1 /*
2 * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include "precompiled.hpp"
25
26 #include "aot/aotCodeHeap.hpp"
27 #include "aot/aotLoader.hpp"
28 #include "classfile/javaAssertions.hpp"
29 #include "gc/g1/heapRegion.hpp"
30 #include "gc/shared/gcLocker.hpp"
31 #include "interpreter/abstractInterpreter.hpp"
32 #include "jvmci/compilerRuntime.hpp"
33 #include "jvmci/jvmciRuntime.hpp"
34 #include "oops/method.hpp"
35 #include "runtime/os.hpp"
36 #include "runtime/sharedRuntime.hpp"
37 #include "runtime/vm_operations.hpp"
38
39 bool AOTLib::_narrow_oop_shift_initialized = false;
40 int AOTLib::_narrow_oop_shift = 0;
41 int AOTLib::_narrow_klass_shift = 0;
42
43 address AOTLib::load_symbol(const char *name) {
44 address symbol = (address) os::dll_lookup(_dl_handle, name);
45 if (symbol == NULL) {
46 tty->print_cr("Shared file %s error: missing %s", _name, name);
47 vm_exit(1);
48 }
49 return symbol;
50 }
51
52 Klass* AOTCodeHeap::get_klass_from_got(const char* klass_name, int klass_len, const Method* method) {
53 AOTKlassData* klass_data = (AOTKlassData*)_lib->load_symbol(klass_name);
54 Klass* k = (Klass*)_klasses_got[klass_data->_got_index];
55 if (k == NULL) {
56 Thread* thread = Thread::current();
57 k = lookup_klass(klass_name, klass_len, method, thread);
58 // Note, exceptions are cleared.
59 if (k == NULL) {
60 fatal("Shared file %s error: klass %s should be resolved already", _lib->name(), klass_name);
61 vm_exit(1);
62 }
63 // Patch now to avoid extra runtime lookup
64 _klasses_got[klass_data->_got_index] = k;
65 if (k->is_instance_klass()) {
66 InstanceKlass* ik = InstanceKlass::cast(k);
67 if (ik->is_initialized()) {
68 _klasses_got[klass_data->_got_index - 1] = ik;
69 }
70 }
71 }
72 return k;
73 }
74
75 Klass* AOTCodeHeap::lookup_klass(const char* name, int len, const Method* method, Thread* thread) {
76 ResourceMark rm(thread);
77 assert(method != NULL, "incorrect call parameter");
78 methodHandle caller(thread, (Method*)method);
79
80 // Use class loader of aot method.
81 Handle loader(thread, caller->method_holder()->class_loader());
82 Handle protection_domain(thread, caller->method_holder()->protection_domain());
83
84 // Ignore wrapping L and ;
85 if (name[0] == 'L') {
86 assert(len > 2, "small name %s", name);
87 name++;
88 len -= 2;
89 }
90 TempNewSymbol sym = SymbolTable::probe(name, len);
91 if (sym == NULL) {
92 log_debug(aot, class, resolve)("Probe failed for AOT class %s", name);
93 return NULL;
94 }
95 Klass* k = SystemDictionary::find_instance_or_array_klass(sym, loader, protection_domain, thread);
96 assert(!thread->has_pending_exception(), "should not throw");
97
98 if (k != NULL) {
99 log_info(aot, class, resolve)("%s %s (lookup)", caller->method_holder()->external_name(), k->external_name());
100 }
101 return k;
102 }
103
104 void AOTLib::handle_config_error(const char* format, ...) {
105 if (PrintAOT) {
106 va_list ap;
107 va_start(ap, format);
108 tty->vprint_cr(format, ap);
109 va_end(ap);
110 }
111 if (UseAOTStrictLoading) {
112 vm_exit(1);
113 }
114 _valid = false;
115 }
116
117 void AOTLib::verify_flag(bool aot_flag, bool flag, const char* name) {
118 if (_valid && aot_flag != flag) {
119 handle_config_error("Shared file %s error: %s has different value '%s' from current '%s'", _name, name , (aot_flag ? "true" : "false"), (flag ? "true" : "false"));
120 }
121 }
122
123 void AOTLib::verify_flag(int aot_flag, int flag, const char* name) {
124 if (_valid && aot_flag != flag) {
125 handle_config_error("Shared file %s error: %s has different value '%d' from current '%d'", _name, name , aot_flag, flag);
126 }
127 }
128
129 void AOTLib::verify_config() {
130 GrowableArray<AOTLib*>* libraries = AOTLoader::libraries();
131 for (GrowableArrayIterator<AOTLib*> lib = libraries->begin(); lib != libraries->end(); ++lib) {
132 if ((*lib)->_config == _config) {
133 handle_config_error("AOT library %s already loaded.", (*lib)->_name);
134 return;
135 }
136 }
137
138 if (_header->_version != AOTHeader::AOT_SHARED_VERSION) {
139 handle_config_error("Invalid version of the shared file %s. Expected %d but was %d", _name, _header->_version, AOTHeader::AOT_SHARED_VERSION);
140 return;
141 }
142
143 const char* aot_jvm_version = (const char*)_header + _header->_jvm_version_offset + 2;
144 if (strcmp(aot_jvm_version, VM_Version::jre_release_version()) != 0) {
145 handle_config_error("JVM version '%s' recorded in the shared file %s does not match current version '%s'", aot_jvm_version, _name, VM_Version::jre_release_version());
146 return;
147 }
148
149 // Debug VM has different layout of runtime and metadata structures
150 #ifdef ASSERT
151 verify_flag(_config->_debug_VM, true, "Debug VM version");
152 #else
153 verify_flag(!(_config->_debug_VM), true, "Product VM version");
154 #endif
155 // Check configuration size
156 verify_flag(_config->_config_size, AOTConfiguration::CONFIG_SIZE, "AOT configuration size");
157
158 // Check flags
159 verify_flag(_config->_useCompressedOops, UseCompressedOops, "UseCompressedOops");
160 verify_flag(_config->_useCompressedClassPointers, UseCompressedClassPointers, "UseCompressedClassPointers");
161 verify_flag(_config->_useG1GC, UseG1GC, "UseG1GC");
162 verify_flag(_config->_useTLAB, UseTLAB, "UseTLAB");
163 verify_flag(_config->_useBiasedLocking, UseBiasedLocking, "UseBiasedLocking");
164 verify_flag(_config->_objectAlignment, ObjectAlignmentInBytes, "ObjectAlignmentInBytes");
165 verify_flag(_config->_contendedPaddingWidth, ContendedPaddingWidth, "ContendedPaddingWidth");
166 verify_flag(_config->_fieldsAllocationStyle, FieldsAllocationStyle, "FieldsAllocationStyle");
167 verify_flag(_config->_compactFields, CompactFields, "CompactFields");
168 verify_flag(_config->_enableContended, EnableContended, "EnableContended");
169 verify_flag(_config->_restrictContended, RestrictContended, "RestrictContended");
170
171 if (!TieredCompilation && _config->_tieredAOT) {
172 handle_config_error("Shared file %s error: Expected to run with tiered compilation on", _name);
173 }
174
175 // Shifts are static values which initialized by 0 until java heap initialization.
176 // AOT libs are loaded before heap initialized so shift values are not set.
177 // It is okay since ObjectAlignmentInBytes flag which defines shifts value is set before AOT libs are loaded.
178 // Set shifts value based on first AOT library config.
179 if (UseCompressedOops && _valid) {
180 if (!_narrow_oop_shift_initialized) {
181 _narrow_oop_shift = _config->_narrowOopShift;
182 if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set
183 _narrow_klass_shift = _config->_narrowKlassShift;
184 }
185 _narrow_oop_shift_initialized = true;
186 } else {
187 verify_flag(_config->_narrowOopShift, _narrow_oop_shift, "aot_config->_narrowOopShift");
188 if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set
189 verify_flag(_config->_narrowKlassShift, _narrow_klass_shift, "aot_config->_narrowKlassShift");
190 }
191 }
192 }
193 }
194
195 AOTLib::~AOTLib() {
196 free((void*) _name);
197 }
198
199 AOTCodeHeap::~AOTCodeHeap() {
200 if (_classes != NULL) {
201 FREE_C_HEAP_ARRAY(AOTClass, _classes);
202 }
203 if (_code_to_aot != NULL) {
204 FREE_C_HEAP_ARRAY(CodeToAMethod, _code_to_aot);
205 }
206 }
207
208 AOTLib::AOTLib(void* handle, const char* name, int dso_id) : _valid(true), _dl_handle(handle), _dso_id(dso_id) {
209 _name = (const char*) strdup(name);
210
211 // Verify that VM runs with the same parameters as AOT tool.
212 _config = (AOTConfiguration*) load_symbol("A.config");
213 _header = (AOTHeader*) load_symbol("A.header");
214
215 verify_config();
216
217 if (!_valid && PrintAOT) {
218 tty->print("%7d ", (int) tty->time_stamp().milliseconds());
219 tty->print_cr("%4d skipped %s aot library", _dso_id, _name);
220 }
221 }
222
223 AOTCodeHeap::AOTCodeHeap(AOTLib* lib) :
224 CodeHeap("CodeHeap 'AOT'", CodeBlobType::AOT), _lib(lib), _classes(NULL), _code_to_aot(NULL) {
225 assert(_lib->is_valid(), "invalid library");
226
227 _lib_symbols_initialized = false;
228 _aot_id = 0;
229
230 _class_count = _lib->header()->_class_count;
231 _method_count = _lib->header()->_method_count;
232
233 // Collect metaspace info: names -> address in .got section
234 _metaspace_names = (const char*) _lib->load_symbol("A.meta.names");
235 _method_metadata = (address) _lib->load_symbol("A.meth.metadata");
236 _methods_offsets = (address) _lib->load_symbol("A.meth.offsets");
237 _klasses_offsets = (address) _lib->load_symbol("A.kls.offsets");
238 _dependencies = (address) _lib->load_symbol("A.kls.dependencies");
239 _code_space = (address) _lib->load_symbol("A.text");
240
241 // First cell is number of elements.
242 _klasses_got = (Metadata**) _lib->load_symbol("A.kls.got");
243 _klasses_got_size = _lib->header()->_klasses_got_size;
244
245 _metadata_got = (Metadata**) _lib->load_symbol("A.meta.got");
246 _metadata_got_size = _lib->header()->_metadata_got_size;
247
248 _oop_got = (oop*) _lib->load_symbol("A.oop.got");
249 _oop_got_size = _lib->header()->_oop_got_size;
250
251 // Collect stubs info
252 _stubs_offsets = (int*) _lib->load_symbol("A.stubs.offsets");
253
254 // code segments table
255 _code_segments = (address) _lib->load_symbol("A.code.segments");
256
257 // method state
258 _method_state = (jlong*) _lib->load_symbol("A.meth.state");
259
260 // Create a table for mapping classes
261 _classes = NEW_C_HEAP_ARRAY(AOTClass, _class_count, mtCode);
262 memset(_classes, 0, _class_count * sizeof(AOTClass));
263
264 // Create table for searching AOTCompiledMethod based on pc.
265 _code_to_aot = NEW_C_HEAP_ARRAY(CodeToAMethod, _method_count, mtCode);
266 memset(_code_to_aot, 0, _method_count * sizeof(CodeToAMethod));
267
268 _memory.set_low_boundary((char *)_code_space);
269 _memory.set_high_boundary((char *)_code_space);
270 _memory.set_low((char *)_code_space);
271 _memory.set_high((char *)_code_space);
272
273 _segmap.set_low_boundary((char *)_code_segments);
274 _segmap.set_low((char *)_code_segments);
275
276 _log2_segment_size = exact_log2(_lib->config()->_codeSegmentSize);
277
278 // Register aot stubs
279 register_stubs();
280
281 if (PrintAOT || (PrintCompilation && PrintAOT)) {
282 tty->print("%7d ", (int) tty->time_stamp().milliseconds());
283 tty->print_cr("%4d loaded %s aot library", _lib->id(), _lib->name());
284 }
285 }
286
287 void AOTCodeHeap::publish_aot(const methodHandle& mh, AOTMethodData* method_data, int code_id) {
288 // The method may be explicitly excluded by the user.
289 // Or Interpreter uses an intrinsic for this method.
290 if (CompilerOracle::should_exclude(mh) || !AbstractInterpreter::can_be_compiled(mh)) {
291 return;
292 }
293
294 address code = method_data->_code;
295 const char* name = method_data->_name;
296 aot_metadata* meta = method_data->_meta;
297
298 if (meta->scopes_pcs_begin() == meta->scopes_pcs_end()) {
299 // When the AOT compiler compiles something big we fail to generate metadata
300 // in CodeInstaller::gather_metadata. In that case the scopes_pcs_begin == scopes_pcs_end.
301 // In all successful cases we always have 2 entries of scope pcs.
302 log_info(aot, class, resolve)("Failed to load %s (no metadata available)", mh->name_and_sig_as_C_string());
303 _code_to_aot[code_id]._state = invalid;
304 return;
305 }
306
307 jlong* state_adr = &_method_state[code_id];
308 address metadata_table = method_data->_metadata_table;
309 int metadata_size = method_data->_metadata_size;
310 assert(code_id < _method_count, "sanity");
311 _aot_id++;
312
313 #ifdef ASSERT
314 if (_aot_id > CIStop || _aot_id < CIStart) {
315 // Skip compilation
316 return;
317 }
318 #endif
319 // Check one more time.
320 if (_code_to_aot[code_id]._state == invalid) {
321 return;
322 }
323 AOTCompiledMethod *aot = new AOTCompiledMethod(code, mh(), meta, metadata_table, metadata_size, state_adr, this, name, code_id, _aot_id);
324 assert(_code_to_aot[code_id]._aot == NULL, "should be not initialized");
325 _code_to_aot[code_id]._aot = aot; // Should set this first
326 if (Atomic::cmpxchg(in_use, &_code_to_aot[code_id]._state, not_set) != not_set) {
327 _code_to_aot[code_id]._aot = NULL; // Clean
328 } else { // success
329 // Publish method
330 #ifdef TIERED
331 mh->set_aot_code(aot);
332 #endif
333 Method::set_code(mh, aot);
334 if (PrintAOT || (PrintCompilation && PrintAOT)) {
335 aot->print_on(tty, NULL);
336 }
337 // Publish oop only after we are visible to CompiledMethodIterator
338 aot->set_oop(mh()->method_holder()->klass_holder());
339 }
340 }
341
342 void AOTCodeHeap::link_primitive_array_klasses() {
343 ResourceMark rm;
344 for (int i = T_BOOLEAN; i <= T_CONFLICT; i++) {
345 BasicType t = (BasicType)i;
346 if (is_java_primitive(t)) {
347 const Klass* arr_klass = Universe::typeArrayKlassObj(t);
348 AOTKlassData* klass_data = (AOTKlassData*) os::dll_lookup(_lib->dl_handle(), arr_klass->signature_name());
349 if (klass_data != NULL) {
350 // Set both GOT cells, resolved and initialized klass pointers.
351 // _got_index points to second cell - resolved klass pointer.
352 _klasses_got[klass_data->_got_index-1] = (Metadata*)arr_klass; // Initialized
353 _klasses_got[klass_data->_got_index ] = (Metadata*)arr_klass; // Resolved
354 if (PrintAOT) {
355 tty->print_cr("[Found %s in %s]", arr_klass->internal_name(), _lib->name());
356 }
357 }
358 }
359 }
360 }
361
362 void AOTCodeHeap::register_stubs() {
363 int stubs_count = _stubs_offsets[0]; // contains number
364 _stubs_offsets++;
365 AOTMethodOffsets* stub_offsets = (AOTMethodOffsets*)_stubs_offsets;
366 for (int i = 0; i < stubs_count; ++i) {
367 const char* stub_name = _metaspace_names + stub_offsets[i]._name_offset;
368 address entry = _code_space + stub_offsets[i]._code_offset;
369 aot_metadata* meta = (aot_metadata *) (_method_metadata + stub_offsets[i]._meta_offset);
370 address metadata_table = (address)_metadata_got + stub_offsets[i]._metadata_got_offset;
371 int metadata_size = stub_offsets[i]._metadata_got_size;
372 int code_id = stub_offsets[i]._code_id;
373 assert(code_id < _method_count, "sanity");
374 jlong* state_adr = &_method_state[code_id];
375 int len = build_u2_from((address)stub_name);
376 stub_name += 2;
377 char* full_name = NEW_C_HEAP_ARRAY(char, len+5, mtCode);
378 if (full_name == NULL) { // No memory?
379 break;
380 }
381 memcpy(full_name, "AOT ", 4);
382 memcpy(full_name+4, stub_name, len);
383 full_name[len+4] = 0;
384 guarantee(_code_to_aot[code_id]._state != invalid, "stub %s can't be invalidated", full_name);
385 AOTCompiledMethod* aot = new AOTCompiledMethod(entry, NULL, meta, metadata_table, metadata_size, state_adr, this, full_name, code_id, i);
386 assert(_code_to_aot[code_id]._aot == NULL, "should be not initialized");
387 _code_to_aot[code_id]._aot = aot;
388 if (Atomic::cmpxchg(in_use, &_code_to_aot[code_id]._state, not_set) != not_set) {
389 fatal("stab '%s' code state is %d", full_name, _code_to_aot[code_id]._state);
390 }
391 // Adjust code buffer boundaries only for stubs because they are last in the buffer.
392 adjust_boundaries(aot);
393 if (PrintAOT && Verbose) {
394 aot->print_on(tty, NULL);
395 }
396 }
397 }
398
399 #define SET_AOT_GLOBAL_SYMBOL_VALUE(AOTSYMNAME, AOTSYMTYPE, VMSYMVAL) \
400 { \
401 AOTSYMTYPE * adr = (AOTSYMTYPE *) os::dll_lookup(_lib->dl_handle(), AOTSYMNAME); \
402 /* Check for a lookup error */ \
403 guarantee(adr != NULL, "AOT Symbol not found %s", AOTSYMNAME); \
404 *adr = (AOTSYMTYPE) VMSYMVAL; \
405 }
406
407 void AOTCodeHeap::link_graal_runtime_symbols() {
408 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_monitorenter", address, JVMCIRuntime::monitorenter);
409 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_monitorexit", address, JVMCIRuntime::monitorexit);
410 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_log_object", address, JVMCIRuntime::log_object);
411 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_log_printf", address, JVMCIRuntime::log_printf);
412 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_log_primitive", address, JVMCIRuntime::log_primitive);
413 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_instance", address, JVMCIRuntime::new_instance);
414 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_array", address, JVMCIRuntime::new_array);
415 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_multi_array", address, JVMCIRuntime::new_multi_array);
416 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_dynamic_new_array", address, JVMCIRuntime::dynamic_new_array);
417 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_validate_object", address, JVMCIRuntime::validate_object);
418 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_write_barrier_pre", address, JVMCIRuntime::write_barrier_pre);
419 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_identity_hash_code", address, JVMCIRuntime::identity_hash_code);
420 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_write_barrier_post", address, JVMCIRuntime::write_barrier_post);
421 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_dynamic_new_instance", address, JVMCIRuntime::dynamic_new_instance);
422 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_thread_is_interrupted", address, JVMCIRuntime::thread_is_interrupted);
423 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_exception_handler_for_pc", address, JVMCIRuntime::exception_handler_for_pc);
424 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_test_deoptimize_call_int", address, JVMCIRuntime::test_deoptimize_call_int);
425 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_throw_and_post_jvmti_exception", address, JVMCIRuntime::throw_and_post_jvmti_exception);
426 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_throw_klass_external_name_exception", address, JVMCIRuntime::throw_klass_external_name_exception);
427 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_throw_class_cast_exception", address, JVMCIRuntime::throw_class_cast_exception);
428 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_vm_message", address, JVMCIRuntime::vm_message);
429 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_vm_error", address, JVMCIRuntime::vm_error);
430 }
431
432 void AOTCodeHeap::link_shared_runtime_symbols() {
433 SET_AOT_GLOBAL_SYMBOL_VALUE("_resolve_static_entry", address, SharedRuntime::get_resolve_static_call_stub());
434 SET_AOT_GLOBAL_SYMBOL_VALUE("_resolve_virtual_entry", address, SharedRuntime::get_resolve_virtual_call_stub());
435 SET_AOT_GLOBAL_SYMBOL_VALUE("_resolve_opt_virtual_entry", address, SharedRuntime::get_resolve_opt_virtual_call_stub());
436 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_deopt_blob_unpack", address, SharedRuntime::deopt_blob()->unpack());
437 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_deopt_blob_uncommon_trap", address, SharedRuntime::deopt_blob()->uncommon_trap());
438 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_ic_miss_stub", address, SharedRuntime::get_ic_miss_stub());
439 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_handle_wrong_method_stub", address, SharedRuntime::get_handle_wrong_method_stub());
440 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_exception_handler_for_return_address", address, SharedRuntime::exception_handler_for_return_address);
441 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_register_finalizer", address, SharedRuntime::register_finalizer);
442 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_OSR_migration_end", address, SharedRuntime::OSR_migration_end);
443 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_resolve_dynamic_invoke", address, CompilerRuntime::resolve_dynamic_invoke);
444 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_resolve_string_by_symbol", address, CompilerRuntime::resolve_string_by_symbol);
445 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_resolve_klass_by_symbol", address, CompilerRuntime::resolve_klass_by_symbol);
446 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_resolve_method_by_symbol_and_load_counters", address, CompilerRuntime::resolve_method_by_symbol_and_load_counters);
447 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_initialize_klass_by_symbol", address, CompilerRuntime::initialize_klass_by_symbol);
448 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_invocation_event", address, CompilerRuntime::invocation_event);
449 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_backedge_event", address, CompilerRuntime::backedge_event);
450
451 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dpow", address, SharedRuntime::dpow);
452 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dexp", address, SharedRuntime::dexp);
453 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dcos", address, SharedRuntime::dcos);
454 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dsin", address, SharedRuntime::dsin);
455 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dtan", address, SharedRuntime::dtan);
456 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dlog", address, SharedRuntime::dlog);
457 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dlog10", address, SharedRuntime::dlog10);
458 }
459
460 void AOTCodeHeap::link_stub_routines_symbols() {
461 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jbyte_arraycopy", address, StubRoutines::_jbyte_arraycopy);
462 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jshort_arraycopy", address, StubRoutines::_jshort_arraycopy);
463 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jint_arraycopy", address, StubRoutines::_jint_arraycopy);
464 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jlong_arraycopy", address, StubRoutines::_jlong_arraycopy);
465 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_oop_arraycopy", address, StubRoutines::_oop_arraycopy);
466 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_oop_arraycopy_uninit", address, StubRoutines::_oop_arraycopy_uninit);
467
468 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jbyte_disjoint_arraycopy", address, StubRoutines::_jbyte_disjoint_arraycopy);
469 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jshort_disjoint_arraycopy", address, StubRoutines::_jshort_disjoint_arraycopy);
470 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jint_disjoint_arraycopy", address, StubRoutines::_jint_disjoint_arraycopy);
471 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jlong_disjoint_arraycopy", address, StubRoutines::_jlong_disjoint_arraycopy);
472 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_oop_disjoint_arraycopy", address, StubRoutines::_oop_disjoint_arraycopy);
473 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_oop_disjoint_arraycopy_uninit", address, StubRoutines::_oop_disjoint_arraycopy_uninit);
474
475 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jbyte_arraycopy", address, StubRoutines::_arrayof_jbyte_arraycopy);
476 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jshort_arraycopy", address, StubRoutines::_arrayof_jshort_arraycopy);
477 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jint_arraycopy", address, StubRoutines::_arrayof_jint_arraycopy);
478 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jlong_arraycopy", address, StubRoutines::_arrayof_jlong_arraycopy);
479 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_oop_arraycopy", address, StubRoutines::_arrayof_oop_arraycopy);
480 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_oop_arraycopy_uninit", address, StubRoutines::_arrayof_oop_arraycopy_uninit);
481
482 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jbyte_disjoint_arraycopy", address, StubRoutines::_arrayof_jbyte_disjoint_arraycopy);
483 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jshort_disjoint_arraycopy", address, StubRoutines::_arrayof_jshort_disjoint_arraycopy);
484 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jint_disjoint_arraycopy", address, StubRoutines::_arrayof_jint_disjoint_arraycopy);
485 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jlong_disjoint_arraycopy", address, StubRoutines::_arrayof_jlong_disjoint_arraycopy);
486 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_oop_disjoint_arraycopy", address, StubRoutines::_arrayof_oop_disjoint_arraycopy);
487 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_oop_disjoint_arraycopy_uninit", address, StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit);
488
489 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_unsafe_arraycopy", address, StubRoutines::_unsafe_arraycopy);
490
491 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_checkcast_arraycopy", address, StubRoutines::_checkcast_arraycopy);
492
493 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_aescrypt_encryptBlock", address, StubRoutines::_aescrypt_encryptBlock);
494 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_aescrypt_decryptBlock", address, StubRoutines::_aescrypt_decryptBlock);
495 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_cipherBlockChaining_encryptAESCrypt", address, StubRoutines::_cipherBlockChaining_encryptAESCrypt);
496 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_cipherBlockChaining_decryptAESCrypt", address, StubRoutines::_cipherBlockChaining_decryptAESCrypt);
497 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_update_bytes_crc32", address, StubRoutines::_updateBytesCRC32);
498 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_crc_table_adr", address, StubRoutines::_crc_table_adr);
499
500
501 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha1_implCompress", address, StubRoutines::_sha1_implCompress);
502 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha1_implCompressMB", address, StubRoutines::_sha1_implCompressMB);
503 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha256_implCompress", address, StubRoutines::_sha256_implCompress);
504 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha256_implCompressMB", address, StubRoutines::_sha256_implCompressMB);
505 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha512_implCompress", address, StubRoutines::_sha512_implCompress);
506 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha512_implCompressMB", address, StubRoutines::_sha512_implCompressMB);
507 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_multiplyToLen", address, StubRoutines::_multiplyToLen);
508
509 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_counterMode_AESCrypt", address, StubRoutines::_counterMode_AESCrypt);
510 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_ghash_processBlocks", address, StubRoutines::_ghash_processBlocks);
511 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_crc32c_table_addr", address, StubRoutines::_crc32c_table_addr);
512 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_updateBytesCRC32C", address, StubRoutines::_updateBytesCRC32C);
513 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_updateBytesAdler32", address, StubRoutines::_updateBytesAdler32);
514 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_squareToLen", address, StubRoutines::_squareToLen);
515 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_mulAdd", address, StubRoutines::_mulAdd);
516 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_montgomeryMultiply", address, StubRoutines::_montgomeryMultiply);
517 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_montgomerySquare", address, StubRoutines::_montgomerySquare);
518 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_vectorizedMismatch", address, StubRoutines::_vectorizedMismatch);
519
520 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_throw_delayed_StackOverflowError_entry", address, StubRoutines::_throw_delayed_StackOverflowError_entry);
521
522 }
523
524 void AOTCodeHeap::link_os_symbols() {
525 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_os_javaTimeMillis", address, os::javaTimeMillis);
526 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_os_javaTimeNanos", address, os::javaTimeNanos);
527 }
528
529 /*
530 * Link any global symbols in precompiled DSO with dlopen() _dl_handle
531 * dso_handle.
532 */
533
534 void AOTCodeHeap::link_global_lib_symbols() {
535 if (!_lib_symbols_initialized) {
536 _lib_symbols_initialized = true;
537
538 CollectedHeap* heap = Universe::heap();
539 CardTableModRefBS* ct = (CardTableModRefBS*)(heap->barrier_set());
540 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_card_table_address", address, ct->byte_map_base);
541 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_heap_top_address", address, (heap->supports_inline_contig_alloc() ? heap->top_addr() : NULL));
542 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_heap_end_address", address, (heap->supports_inline_contig_alloc() ? heap->end_addr() : NULL));
543 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_polling_page", address, os::get_polling_page());
544 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_narrow_klass_base_address", address, Universe::narrow_klass_base());
545 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_narrow_oop_base_address", address, Universe::narrow_oop_base());
546 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_log_of_heap_region_grain_bytes", int, HeapRegion::LogOfHRGrainBytes);
547 SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_inline_contiguous_allocation_supported", bool, heap->supports_inline_contig_alloc());
548 link_shared_runtime_symbols();
549 link_stub_routines_symbols();
550 link_os_symbols();
551 link_graal_runtime_symbols();
552
553 // Link primitive array klasses.
554 link_primitive_array_klasses();
555 }
556 }
557
558 #ifndef PRODUCT
559 int AOTCodeHeap::klasses_seen = 0;
560 int AOTCodeHeap::aot_klasses_found = 0;
561 int AOTCodeHeap::aot_klasses_fp_miss = 0;
562 int AOTCodeHeap::aot_klasses_cl_miss = 0;
563 int AOTCodeHeap::aot_methods_found = 0;
564
565 void AOTCodeHeap::print_statistics() {
566 tty->print_cr("Classes seen: %d AOT classes found: %d AOT methods found: %d", klasses_seen, aot_klasses_found, aot_methods_found);
567 tty->print_cr("AOT fingerprint mismatches: %d AOT class loader mismatches: %d", aot_klasses_fp_miss, aot_klasses_cl_miss);
568 }
569 #endif
570
571 Method* AOTCodeHeap::find_method(Klass* klass, Thread* thread, const char* method_name) {
572 int method_name_len = build_u2_from((address)method_name);
573 method_name += 2;
574 const char* signature_name = method_name + method_name_len;
575 int signature_name_len = build_u2_from((address)signature_name);
576 signature_name += 2;
577 // The class should have been loaded so the method and signature should already be
578 // in the symbol table. If they're not there, the method doesn't exist.
579 TempNewSymbol name = SymbolTable::probe(method_name, method_name_len);
580 TempNewSymbol signature = SymbolTable::probe(signature_name, signature_name_len);
581
582 Method* m;
583 if (name == NULL || signature == NULL) {
584 m = NULL;
585 } else if (name == vmSymbols::object_initializer_name() ||
586 name == vmSymbols::class_initializer_name()) {
587 // Never search superclasses for constructors
588 if (klass->is_instance_klass()) {
589 m = InstanceKlass::cast(klass)->find_method(name, signature);
590 } else {
591 m = NULL;
592 }
593 } else {
594 m = klass->lookup_method(name, signature);
595 if (m == NULL && klass->is_instance_klass()) {
596 m = InstanceKlass::cast(klass)->lookup_method_in_ordered_interfaces(name, signature);
597 }
598 }
599 if (m == NULL) {
600 // Fatal error because we assume classes and methods should not be changed since aot compilation.
601 const char* klass_name = klass->external_name();
602 int klass_len = (int)strlen(klass_name);
603 char* meta_name = NEW_RESOURCE_ARRAY(char, klass_len + 1 + method_name_len + signature_name_len + 1);
604 memcpy(meta_name, klass_name, klass_len);
605 meta_name[klass_len] = '.';
606 memcpy(&meta_name[klass_len + 1], method_name, method_name_len);
607 memcpy(&meta_name[klass_len + 1 + method_name_len], signature_name, signature_name_len);
608 meta_name[klass_len + 1 + method_name_len + signature_name_len] = '\0';
609 Handle exception = Exceptions::new_exception(thread, vmSymbols::java_lang_NoSuchMethodError(), meta_name);
610 java_lang_Throwable::print(exception(), tty);
611 tty->cr();
612 java_lang_Throwable::print_stack_trace(exception, tty);
613 tty->cr();
614 fatal("Failed to find method '%s'", meta_name);
615 }
616 NOT_PRODUCT( aot_methods_found++; )
617 return m;
618 }
619
620 AOTKlassData* AOTCodeHeap::find_klass(const char *name) {
621 return (AOTKlassData*) os::dll_lookup(_lib->dl_handle(), name);
622 }
623
624 AOTKlassData* AOTCodeHeap::find_klass(InstanceKlass* ik) {
625 ResourceMark rm;
626 AOTKlassData* klass_data = find_klass(ik->signature_name());
627 return klass_data;
628 }
629
630 bool AOTCodeHeap::is_dependent_method(Klass* dependee, AOTCompiledMethod* aot) {
631 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee);
632 AOTKlassData* klass_data = find_klass(dependee_ik);
633 if (klass_data == NULL) {
634 return false; // no AOT records for this class - no dependencies
635 }
636 if (!dependee_ik->has_passed_fingerprint_check()) {
637 return false; // different class
638 }
639
640 int methods_offset = klass_data->_dependent_methods_offset;
641 if (methods_offset >= 0) {
642 address methods_cnt_adr = _dependencies + methods_offset;
643 int methods_cnt = *(int*)methods_cnt_adr;
644 int* indexes = (int*)(methods_cnt_adr + 4);
645 for (int i = 0; i < methods_cnt; ++i) {
646 int code_id = indexes[i];
647 if (_code_to_aot[code_id]._aot == aot) {
648 return true; // found dependent method
649 }
650 }
651 }
652 return false;
653 }
654
655 void AOTCodeHeap::sweep_dependent_methods(int* indexes, int methods_cnt) {
656 int marked = 0;
657 for (int i = 0; i < methods_cnt; ++i) {
658 int code_id = indexes[i];
659 // Invalidate aot code.
660 if (Atomic::cmpxchg(invalid, &_code_to_aot[code_id]._state, not_set) != not_set) {
661 if (_code_to_aot[code_id]._state == in_use) {
662 AOTCompiledMethod* aot = _code_to_aot[code_id]._aot;
663 assert(aot != NULL, "aot should be set");
664 if (!aot->is_runtime_stub()) { // Something is wrong - should not invalidate stubs.
665 aot->mark_for_deoptimization(false);
666 marked++;
667 }
668 }
669 }
670 }
671 if (marked > 0) {
672 VM_Deoptimize op;
673 VMThread::execute(&op);
674 }
675 }
676
677 void AOTCodeHeap::sweep_dependent_methods(AOTKlassData* klass_data) {
678 // Make dependent methods non_entrant forever.
679 int methods_offset = klass_data->_dependent_methods_offset;
680 if (methods_offset >= 0) {
681 address methods_cnt_adr = _dependencies + methods_offset;
682 int methods_cnt = *(int*)methods_cnt_adr;
683 int* indexes = (int*)(methods_cnt_adr + 4);
684 sweep_dependent_methods(indexes, methods_cnt);
685 }
686 }
687
688 void AOTCodeHeap::sweep_dependent_methods(InstanceKlass* ik) {
689 AOTKlassData* klass_data = find_klass(ik);
690 vmassert(klass_data != NULL, "dependency data missing");
691 sweep_dependent_methods(klass_data);
692 }
693
694 void AOTCodeHeap::sweep_method(AOTCompiledMethod *aot) {
695 int indexes[] = {aot->method_index()};
696 sweep_dependent_methods(indexes, 1);
697 vmassert(aot->method()->code() != aot && aot->method()->aot_code() == NULL, "method still active");
698 }
699
700
701 bool AOTCodeHeap::load_klass_data(InstanceKlass* ik, Thread* thread) {
702 ResourceMark rm;
703
704 NOT_PRODUCT( klasses_seen++; )
705
706 AOTKlassData* klass_data = find_klass(ik);
707 if (klass_data == NULL) {
708 return false;
709 }
710
711 if (!ik->has_passed_fingerprint_check()) {
712 NOT_PRODUCT( aot_klasses_fp_miss++; )
713 log_trace(aot, class, fingerprint)("class %s%s has bad fingerprint in %s tid=" INTPTR_FORMAT,
714 ik->internal_name(), ik->is_shared() ? " (shared)" : "",
715 _lib->name(), p2i(thread));
716 sweep_dependent_methods(klass_data);
717 return false;
718 }
719
720 if (ik->has_been_redefined()) {
721 log_trace(aot, class, load)("class %s%s in %s has been redefined tid=" INTPTR_FORMAT,
722 ik->internal_name(), ik->is_shared() ? " (shared)" : "",
723 _lib->name(), p2i(thread));
724 sweep_dependent_methods(klass_data);
725 return false;
726 }
727
728 assert(klass_data->_class_id < _class_count, "invalid class id");
729 AOTClass* aot_class = &_classes[klass_data->_class_id];
730 if (aot_class->_classloader != NULL && aot_class->_classloader != ik->class_loader_data()) {
731 log_trace(aot, class, load)("class %s in %s already loaded for classloader %p vs %p tid=" INTPTR_FORMAT,
732 ik->internal_name(), _lib->name(), aot_class->_classloader, ik->class_loader_data(), p2i(thread));
733 NOT_PRODUCT( aot_klasses_cl_miss++; )
734 return false;
735 }
736
737 if (_lib->config()->_omitAssertions && JavaAssertions::enabled(ik->name()->as_C_string(), ik->class_loader() == NULL)) {
738 log_trace(aot, class, load)("class %s in %s does not have java assertions in compiled code, but assertions are enabled for this execution.", ik->internal_name(), _lib->name());
739 sweep_dependent_methods(klass_data);
740 return false;
741 }
742
743 NOT_PRODUCT( aot_klasses_found++; )
744
745 log_trace(aot, class, load)("found %s in %s for classloader %p tid=" INTPTR_FORMAT, ik->internal_name(), _lib->name(), ik->class_loader_data(), p2i(thread));
746
747 aot_class->_classloader = ik->class_loader_data();
748 // Set klass's Resolve (second) got cell.
749 _klasses_got[klass_data->_got_index] = ik;
750 if (ik->is_initialized()) {
751 _klasses_got[klass_data->_got_index - 1] = ik;
752 }
753
754 // Initialize global symbols of the DSO to the corresponding VM symbol values.
755 link_global_lib_symbols();
756
757 int methods_offset = klass_data->_compiled_methods_offset;
758 if (methods_offset >= 0) {
759 address methods_cnt_adr = _methods_offsets + methods_offset;
760 int methods_cnt = *(int*)methods_cnt_adr;
761 // Collect data about compiled methods
762 AOTMethodData* methods_data = NEW_RESOURCE_ARRAY(AOTMethodData, methods_cnt);
763 AOTMethodOffsets* methods_offsets = (AOTMethodOffsets*)(methods_cnt_adr + 4);
764 for (int i = 0; i < methods_cnt; ++i) {
765 AOTMethodOffsets* method_offsets = &methods_offsets[i];
766 int code_id = method_offsets->_code_id;
767 if (_code_to_aot[code_id]._state == invalid) {
768 continue; // skip AOT methods slots which have been invalidated
769 }
770 AOTMethodData* method_data = &methods_data[i];
771 const char* aot_name = _metaspace_names + method_offsets->_name_offset;
772 method_data->_name = aot_name;
773 method_data->_code = _code_space + method_offsets->_code_offset;
774 method_data->_meta = (aot_metadata*)(_method_metadata + method_offsets->_meta_offset);
775 method_data->_metadata_table = (address)_metadata_got + method_offsets->_metadata_got_offset;
776 method_data->_metadata_size = method_offsets->_metadata_got_size;
777 // aot_name format: "<u2_size>Ljava/lang/ThreadGroup;<u2_size>addUnstarted<u2_size>()V"
778 int klass_len = build_u2_from((address)aot_name);
779 const char* method_name = aot_name + 2 + klass_len;
780 Method* m = AOTCodeHeap::find_method(ik, thread, method_name);
781 methodHandle mh(thread, m);
782 if (mh->code() != NULL) { // Does it have already compiled code?
783 continue; // Don't overwrite
784 }
785 publish_aot(mh, method_data, code_id);
786 }
787 }
788 return true;
789 }
790
791 AOTCompiledMethod* AOTCodeHeap::next_in_use_at(int start) const {
792 for (int index = start; index < _method_count; index++) {
793 if (_code_to_aot[index]._state != in_use) {
794 continue; // Skip uninitialized entries.
795 }
796 AOTCompiledMethod* aot = _code_to_aot[index]._aot;
797 return aot;
798 }
799 return NULL;
800 }
801
802 void* AOTCodeHeap::first() const {
803 return next_in_use_at(0);
804 }
805
806 void* AOTCodeHeap::next(void* p) const {
807 AOTCompiledMethod *aot = (AOTCompiledMethod *)p;
808 int next_index = aot->method_index() + 1;
809 assert(next_index <= _method_count, "");
810 if (next_index == _method_count) {
811 return NULL;
812 }
813 return next_in_use_at(next_index);
814 }
815
816 void* AOTCodeHeap::find_start(void* p) const {
817 if (!contains(p)) {
818 return NULL;
819 }
820 size_t offset = pointer_delta(p, low_boundary(), 1);
821 // Use segments table
822 size_t seg_idx = offset / _lib->config()->_codeSegmentSize;
823 if ((int)(_code_segments[seg_idx]) == 0xff) {
824 return NULL;
825 }
826 while (_code_segments[seg_idx] > 0) {
827 seg_idx -= (int)_code_segments[seg_idx];
828 }
829 int code_offset = (int)seg_idx * _lib->config()->_codeSegmentSize;
830 int aot_index = *(int*)(_code_space + code_offset);
831 AOTCompiledMethod* aot = _code_to_aot[aot_index]._aot;
832 assert(aot != NULL, "should find registered aot method");
833 return aot;
834 }
835
836 AOTCompiledMethod* AOTCodeHeap::find_aot(address p) const {
837 assert(contains(p), "should be here");
838 return (AOTCompiledMethod *)find_start(p);
839 }
840
841 CodeBlob* AOTCodeHeap::find_blob_unsafe(void* start) const {
842 return (CodeBlob*)AOTCodeHeap::find_start(start);
843 }
844
845 void AOTCodeHeap::oops_do(OopClosure* f) {
846 for (int i = 0; i < _oop_got_size; i++) {
847 oop* p = &_oop_got[i];
848 if (*p == NULL) continue; // skip non-oops
849 f->do_oop(p);
850 }
851 for (int index = 0; index < _method_count; index++) {
852 if (_code_to_aot[index]._state != in_use) {
853 continue; // Skip uninitialized entries.
854 }
855 AOTCompiledMethod* aot = _code_to_aot[index]._aot;
856 aot->do_oops(f);
857 }
858 }
859
860 // Scan only klasses_got cells which should have only Klass*,
861 // metadata_got cells are scanned only for alive AOT methods
862 // by AOTCompiledMethod::metadata_do().
863 void AOTCodeHeap::got_metadata_do(void f(Metadata*)) {
864 for (int i = 1; i < _klasses_got_size; i++) {
865 Metadata** p = &_klasses_got[i];
866 Metadata* md = *p;
867 if (md == NULL) continue; // skip non-oops
868 if (Metaspace::contains(md)) {
869 f(md);
870 } else {
871 intptr_t meta = (intptr_t)md;
872 fatal("Invalid value in _klasses_got[%d] = " INTPTR_FORMAT, i, meta);
873 }
874 }
875 }
876
877 void AOTCodeHeap::cleanup_inline_caches() {
878 for (int index = 0; index < _method_count; index++) {
879 if (_code_to_aot[index]._state != in_use) {
880 continue; // Skip uninitialized entries.
881 }
882 AOTCompiledMethod* aot = _code_to_aot[index]._aot;
883 aot->cleanup_inline_caches();
884 }
885 }
886
887 #ifdef ASSERT
888 int AOTCodeHeap::verify_icholder_relocations() {
889 int count = 0;
890 for (int index = 0; index < _method_count; index++) {
891 if (_code_to_aot[index]._state != in_use) {
892 continue; // Skip uninitialized entries.
893 }
894 AOTCompiledMethod* aot = _code_to_aot[index]._aot;
895 count += aot->verify_icholder_relocations();
896 }
897 return count;
898 }
899 #endif
900
901 void AOTCodeHeap::flush_evol_dependents_on(InstanceKlass* dependee) {
902 for (int index = 0; index < _method_count; index++) {
903 if (_code_to_aot[index]._state != in_use) {
904 continue; // Skip uninitialized entries.
905 }
906 AOTCompiledMethod* aot = _code_to_aot[index]._aot;
907 aot->flush_evol_dependents_on(dependee);
908 }
909 }
910
911 void AOTCodeHeap::metadata_do(void f(Metadata*)) {
912 for (int index = 0; index < _method_count; index++) {
913 if (_code_to_aot[index]._state != in_use) {
914 continue; // Skip uninitialized entries.
915 }
916 AOTCompiledMethod* aot = _code_to_aot[index]._aot;
917 if (aot->_is_alive()) {
918 aot->metadata_do(f);
919 }
920 }
921 // Scan klasses_got cells.
922 got_metadata_do(f);
923 }
924
925 bool AOTCodeHeap::reconcile_dynamic_klass(AOTCompiledMethod *caller, InstanceKlass* holder, int index, Klass *dyno_klass, const char *descriptor1, const char *descriptor2) {
926 const char * const descriptors[2] = {descriptor1, descriptor2};
927 JavaThread *thread = JavaThread::current();
928 ResourceMark rm(thread);
929
930 AOTKlassData* holder_data = find_klass(holder);
931 vmassert(holder_data != NULL, "klass %s not found", holder->signature_name());
932 vmassert(is_dependent_method(holder, caller), "sanity");
933
934 AOTKlassData* dyno_data = NULL;
935 bool adapter_failed = false;
936 char buf[64];
937 int descriptor_index = 0;
938 // descriptors[0] specific name ("adapter:<method_id>") for matching
939 // descriptors[1] fall-back name ("adapter") for depdencies
940 while (descriptor_index < 2) {
941 const char *descriptor = descriptors[descriptor_index];
942 if (descriptor == NULL) {
943 break;
944 }
945 jio_snprintf(buf, sizeof buf, "%s<%d:%d>", descriptor, holder_data->_class_id, index);
946 dyno_data = find_klass(buf);
947 if (dyno_data != NULL) {
948 break;
949 }
950 // If match failed then try fall-back for dependencies
951 ++descriptor_index;
952 adapter_failed = true;
953 }
954
955 if (dyno_data == NULL && dyno_klass == NULL) {
956 // all is well, no (appendix) at compile-time, and still none
957 return true;
958 }
959
960 if (dyno_data == NULL) {
961 // no (appendix) at build-time, but now there is
962 sweep_dependent_methods(holder_data);
963 return false;
964 }
965
966 if (adapter_failed) {
967 // adapter method mismatch
968 sweep_dependent_methods(holder_data);
969 sweep_dependent_methods(dyno_data);
970 return false;
971 }
972
973 if (dyno_klass == NULL) {
974 // (appendix) at build-time, none now
975 sweep_dependent_methods(holder_data);
976 sweep_dependent_methods(dyno_data);
977 return false;
978 }
979
980 // TODO: support array appendix object
981 if (!dyno_klass->is_instance_klass()) {
982 sweep_dependent_methods(holder_data);
983 sweep_dependent_methods(dyno_data);
984 return false;
985 }
986
987 InstanceKlass* dyno = InstanceKlass::cast(dyno_klass);
988
989 if (!dyno->is_anonymous()) {
990 if (_klasses_got[dyno_data->_got_index] != dyno) {
991 // compile-time class different from runtime class, fail and deoptimize
992 sweep_dependent_methods(holder_data);
993 sweep_dependent_methods(dyno_data);
994 return false;
995 }
996
997 if (dyno->is_initialized()) {
998 _klasses_got[dyno_data->_got_index - 1] = dyno;
999 }
1000 return true;
1001 }
1002
1003 // TODO: support anonymous supers
1004 if (!dyno->supers_have_passed_fingerprint_checks() || dyno->get_stored_fingerprint() != dyno_data->_fingerprint) {
1005 NOT_PRODUCT( aot_klasses_fp_miss++; )
1006 log_trace(aot, class, fingerprint)("class %s%s has bad fingerprint in %s tid=" INTPTR_FORMAT,
1007 dyno->internal_name(), dyno->is_shared() ? " (shared)" : "",
1008 _lib->name(), p2i(thread));
1009 sweep_dependent_methods(holder_data);
1010 sweep_dependent_methods(dyno_data);
1011 return false;
1012 }
1013
1014 _klasses_got[dyno_data->_got_index] = dyno;
1015 if (dyno->is_initialized()) {
1016 _klasses_got[dyno_data->_got_index - 1] = dyno;
1017 }
1018
1019 // TODO: hook up any AOT code
1020 // load_klass_data(dyno_data, thread);
1021 return true;
1022 }
1023
1024 bool AOTCodeHeap::reconcile_dynamic_method(AOTCompiledMethod *caller, InstanceKlass* holder, int index, Method *adapter_method) {
1025 InstanceKlass *adapter_klass = adapter_method->method_holder();
1026 char buf[64];
1027 jio_snprintf(buf, sizeof buf, "adapter:%d", adapter_method->method_idnum());
1028 if (!reconcile_dynamic_klass(caller, holder, index, adapter_klass, buf, "adapter")) {
1029 return false;
1030 }
1031 return true;
1032 }
1033
1034 bool AOTCodeHeap::reconcile_dynamic_invoke(AOTCompiledMethod* caller, InstanceKlass* holder, int index, Method* adapter_method, Klass *appendix_klass) {
1035 if (!reconcile_dynamic_klass(caller, holder, index, appendix_klass, "appendix")) {
1036 return false;
1037 }
1038
1039 if (!reconcile_dynamic_method(caller, holder, index, adapter_method)) {
1040 return false;
1041 }
1042
1043 return true;
1044 }