int index) { | |
654 ciConstantPoolCache* cache = accessor->field_cache(); | |
655 if (cache == NULL) { | |
656 ciField* field = new (arena()) ciField(accessor, index); | |
657 return field; | |
658 } else { | |
659 ciField* field = (ciField*)cache->get(index); | |
660 if (field == NULL) { | |
661 field = new (arena()) ciField(accessor, index); | |
662 cache->insert(index, field); | |
663 } | |
664 return field; | |
665 } | |
666 } | |
667 | |
668 // ------------------------------------------------------------------ | |
669 // ciEnv::get_field_by_index | |
670 // | |
671 // Get a field by index from a klass's constant pool. | |
672 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
673 int index) { | |
674 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
675 } | |
676 | |
677 // ------------------------------------------------------------------ | |
678 // ciEnv::lookup_method | |
679 // | |
680 // Perform an appropriate method lookup based on accessor, holder, | |
681 // name, signature, and bytecode. | |
682 methodOop ciEnv::lookup_method(instanceKlass* accessor, | |
683 instanceKlass* holder, | |
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684 Symbol* name, |
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685 Symbol* sig, |
0 | 686 Bytecodes::Code bc) { |
687 EXCEPTION_CONTEXT; | |
688 KlassHandle h_accessor(THREAD, accessor); | |
689 KlassHandle h_holder(THREAD, holder); | |
690 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
691 methodHandle dest_method; | |
692 switch (bc) { | |
693 case Bytecodes::_invokestatic: | |
694 dest_method = | |
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695 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); |
0 | 696 break; |
697 case Bytecodes::_invokespecial: | |
698 dest_method = | |
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699 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); |
0 | 700 break; |
701 case Bytecodes::_invokeinterface: | |
702 dest_method = | |
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703 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, |
0 | 704 h_accessor, true); |
705 break; | |
706 case Bytecodes::_invokevirtual: | |
707 dest_method = | |
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708 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, |
0 | 709 h_accessor, true); |
710 break; | |
711 default: ShouldNotReachHere(); | |
712 } | |
713 | |
714 return dest_method(); | |
715 } | |
716 | |
717 | |
718 // ------------------------------------------------------------------ | |
719 // ciEnv::get_method_by_index_impl | |
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720 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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721 int index, Bytecodes::Code bc, |
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722 ciInstanceKlass* accessor) { |
0 | 723 int holder_index = cpool->klass_ref_index_at(index); |
724 bool holder_is_accessible; | |
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725 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
0 | 726 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
727 | |
728 // Get the method's name and signature. | |
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729 Symbol* name_sym = cpool->name_ref_at(index); |
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730 Symbol* sig_sym = cpool->signature_ref_at(index); |
0 | 731 |
732 if (holder_is_accessible) { // Our declared holder is loaded. | |
733 instanceKlass* lookup = declared_holder->get_instanceKlass(); | |
734 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); | |
735 if (m != NULL) { | |
736 // We found the method. | |
737 return get_object(m)->as_method(); | |
738 } | |
739 } | |
740 | |
741 // Either the declared holder was not loaded, or the method could | |
742 // not be found. Create a dummy ciMethod to represent the failed | |
743 // lookup. | |
744 | |
745 return get_unloaded_method(declared_holder, | |
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746 get_symbol(name_sym), |
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747 get_symbol(sig_sym)); |
0 | 748 } |
749 | |
750 | |
751 // ------------------------------------------------------------------ | |
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752 // ciEnv::get_fake_invokedynamic_method_impl |
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753 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
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754 int index, Bytecodes::Code bc) { |
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755 // Compare the following logic with InterpreterRuntime::resolve_invokedynamic. |
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756 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic"); |
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757 |
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758 bool is_resolved = cpool->cache()->main_entry_at(index)->is_resolved(bc); |
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759 if (is_resolved && cpool->cache()->secondary_entry_at(index)->is_f1_null()) |
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760 // FIXME: code generation could allow for null (unlinked) call site |
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761 is_resolved = false; |
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762 |
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763 // Call site might not be resolved yet. We could create a real invoker method from the |
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764 // compiler, but it is simpler to stop the code path here with an unlinked method. |
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765 if (!is_resolved) { |
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766 ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass(); |
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767 ciSymbol* sig_sym = get_symbol(cpool->signature_ref_at(index)); |
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768 return get_unloaded_method(mh_klass, ciSymbol::invokeExact_name(), sig_sym); |
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769 } |
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770 |
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771 // Get the invoker methodOop from the constant pool. |
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772 oop f1_value = cpool->cache()->main_entry_at(index)->f1(); |
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773 methodOop signature_invoker = (methodOop) f1_value; |
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774 assert(signature_invoker != NULL && signature_invoker->is_method() && signature_invoker->is_method_handle_invoke(), |
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775 "correct result from LinkResolver::resolve_invokedynamic"); |
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776 |
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777 return get_object(signature_invoker)->as_method(); |
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778 } |
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779 |
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780 |
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781 // ------------------------------------------------------------------ |
0 | 782 // ciEnv::get_instance_klass_for_declared_method_holder |
783 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
784 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
785 // instead of a ciInstanceKlass. For that case simply pretend that the | |
786 // declared holder is Object.clone since that's where the call will bottom out. | |
787 // A more correct fix would trickle out through many interfaces in CI, | |
788 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
789 // require checks to make sure the expected type was found. Given that this | |
790 // only occurs for clone() the more extensive fix seems like overkill so | |
791 // instead we simply smear the array type into Object. | |
792 if (method_holder->is_instance_klass()) { | |
793 return method_holder->as_instance_klass(); | |
794 } else if (method_holder->is_array_klass()) { | |
795 return current()->Object_klass(); | |
796 } else { | |
797 ShouldNotReachHere(); | |
798 } | |
799 return NULL; | |
800 } | |
801 | |
802 | |
803 // ------------------------------------------------------------------ | |
804 // ciEnv::get_method_by_index | |
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805 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
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806 int index, Bytecodes::Code bc, |
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807 ciInstanceKlass* accessor) { |
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808 if (bc == Bytecodes::_invokedynamic) { |
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809 GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc);) |
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810 } else { |
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811 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
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812 } |
0 | 813 } |
814 | |
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815 |
0 | 816 // ------------------------------------------------------------------ |
817 // ciEnv::name_buffer | |
818 char *ciEnv::name_buffer(int req_len) { | |
819 if (_name_buffer_len < req_len) { | |
820 if (_name_buffer == NULL) { | |
821 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
822 _name_buffer_len = req_len; | |
823 } else { | |
824 _name_buffer = | |
825 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
826 _name_buffer_len = req_len; | |
827 } | |
828 } | |
829 return _name_buffer; | |
830 } | |
831 | |
832 // ------------------------------------------------------------------ | |
833 // ciEnv::is_in_vm | |
834 bool ciEnv::is_in_vm() { | |
835 return JavaThread::current()->thread_state() == _thread_in_vm; | |
836 } | |
837 | |
838 bool ciEnv::system_dictionary_modification_counter_changed() { | |
839 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
840 } | |
841 | |
842 // ------------------------------------------------------------------ | |
843 // ciEnv::check_for_system_dictionary_modification | |
844 // Check for changes to the system dictionary during compilation | |
845 // class loads, evolution, breakpoints | |
846 void ciEnv::check_for_system_dictionary_modification(ciMethod* target) { | |
847 if (failing()) return; // no need for further checks | |
848 | |
849 // Dependencies must be checked when the system dictionary changes. | |
850 // If logging is enabled all violated dependences will be recorded in | |
851 // the log. In debug mode check dependencies even if the system | |
852 // dictionary hasn't changed to verify that no invalid dependencies | |
853 // were inserted. Any violated dependences in this case are dumped to | |
854 // the tty. | |
855 | |
856 bool counter_changed = system_dictionary_modification_counter_changed(); | |
857 bool test_deps = counter_changed; | |
858 DEBUG_ONLY(test_deps = true); | |
859 if (!test_deps) return; | |
860 | |
861 bool print_failures = false; | |
862 DEBUG_ONLY(print_failures = !counter_changed); | |
863 | |
864 bool keep_going = (print_failures || xtty != NULL); | |
865 | |
866 int violated = 0; | |
867 | |
868 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { | |
869 klassOop witness = deps.check_dependency(); | |
870 if (witness != NULL) { | |
871 ++violated; | |
872 if (print_failures) deps.print_dependency(witness, /*verbose=*/ true); | |
873 // If there's no log and we're not sanity-checking, we're done. | |
874 if (!keep_going) break; | |
875 } | |
876 } | |
877 | |
878 if (violated != 0) { | |
879 assert(counter_changed, "failed dependencies, but counter didn't change"); | |
880 record_failure("concurrent class loading"); | |
881 } | |
882 } | |
883 | |
884 // ------------------------------------------------------------------ | |
885 // ciEnv::register_method | |
886 void ciEnv::register_method(ciMethod* target, | |
887 int entry_bci, | |
888 CodeOffsets* offsets, | |
889 int orig_pc_offset, | |
890 CodeBuffer* code_buffer, | |
891 int frame_words, | |
892 OopMapSet* oop_map_set, | |
893 ExceptionHandlerTable* handler_table, | |
894 ImplicitExceptionTable* inc_table, | |
895 AbstractCompiler* compiler, | |
896 int comp_level, | |
897 bool has_debug_info, | |
898 bool has_unsafe_access) { | |
899 VM_ENTRY_MARK; | |
900 nmethod* nm = NULL; | |
901 { | |
902 // To prevent compile queue updates. | |
903 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
904 | |
905 // Prevent SystemDictionary::add_to_hierarchy from running | |
906 // and invalidating our dependencies until we install this method. | |
907 MutexLocker ml(Compile_lock); | |
908 | |
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909 // Change in Jvmti state may invalidate compilation. |
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910 if (!failing() && |
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911 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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912 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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913 (!jvmti_can_access_local_variables() && |
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914 JvmtiExport::can_access_local_variables()) || |
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915 (!jvmti_can_post_on_exceptions() && |
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916 JvmtiExport::can_post_on_exceptions()) )) { |
780
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917 record_failure("Jvmti state change invalidated dependencies"); |
0 | 918 } |
919 | |
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920 // Change in DTrace flags may invalidate compilation. |
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921 if (!failing() && |
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922 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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923 (!dtrace_method_probes() && DTraceMethodProbes) || |
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924 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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925 record_failure("DTrace flags change invalidated dependencies"); |
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926 } |
0 | 927 |
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928 if (!failing()) { |
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929 if (log() != NULL) { |
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930 // Log the dependencies which this compilation declares. |
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931 dependencies()->log_all_dependencies(); |
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932 } |
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933 |
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934 // Encode the dependencies now, so we can check them right away. |
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935 dependencies()->encode_content_bytes(); |
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936 |
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937 // Check for {class loads, evolution, breakpoints} during compilation |
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938 check_for_system_dictionary_modification(target); |
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939 } |
0 | 940 |
941 methodHandle method(THREAD, target->get_methodOop()); | |
942 | |
943 if (failing()) { | |
944 // While not a true deoptimization, it is a preemptive decompile. | |
945 methodDataOop mdo = method()->method_data(); | |
946 if (mdo != NULL) { | |
947 mdo->inc_decompile_count(); | |
948 } | |
949 | |
950 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
951 // If the code buffer is created on each compile attempt | |
952 // as in C2, then it must be freed. | |
953 code_buffer->free_blob(); | |
954 return; | |
955 } | |
956 | |
957 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
958 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
959 | |
960 nm = nmethod::new_nmethod(method, | |
961 compile_id(), | |
962 entry_bci, | |
963 offsets, | |
964 orig_pc_offset, | |
965 debug_info(), dependencies(), code_buffer, | |
966 frame_words, oop_map_set, | |
967 handler_table, inc_table, | |
968 compiler, comp_level); | |
969 | |
970 // Free codeBlobs | |
971 code_buffer->free_blob(); | |
972 | |
973 // stress test 6243940 by immediately making the method | |
974 // non-entrant behind the system's back. This has serious | |
975 // side effects on the code cache and is not meant for | |
976 // general stress testing | |
977 if (nm != NULL && StressNonEntrant) { | |
978 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
979 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
980 SharedRuntime::get_handle_wrong_method_stub()); | |
981 } | |
982 | |
983 if (nm == NULL) { | |
984 // The CodeCache is full. Print out warning and disable compilation. | |
985 record_failure("code cache is full"); | |
1202 | 986 { |
987 MutexUnlocker ml(Compile_lock); | |
988 MutexUnlocker locker(MethodCompileQueue_lock); | |
989 CompileBroker::handle_full_code_cache(); | |
0 | 990 } |
991 } else { | |
992 NOT_PRODUCT(nm->set_has_debug_info(has_debug_info); ) | |
993 nm->set_has_unsafe_access(has_unsafe_access); | |
994 | |
995 // Record successful registration. | |
996 // (Put nm into the task handle *before* publishing to the Java heap.) | |
997 if (task() != NULL) task()->set_code(nm); | |
998 | |
999 if (entry_bci == InvocationEntryBci) { | |
1783 | 1000 if (TieredCompilation) { |
1001 // If there is an old version we're done with it | |
1002 nmethod* old = method->code(); | |
1003 if (TraceMethodReplacement && old != NULL) { | |
1004 ResourceMark rm; | |
1005 char *method_name = method->name_and_sig_as_C_string(); | |
1006 tty->print_cr("Replacing method %s", method_name); | |
1007 } | |
1008 if (old != NULL ) { | |
1009 old->make_not_entrant(); | |
1010 } | |
0 | 1011 } |
1012 if (TraceNMethodInstalls ) { | |
1013 ResourceMark rm; | |
1014 char *method_name = method->name_and_sig_as_C_string(); | |
1015 ttyLocker ttyl; | |
1016 tty->print_cr("Installing method (%d) %s ", | |
1017 comp_level, | |
1018 method_name); | |
1019 } | |
1020 // Allow the code to be executed | |
1021 method->set_code(method, nm); | |
1022 } else { | |
1023 if (TraceNMethodInstalls ) { | |
1024 ResourceMark rm; | |
1025 char *method_name = method->name_and_sig_as_C_string(); | |
1026 ttyLocker ttyl; | |
1027 tty->print_cr("Installing osr method (%d) %s @ %d", | |
1028 comp_level, | |
1029 method_name, | |
1030 entry_bci); | |
1031 } | |
1032 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); | |
1033 | |
1034 } | |
1035 } | |
1036 } | |
1037 // JVMTI -- compiled method notification (must be done outside lock) | |
1038 if (nm != NULL) { | |
1039 nm->post_compiled_method_load_event(); | |
1040 } | |
1041 | |
1042 } | |
1043 | |
1044 | |
1045 // ------------------------------------------------------------------ | |
1046 // ciEnv::find_system_klass | |
1047 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
1048 VM_ENTRY_MARK; | |
1049 return get_klass_by_name_impl(NULL, klass_name, false); | |
1050 } | |
1051 | |
1052 // ------------------------------------------------------------------ | |
1053 // ciEnv::comp_level | |
1054 int ciEnv::comp_level() { | |
1783 | 1055 if (task() == NULL) return CompLevel_highest_tier; |
0 | 1056 return task()->comp_level(); |
1057 } | |
1058 | |
1059 // ------------------------------------------------------------------ | |
1060 // ciEnv::compile_id | |
1061 uint ciEnv::compile_id() { | |
1062 if (task() == NULL) return 0; | |
1063 return task()->compile_id(); | |
1064 } | |
1065 | |
1066 // ------------------------------------------------------------------ | |
1067 // ciEnv::notice_inlined_method() | |
1068 void ciEnv::notice_inlined_method(ciMethod* method) { | |
1069 _num_inlined_bytecodes += method->code_size(); | |
1070 } | |
1071 | |
1072 // ------------------------------------------------------------------ | |
1073 // ciEnv::num_inlined_bytecodes() | |
1074 int ciEnv::num_inlined_bytecodes() const { | |
1075 return _num_inlined_bytecodes; | |
1076 } | |
1077 | |
1078 // ------------------------------------------------------------------ | |
1079 // ciEnv::record_failure() | |
1080 void ciEnv::record_failure(const char* reason) { | |
1081 if (log() != NULL) { | |
1082 log()->elem("failure reason='%s'", reason); | |
1083 } | |
1084 if (_failure_reason == NULL) { | |
1085 // Record the first failure reason. | |
1086 _failure_reason = reason; | |
1087 } | |
1088 } | |
1089 | |
1090 // ------------------------------------------------------------------ | |
1091 // ciEnv::record_method_not_compilable() | |
1092 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
1093 int new_compilable = | |
1094 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
1095 | |
1096 // Only note transitions to a worse state | |
1097 if (new_compilable > _compilable) { | |
1098 if (log() != NULL) { | |
1099 if (all_tiers) { | |
1100 log()->elem("method_not_compilable"); | |
1101 } else { | |
1102 log()->elem("method_not_compilable_at_tier"); | |
1103 } | |
1104 } | |
1105 _compilable = new_compilable; | |
1106 | |
1107 // Reset failure reason; this one is more important. | |
1108 _failure_reason = NULL; | |
1109 record_failure(reason); | |
1110 } | |
1111 } | |
1112 | |
1113 // ------------------------------------------------------------------ | |
1114 // ciEnv::record_out_of_memory_failure() | |
1115 void ciEnv::record_out_of_memory_failure() { | |
1116 // If memory is low, we stop compiling methods. | |
1117 record_method_not_compilable("out of memory"); | |
1118 } |