Mercurial > hg > graal-jvmci-8
annotate src/share/vm/ci/ciEnv.cpp @ 1930:2d26b0046e0d
Merge.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
---|---|
date | Tue, 30 Nov 2010 14:53:30 +0100 |
parents | 5571b97fc1ec d5d065957597 |
children | 06f017f7daa7 |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1507
diff
changeset
|
2 * Copyright (c) 1999, 2010, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1507
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1507
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1507
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_ciEnv.cpp.incl" | |
27 | |
28 // ciEnv | |
29 // | |
30 // This class is the top level broker for requests from the compiler | |
31 // to the VM. | |
32 | |
33 ciObject* ciEnv::_null_object_instance; | |
34 ciMethodKlass* ciEnv::_method_klass_instance; | |
35 ciSymbolKlass* ciEnv::_symbol_klass_instance; | |
36 ciKlassKlass* ciEnv::_klass_klass_instance; | |
37 ciInstanceKlassKlass* ciEnv::_instance_klass_klass_instance; | |
38 ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance; | |
39 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance; | |
40 | |
1142 | 41 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
42 WK_KLASSES_DO(WK_KLASS_DEFN) | |
43 #undef WK_KLASS_DEFN | |
0 | 44 |
45 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; | |
46 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; | |
47 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; | |
48 | |
49 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; | |
50 jobject ciEnv::_ArrayStoreException_handle = NULL; | |
51 jobject ciEnv::_ClassCastException_handle = NULL; | |
52 | |
53 #ifndef PRODUCT | |
54 static bool firstEnv = true; | |
55 #endif /* PRODUCT */ | |
56 | |
57 // ------------------------------------------------------------------ | |
58 // ciEnv::ciEnv | |
59 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { | |
60 VM_ENTRY_MARK; | |
61 | |
62 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
63 thread->set_env(this); | |
64 assert(ciEnv::current() == this, "sanity"); | |
65 | |
66 _oop_recorder = NULL; | |
67 _debug_info = NULL; | |
68 _dependencies = NULL; | |
69 _failure_reason = NULL; | |
70 _compilable = MethodCompilable; | |
71 _break_at_compile = false; | |
72 _compiler_data = NULL; | |
73 #ifndef PRODUCT | |
74 assert(!firstEnv, "not initialized properly"); | |
75 #endif /* !PRODUCT */ | |
76 | |
77 _system_dictionary_modification_counter = system_dictionary_modification_counter; | |
78 _num_inlined_bytecodes = 0; | |
79 assert(task == NULL || thread->task() == task, "sanity"); | |
80 _task = task; | |
81 _log = NULL; | |
82 | |
83 // Temporary buffer for creating symbols and such. | |
84 _name_buffer = NULL; | |
85 _name_buffer_len = 0; | |
86 | |
87 _arena = &_ciEnv_arena; | |
88 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
89 | |
90 // Preload commonly referenced system ciObjects. | |
91 | |
92 // During VM initialization, these instances have not yet been created. | |
93 // Assertions ensure that these instances are not accessed before | |
94 // their initialization. | |
95 | |
96 assert(Universe::is_fully_initialized(), "should be complete"); | |
97 | |
98 oop o = Universe::null_ptr_exception_instance(); | |
99 assert(o != NULL, "should have been initialized"); | |
100 _NullPointerException_instance = get_object(o)->as_instance(); | |
101 o = Universe::arithmetic_exception_instance(); | |
102 assert(o != NULL, "should have been initialized"); | |
103 _ArithmeticException_instance = get_object(o)->as_instance(); | |
104 | |
105 _ArrayIndexOutOfBoundsException_instance = NULL; | |
106 _ArrayStoreException_instance = NULL; | |
107 _ClassCastException_instance = NULL; | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
108 _the_null_string = NULL; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
109 _the_min_jint_string = NULL; |
0 | 110 } |
111 | |
112 ciEnv::ciEnv(Arena* arena) { | |
113 ASSERT_IN_VM; | |
114 | |
115 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. | |
116 CompilerThread* current_thread = CompilerThread::current(); | |
117 assert(current_thread->env() == NULL, "must be"); | |
118 current_thread->set_env(this); | |
119 assert(ciEnv::current() == this, "sanity"); | |
120 | |
121 _oop_recorder = NULL; | |
122 _debug_info = NULL; | |
123 _dependencies = NULL; | |
124 _failure_reason = NULL; | |
125 _compilable = MethodCompilable_never; | |
126 _break_at_compile = false; | |
127 _compiler_data = NULL; | |
128 #ifndef PRODUCT | |
129 assert(firstEnv, "must be first"); | |
130 firstEnv = false; | |
131 #endif /* !PRODUCT */ | |
132 | |
133 _system_dictionary_modification_counter = 0; | |
134 _num_inlined_bytecodes = 0; | |
135 _task = NULL; | |
136 _log = NULL; | |
137 | |
138 // Temporary buffer for creating symbols and such. | |
139 _name_buffer = NULL; | |
140 _name_buffer_len = 0; | |
141 | |
142 _arena = arena; | |
143 _factory = new (_arena) ciObjectFactory(_arena, 128); | |
144 | |
145 // Preload commonly referenced system ciObjects. | |
146 | |
147 // During VM initialization, these instances have not yet been created. | |
148 // Assertions ensure that these instances are not accessed before | |
149 // their initialization. | |
150 | |
151 assert(Universe::is_fully_initialized(), "must be"); | |
152 | |
153 oop o = Universe::null_ptr_exception_instance(); | |
154 assert(o != NULL, "should have been initialized"); | |
155 _NullPointerException_instance = get_object(o)->as_instance(); | |
156 o = Universe::arithmetic_exception_instance(); | |
157 assert(o != NULL, "should have been initialized"); | |
158 _ArithmeticException_instance = get_object(o)->as_instance(); | |
159 | |
160 _ArrayIndexOutOfBoundsException_instance = NULL; | |
161 _ArrayStoreException_instance = NULL; | |
162 _ClassCastException_instance = NULL; | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
163 _the_null_string = NULL; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
164 _the_min_jint_string = NULL; |
0 | 165 } |
166 | |
167 ciEnv::~ciEnv() { | |
1478
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1397
diff
changeset
|
168 _factory->cleanup(); |
0 | 169 CompilerThread* current_thread = CompilerThread::current(); |
170 current_thread->set_env(NULL); | |
171 } | |
172 | |
173 // ------------------------------------------------------------------ | |
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
174 // Cache Jvmti state |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
175 void ciEnv::cache_jvmti_state() { |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
176 VM_ENTRY_MARK; |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
177 // Get Jvmti capabilities under lock to get consistant values. |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
178 MutexLocker mu(JvmtiThreadState_lock); |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
179 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
180 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
1213
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
1142
diff
changeset
|
181 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
182 } |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
183 |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
184 // ------------------------------------------------------------------ |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
185 // Cache DTrace flags |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
186 void ciEnv::cache_dtrace_flags() { |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
187 // Need lock? |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
188 _dtrace_extended_probes = ExtendedDTraceProbes; |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
189 if (_dtrace_extended_probes) { |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
190 _dtrace_monitor_probes = true; |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
191 _dtrace_method_probes = true; |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
192 _dtrace_alloc_probes = true; |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
193 } else { |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
194 _dtrace_monitor_probes = DTraceMonitorProbes; |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
195 _dtrace_method_probes = DTraceMethodProbes; |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
196 _dtrace_alloc_probes = DTraceAllocProbes; |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
197 } |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
198 } |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
199 |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
200 // ------------------------------------------------------------------ |
0 | 201 // helper for lazy exception creation |
202 ciInstance* ciEnv::get_or_create_exception(jobject& handle, symbolHandle name) { | |
203 VM_ENTRY_MARK; | |
204 if (handle == NULL) { | |
205 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. | |
206 klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); | |
207 jobject objh = NULL; | |
208 if (!HAS_PENDING_EXCEPTION && k != NULL) { | |
209 oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); | |
210 if (!HAS_PENDING_EXCEPTION) | |
211 objh = JNIHandles::make_global(obj); | |
212 } | |
213 if (HAS_PENDING_EXCEPTION) { | |
214 CLEAR_PENDING_EXCEPTION; | |
215 } else { | |
216 handle = objh; | |
217 } | |
218 } | |
219 oop obj = JNIHandles::resolve(handle); | |
220 return obj == NULL? NULL: get_object(obj)->as_instance(); | |
221 } | |
222 | |
223 // ------------------------------------------------------------------ | |
224 // ciEnv::ArrayIndexOutOfBoundsException_instance, etc. | |
225 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { | |
226 if (_ArrayIndexOutOfBoundsException_instance == NULL) { | |
227 _ArrayIndexOutOfBoundsException_instance | |
228 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, | |
229 vmSymbolHandles::java_lang_ArrayIndexOutOfBoundsException()); | |
230 } | |
231 return _ArrayIndexOutOfBoundsException_instance; | |
232 } | |
233 ciInstance* ciEnv::ArrayStoreException_instance() { | |
234 if (_ArrayStoreException_instance == NULL) { | |
235 _ArrayStoreException_instance | |
236 = get_or_create_exception(_ArrayStoreException_handle, | |
237 vmSymbolHandles::java_lang_ArrayStoreException()); | |
238 } | |
239 return _ArrayStoreException_instance; | |
240 } | |
241 ciInstance* ciEnv::ClassCastException_instance() { | |
242 if (_ClassCastException_instance == NULL) { | |
243 _ClassCastException_instance | |
244 = get_or_create_exception(_ClassCastException_handle, | |
245 vmSymbolHandles::java_lang_ClassCastException()); | |
246 } | |
247 return _ClassCastException_instance; | |
248 } | |
249 | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
250 ciInstance* ciEnv::the_null_string() { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
251 if (_the_null_string == NULL) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
252 VM_ENTRY_MARK; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
253 _the_null_string = get_object(Universe::the_null_string())->as_instance(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
254 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
255 return _the_null_string; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
256 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
257 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
258 ciInstance* ciEnv::the_min_jint_string() { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
259 if (_the_min_jint_string == NULL) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
260 VM_ENTRY_MARK; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
261 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
262 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
263 return _the_min_jint_string; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
264 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
1059
diff
changeset
|
265 |
0 | 266 // ------------------------------------------------------------------ |
267 // ciEnv::get_method_from_handle | |
268 ciMethod* ciEnv::get_method_from_handle(jobject method) { | |
269 VM_ENTRY_MARK; | |
270 return get_object(JNIHandles::resolve(method))->as_method(); | |
271 } | |
272 | |
273 // ------------------------------------------------------------------ | |
274 // ciEnv::make_array | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
844
diff
changeset
|
275 ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
0 | 276 VM_ENTRY_MARK; |
277 int length = objects->length(); | |
278 objArrayOop a = oopFactory::new_system_objArray(length, THREAD); | |
279 if (HAS_PENDING_EXCEPTION) { | |
280 CLEAR_PENDING_EXCEPTION; | |
281 record_out_of_memory_failure(); | |
282 return NULL; | |
283 } | |
284 for (int i = 0; i < length; i++) { | |
285 a->obj_at_put(i, objects->at(i)->get_oop()); | |
286 } | |
287 assert(a->is_perm(), ""); | |
288 return get_object(a)->as_array(); | |
289 } | |
290 | |
291 | |
292 // ------------------------------------------------------------------ | |
293 // ciEnv::array_element_offset_in_bytes | |
294 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { | |
295 VM_ENTRY_MARK; | |
296 objArrayOop a = (objArrayOop)a_h->get_oop(); | |
297 assert(a->is_objArray(), ""); | |
298 int length = a->length(); | |
299 oop o = o_h->get_oop(); | |
300 for (int i = 0; i < length; i++) { | |
301 if (a->obj_at(i) == o) return i; | |
302 } | |
303 return -1; | |
304 } | |
305 | |
306 | |
307 // ------------------------------------------------------------------ | |
308 // ciEnv::check_klass_accessiblity | |
309 // | |
310 // Note: the logic of this method should mirror the logic of | |
311 // constantPoolOopDesc::verify_constant_pool_resolve. | |
312 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, | |
313 klassOop resolved_klass) { | |
314 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { | |
315 return true; | |
316 } | |
317 if (accessing_klass->is_obj_array()) { | |
318 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); | |
319 } | |
320 if (!accessing_klass->is_instance_klass()) { | |
321 return true; | |
322 } | |
323 | |
324 if (resolved_klass->klass_part()->oop_is_objArray()) { | |
325 // Find the element klass, if this is an array. | |
326 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); | |
327 } | |
328 if (resolved_klass->klass_part()->oop_is_instance()) { | |
329 return Reflection::verify_class_access(accessing_klass->get_klassOop(), | |
330 resolved_klass, | |
331 true); | |
332 } | |
333 return true; | |
334 } | |
335 | |
336 // ------------------------------------------------------------------ | |
337 // ciEnv::get_klass_by_name_impl | |
338 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, | |
339 ciSymbol* name, | |
340 bool require_local) { | |
341 ASSERT_IN_VM; | |
342 EXCEPTION_CONTEXT; | |
343 | |
344 // Now we need to check the SystemDictionary | |
345 symbolHandle sym(THREAD, name->get_symbolOop()); | |
346 if (sym->byte_at(0) == 'L' && | |
347 sym->byte_at(sym->utf8_length()-1) == ';') { | |
348 // This is a name from a signature. Strip off the trimmings. | |
349 sym = oopFactory::new_symbol_handle(sym->as_utf8()+1, | |
350 sym->utf8_length()-2, | |
351 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); | |
352 name = get_object(sym())->as_symbol(); | |
353 } | |
354 | |
355 // Check for prior unloaded klass. The SystemDictionary's answers | |
356 // can vary over time but the compiler needs consistency. | |
357 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); | |
358 if (unloaded_klass != NULL) { | |
359 if (require_local) return NULL; | |
360 return unloaded_klass; | |
361 } | |
362 | |
363 Handle loader(THREAD, (oop)NULL); | |
364 Handle domain(THREAD, (oop)NULL); | |
365 if (accessing_klass != NULL) { | |
366 loader = Handle(THREAD, accessing_klass->loader()); | |
367 domain = Handle(THREAD, accessing_klass->protection_domain()); | |
368 } | |
369 | |
370 // setup up the proper type to return on OOM | |
371 ciKlass* fail_type; | |
372 if (sym->byte_at(0) == '[') { | |
373 fail_type = _unloaded_ciobjarrayklass; | |
374 } else { | |
375 fail_type = _unloaded_ciinstance_klass; | |
376 } | |
377 klassOop found_klass; | |
378 if (!require_local) { | |
379 found_klass = | |
380 SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, | |
381 KILL_COMPILE_ON_FATAL_(fail_type)); | |
382 } else { | |
383 found_klass = | |
384 SystemDictionary::find_instance_or_array_klass(sym, loader, domain, | |
385 KILL_COMPILE_ON_FATAL_(fail_type)); | |
386 } | |
387 | |
388 // If we fail to find an array klass, look again for its element type. | |
389 // The element type may be available either locally or via constraints. | |
390 // In either case, if we can find the element type in the system dictionary, | |
391 // we must build an array type around it. The CI requires array klasses | |
392 // to be loaded if their element klasses are loaded, except when memory | |
393 // is exhausted. | |
394 if (sym->byte_at(0) == '[' && | |
395 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { | |
396 // We have an unloaded array. | |
397 // Build it on the fly if the element class exists. | |
398 symbolOop elem_sym = oopFactory::new_symbol(sym->as_utf8()+1, | |
399 sym->utf8_length()-1, | |
400 KILL_COMPILE_ON_FATAL_(fail_type)); | |
401 // Get element ciKlass recursively. | |
402 ciKlass* elem_klass = | |
403 get_klass_by_name_impl(accessing_klass, | |
404 get_object(elem_sym)->as_symbol(), | |
405 require_local); | |
406 if (elem_klass != NULL && elem_klass->is_loaded()) { | |
407 // Now make an array for it | |
408 return ciObjArrayKlass::make_impl(elem_klass); | |
409 } | |
410 } | |
411 | |
412 if (found_klass != NULL) { | |
413 // Found it. Build a CI handle. | |
414 return get_object(found_klass)->as_klass(); | |
415 } | |
416 | |
417 if (require_local) return NULL; | |
418 // Not yet loaded into the VM, or not governed by loader constraints. | |
419 // Make a CI representative for it. | |
420 return get_unloaded_klass(accessing_klass, name); | |
421 } | |
422 | |
423 // ------------------------------------------------------------------ | |
424 // ciEnv::get_klass_by_name | |
425 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, | |
426 ciSymbol* klass_name, | |
427 bool require_local) { | |
428 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, | |
429 klass_name, | |
430 require_local);) | |
431 } | |
432 | |
433 // ------------------------------------------------------------------ | |
434 // ciEnv::get_klass_by_index_impl | |
435 // | |
436 // Implementation of get_klass_by_index. | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
437 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
0 | 438 int index, |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
439 bool& is_accessible, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
440 ciInstanceKlass* accessor) { |
0 | 441 EXCEPTION_CONTEXT; |
442 KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); | |
443 symbolHandle klass_name; | |
444 if (klass.is_null()) { | |
445 // The klass has not been inserted into the constant pool. | |
446 // Try to look it up by name. | |
447 { | |
448 // We have to lock the cpool to keep the oop from being resolved | |
449 // while we are accessing it. | |
450 ObjectLocker ol(cpool, THREAD); | |
451 | |
452 constantTag tag = cpool->tag_at(index); | |
453 if (tag.is_klass()) { | |
454 // The klass has been inserted into the constant pool | |
455 // very recently. | |
456 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); | |
457 } else if (tag.is_symbol()) { | |
458 klass_name = symbolHandle(THREAD, cpool->symbol_at(index)); | |
459 } else { | |
460 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); | |
461 klass_name = symbolHandle(THREAD, cpool->unresolved_klass_at(index)); | |
462 } | |
463 } | |
464 } | |
465 | |
466 if (klass.is_null()) { | |
467 // Not found in constant pool. Use the name to do the lookup. | |
468 ciKlass* k = get_klass_by_name_impl(accessor, | |
469 get_object(klass_name())->as_symbol(), | |
470 false); | |
471 // Calculate accessibility the hard way. | |
472 if (!k->is_loaded()) { | |
473 is_accessible = false; | |
474 } else if (k->loader() != accessor->loader() && | |
475 get_klass_by_name_impl(accessor, k->name(), true) == NULL) { | |
476 // Loaded only remotely. Not linked yet. | |
477 is_accessible = false; | |
478 } else { | |
479 // Linked locally, and we must also check public/private, etc. | |
480 is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); | |
481 } | |
482 return k; | |
483 } | |
484 | |
485 // Check for prior unloaded klass. The SystemDictionary's answers | |
486 // can vary over time but the compiler needs consistency. | |
487 ciSymbol* name = get_object(klass()->klass_part()->name())->as_symbol(); | |
488 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); | |
489 if (unloaded_klass != NULL) { | |
490 is_accessible = false; | |
491 return unloaded_klass; | |
492 } | |
493 | |
494 // It is known to be accessible, since it was found in the constant pool. | |
495 is_accessible = true; | |
496 return get_object(klass())->as_klass(); | |
497 } | |
498 | |
499 // ------------------------------------------------------------------ | |
500 // ciEnv::get_klass_by_index | |
501 // | |
502 // Get a klass from the constant pool. | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
503 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
0 | 504 int index, |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
505 bool& is_accessible, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
506 ciInstanceKlass* accessor) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
507 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
0 | 508 } |
509 | |
510 // ------------------------------------------------------------------ | |
511 // ciEnv::get_constant_by_index_impl | |
512 // | |
513 // Implementation of get_constant_by_index(). | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
514 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
1602 | 515 int pool_index, int cache_index, |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
516 ciInstanceKlass* accessor) { |
1602 | 517 bool ignore_will_link; |
0 | 518 EXCEPTION_CONTEXT; |
1602 | 519 int index = pool_index; |
520 if (cache_index >= 0) { | |
521 assert(index < 0, "only one kind of index at a time"); | |
522 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index); | |
523 index = cpc_entry->constant_pool_index(); | |
524 oop obj = cpc_entry->f1(); | |
525 if (obj != NULL) { | |
526 assert(obj->is_instance(), "must be an instance"); | |
527 ciObject* ciobj = get_object(obj); | |
528 return ciConstant(T_OBJECT, ciobj); | |
529 } | |
530 } | |
0 | 531 constantTag tag = cpool->tag_at(index); |
532 if (tag.is_int()) { | |
533 return ciConstant(T_INT, (jint)cpool->int_at(index)); | |
534 } else if (tag.is_long()) { | |
535 return ciConstant((jlong)cpool->long_at(index)); | |
536 } else if (tag.is_float()) { | |
537 return ciConstant((jfloat)cpool->float_at(index)); | |
538 } else if (tag.is_double()) { | |
539 return ciConstant((jdouble)cpool->double_at(index)); | |
540 } else if (tag.is_string() || tag.is_unresolved_string()) { | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
541 oop string = NULL; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
542 if (cpool->is_pseudo_string_at(index)) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
543 string = cpool->pseudo_string_at(index); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
544 } else { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
545 string = cpool->string_at(index, THREAD); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
546 if (HAS_PENDING_EXCEPTION) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
547 CLEAR_PENDING_EXCEPTION; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
548 record_out_of_memory_failure(); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
549 return ciConstant(); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
0
diff
changeset
|
550 } |
0 | 551 } |
552 ciObject* constant = get_object(string); | |
553 assert (constant->is_instance(), "must be an instance, or not? "); | |
554 return ciConstant(T_OBJECT, constant); | |
555 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
556 // 4881222: allow ldc to take a class type | |
1602 | 557 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
0 | 558 if (HAS_PENDING_EXCEPTION) { |
559 CLEAR_PENDING_EXCEPTION; | |
560 record_out_of_memory_failure(); | |
561 return ciConstant(); | |
562 } | |
563 assert (klass->is_instance_klass() || klass->is_array_klass(), | |
564 "must be an instance or array klass "); | |
1602 | 565 return ciConstant(T_OBJECT, klass->java_mirror()); |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
566 } else if (tag.is_object()) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
567 oop obj = cpool->object_at(index); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
568 assert(obj->is_instance(), "must be an instance"); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
569 ciObject* ciobj = get_object(obj); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
570 return ciConstant(T_OBJECT, ciobj); |
1602 | 571 } else if (tag.is_method_type()) { |
572 // must execute Java code to link this CP entry into cache[i].f1 | |
573 ciSymbol* signature = get_object(cpool->method_type_signature_at(index))->as_symbol(); | |
574 ciObject* ciobj = get_unloaded_method_type_constant(signature); | |
575 return ciConstant(T_OBJECT, ciobj); | |
576 } else if (tag.is_method_handle()) { | |
577 // must execute Java code to link this CP entry into cache[i].f1 | |
578 int ref_kind = cpool->method_handle_ref_kind_at(index); | |
579 int callee_index = cpool->method_handle_klass_index_at(index); | |
580 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); | |
581 ciSymbol* name = get_object(cpool->method_handle_name_ref_at(index))->as_symbol(); | |
582 ciSymbol* signature = get_object(cpool->method_handle_signature_ref_at(index))->as_symbol(); | |
583 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); | |
584 return ciConstant(T_OBJECT, ciobj); | |
0 | 585 } else { |
586 ShouldNotReachHere(); | |
587 return ciConstant(); | |
588 } | |
589 } | |
590 | |
591 // ------------------------------------------------------------------ | |
592 // ciEnv::get_constant_by_index | |
593 // | |
594 // Pull a constant out of the constant pool. How appropriate. | |
595 // | |
596 // Implementation note: this query is currently in no way cached. | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
597 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
1602 | 598 int pool_index, int cache_index, |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
599 ciInstanceKlass* accessor) { |
1602 | 600 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
0 | 601 } |
602 | |
603 // ------------------------------------------------------------------ | |
604 // ciEnv::get_field_by_index_impl | |
605 // | |
606 // Implementation of get_field_by_index. | |
607 // | |
608 // Implementation note: the results of field lookups are cached | |
609 // in the accessor klass. | |
610 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, | |
611 int index) { | |
612 ciConstantPoolCache* cache = accessor->field_cache(); | |
613 if (cache == NULL) { | |
614 ciField* field = new (arena()) ciField(accessor, index); | |
615 return field; | |
616 } else { | |
617 ciField* field = (ciField*)cache->get(index); | |
618 if (field == NULL) { | |
619 field = new (arena()) ciField(accessor, index); | |
620 cache->insert(index, field); | |
621 } | |
622 return field; | |
623 } | |
624 } | |
625 | |
626 // ------------------------------------------------------------------ | |
627 // ciEnv::get_field_by_index | |
628 // | |
629 // Get a field by index from a klass's constant pool. | |
630 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, | |
631 int index) { | |
632 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) | |
633 } | |
634 | |
635 // ------------------------------------------------------------------ | |
636 // ciEnv::lookup_method | |
637 // | |
638 // Perform an appropriate method lookup based on accessor, holder, | |
639 // name, signature, and bytecode. | |
640 methodOop ciEnv::lookup_method(instanceKlass* accessor, | |
641 instanceKlass* holder, | |
642 symbolOop name, | |
643 symbolOop sig, | |
644 Bytecodes::Code bc) { | |
645 EXCEPTION_CONTEXT; | |
646 KlassHandle h_accessor(THREAD, accessor); | |
647 KlassHandle h_holder(THREAD, holder); | |
648 symbolHandle h_name(THREAD, name); | |
649 symbolHandle h_sig(THREAD, sig); | |
650 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); | |
651 methodHandle dest_method; | |
652 switch (bc) { | |
653 case Bytecodes::_invokestatic: | |
654 dest_method = | |
655 LinkResolver::resolve_static_call_or_null(h_holder, h_name, h_sig, h_accessor); | |
656 break; | |
657 case Bytecodes::_invokespecial: | |
658 dest_method = | |
659 LinkResolver::resolve_special_call_or_null(h_holder, h_name, h_sig, h_accessor); | |
660 break; | |
661 case Bytecodes::_invokeinterface: | |
662 dest_method = | |
663 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, h_name, h_sig, | |
664 h_accessor, true); | |
665 break; | |
666 case Bytecodes::_invokevirtual: | |
667 dest_method = | |
668 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, h_name, h_sig, | |
669 h_accessor, true); | |
670 break; | |
671 default: ShouldNotReachHere(); | |
672 } | |
673 | |
674 return dest_method(); | |
675 } | |
676 | |
677 | |
678 // ------------------------------------------------------------------ | |
679 // ciEnv::get_method_by_index_impl | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
680 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
681 int index, Bytecodes::Code bc, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
682 ciInstanceKlass* accessor) { |
0 | 683 int holder_index = cpool->klass_ref_index_at(index); |
684 bool holder_is_accessible; | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
685 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
0 | 686 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
687 | |
688 // Get the method's name and signature. | |
689 symbolOop name_sym = cpool->name_ref_at(index); | |
1059
389049f3f393
6858164: invokedynamic code needs some cleanup (post-6655638)
jrose
parents:
989
diff
changeset
|
690 symbolOop sig_sym = cpool->signature_ref_at(index); |
0 | 691 |
692 if (holder_is_accessible) { // Our declared holder is loaded. | |
693 instanceKlass* lookup = declared_holder->get_instanceKlass(); | |
694 methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); | |
695 if (m != NULL) { | |
696 // We found the method. | |
697 return get_object(m)->as_method(); | |
698 } | |
699 } | |
700 | |
701 // Either the declared holder was not loaded, or the method could | |
702 // not be found. Create a dummy ciMethod to represent the failed | |
703 // lookup. | |
704 | |
705 return get_unloaded_method(declared_holder, | |
706 get_object(name_sym)->as_symbol(), | |
707 get_object(sig_sym)->as_symbol()); | |
708 } | |
709 | |
710 | |
711 // ------------------------------------------------------------------ | |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
712 // ciEnv::get_fake_invokedynamic_method_impl |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
713 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
714 int index, Bytecodes::Code bc) { |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
715 // Compare the following logic with InterpreterRuntime::resolve_invokedynamic. |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
716 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic"); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
717 |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
718 bool is_resolved = cpool->cache()->main_entry_at(index)->is_resolved(bc); |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
719 if (is_resolved && (oop) cpool->cache()->secondary_entry_at(index)->f1() == NULL) |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
720 // FIXME: code generation could allow for null (unlinked) call site |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
721 is_resolved = false; |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
722 |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
723 // Call site might not be resolved yet. We could create a real invoker method from the |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
724 // compiler, but it is simpler to stop the code path here with an unlinked method. |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
725 if (!is_resolved) { |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
726 ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass(); |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
727 ciSymbol* sig_sym = get_object(cpool->signature_ref_at(index))->as_symbol(); |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
728 return get_unloaded_method(mh_klass, ciSymbol::invokeExact_name(), sig_sym); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
729 } |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
730 |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
731 // Get the invoker methodOop from the constant pool. |
1662
e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
1602
diff
changeset
|
732 oop f1_value = cpool->cache()->main_entry_at(index)->f1(); |
e0ba4e04c839
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
1602
diff
changeset
|
733 methodOop signature_invoker = methodOop(f1_value); |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
734 assert(signature_invoker != NULL && signature_invoker->is_method() && signature_invoker->is_method_handle_invoke(), |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
735 "correct result from LinkResolver::resolve_invokedynamic"); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
736 |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1397
diff
changeset
|
737 return get_object(signature_invoker)->as_method(); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
738 } |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
739 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
740 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
741 // ------------------------------------------------------------------ |
0 | 742 // ciEnv::get_instance_klass_for_declared_method_holder |
743 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { | |
744 // For the case of <array>.clone(), the method holder can be a ciArrayKlass | |
745 // instead of a ciInstanceKlass. For that case simply pretend that the | |
746 // declared holder is Object.clone since that's where the call will bottom out. | |
747 // A more correct fix would trickle out through many interfaces in CI, | |
748 // requiring ciInstanceKlass* to become ciKlass* and many more places would | |
749 // require checks to make sure the expected type was found. Given that this | |
750 // only occurs for clone() the more extensive fix seems like overkill so | |
751 // instead we simply smear the array type into Object. | |
752 if (method_holder->is_instance_klass()) { | |
753 return method_holder->as_instance_klass(); | |
754 } else if (method_holder->is_array_klass()) { | |
755 return current()->Object_klass(); | |
756 } else { | |
757 ShouldNotReachHere(); | |
758 } | |
759 return NULL; | |
760 } | |
761 | |
762 | |
763 // ------------------------------------------------------------------ | |
764 // ciEnv::get_method_by_index | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
765 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
766 int index, Bytecodes::Code bc, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
767 ciInstanceKlass* accessor) { |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
768 if (bc == Bytecodes::_invokedynamic) { |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
769 GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc);) |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
770 } else { |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
771 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
772 } |
0 | 773 } |
774 | |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
775 |
0 | 776 // ------------------------------------------------------------------ |
777 // ciEnv::name_buffer | |
778 char *ciEnv::name_buffer(int req_len) { | |
779 if (_name_buffer_len < req_len) { | |
780 if (_name_buffer == NULL) { | |
781 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); | |
782 _name_buffer_len = req_len; | |
783 } else { | |
784 _name_buffer = | |
785 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); | |
786 _name_buffer_len = req_len; | |
787 } | |
788 } | |
789 return _name_buffer; | |
790 } | |
791 | |
792 // ------------------------------------------------------------------ | |
793 // ciEnv::is_in_vm | |
794 bool ciEnv::is_in_vm() { | |
795 return JavaThread::current()->thread_state() == _thread_in_vm; | |
796 } | |
797 | |
798 bool ciEnv::system_dictionary_modification_counter_changed() { | |
799 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); | |
800 } | |
801 | |
802 // ------------------------------------------------------------------ | |
803 // ciEnv::check_for_system_dictionary_modification | |
804 // Check for changes to the system dictionary during compilation | |
805 // class loads, evolution, breakpoints | |
806 void ciEnv::check_for_system_dictionary_modification(ciMethod* target) { | |
807 if (failing()) return; // no need for further checks | |
808 | |
809 // Dependencies must be checked when the system dictionary changes. | |
810 // If logging is enabled all violated dependences will be recorded in | |
811 // the log. In debug mode check dependencies even if the system | |
812 // dictionary hasn't changed to verify that no invalid dependencies | |
813 // were inserted. Any violated dependences in this case are dumped to | |
814 // the tty. | |
815 | |
816 bool counter_changed = system_dictionary_modification_counter_changed(); | |
817 bool test_deps = counter_changed; | |
818 DEBUG_ONLY(test_deps = true); | |
819 if (!test_deps) return; | |
820 | |
821 bool print_failures = false; | |
822 DEBUG_ONLY(print_failures = !counter_changed); | |
823 | |
824 bool keep_going = (print_failures || xtty != NULL); | |
825 | |
826 int violated = 0; | |
827 | |
828 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { | |
829 klassOop witness = deps.check_dependency(); | |
830 if (witness != NULL) { | |
831 ++violated; | |
832 if (print_failures) deps.print_dependency(witness, /*verbose=*/ true); | |
833 // If there's no log and we're not sanity-checking, we're done. | |
834 if (!keep_going) break; | |
835 } | |
836 } | |
837 | |
838 if (violated != 0) { | |
839 assert(counter_changed, "failed dependencies, but counter didn't change"); | |
840 record_failure("concurrent class loading"); | |
841 } | |
842 } | |
843 | |
844 // ------------------------------------------------------------------ | |
845 // ciEnv::register_method | |
846 void ciEnv::register_method(ciMethod* target, | |
847 int entry_bci, | |
848 CodeOffsets* offsets, | |
849 int orig_pc_offset, | |
850 CodeBuffer* code_buffer, | |
851 int frame_words, | |
852 OopMapSet* oop_map_set, | |
853 ExceptionHandlerTable* handler_table, | |
854 ImplicitExceptionTable* inc_table, | |
855 AbstractCompiler* compiler, | |
856 int comp_level, | |
857 bool has_debug_info, | |
858 bool has_unsafe_access) { | |
859 VM_ENTRY_MARK; | |
860 nmethod* nm = NULL; | |
861 { | |
862 // To prevent compile queue updates. | |
863 MutexLocker locker(MethodCompileQueue_lock, THREAD); | |
864 | |
865 // Prevent SystemDictionary::add_to_hierarchy from running | |
866 // and invalidating our dependencies until we install this method. | |
867 MutexLocker ml(Compile_lock); | |
868 | |
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
869 // Change in Jvmti state may invalidate compilation. |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
870 if (!failing() && |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
871 ( (!jvmti_can_hotswap_or_post_breakpoint() && |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
872 JvmtiExport::can_hotswap_or_post_breakpoint()) || |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
873 (!jvmti_can_access_local_variables() && |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
874 JvmtiExport::can_access_local_variables()) || |
1213
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
1142
diff
changeset
|
875 (!jvmti_can_post_on_exceptions() && |
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
1142
diff
changeset
|
876 JvmtiExport::can_post_on_exceptions()) )) { |
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
877 record_failure("Jvmti state change invalidated dependencies"); |
0 | 878 } |
879 | |
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
880 // Change in DTrace flags may invalidate compilation. |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
881 if (!failing() && |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
882 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
883 (!dtrace_method_probes() && DTraceMethodProbes) || |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
884 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
885 record_failure("DTrace flags change invalidated dependencies"); |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
886 } |
0 | 887 |
780
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
888 if (!failing()) { |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
889 if (log() != NULL) { |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
890 // Log the dependencies which this compilation declares. |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
891 dependencies()->log_all_dependencies(); |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
892 } |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
893 |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
894 // Encode the dependencies now, so we can check them right away. |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
895 dependencies()->encode_content_bytes(); |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
896 |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
897 // Check for {class loads, evolution, breakpoints} during compilation |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
898 check_for_system_dictionary_modification(target); |
c96bf21b756f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
470
diff
changeset
|
899 } |
0 | 900 |
901 methodHandle method(THREAD, target->get_methodOop()); | |
902 | |
903 if (failing()) { | |
904 // While not a true deoptimization, it is a preemptive decompile. | |
905 methodDataOop mdo = method()->method_data(); | |
906 if (mdo != NULL) { | |
907 mdo->inc_decompile_count(); | |
908 } | |
909 | |
910 // All buffers in the CodeBuffer are allocated in the CodeCache. | |
911 // If the code buffer is created on each compile attempt | |
912 // as in C2, then it must be freed. | |
913 code_buffer->free_blob(); | |
914 return; | |
915 } | |
916 | |
917 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); | |
918 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); | |
919 | |
920 nm = nmethod::new_nmethod(method, | |
921 compile_id(), | |
922 entry_bci, | |
923 offsets, | |
924 orig_pc_offset, | |
925 debug_info(), dependencies(), code_buffer, | |
926 frame_words, oop_map_set, | |
927 handler_table, inc_table, | |
928 compiler, comp_level); | |
929 | |
930 // Free codeBlobs | |
931 code_buffer->free_blob(); | |
932 | |
933 // stress test 6243940 by immediately making the method | |
934 // non-entrant behind the system's back. This has serious | |
935 // side effects on the code cache and is not meant for | |
936 // general stress testing | |
937 if (nm != NULL && StressNonEntrant) { | |
938 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
939 NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), | |
940 SharedRuntime::get_handle_wrong_method_stub()); | |
941 } | |
942 | |
943 if (nm == NULL) { | |
944 // The CodeCache is full. Print out warning and disable compilation. | |
945 record_failure("code cache is full"); | |
1202 | 946 { |
947 MutexUnlocker ml(Compile_lock); | |
948 MutexUnlocker locker(MethodCompileQueue_lock); | |
949 CompileBroker::handle_full_code_cache(); | |
0 | 950 } |
951 } else { | |
952 NOT_PRODUCT(nm->set_has_debug_info(has_debug_info); ) | |
953 nm->set_has_unsafe_access(has_unsafe_access); | |
954 | |
955 // Record successful registration. | |
956 // (Put nm into the task handle *before* publishing to the Java heap.) | |
957 if (task() != NULL) task()->set_code(nm); | |
958 | |
959 if (entry_bci == InvocationEntryBci) { | |
1783 | 960 if (TieredCompilation) { |
961 // If there is an old version we're done with it | |
962 nmethod* old = method->code(); | |
963 if (TraceMethodReplacement && old != NULL) { | |
964 ResourceMark rm; | |
965 char *method_name = method->name_and_sig_as_C_string(); | |
966 tty->print_cr("Replacing method %s", method_name); | |
967 } | |
968 if (old != NULL ) { | |
969 old->make_not_entrant(); | |
970 } | |
0 | 971 } |
972 if (TraceNMethodInstalls ) { | |
973 ResourceMark rm; | |
974 char *method_name = method->name_and_sig_as_C_string(); | |
975 ttyLocker ttyl; | |
976 tty->print_cr("Installing method (%d) %s ", | |
977 comp_level, | |
978 method_name); | |
979 } | |
980 // Allow the code to be executed | |
981 method->set_code(method, nm); | |
982 } else { | |
983 if (TraceNMethodInstalls ) { | |
984 ResourceMark rm; | |
985 char *method_name = method->name_and_sig_as_C_string(); | |
986 ttyLocker ttyl; | |
987 tty->print_cr("Installing osr method (%d) %s @ %d", | |
988 comp_level, | |
989 method_name, | |
990 entry_bci); | |
991 } | |
992 instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); | |
993 | |
994 } | |
995 } | |
996 } | |
997 // JVMTI -- compiled method notification (must be done outside lock) | |
998 if (nm != NULL) { | |
999 nm->post_compiled_method_load_event(); | |
1000 } | |
1001 | |
1002 } | |
1003 | |
1004 | |
1005 // ------------------------------------------------------------------ | |
1006 // ciEnv::find_system_klass | |
1007 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { | |
1008 VM_ENTRY_MARK; | |
1009 return get_klass_by_name_impl(NULL, klass_name, false); | |
1010 } | |
1011 | |
1012 // ------------------------------------------------------------------ | |
1013 // ciEnv::comp_level | |
1014 int ciEnv::comp_level() { | |
1783 | 1015 if (task() == NULL) return CompLevel_highest_tier; |
0 | 1016 return task()->comp_level(); |
1017 } | |
1018 | |
1019 // ------------------------------------------------------------------ | |
1020 // ciEnv::compile_id | |
1021 uint ciEnv::compile_id() { | |
1022 if (task() == NULL) return 0; | |
1023 return task()->compile_id(); | |
1024 } | |
1025 | |
1026 // ------------------------------------------------------------------ | |
1027 // ciEnv::notice_inlined_method() | |
1028 void ciEnv::notice_inlined_method(ciMethod* method) { | |
1029 _num_inlined_bytecodes += method->code_size(); | |
1030 } | |
1031 | |
1032 // ------------------------------------------------------------------ | |
1033 // ciEnv::num_inlined_bytecodes() | |
1034 int ciEnv::num_inlined_bytecodes() const { | |
1035 return _num_inlined_bytecodes; | |
1036 } | |
1037 | |
1038 // ------------------------------------------------------------------ | |
1039 // ciEnv::record_failure() | |
1040 void ciEnv::record_failure(const char* reason) { | |
1041 if (log() != NULL) { | |
1042 log()->elem("failure reason='%s'", reason); | |
1043 } | |
1044 if (_failure_reason == NULL) { | |
1045 // Record the first failure reason. | |
1046 _failure_reason = reason; | |
1047 } | |
1048 } | |
1049 | |
1050 // ------------------------------------------------------------------ | |
1051 // ciEnv::record_method_not_compilable() | |
1052 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { | |
1053 int new_compilable = | |
1054 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; | |
1055 | |
1056 // Only note transitions to a worse state | |
1057 if (new_compilable > _compilable) { | |
1058 if (log() != NULL) { | |
1059 if (all_tiers) { | |
1060 log()->elem("method_not_compilable"); | |
1061 } else { | |
1062 log()->elem("method_not_compilable_at_tier"); | |
1063 } | |
1064 } | |
1065 _compilable = new_compilable; | |
1066 | |
1067 // Reset failure reason; this one is more important. | |
1068 _failure_reason = NULL; | |
1069 record_failure(reason); | |
1070 } | |
1071 } | |
1072 | |
1073 // ------------------------------------------------------------------ | |
1074 // ciEnv::record_out_of_memory_failure() | |
1075 void ciEnv::record_out_of_memory_failure() { | |
1076 // If memory is low, we stop compiling methods. | |
1077 record_method_not_compilable("out of memory"); | |
1078 } |