Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciEnv.cpp @ 7046:b6a8f2d23057
VM support for deferred reads and writes: ScopeDesc, DebugInfo, DebugInfoRecorder
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Tue, 27 Nov 2012 13:43:04 +0100 |
parents | 2cb439954abf |
children | ce248dc0a656 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #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/ciMethod.hpp" | |
32 #include "ci/ciNullObject.hpp" | |
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33 #include "ci/ciReplay.hpp" |
1972 | 34 #include "ci/ciUtilities.hpp" |
35 #include "classfile/systemDictionary.hpp" | |
36 #include "classfile/vmSymbols.hpp" | |
37 #include "code/scopeDesc.hpp" | |
38 #include "compiler/compileBroker.hpp" | |
39 #include "compiler/compileLog.hpp" | |
40 #include "compiler/compilerOracle.hpp" | |
41 #include "gc_interface/collectedHeap.inline.hpp" | |
42 #include "interpreter/linkResolver.hpp" | |
43 #include "memory/allocation.inline.hpp" | |
44 #include "memory/oopFactory.hpp" | |
45 #include "memory/universe.inline.hpp" | |
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46 #include "oops/methodData.hpp" |
1972 | 47 #include "oops/objArrayKlass.hpp" |
48 #include "oops/oop.inline.hpp" | |
49 #include "oops/oop.inline2.hpp" | |
50 #include "prims/jvmtiExport.hpp" | |
51 #include "runtime/init.hpp" | |
52 #include "runtime/reflection.hpp" | |
53 #include "runtime/sharedRuntime.hpp" | |
54 #include "utilities/dtrace.hpp" | |
55 #ifdef COMPILER1 | |
56 #include "c1/c1_Runtime1.hpp" | |
57 #endif | |
58 #ifdef COMPILER2 | |
59 #include "opto/runtime.hpp" | |
60 #endif | |
0 | 61 |
62 // ciEnv | |
63 // | |
64 // This class is the top level broker for requests from the compiler | |
65 // to the VM. | |
66 | |
67 ciObject* ciEnv::_null_object_instance; | |
68 | |
1142 | 69 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
70 WK_KLASSES_DO(WK_KLASS_DEFN) | |
71 #undef WK_KLASS_DEFN | |
0 | 72 |
73 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
74 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
75 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
76 | |
77 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
78 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
79 jobject ciEnv::_ClassCastException_handle = NULL; | |
80 | |
81 #ifndef PRODUCT | |
82 static bool firstEnv = true; | |
83 #endif /* PRODUCT */ | |
84 | |
85 // ------------------------------------------------------------------ | |
86 // ciEnv::ciEnv | |
87 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
88 VM_ENTRY_MARK; | |
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89 CompilerThread* compiler_thread = CompilerThread::current(); |
0 | 90 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. |
91 thread->set_env(this); | |
92 assert(ciEnv::current() == this, "sanity"); | |
93 | |
94 _oop_recorder = NULL; | |
95 _debug_info = NULL; | |
96 _dependencies = NULL; | |
97 _failure_reason = NULL; | |
98 _compilable = MethodCompilable; | |
99 _break_at_compile = false; | |
100 _compiler_data = NULL; | |
101 #ifndef PRODUCT | |
102 assert(!firstEnv, "not initialized properly"); | |
103 #endif /* !PRODUCT */ | |
104 | |
105 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
106 _num_inlined_bytecodes = 0; | |
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107 assert(task == NULL || compiler_thread->task() == task, "sanity"); |
0 | 108 _task = task; |
109 _log = NULL; | |
110 | |
111 // Temporary buffer for creating symbols and such. | |
112 _name_buffer = NULL; | |
113 _name_buffer_len = 0; | |
114 | |
115 _arena = &_ciEnv_arena; | |
116 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
117 | |
118 // Preload commonly referenced system ciObjects. | |
119 | |
120 // During VM initialization, these instances have not yet been created. | |
121 // Assertions ensure that these instances are not accessed before | |
122 // their initialization. | |
123 | |
124 assert(Universe::is_fully_initialized(), "should be complete"); | |
125 | |
126 oop o = Universe::null_ptr_exception_instance(); | |
127 assert(o != NULL, "should have been initialized"); | |
128 _NullPointerException_instance = get_object(o)->as_instance(); | |
129 o = Universe::arithmetic_exception_instance(); | |
130 assert(o != NULL, "should have been initialized"); | |
131 _ArithmeticException_instance = get_object(o)->as_instance(); | |
132 | |
133 _ArrayIndexOutOfBoundsException_instance = NULL; | |
134 _ArrayStoreException_instance = NULL; | |
135 _ClassCastException_instance = NULL; | |
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136 _the_null_string = NULL; |
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137 _the_min_jint_string = NULL; |
0 | 138 } |
139 | |
140 ciEnv::ciEnv(Arena* arena) { | |
141 ASSERT_IN_VM; | |
142 | |
143 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
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144 #ifdef GRAAL |
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145 JavaThread* current_thread = JavaThread::current(); |
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146 #else |
0 | 147 CompilerThread* current_thread = CompilerThread::current(); |
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148 #endif |
0 | 149 assert(current_thread->env() == NULL, "must be"); |
150 current_thread->set_env(this); | |
151 assert(ciEnv::current() == this, "sanity"); | |
152 | |
153 _oop_recorder = NULL; | |
154 _debug_info = NULL; | |
155 _dependencies = NULL; | |
156 _failure_reason = NULL; | |
157 _compilable = MethodCompilable_never; | |
158 _break_at_compile = false; | |
159 _compiler_data = NULL; | |
160 #ifndef PRODUCT | |
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161 #ifndef GRAAL |
0 | 162 assert(firstEnv, "must be first"); |
163 firstEnv = false; | |
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164 #endif |
0 | 165 #endif /* !PRODUCT */ |
166 | |
167 _system_dictionary_modification_counter = 0; | |
168 _num_inlined_bytecodes = 0; | |
169 _task = NULL; | |
170 _log = NULL; | |
171 | |
172 // Temporary buffer for creating symbols and such. | |
173 _name_buffer = NULL; | |
174 _name_buffer_len = 0; | |
175 | |
176 _arena = arena; | |
177 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
178 | |
179 // Preload commonly referenced system ciObjects. | |
180 | |
181 // During VM initialization, these instances have not yet been created. | |
182 // Assertions ensure that these instances are not accessed before | |
183 // their initialization. | |
184 | |
185 assert(Universe::is_fully_initialized(), "must be"); | |
186 | |
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187 _NullPointerException_instance = NULL; |
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188 _ArithmeticException_instance = NULL; |
0 | 189 _ArrayIndexOutOfBoundsException_instance = NULL; |
190 _ArrayStoreException_instance = NULL; | |
191 _ClassCastException_instance = NULL; | |
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192 _the_null_string = NULL; |
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193 _the_min_jint_string = NULL; |
0 | 194 } |
195 | |
196 ciEnv::~ciEnv() { | |
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197 #ifdef GRAAL |
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198 _factory->remove_symbols(); |
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199 JavaThread::current()->set_env(NULL); |
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200 #else |
0 | 201 CompilerThread* current_thread = CompilerThread::current(); |
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202 _factory->remove_symbols(); |
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203 // Need safepoint to clear the env on the thread. RedefineClasses might |
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204 // be reading it. |
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205 GUARDED_VM_ENTRY(current_thread->set_env(NULL);) |
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206 #endif |
0 | 207 } |
208 | |
209 // ------------------------------------------------------------------ | |
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210 // Cache Jvmti state |
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211 void ciEnv::cache_jvmti_state() { |
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212 VM_ENTRY_MARK; |
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213 // Get Jvmti capabilities under lock to get consistant values. |
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214 MutexLocker mu(JvmtiThreadState_lock); |
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215 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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216 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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217 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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218 } |
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219 |
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220 // ------------------------------------------------------------------ |
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221 // Cache DTrace flags |
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222 void ciEnv::cache_dtrace_flags() { |
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223 // Need lock? |
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224 _dtrace_extended_probes = ExtendedDTraceProbes; |
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225 if (_dtrace_extended_probes) { |
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226 _dtrace_monitor_probes = true; |
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227 _dtrace_method_probes = true; |
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228 _dtrace_alloc_probes = true; |
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229 } else { |
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230 _dtrace_monitor_probes = DTraceMonitorProbes; |
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231 _dtrace_method_probes = DTraceMethodProbes; |
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232 _dtrace_alloc_probes = DTraceAllocProbes; |
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233 } |
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234 } |
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235 |
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236 // ------------------------------------------------------------------ |
0 | 237 // helper for lazy exception creation |
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238 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { |
0 | 239 VM_ENTRY_MARK; |
240 if (handle == NULL) { | |
241 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
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242 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD); |
0 | 243 jobject objh = NULL; |
244 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
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245 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD); |
0 | 246 if (!HAS_PENDING_EXCEPTION) |
247 objh = JNIHandles::make_global(obj); | |
248 } | |
249 if (HAS_PENDING_EXCEPTION) { | |
250 CLEAR_PENDING_EXCEPTION; | |
251 } else { | |
252 handle = objh; | |
253 } | |
254 } | |
255 oop obj = JNIHandles::resolve(handle); | |
256 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
257 } | |
258 | |
259 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
260 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
261 _ArrayIndexOutOfBoundsException_instance | |
262 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
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263 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
0 | 264 } |
265 return _ArrayIndexOutOfBoundsException_instance; | |
266 } | |
267 ciInstance* ciEnv::ArrayStoreException_instance() { | |
268 if (_ArrayStoreException_instance == NULL) { | |
269 _ArrayStoreException_instance | |
270 = get_or_create_exception(_ArrayStoreException_handle, | |
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271 vmSymbols::java_lang_ArrayStoreException()); |
0 | 272 } |
273 return _ArrayStoreException_instance; | |
274 } | |
275 ciInstance* ciEnv::ClassCastException_instance() { | |
276 if (_ClassCastException_instance == NULL) { | |
277 _ClassCastException_instance | |
278 = get_or_create_exception(_ClassCastException_handle, | |
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279 vmSymbols::java_lang_ClassCastException()); |
0 | 280 } |
281 return _ClassCastException_instance; | |
282 } | |
283 | |
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284 ciInstance* ciEnv::the_null_string() { |
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285 if (_the_null_string == NULL) { |
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286 VM_ENTRY_MARK; |
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287 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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288 } |
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289 return _the_null_string; |
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290 } |
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291 |
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292 ciInstance* ciEnv::the_min_jint_string() { |
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293 if (_the_min_jint_string == NULL) { |
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294 VM_ENTRY_MARK; |
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295 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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296 } |
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297 return _the_min_jint_string; |
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298 } |
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299 |
0 | 300 // ------------------------------------------------------------------ |
301 // ciEnv::get_method_from_handle | |
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302 ciMethod* ciEnv::get_method_from_handle(Method* method) { |
0 | 303 VM_ENTRY_MARK; |
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304 return get_metadata(method)->as_method(); |
0 | 305 } |
306 | |
307 // ------------------------------------------------------------------ | |
308 // ciEnv::array_element_offset_in_bytes | |
309 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
310 VM_ENTRY_MARK; | |
311 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
312 assert(a->is_objArray(), ""); | |
313 int length = a->length(); | |
314 oop o = o_h->get_oop(); | |
315 for (int i = 0; i < length; i++) { | |
316 if (a->obj_at(i) == o) return i; | |
317 } | |
318 return -1; | |
319 } | |
320 | |
321 | |
322 // ------------------------------------------------------------------ | |
323 // ciEnv::check_klass_accessiblity | |
324 // | |
325 // Note: the logic of this method should mirror the logic of | |
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326 // ConstantPool::verify_constant_pool_resolve. |
0 | 327 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, |
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328 Klass* resolved_klass) { |
0 | 329 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { |
330 return true; | |
331 } | |
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332 if (accessing_klass->is_obj_array_klass()) { |
0 | 333 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); |
334 } | |
335 if (!accessing_klass->is_instance_klass()) { | |
336 return true; | |
337 } | |
338 | |
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339 if (resolved_klass->oop_is_objArray()) { |
0 | 340 // Find the element klass, if this is an array. |
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341 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass(); |
0 | 342 } |
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343 if (resolved_klass->oop_is_instance()) { |
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344 return Reflection::verify_class_access(accessing_klass->get_Klass(), |
0 | 345 resolved_klass, |
346 true); | |
347 } | |
348 return true; | |
349 } | |
350 | |
351 // ------------------------------------------------------------------ | |
352 // ciEnv::get_klass_by_name_impl | |
353 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
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354 constantPoolHandle cpool, |
0 | 355 ciSymbol* name, |
356 bool require_local) { | |
357 ASSERT_IN_VM; | |
358 EXCEPTION_CONTEXT; | |
359 | |
360 // Now we need to check the SystemDictionary | |
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361 Symbol* sym = name->get_symbol(); |
0 | 362 if (sym->byte_at(0) == 'L' && |
363 sym->byte_at(sym->utf8_length()-1) == ';') { | |
364 // This is a name from a signature. Strip off the trimmings. | |
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365 // Call recursive to keep scope of strippedsym. |
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366 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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367 sym->utf8_length()-2, |
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368 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); |
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369 ciSymbol* strippedname = get_symbol(strippedsym); |
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370 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); |
0 | 371 } |
372 | |
373 // Check for prior unloaded klass. The SystemDictionary's answers | |
374 // can vary over time but the compiler needs consistency. | |
375 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
376 if (unloaded_klass != NULL) { | |
377 if (require_local) return NULL; | |
378 return unloaded_klass; | |
379 } | |
380 | |
381 Handle loader(THREAD, (oop)NULL); | |
382 Handle domain(THREAD, (oop)NULL); | |
383 if (accessing_klass != NULL) { | |
384 loader = Handle(THREAD, accessing_klass->loader()); | |
385 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
386 } | |
387 | |
388 // setup up the proper type to return on OOM | |
389 ciKlass* fail_type; | |
390 if (sym->byte_at(0) == '[') { | |
391 fail_type = _unloaded_ciobjarrayklass; | |
392 } else { | |
393 fail_type = _unloaded_ciinstance_klass; | |
394 } | |
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395 KlassHandle found_klass; |
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396 { |
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397 ttyUnlocker ttyul; // release tty lock to avoid ordering problems |
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398 MutexLocker ml(Compile_lock); |
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399 Klass* kls; |
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400 if (!require_local) { |
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401 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, |
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402 KILL_COMPILE_ON_FATAL_(fail_type)); |
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403 } else { |
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404 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, |
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405 KILL_COMPILE_ON_FATAL_(fail_type)); |
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406 } |
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407 found_klass = KlassHandle(THREAD, kls); |
0 | 408 } |
409 | |
410 // If we fail to find an array klass, look again for its element type. | |
411 // The element type may be available either locally or via constraints. | |
412 // In either case, if we can find the element type in the system dictionary, | |
413 // we must build an array type around it. The CI requires array klasses | |
414 // to be loaded if their element klasses are loaded, except when memory | |
415 // is exhausted. | |
416 if (sym->byte_at(0) == '[' && | |
417 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
418 // We have an unloaded array. | |
419 // Build it on the fly if the element class exists. | |
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420 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, |
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421 sym->utf8_length()-1, |
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422 KILL_COMPILE_ON_FATAL_(fail_type)); |
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423 |
0 | 424 // Get element ciKlass recursively. |
425 ciKlass* elem_klass = | |
426 get_klass_by_name_impl(accessing_klass, | |
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427 cpool, |
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428 get_symbol(elem_sym), |
0 | 429 require_local); |
430 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
431 // Now make an array for it | |
432 return ciObjArrayKlass::make_impl(elem_klass); | |
433 } | |
434 } | |
435 | |
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436 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { |
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437 // Look inside the constant pool for pre-resolved class entries. |
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438 for (int i = cpool->length() - 1; i >= 1; i--) { |
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439 if (cpool->tag_at(i).is_klass()) { |
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440 Klass* kls = cpool->resolved_klass_at(i); |
6983 | 441 if (kls->name() == sym) { |
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442 found_klass = KlassHandle(THREAD, kls); |
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443 break; |
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444 } |
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445 } |
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446 } |
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447 } |
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448 |
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449 if (found_klass() != NULL) { |
0 | 450 // Found it. Build a CI handle. |
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451 return get_klass(found_klass()); |
0 | 452 } |
453 | |
454 if (require_local) return NULL; | |
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455 |
0 | 456 // Not yet loaded into the VM, or not governed by loader constraints. |
457 // Make a CI representative for it. | |
458 return get_unloaded_klass(accessing_klass, name); | |
459 } | |
460 | |
461 // ------------------------------------------------------------------ | |
462 // ciEnv::get_klass_by_name | |
463 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
464 ciSymbol* klass_name, | |
465 bool require_local) { | |
466 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
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467 constantPoolHandle(), |
0 | 468 klass_name, |
469 require_local);) | |
470 } | |
471 | |
472 // ------------------------------------------------------------------ | |
473 // ciEnv::get_klass_by_index_impl | |
474 // | |
475 // Implementation of get_klass_by_index. | |
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476 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
0 | 477 int index, |
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478 bool& is_accessible, |
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479 ciInstanceKlass* accessor) { |
0 | 480 EXCEPTION_CONTEXT; |
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481 KlassHandle klass; // = NULL; |
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482 Symbol* klass_name = NULL; |
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483 |
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484 if (cpool->tag_at(index).is_symbol()) { |
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485 klass_name = cpool->symbol_at(index); |
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486 } else { |
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487 // Check if it's resolved if it's not a symbol constant pool entry. |
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488 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index)); |
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489 |
0 | 490 if (klass.is_null()) { |
491 // The klass has not been inserted into the constant pool. | |
492 // Try to look it up by name. | |
493 { | |
494 // We have to lock the cpool to keep the oop from being resolved | |
495 // while we are accessing it. | |
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496 MonitorLockerEx ml(cpool->lock()); |
0 | 497 constantTag tag = cpool->tag_at(index); |
498 if (tag.is_klass()) { | |
499 // The klass has been inserted into the constant pool | |
500 // very recently. | |
501 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
502 } else { | |
503 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
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504 klass_name = cpool->unresolved_klass_at(index); |
0 | 505 } |
506 } | |
507 } | |
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508 } |
0 | 509 |
510 if (klass.is_null()) { | |
511 // Not found in constant pool. Use the name to do the lookup. | |
512 ciKlass* k = get_klass_by_name_impl(accessor, | |
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513 cpool, |
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514 get_symbol(klass_name), |
0 | 515 false); |
516 // Calculate accessibility the hard way. | |
517 if (!k->is_loaded()) { | |
518 is_accessible = false; | |
519 } else if (k->loader() != accessor->loader() && | |
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520 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { |
0 | 521 // Loaded only remotely. Not linked yet. |
522 is_accessible = false; | |
523 } else { | |
524 // Linked locally, and we must also check public/private, etc. | |
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525 is_accessible = check_klass_accessibility(accessor, k->get_Klass()); |
0 | 526 } |
527 return k; | |
528 } | |
529 | |
530 // Check for prior unloaded klass. The SystemDictionary's answers | |
531 // can vary over time but the compiler needs consistency. | |
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532 ciSymbol* name = get_symbol(klass()->name()); |
0 | 533 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
534 if (unloaded_klass != NULL) { | |
535 is_accessible = false; | |
536 return unloaded_klass; | |
537 } | |
538 | |
539 // It is known to be accessible, since it was found in the constant pool. | |
540 is_accessible = true; | |
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541 return get_klass(klass()); |
0 | 542 } |
543 | |
544 // ------------------------------------------------------------------ | |
545 // ciEnv::get_klass_by_index | |
546 // | |
547 // Get a klass from the constant pool. | |
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548 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
0 | 549 int index, |
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550 bool& is_accessible, |
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551 ciInstanceKlass* accessor) { |
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552 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
0 | 553 } |
554 | |
555 // ------------------------------------------------------------------ | |
556 // ciEnv::get_constant_by_index_impl | |
557 // | |
558 // Implementation of get_constant_by_index(). | |
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559 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
1602 | 560 int pool_index, int cache_index, |
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561 ciInstanceKlass* accessor) { |
1602 | 562 bool ignore_will_link; |
0 | 563 EXCEPTION_CONTEXT; |
1602 | 564 int index = pool_index; |
565 if (cache_index >= 0) { | |
566 assert(index < 0, "only one kind of index at a time"); | |
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567 oop obj = cpool->resolved_references()->obj_at(cache_index); |
1602 | 568 if (obj != NULL) { |
569 ciObject* ciobj = get_object(obj); | |
570 return ciConstant(T_OBJECT, ciobj); | |
571 } | |
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572 index = cpool->object_to_cp_index(cache_index); |
1602 | 573 } |
0 | 574 constantTag tag = cpool->tag_at(index); |
575 if (tag.is_int()) { | |
576 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
577 } else if (tag.is_long()) { | |
578 return ciConstant((jlong)cpool->long_at(index)); | |
579 } else if (tag.is_float()) { | |
580 return ciConstant((jfloat)cpool->float_at(index)); | |
581 } else if (tag.is_double()) { | |
582 return ciConstant((jdouble)cpool->double_at(index)); | |
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583 } else if (tag.is_string()) { |
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584 oop string = NULL; |
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585 assert(cache_index >= 0, "should have a cache index"); |
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586 if (cpool->is_pseudo_string_at(index)) { |
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587 string = cpool->pseudo_string_at(index, cache_index); |
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588 } else { |
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589 string = cpool->string_at(index, cache_index, THREAD); |
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590 if (HAS_PENDING_EXCEPTION) { |
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591 CLEAR_PENDING_EXCEPTION; |
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592 record_out_of_memory_failure(); |
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593 return ciConstant(); |
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594 } |
0 | 595 } |
596 ciObject* constant = get_object(string); | |
597 assert (constant->is_instance(), "must be an instance, or not? "); | |
598 return ciConstant(T_OBJECT, constant); | |
599 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
600 // 4881222: allow ldc to take a class type | |
1602 | 601 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
0 | 602 if (HAS_PENDING_EXCEPTION) { |
603 CLEAR_PENDING_EXCEPTION; | |
604 record_out_of_memory_failure(); | |
605 return ciConstant(); | |
606 } | |
607 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
608 "must be an instance or array klass "); | |
1602 | 609 return ciConstant(T_OBJECT, klass->java_mirror()); |
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610 } else if (tag.is_object()) { |
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611 oop obj = cpool->object_at(index); |
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612 ciObject* ciobj = get_object(obj); |
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613 return ciConstant(T_OBJECT, ciobj); |
1602 | 614 } else if (tag.is_method_type()) { |
615 // must execute Java code to link this CP entry into cache[i].f1 | |
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616 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); |
1602 | 617 ciObject* ciobj = get_unloaded_method_type_constant(signature); |
618 return ciConstant(T_OBJECT, ciobj); | |
619 } else if (tag.is_method_handle()) { | |
620 // must execute Java code to link this CP entry into cache[i].f1 | |
621 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
622 int callee_index = cpool->method_handle_klass_index_at(index); | |
623 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
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624 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); |
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625 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); |
1602 | 626 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
627 return ciConstant(T_OBJECT, ciobj); | |
0 | 628 } else { |
629 ShouldNotReachHere(); | |
630 return ciConstant(); | |
631 } | |
632 } | |
633 | |
634 // ------------------------------------------------------------------ | |
635 // ciEnv::get_constant_by_index | |
636 // | |
637 // Pull a constant out of the constant pool. How appropriate. | |
638 // | |
639 // Implementation note: this query is currently in no way cached. | |
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640 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
1602 | 641 int pool_index, int cache_index, |
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642 ciInstanceKlass* accessor) { |
1602 | 643 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
0 | 644 } |
645 | |
646 // ------------------------------------------------------------------ | |
647 // ciEnv::get_field_by_index_impl | |
648 // | |
649 // Implementation of get_field_by_index. | |
650 // | |
651 // Implementation note: the results of field lookups are cached | |
652 // in the accessor klass. | |
653 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
654 int index) { | |
655 ciConstantPoolCache* cache = accessor->field_cache(); | |
656 if (cache == NULL) { | |
657 ciField* field = new (arena()) ciField(accessor, index); | |
658 return field; | |
659 } else { | |
660 ciField* field = (ciField*)cache->get(index); | |
661 if (field == NULL) { | |
662 field = new (arena()) ciField(accessor, index); | |
663 cache->insert(index, field); | |
664 } | |
665 return field; | |
666 } | |
667 } | |
668 | |
669 // ------------------------------------------------------------------ | |
670 // ciEnv::get_field_by_index | |
671 // | |
672 // Get a field by index from a klass's constant pool. | |
673 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
674 int index) { | |
675 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
676 } | |
677 | |
678 // ------------------------------------------------------------------ | |
679 // ciEnv::lookup_method | |
680 // | |
681 // Perform an appropriate method lookup based on accessor, holder, | |
682 // name, signature, and bytecode. | |
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683 Method* ciEnv::lookup_method(InstanceKlass* accessor, |
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684 InstanceKlass* holder, |
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685 Symbol* name, |
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686 Symbol* sig, |
0 | 687 Bytecodes::Code bc) { |
688 EXCEPTION_CONTEXT; | |
689 KlassHandle h_accessor(THREAD, accessor); | |
690 KlassHandle h_holder(THREAD, holder); | |
691 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
692 methodHandle dest_method; | |
693 switch (bc) { | |
694 case Bytecodes::_invokestatic: | |
695 dest_method = | |
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696 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); |
0 | 697 break; |
698 case Bytecodes::_invokespecial: | |
699 dest_method = | |
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700 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); |
0 | 701 break; |
702 case Bytecodes::_invokeinterface: | |
703 dest_method = | |
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704 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, |
0 | 705 h_accessor, true); |
706 break; | |
707 case Bytecodes::_invokevirtual: | |
708 dest_method = | |
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709 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, |
0 | 710 h_accessor, true); |
711 break; | |
712 default: ShouldNotReachHere(); | |
713 } | |
714 | |
715 return dest_method(); | |
716 } | |
717 | |
718 | |
719 // ------------------------------------------------------------------ | |
720 // ciEnv::get_method_by_index_impl | |
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721 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
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722 int index, Bytecodes::Code bc, |
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723 ciInstanceKlass* accessor) { |
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724 if (bc == Bytecodes::_invokedynamic) { |
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725 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index); |
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726 bool is_resolved = !cpce->is_f1_null(); |
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727 // FIXME: code generation could allow for null (unlinked) call site |
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728 // The call site could be made patchable as follows: |
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729 // Load the appendix argument from the constant pool. |
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730 // Test the appendix argument and jump to a known deopt routine if it is null. |
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731 // Jump through a patchable call site, which is initially a deopt routine. |
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732 // Patch the call site to the nmethod entry point of the static compiled lambda form. |
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733 // As with other two-component call sites, both values must be independently verified. |
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734 |
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735 if (is_resolved) { |
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736 // Get the invoker Method* from the constant pool. |
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737 // (The appendix argument, if any, will be noted in the method's signature.) |
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738 Method* adapter = cpce->f1_as_method(); |
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739 return get_method(adapter); |
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740 } |
0 | 741 |
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742 // Fake a method that is equivalent to a declared method. |
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743 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass()); |
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744 ciSymbol* name = ciSymbol::invokeBasic_name(); |
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745 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); |
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746 return get_unloaded_method(holder, name, signature, accessor); |
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747 } else { |
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748 const int holder_index = cpool->klass_ref_index_at(index); |
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749 bool holder_is_accessible; |
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750 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
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751 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
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752 |
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753 // Get the method's name and signature. |
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754 Symbol* name_sym = cpool->name_ref_at(index); |
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755 Symbol* sig_sym = cpool->signature_ref_at(index); |
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756 |
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757 if (cpool->has_preresolution() |
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758 || (holder == ciEnv::MethodHandle_klass() && |
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759 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) { |
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760 // Short-circuit lookups for JSR 292-related call sites. |
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761 // That is, do not rely only on name-based lookups, because they may fail |
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762 // if the names are not resolvable in the boot class loader (7056328). |
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763 switch (bc) { |
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764 case Bytecodes::_invokevirtual: |
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765 case Bytecodes::_invokeinterface: |
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766 case Bytecodes::_invokespecial: |
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767 case Bytecodes::_invokestatic: |
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768 { |
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769 Method* m = ConstantPool::method_at_if_loaded(cpool, index); |
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770 if (m != NULL) { |
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771 return get_method(m); |
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772 } |
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773 } |
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774 break; |
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775 } |
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776 } |
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777 |
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778 if (holder_is_accessible) { // Our declared holder is loaded. |
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779 InstanceKlass* lookup = declared_holder->get_instanceKlass(); |
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780 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); |
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781 if (m != NULL && |
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782 (bc == Bytecodes::_invokestatic |
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783 ? InstanceKlass::cast(m->method_holder())->is_not_initialized() |
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784 : !InstanceKlass::cast(m->method_holder())->is_loaded())) { |
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785 m = NULL; |
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786 } |
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787 #ifdef ASSERT |
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788 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) { |
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789 m = NULL; |
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790 } |
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791 #endif |
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792 if (m != NULL) { |
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793 // We found the method. |
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794 return get_method(m); |
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795 } |
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796 } |
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797 |
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798 // Either the declared holder was not loaded, or the method could |
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799 // not be found. Create a dummy ciMethod to represent the failed |
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800 // lookup. |
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801 ciSymbol* name = get_symbol(name_sym); |
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802 ciSymbol* signature = get_symbol(sig_sym); |
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803 return get_unloaded_method(declared_holder, name, signature, accessor); |
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804 } |
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805 } |
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806 |
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807 |
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808 // ------------------------------------------------------------------ |
0 | 809 // ciEnv::get_instance_klass_for_declared_method_holder |
810 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
811 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
812 // instead of a ciInstanceKlass. For that case simply pretend that the | |
813 // declared holder is Object.clone since that's where the call will bottom out. | |
814 // A more correct fix would trickle out through many interfaces in CI, | |
815 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
816 // require checks to make sure the expected type was found. Given that this | |
817 // only occurs for clone() the more extensive fix seems like overkill so | |
818 // instead we simply smear the array type into Object. | |
819 if (method_holder->is_instance_klass()) { | |
820 return method_holder->as_instance_klass(); | |
821 } else if (method_holder->is_array_klass()) { | |
822 return current()->Object_klass(); | |
823 } else { | |
824 ShouldNotReachHere(); | |
825 } | |
826 return NULL; | |
827 } | |
828 | |
829 | |
830 // ------------------------------------------------------------------ | |
831 // ciEnv::get_method_by_index | |
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832 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
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833 int index, Bytecodes::Code bc, |
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834 ciInstanceKlass* accessor) { |
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835 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
0 | 836 } |
837 | |
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838 |
0 | 839 // ------------------------------------------------------------------ |
840 // ciEnv::name_buffer | |
841 char *ciEnv::name_buffer(int req_len) { | |
842 if (_name_buffer_len < req_len) { | |
843 if (_name_buffer == NULL) { | |
844 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
845 _name_buffer_len = req_len; | |
846 } else { | |
847 _name_buffer = | |
848 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
849 _name_buffer_len = req_len; | |
850 } | |
851 } | |
852 return _name_buffer; | |
853 } | |
854 | |
855 // ------------------------------------------------------------------ | |
856 // ciEnv::is_in_vm | |
857 bool ciEnv::is_in_vm() { | |
858 return JavaThread::current()->thread_state() == _thread_in_vm; | |
859 } | |
860 | |
861 bool ciEnv::system_dictionary_modification_counter_changed() { | |
862 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
863 } | |
864 | |
865 // ------------------------------------------------------------------ | |
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866 // ciEnv::validate_compile_task_dependencies |
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867 // |
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868 // Check for changes during compilation (e.g. class loads, evolution, |
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869 // breakpoints, call site invalidation). |
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870 void ciEnv::validate_compile_task_dependencies(ciMethod* target) { |
0 | 871 if (failing()) return; // no need for further checks |
872 | |
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873 // First, check non-klass dependencies as we might return early and |
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874 // not check klass dependencies if the system dictionary |
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875 // modification counter hasn't changed (see below). |
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876 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
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877 if (deps.is_klass_type()) continue; // skip klass dependencies |
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878 Klass* witness = deps.check_dependency(); |
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879 if (witness != NULL) { |
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880 record_failure("invalid non-klass dependency"); |
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881 return; |
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882 } |
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883 } |
0 | 884 |
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885 // Klass dependencies must be checked when the system dictionary |
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886 // changes. If logging is enabled all violated dependences will be |
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887 // recorded in the log. In debug mode check dependencies even if |
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888 // the system dictionary hasn't changed to verify that no invalid |
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889 // dependencies were inserted. Any violated dependences in this |
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890 // case are dumped to the tty. |
0 | 891 bool counter_changed = system_dictionary_modification_counter_changed(); |
892 | |
3959 | 893 bool verify_deps = trueInDebug; |
894 if (!counter_changed && !verify_deps) return; | |
895 | |
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896 int klass_violations = 0; |
0 | 897 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
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898 if (!deps.is_klass_type()) continue; // skip non-klass dependencies |
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899 Klass* witness = deps.check_dependency(); |
0 | 900 if (witness != NULL) { |
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901 klass_violations++; |
3959 | 902 if (!counter_changed) { |
903 // Dependence failed but counter didn't change. Log a message | |
904 // describing what failed and allow the assert at the end to | |
905 // trigger. | |
906 deps.print_dependency(witness); | |
907 } else if (xtty == NULL) { | |
908 // If we're not logging then a single violation is sufficient, | |
909 // otherwise we want to log all the dependences which were | |
910 // violated. | |
911 break; | |
912 } | |
0 | 913 } |
914 } | |
915 | |
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916 if (klass_violations != 0) { |
3959 | 917 #ifdef ASSERT |
918 if (!counter_changed && !PrintCompilation) { | |
919 // Print out the compile task that failed | |
920 _task->print_line(); | |
921 } | |
922 #endif | |
0 | 923 assert(counter_changed, "failed dependencies, but counter didn't change"); |
924 record_failure("concurrent class loading"); | |
925 } | |
926 } | |
927 | |
928 // ------------------------------------------------------------------ | |
929 // ciEnv::register_method | |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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930 nmethod* ciEnv::register_method(ciMethod* target, |
0 | 931 int entry_bci, |
932 CodeOffsets* offsets, | |
933 int orig_pc_offset, | |
934 CodeBuffer* code_buffer, | |
935 int frame_words, | |
936 OopMapSet* oop_map_set, | |
937 ExceptionHandlerTable* handler_table, | |
938 ImplicitExceptionTable* inc_table, | |
939 AbstractCompiler* compiler, | |
940 int comp_level, | |
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941 bool has_unsafe_access, |
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942 bool has_wide_vectors) { |
0 | 943 VM_ENTRY_MARK; |
944 nmethod* nm = NULL; | |
945 { | |
946 // To prevent compile queue updates. | |
947 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
948 | |
949 // Prevent SystemDictionary::add_to_hierarchy from running | |
950 // and invalidating our dependencies until we install this method. | |
951 MutexLocker ml(Compile_lock); | |
952 | |
780
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953 // Change in Jvmti state may invalidate compilation. |
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954 if (!failing() && |
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955 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
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956 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
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957 (!jvmti_can_access_local_variables() && |
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958 JvmtiExport::can_access_local_variables()) || |
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959 (!jvmti_can_post_on_exceptions() && |
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960 JvmtiExport::can_post_on_exceptions()) )) { |
780
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961 record_failure("Jvmti state change invalidated dependencies"); |
0 | 962 } |
963 | |
780
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964 // Change in DTrace flags may invalidate compilation. |
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965 if (!failing() && |
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966 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
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967 (!dtrace_method_probes() && DTraceMethodProbes) || |
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968 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
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969 record_failure("DTrace flags change invalidated dependencies"); |
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970 } |
0 | 971 |
780
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972 if (!failing()) { |
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973 if (log() != NULL) { |
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974 // Log the dependencies which this compilation declares. |
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975 dependencies()->log_all_dependencies(); |
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976 } |
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977 |
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978 // Encode the dependencies now, so we can check them right away. |
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979 dependencies()->encode_content_bytes(); |
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980 |
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981 // Check for {class loads, evolution, breakpoints, ...} during compilation |
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982 validate_compile_task_dependencies(target); |
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983 } |
0 | 984 |
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985 methodHandle method(THREAD, target->get_Method()); |
0 | 986 |
987 if (failing()) { | |
988 // While not a true deoptimization, it is a preemptive decompile. | |
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989 MethodData* mdo = method()->method_data(); |
0 | 990 if (mdo != NULL) { |
991 mdo->inc_decompile_count(); | |
992 } | |
993 | |
994 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
995 // If the code buffer is created on each compile attempt | |
996 // as in C2, then it must be freed. | |
997 code_buffer->free_blob(); | |
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998 return NULL; |
0 | 999 } |
1000 | |
1001 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
1002 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
1003 | |
1004 nm = nmethod::new_nmethod(method, | |
1005 compile_id(), | |
1006 entry_bci, | |
1007 offsets, | |
1008 orig_pc_offset, | |
1009 debug_info(), dependencies(), code_buffer, | |
1010 frame_words, oop_map_set, | |
1011 handler_table, inc_table, | |
1012 compiler, comp_level); | |
1013 | |
1014 // Free codeBlobs | |
1015 code_buffer->free_blob(); | |
1016 | |
1017 // stress test 6243940 by immediately making the method | |
1018 // non-entrant behind the system's back. This has serious | |
1019 // side effects on the code cache and is not meant for | |
1020 // general stress testing | |
1021 if (nm != NULL && StressNonEntrant) { | |
1022 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1023 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
1024 SharedRuntime::get_handle_wrong_method_stub()); | |
1025 } | |
1026 | |
1027 if (nm == NULL) { | |
1028 // The CodeCache is full. Print out warning and disable compilation. | |
1029 record_failure("code cache is full"); | |
1202 | 1030 { |
1031 MutexUnlocker ml(Compile_lock); | |
1032 MutexUnlocker locker(MethodCompileQueue_lock); | |
1033 CompileBroker::handle_full_code_cache(); | |
0 | 1034 } |
1035 } else { | |
1036 nm->set_has_unsafe_access(has_unsafe_access); | |
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1037 nm->set_has_wide_vectors(has_wide_vectors); |
0 | 1038 |
1039 // Record successful registration. | |
1040 // (Put nm into the task handle *before* publishing to the Java heap.) | |
1041 if (task() != NULL) task()->set_code(nm); | |
1042 | |
1043 if (entry_bci == InvocationEntryBci) { | |
1783 | 1044 if (TieredCompilation) { |
1045 // If there is an old version we're done with it | |
1046 nmethod* old = method->code(); | |
1047 if (TraceMethodReplacement && old != NULL) { | |
1048 ResourceMark rm; | |
1049 char *method_name = method->name_and_sig_as_C_string(); | |
1050 tty->print_cr("Replacing method %s", method_name); | |
1051 } | |
1052 if (old != NULL ) { | |
1053 old->make_not_entrant(); | |
1054 } | |
0 | 1055 } |
1056 if (TraceNMethodInstalls ) { | |
1057 ResourceMark rm; | |
1058 char *method_name = method->name_and_sig_as_C_string(); | |
1059 ttyLocker ttyl; | |
1060 tty->print_cr("Installing method (%d) %s ", | |
1061 comp_level, | |
1062 method_name); | |
1063 } | |
1064 // Allow the code to be executed | |
1065 method->set_code(method, nm); | |
1066 } else { | |
1067 if (TraceNMethodInstalls ) { | |
1068 ResourceMark rm; | |
1069 char *method_name = method->name_and_sig_as_C_string(); | |
1070 ttyLocker ttyl; | |
1071 tty->print_cr("Installing osr method (%d) %s @ %d", | |
1072 comp_level, | |
1073 method_name, | |
1074 entry_bci); | |
1075 } | |
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1076 InstanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); |
0 | 1077 |
1078 } | |
1079 } | |
1080 } | |
1081 // JVMTI -- compiled method notification (must be done outside lock) | |
1082 if (nm != NULL) { | |
1083 nm->post_compiled_method_load_event(); | |
1084 } | |
1085 | |
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1086 return nm; |
0 | 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) { | |
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1114 _num_inlined_bytecodes += method->code_size_for_inlining(); |
0 | 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 { | |
6843 | 1147 log()->elem("method_not_compilable_at_tier level='%d'", |
1148 current()->task()->comp_level()); | |
0 | 1149 } |
1150 } | |
1151 _compilable = new_compilable; | |
1152 | |
1153 // Reset failure reason; this one is more important. | |
1154 _failure_reason = NULL; | |
1155 record_failure(reason); | |
1156 } | |
1157 } | |
1158 | |
1159 // ------------------------------------------------------------------ | |
1160 // ciEnv::record_out_of_memory_failure() | |
1161 void ciEnv::record_out_of_memory_failure() { | |
1162 // If memory is low, we stop compiling methods. | |
1163 record_method_not_compilable("out of memory"); | |
1164 } | |
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1165 |
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1166 fileStream* ciEnv::_replay_data_stream = NULL; |
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1167 |
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1168 void ciEnv::dump_replay_data() { |
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1169 VM_ENTRY_MARK; |
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1170 MutexLocker ml(Compile_lock); |
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1171 if (_replay_data_stream == NULL) { |
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1172 _replay_data_stream = new (ResourceObj::C_HEAP, mtCompiler) fileStream(ReplayDataFile); |
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1173 if (_replay_data_stream == NULL) { |
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1174 fatal(err_msg("Can't open %s for replay data", ReplayDataFile)); |
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1175 } |
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1176 } |
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1177 dump_replay_data(_replay_data_stream); |
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1178 } |
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1179 |
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1180 |
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1181 void ciEnv::dump_replay_data(outputStream* out) { |
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1182 ASSERT_IN_VM; |
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1183 |
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1184 #if INCLUDE_JVMTI |
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1185 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); |
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1186 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); |
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1187 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); |
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1188 #endif // INCLUDE_JVMTI |
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1189 |
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1190 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); |
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1191 out->print_cr("# %d ciObject found", objects->length()); |
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1192 for (int i = 0; i < objects->length(); i++) { |
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1193 objects->at(i)->dump_replay_data(out); |
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1194 } |
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1195 Method* method = task()->method(); |
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1196 int entry_bci = task()->osr_bci(); |
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1197 // Klass holder = method->method_holder(); |
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1198 out->print_cr("compile %s %s %s %d", |
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1199 method->klass_name()->as_quoted_ascii(), |
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1200 method->name()->as_quoted_ascii(), |
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1201 method->signature()->as_quoted_ascii(), |
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1202 entry_bci); |
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1203 out->flush(); |
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1204 } |