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
25 #include "classfile/vmClasses.hpp"
26 #include "classfile/vmSymbols.hpp"
27 #include "code/codeCache.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/nmethod.hpp"
30 #include "code/pcDesc.hpp"
31 #include "code/scopeDesc.hpp"
32 #include "code/vtableStubs.hpp"
33 #include "compiler/compileBroker.hpp"
34 #include "compiler/oopMap.hpp"
35 #include "gc/g1/g1HeapRegion.hpp"
36 #include "gc/shared/barrierSet.hpp"
37 #include "gc/shared/collectedHeap.hpp"
38 #include "gc/shared/gcLocker.hpp"
39 #include "interpreter/bytecode.hpp"
40 #include "interpreter/interpreter.hpp"
41 #include "interpreter/linkResolver.hpp"
42 #include "logging/log.hpp"
43 #include "logging/logStream.hpp"
44 #include "memory/oopFactory.hpp"
45 #include "memory/resourceArea.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/klass.inline.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/typeArrayOop.inline.hpp"
50 #include "opto/ad.hpp"
51 #include "opto/addnode.hpp"
52 #include "opto/callnode.hpp"
53 #include "opto/cfgnode.hpp"
54 #include "opto/graphKit.hpp"
55 #include "opto/machnode.hpp"
56 #include "opto/matcher.hpp"
57 #include "opto/memnode.hpp"
58 #include "opto/mulnode.hpp"
59 #include "opto/output.hpp"
60 #include "opto/runtime.hpp"
61 #include "opto/subnode.hpp"
62 #include "prims/jvmtiExport.hpp"
63 #include "runtime/atomic.hpp"
64 #include "runtime/frame.inline.hpp"
65 #include "runtime/handles.inline.hpp"
66 #include "runtime/interfaceSupport.inline.hpp"
67 #include "runtime/javaCalls.hpp"
68 #include "runtime/sharedRuntime.hpp"
69 #include "runtime/signature.hpp"
70 #include "runtime/stackWatermarkSet.hpp"
71 #include "runtime/synchronizer.hpp"
72 #include "runtime/threadCritical.hpp"
73 #include "runtime/threadWXSetters.inline.hpp"
74 #include "runtime/vframe.hpp"
75 #include "runtime/vframeArray.hpp"
76 #include "runtime/vframe_hp.hpp"
77 #include "utilities/copy.hpp"
78 #include "utilities/preserveException.hpp"
79
80
81 // For debugging purposes:
82 // To force FullGCALot inside a runtime function, add the following two lines
83 //
84 // Universe::release_fullgc_alot_dummy();
85 // Universe::heap()->collect();
86 //
87 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
88
89
90 #define C2_BLOB_FIELD_DEFINE(name, type) \
91 type OptoRuntime:: BLOB_FIELD_NAME(name) = nullptr;
92 #define C2_STUB_FIELD_NAME(name) _ ## name ## _Java
93 #define C2_STUB_FIELD_DEFINE(name, f, t, r) \
94 address OptoRuntime:: C2_STUB_FIELD_NAME(name) = nullptr;
95 #define C2_JVMTI_STUB_FIELD_DEFINE(name) \
96 address OptoRuntime:: STUB_FIELD_NAME(name) = nullptr;
97 C2_STUBS_DO(C2_BLOB_FIELD_DEFINE, C2_STUB_FIELD_DEFINE, C2_JVMTI_STUB_FIELD_DEFINE)
98 #undef C2_BLOB_FIELD_DEFINE
99 #undef C2_STUB_FIELD_DEFINE
100 #undef C2_JVMTI_STUB_FIELD_DEFINE
101
102 #define C2_BLOB_NAME_DEFINE(name, type) "C2 Runtime " # name "_blob",
103 #define C2_STUB_NAME_DEFINE(name, f, t, r) "C2 Runtime " # name,
104 #define C2_JVMTI_STUB_NAME_DEFINE(name) "C2 Runtime " # name,
105 const char* OptoRuntime::_stub_names[] = {
106 C2_STUBS_DO(C2_BLOB_NAME_DEFINE, C2_STUB_NAME_DEFINE, C2_JVMTI_STUB_NAME_DEFINE)
107 };
108 #undef C2_BLOB_NAME_DEFINE
109 #undef C2_STUB_NAME_DEFINE
110 #undef C2_JVMTI_STUB_NAME_DEFINE
111
112 // This should be called in an assertion at the start of OptoRuntime routines
113 // which are entered from compiled code (all of them)
114 #ifdef ASSERT
115 static bool check_compiled_frame(JavaThread* thread) {
116 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
117 RegisterMap map(thread,
118 RegisterMap::UpdateMap::skip,
119 RegisterMap::ProcessFrames::include,
120 RegisterMap::WalkContinuation::skip);
121 frame caller = thread->last_frame().sender(&map);
122 assert(caller.is_compiled_frame(), "not being called from compiled like code");
123 return true;
124 }
125 #endif // ASSERT
126
127 /*
128 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, return_pc) \
129 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, return_pc); \
130 if (var == nullptr) { return false; }
131 */
156 C2_STUB_NAME(name), \
157 fancy_jump, \
158 pass_tls, \
159 pass_retpc); \
160 if (C2_STUB_FIELD_NAME(name) == nullptr) { return false; } \
161
162 #define C2_JVMTI_STUB_C_FUNC(name) CAST_FROM_FN_PTR(address, SharedRuntime::name)
163
164 #define GEN_C2_JVMTI_STUB(name) \
165 STUB_FIELD_NAME(name) = \
166 generate_stub(env, \
167 notify_jvmti_vthread_Type, \
168 C2_JVMTI_STUB_C_FUNC(name), \
169 C2_STUB_NAME(name), \
170 0, \
171 true, \
172 false); \
173 if (STUB_FIELD_NAME(name) == nullptr) { return false; } \
174
175 bool OptoRuntime::generate(ciEnv* env) {
176
177 C2_STUBS_DO(GEN_C2_BLOB, GEN_C2_STUB, GEN_C2_JVMTI_STUB)
178
179 return true;
180 }
181
182 #undef GEN_C2_BLOB
183
184 #undef C2_STUB_FIELD_NAME
185 #undef C2_STUB_TYPEFUNC
186 #undef C2_STUB_C_FUNC
187 #undef C2_STUB_NAME
188 #undef GEN_C2_STUB
189
190 #undef C2_JVMTI_STUB_C_FUNC
191 #undef GEN_C2_JVMTI_STUB
192 // #undef gen
193
194 const TypeFunc* OptoRuntime::_new_instance_Type = nullptr;
195 const TypeFunc* OptoRuntime::_new_array_Type = nullptr;
249 const TypeFunc* OptoRuntime::_updateBytesAdler32_Type = nullptr;
250 const TypeFunc* OptoRuntime::_osr_end_Type = nullptr;
251 const TypeFunc* OptoRuntime::_register_finalizer_Type = nullptr;
252 #if INCLUDE_JFR
253 const TypeFunc* OptoRuntime::_class_id_load_barrier_Type = nullptr;
254 #endif // INCLUDE_JFR
255 #if INCLUDE_JVMTI
256 const TypeFunc* OptoRuntime::_notify_jvmti_vthread_Type = nullptr;
257 #endif // INCLUDE_JVMTI
258 const TypeFunc* OptoRuntime::_dtrace_method_entry_exit_Type = nullptr;
259 const TypeFunc* OptoRuntime::_dtrace_object_alloc_Type = nullptr;
260
261 // Helper method to do generation of RunTimeStub's
262 address OptoRuntime::generate_stub(ciEnv* env,
263 TypeFunc_generator gen, address C_function,
264 const char *name, int is_fancy_jump,
265 bool pass_tls,
266 bool return_pc) {
267
268 // Matching the default directive, we currently have no method to match.
269 DirectiveSet* directive = DirectivesStack::getDefaultDirective(CompileBroker::compiler(CompLevel_full_optimization));
270 ResourceMark rm;
271 Compile C(env, gen, C_function, name, is_fancy_jump, pass_tls, return_pc, directive);
272 DirectivesStack::release(directive);
273 return C.stub_entry_point();
274 }
275
276 const char* OptoRuntime::stub_name(address entry) {
277 #ifndef PRODUCT
278 CodeBlob* cb = CodeCache::find_blob(entry);
279 RuntimeStub* rs =(RuntimeStub *)cb;
280 assert(rs != nullptr && rs->is_runtime_stub(), "not a runtime stub");
281 return rs->name();
282 #else
283 // Fast implementation for product mode (maybe it should be inlined too)
284 return "runtime stub";
285 #endif
286 }
287
288 // local methods passed as arguments to stub generator that forward
289 // control to corresponding JRT methods of SharedRuntime
292 oopDesc* dest, jint dest_pos,
293 jint length, JavaThread* thread) {
294 SharedRuntime::slow_arraycopy_C(src, src_pos, dest, dest_pos, length, thread);
295 }
296
297 void OptoRuntime::complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* current) {
298 SharedRuntime::complete_monitor_locking_C(obj, lock, current);
299 }
300
301
302 //=============================================================================
303 // Opto compiler runtime routines
304 //=============================================================================
305
306
307 //=============================allocation======================================
308 // We failed the fast-path allocation. Now we need to do a scavenge or GC
309 // and try allocation again.
310
311 // object allocation
312 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* current))
313 JRT_BLOCK;
314 #ifndef PRODUCT
315 SharedRuntime::_new_instance_ctr++; // new instance requires GC
316 #endif
317 assert(check_compiled_frame(current), "incorrect caller");
318
319 // These checks are cheap to make and support reflective allocation.
320 int lh = klass->layout_helper();
321 if (Klass::layout_helper_needs_slow_path(lh) || !InstanceKlass::cast(klass)->is_initialized()) {
322 Handle holder(current, klass->klass_holder()); // keep the klass alive
323 klass->check_valid_for_instantiation(false, THREAD);
324 if (!HAS_PENDING_EXCEPTION) {
325 InstanceKlass::cast(klass)->initialize(THREAD);
326 }
327 }
328
329 if (!HAS_PENDING_EXCEPTION) {
330 // Scavenge and allocate an instance.
331 Handle holder(current, klass->klass_holder()); // keep the klass alive
332 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
333 current->set_vm_result(result);
334
335 // Pass oops back through thread local storage. Our apparent type to Java
336 // is that we return an oop, but we can block on exit from this routine and
337 // a GC can trash the oop in C's return register. The generated stub will
338 // fetch the oop from TLS after any possible GC.
339 }
340
341 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
342 JRT_BLOCK_END;
343
344 // inform GC that we won't do card marks for initializing writes.
345 SharedRuntime::on_slowpath_allocation_exit(current);
346 JRT_END
347
348
349 // array allocation
350 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread* current))
351 JRT_BLOCK;
352 #ifndef PRODUCT
353 SharedRuntime::_new_array_ctr++; // new array requires GC
354 #endif
355 assert(check_compiled_frame(current), "incorrect caller");
356
357 // Scavenge and allocate an instance.
358 oop result;
359
360 if (array_type->is_typeArray_klass()) {
361 // The oopFactory likes to work with the element type.
362 // (We could bypass the oopFactory, since it doesn't add much value.)
363 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
364 result = oopFactory::new_typeArray(elem_type, len, THREAD);
365 } else {
366 // Although the oopFactory likes to work with the elem_type,
367 // the compiler prefers the array_type, since it must already have
368 // that latter value in hand for the fast path.
369 Handle holder(current, array_type->klass_holder()); // keep the array klass alive
370 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
371 result = oopFactory::new_objArray(elem_type, len, THREAD);
372 }
373
374 // Pass oops back through thread local storage. Our apparent type to Java
375 // is that we return an oop, but we can block on exit from this routine and
376 // a GC can trash the oop in C's return register. The generated stub will
377 // fetch the oop from TLS after any possible GC.
378 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
379 current->set_vm_result(result);
380 JRT_BLOCK_END;
381
382 // inform GC that we won't do card marks for initializing writes.
383 SharedRuntime::on_slowpath_allocation_exit(current);
384 JRT_END
385
386 // array allocation without zeroing
387 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread* current))
388 JRT_BLOCK;
389 #ifndef PRODUCT
390 SharedRuntime::_new_array_ctr++; // new array requires GC
391 #endif
392 assert(check_compiled_frame(current), "incorrect caller");
393
394 // Scavenge and allocate an instance.
395 oop result;
396
397 assert(array_type->is_typeArray_klass(), "should be called only for type array");
398 // The oopFactory likes to work with the element type.
399 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
400 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
401
402 // Pass oops back through thread local storage. Our apparent type to Java
403 // is that we return an oop, but we can block on exit from this routine and
404 // a GC can trash the oop in C's return register. The generated stub will
405 // fetch the oop from TLS after any possible GC.
406 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
407 current->set_vm_result(result);
419 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
420 size_t hs_bytes = arrayOopDesc::base_offset_in_bytes(elem_type);
421 assert(is_aligned(hs_bytes, BytesPerInt), "must be 4 byte aligned");
422 HeapWord* obj = cast_from_oop<HeapWord*>(result);
423 if (!is_aligned(hs_bytes, BytesPerLong)) {
424 *reinterpret_cast<jint*>(reinterpret_cast<char*>(obj) + hs_bytes) = 0;
425 hs_bytes += BytesPerInt;
426 }
427
428 // Optimized zeroing.
429 assert(is_aligned(hs_bytes, BytesPerLong), "must be 8-byte aligned");
430 const size_t aligned_hs = hs_bytes / BytesPerLong;
431 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
432 }
433
434 JRT_END
435
436 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
437
438 // multianewarray for 2 dimensions
439 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread* current))
440 #ifndef PRODUCT
441 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
442 #endif
443 assert(check_compiled_frame(current), "incorrect caller");
444 assert(elem_type->is_klass(), "not a class");
445 jint dims[2];
446 dims[0] = len1;
447 dims[1] = len2;
448 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
449 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
450 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
451 current->set_vm_result(obj);
452 JRT_END
453
454 // multianewarray for 3 dimensions
455 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread* current))
456 #ifndef PRODUCT
457 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
458 #endif
459 assert(check_compiled_frame(current), "incorrect caller");
460 assert(elem_type->is_klass(), "not a class");
461 jint dims[3];
462 dims[0] = len1;
463 dims[1] = len2;
464 dims[2] = len3;
465 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
466 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
467 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
468 current->set_vm_result(obj);
469 JRT_END
470
471 // multianewarray for 4 dimensions
472 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread* current))
473 #ifndef PRODUCT
474 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
475 #endif
476 assert(check_compiled_frame(current), "incorrect caller");
477 assert(elem_type->is_klass(), "not a class");
478 jint dims[4];
479 dims[0] = len1;
480 dims[1] = len2;
481 dims[2] = len3;
482 dims[3] = len4;
483 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
484 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
485 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
486 current->set_vm_result(obj);
487 JRT_END
488
489 // multianewarray for 5 dimensions
490 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread* current))
491 #ifndef PRODUCT
492 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
493 #endif
494 assert(check_compiled_frame(current), "incorrect caller");
495 assert(elem_type->is_klass(), "not a class");
496 jint dims[5];
497 dims[0] = len1;
498 dims[1] = len2;
499 dims[2] = len3;
500 dims[3] = len4;
501 dims[4] = len5;
502 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
503 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
504 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
505 current->set_vm_result(obj);
506 JRT_END
507
508 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread* current))
509 assert(check_compiled_frame(current), "incorrect caller");
510 assert(elem_type->is_klass(), "not a class");
511 assert(oop(dims)->is_typeArray(), "not an array");
512
513 ResourceMark rm;
514 jint len = dims->length();
515 assert(len > 0, "Dimensions array should contain data");
516 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
517 ArrayAccess<>::arraycopy_to_native<>(dims, typeArrayOopDesc::element_offset<jint>(0),
518 c_dims, len);
519
520 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
521 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
522 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
523 current->set_vm_result(obj);
524 JRT_END
525
526 JRT_BLOCK_ENTRY(void, OptoRuntime::monitor_notify_C(oopDesc* obj, JavaThread* current))
527
528 // Very few notify/notifyAll operations find any threads on the waitset, so
529 // the dominant fast-path is to simply return.
530 // Relatedly, it's critical that notify/notifyAll be fast in order to
531 // reduce lock hold times.
532 if (!SafepointSynchronize::is_synchronizing()) {
533 if (ObjectSynchronizer::quick_notify(obj, current, false)) {
534 return;
535 }
536 }
537
538 // This is the case the fast-path above isn't provisioned to handle.
539 // The fast-path is designed to handle frequently arising cases in an efficient manner.
540 // (The fast-path is just a degenerate variant of the slow-path).
541 // Perform the dreaded state transition and pass control into the slow-path.
542 JRT_BLOCK;
543 Handle h_obj(current, obj);
544 ObjectSynchronizer::notify(h_obj, CHECK);
545 JRT_BLOCK_END;
546 JRT_END
547
548 JRT_BLOCK_ENTRY(void, OptoRuntime::monitor_notifyAll_C(oopDesc* obj, JavaThread* current))
549
550 if (!SafepointSynchronize::is_synchronizing() ) {
551 if (ObjectSynchronizer::quick_notify(obj, current, true)) {
552 return;
553 }
554 }
555
556 // This is the case the fast-path above isn't provisioned to handle.
557 // The fast-path is designed to handle frequently arising cases in an efficient manner.
558 // (The fast-path is just a degenerate variant of the slow-path).
559 // Perform the dreaded state transition and pass control into the slow-path.
560 JRT_BLOCK;
561 Handle h_obj(current, obj);
562 ObjectSynchronizer::notifyall(h_obj, CHECK);
563 JRT_BLOCK_END;
564 JRT_END
565
566 static const TypeFunc* make_new_instance_Type() {
567 // create input type (domain)
568 const Type **fields = TypeTuple::fields(1);
1515 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1516 switch (register_save_policy[reg]) {
1517 case 'C': return false; //SOC
1518 case 'E': return true ; //SOE
1519 case 'N': return false; //NS
1520 case 'A': return false; //AS
1521 }
1522 ShouldNotReachHere();
1523 return false;
1524 }
1525
1526 //-----------------------------------------------------------------------
1527 // Exceptions
1528 //
1529
1530 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg);
1531
1532 // The method is an entry that is always called by a C++ method not
1533 // directly from compiled code. Compiled code will call the C++ method following.
1534 // We can't allow async exception to be installed during exception processing.
1535 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* current, nmethod* &nm))
1536 // The frame we rethrow the exception to might not have been processed by the GC yet.
1537 // The stack watermark barrier takes care of detecting that and ensuring the frame
1538 // has updated oops.
1539 StackWatermarkSet::after_unwind(current);
1540
1541 // Do not confuse exception_oop with pending_exception. The exception_oop
1542 // is only used to pass arguments into the method. Not for general
1543 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1544 // the runtime stubs checks this on exit.
1545 assert(current->exception_oop() != nullptr, "exception oop is found");
1546 address handler_address = nullptr;
1547
1548 Handle exception(current, current->exception_oop());
1549 address pc = current->exception_pc();
1550
1551 // Clear out the exception oop and pc since looking up an
1552 // exception handler can cause class loading, which might throw an
1553 // exception and those fields are expected to be clear during
1554 // normal bytecode execution.
1555 current->clear_exception_oop_and_pc();
1789 frame caller_frame = stub_frame.sender(®_map);
1790 return caller_frame.is_deoptimized_frame();
1791 }
1792
1793 static const TypeFunc* make_register_finalizer_Type() {
1794 // create input type (domain)
1795 const Type **fields = TypeTuple::fields(1);
1796 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1797 // // The JavaThread* is passed to each routine as the last argument
1798 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1799 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1800
1801 // create result type (range)
1802 fields = TypeTuple::fields(0);
1803
1804 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1805
1806 return TypeFunc::make(domain,range);
1807 }
1808
1809 #if INCLUDE_JFR
1810 static const TypeFunc* make_class_id_load_barrier_Type() {
1811 // create input type (domain)
1812 const Type **fields = TypeTuple::fields(1);
1813 fields[TypeFunc::Parms+0] = TypeInstPtr::KLASS;
1814 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms + 1, fields);
1815
1816 // create result type (range)
1817 fields = TypeTuple::fields(0);
1818
1819 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms + 0, fields);
1820
1821 return TypeFunc::make(domain,range);
1822 }
1823 #endif // INCLUDE_JFR
1824
1825 //-----------------------------------------------------------------------------
1826 static const TypeFunc* make_dtrace_method_entry_exit_Type() {
1827 // create input type (domain)
1828 const Type **fields = TypeTuple::fields(2);
1829 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1830 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1831 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1832
1833 // create result type (range)
1834 fields = TypeTuple::fields(0);
1835
1836 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1837
1838 return TypeFunc::make(domain,range);
1839 }
1840
1841 static const TypeFunc* make_dtrace_object_alloc_Type() {
1842 // create input type (domain)
1843 const Type **fields = TypeTuple::fields(2);
1844 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1845 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1846
1847 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1848
1849 // create result type (range)
1850 fields = TypeTuple::fields(0);
1851
1852 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1853
1854 return TypeFunc::make(domain,range);
1855 }
1856
1857 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer_C(oopDesc* obj, JavaThread* current))
1858 assert(oopDesc::is_oop(obj), "must be a valid oop");
1859 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1860 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1861 JRT_END
1862
1863 //-----------------------------------------------------------------------------
1864
1865 NamedCounter * volatile OptoRuntime::_named_counters = nullptr;
1866
1867 //
1868 // dump the collected NamedCounters.
1869 //
1870 void OptoRuntime::print_named_counters() {
1871 int total_lock_count = 0;
1872 int eliminated_lock_count = 0;
1873
1874 NamedCounter* c = _named_counters;
1875 while (c) {
1876 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1877 int count = c->count();
1878 if (count > 0) {
1879 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1880 if (Verbose) {
1881 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1882 }
2012 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg) {
2013 trace_exception_counter++;
2014 stringStream tempst;
2015
2016 tempst.print("%d [Exception (%s): ", trace_exception_counter, msg);
2017 exception_oop->print_value_on(&tempst);
2018 tempst.print(" in ");
2019 CodeBlob* blob = CodeCache::find_blob(exception_pc);
2020 if (blob->is_nmethod()) {
2021 blob->as_nmethod()->method()->print_value_on(&tempst);
2022 } else if (blob->is_runtime_stub()) {
2023 tempst.print("<runtime-stub>");
2024 } else {
2025 tempst.print("<unknown>");
2026 }
2027 tempst.print(" at " INTPTR_FORMAT, p2i(exception_pc));
2028 tempst.print("]");
2029
2030 st->print_raw_cr(tempst.freeze());
2031 }
|
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
25 #include "classfile/vmClasses.hpp"
26 #include "classfile/vmSymbols.hpp"
27 #include "code/codeCache.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/nmethod.hpp"
30 #include "code/pcDesc.hpp"
31 #include "code/scopeDesc.hpp"
32 #include "code/vtableStubs.hpp"
33 #include "compiler/compileBroker.hpp"
34 #include "compiler/compilerDefinitions.inline.hpp"
35 #include "compiler/oopMap.hpp"
36 #include "gc/g1/g1HeapRegion.hpp"
37 #include "gc/shared/barrierSet.hpp"
38 #include "gc/shared/collectedHeap.hpp"
39 #include "gc/shared/gcLocker.hpp"
40 #include "interpreter/bytecode.hpp"
41 #include "interpreter/interpreter.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "logging/log.hpp"
44 #include "logging/logStream.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "memory/resourceArea.hpp"
47 #include "oops/objArrayKlass.hpp"
48 #include "oops/klass.inline.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "oops/typeArrayOop.inline.hpp"
51 #include "opto/ad.hpp"
52 #include "opto/addnode.hpp"
53 #include "opto/callnode.hpp"
54 #include "opto/cfgnode.hpp"
55 #include "opto/graphKit.hpp"
56 #include "opto/machnode.hpp"
57 #include "opto/matcher.hpp"
58 #include "opto/memnode.hpp"
59 #include "opto/mulnode.hpp"
60 #include "opto/output.hpp"
61 #include "opto/runtime.hpp"
62 #include "opto/subnode.hpp"
63 #include "prims/jvmtiExport.hpp"
64 #include "runtime/atomic.hpp"
65 #include "runtime/frame.inline.hpp"
66 #include "runtime/handles.inline.hpp"
67 #include "runtime/interfaceSupport.inline.hpp"
68 #include "runtime/java.hpp"
69 #include "runtime/javaCalls.hpp"
70 #include "runtime/perfData.inline.hpp"
71 #include "runtime/sharedRuntime.hpp"
72 #include "runtime/signature.hpp"
73 #include "runtime/stackWatermarkSet.hpp"
74 #include "runtime/synchronizer.hpp"
75 #include "runtime/threadCritical.hpp"
76 #include "runtime/threadWXSetters.inline.hpp"
77 #include "runtime/vframe.hpp"
78 #include "runtime/vframeArray.hpp"
79 #include "runtime/vframe_hp.hpp"
80 #include "services/management.hpp"
81 #include "utilities/copy.hpp"
82 #include "utilities/preserveException.hpp"
83
84
85 // For debugging purposes:
86 // To force FullGCALot inside a runtime function, add the following two lines
87 //
88 // Universe::release_fullgc_alot_dummy();
89 // Universe::heap()->collect();
90 //
91 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
92
93
94 #define C2_BLOB_FIELD_DEFINE(name, type) \
95 type OptoRuntime:: BLOB_FIELD_NAME(name) = nullptr;
96 #define C2_STUB_FIELD_NAME(name) _ ## name ## _Java
97 #define C2_STUB_FIELD_DEFINE(name, f, t, r) \
98 address OptoRuntime:: C2_STUB_FIELD_NAME(name) = nullptr;
99 #define C2_JVMTI_STUB_FIELD_DEFINE(name) \
100 address OptoRuntime:: STUB_FIELD_NAME(name) = nullptr;
101 C2_STUBS_DO(C2_BLOB_FIELD_DEFINE, C2_STUB_FIELD_DEFINE, C2_JVMTI_STUB_FIELD_DEFINE)
102 #undef C2_BLOB_FIELD_DEFINE
103 #undef C2_STUB_FIELD_DEFINE
104 #undef C2_JVMTI_STUB_FIELD_DEFINE
105
106
107 #define C2_BLOB_NAME_DEFINE(name, type) "C2 Runtime " # name "_blob",
108 #define C2_STUB_NAME_DEFINE(name, f, t, r) "C2 Runtime " # name,
109 #define C2_JVMTI_STUB_NAME_DEFINE(name) "C2 Runtime " # name,
110 const char* OptoRuntime::_stub_names[] = {
111 C2_STUBS_DO(C2_BLOB_NAME_DEFINE, C2_STUB_NAME_DEFINE, C2_JVMTI_STUB_NAME_DEFINE)
112 };
113 #undef C2_BLOB_NAME_DEFINE
114 #undef C2_STUB_NAME_DEFINE
115 #undef C2_JVMTI_STUB_NAME_DEFINE
116
117 address OptoRuntime::_vtable_must_compile_Java = nullptr;
118
119 PerfCounter* _perf_OptoRuntime_class_init_barrier_redundant_count = nullptr;
120
121 // This should be called in an assertion at the start of OptoRuntime routines
122 // which are entered from compiled code (all of them)
123 #ifdef ASSERT
124 static bool check_compiled_frame(JavaThread* thread) {
125 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
126 RegisterMap map(thread,
127 RegisterMap::UpdateMap::skip,
128 RegisterMap::ProcessFrames::include,
129 RegisterMap::WalkContinuation::skip);
130 frame caller = thread->last_frame().sender(&map);
131 assert(caller.is_compiled_frame(), "not being called from compiled like code");
132 return true;
133 }
134 #endif // ASSERT
135
136 /*
137 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, return_pc) \
138 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, return_pc); \
139 if (var == nullptr) { return false; }
140 */
165 C2_STUB_NAME(name), \
166 fancy_jump, \
167 pass_tls, \
168 pass_retpc); \
169 if (C2_STUB_FIELD_NAME(name) == nullptr) { return false; } \
170
171 #define C2_JVMTI_STUB_C_FUNC(name) CAST_FROM_FN_PTR(address, SharedRuntime::name)
172
173 #define GEN_C2_JVMTI_STUB(name) \
174 STUB_FIELD_NAME(name) = \
175 generate_stub(env, \
176 notify_jvmti_vthread_Type, \
177 C2_JVMTI_STUB_C_FUNC(name), \
178 C2_STUB_NAME(name), \
179 0, \
180 true, \
181 false); \
182 if (STUB_FIELD_NAME(name) == nullptr) { return false; } \
183
184 bool OptoRuntime::generate(ciEnv* env) {
185 init_counters();
186
187 C2_STUBS_DO(GEN_C2_BLOB, GEN_C2_STUB, GEN_C2_JVMTI_STUB)
188
189 return true;
190 }
191
192 #undef GEN_C2_BLOB
193
194 #undef C2_STUB_FIELD_NAME
195 #undef C2_STUB_TYPEFUNC
196 #undef C2_STUB_C_FUNC
197 #undef C2_STUB_NAME
198 #undef GEN_C2_STUB
199
200 #undef C2_JVMTI_STUB_C_FUNC
201 #undef GEN_C2_JVMTI_STUB
202 // #undef gen
203
204 const TypeFunc* OptoRuntime::_new_instance_Type = nullptr;
205 const TypeFunc* OptoRuntime::_new_array_Type = nullptr;
259 const TypeFunc* OptoRuntime::_updateBytesAdler32_Type = nullptr;
260 const TypeFunc* OptoRuntime::_osr_end_Type = nullptr;
261 const TypeFunc* OptoRuntime::_register_finalizer_Type = nullptr;
262 #if INCLUDE_JFR
263 const TypeFunc* OptoRuntime::_class_id_load_barrier_Type = nullptr;
264 #endif // INCLUDE_JFR
265 #if INCLUDE_JVMTI
266 const TypeFunc* OptoRuntime::_notify_jvmti_vthread_Type = nullptr;
267 #endif // INCLUDE_JVMTI
268 const TypeFunc* OptoRuntime::_dtrace_method_entry_exit_Type = nullptr;
269 const TypeFunc* OptoRuntime::_dtrace_object_alloc_Type = nullptr;
270
271 // Helper method to do generation of RunTimeStub's
272 address OptoRuntime::generate_stub(ciEnv* env,
273 TypeFunc_generator gen, address C_function,
274 const char *name, int is_fancy_jump,
275 bool pass_tls,
276 bool return_pc) {
277
278 // Matching the default directive, we currently have no method to match.
279 DirectiveSet* directive = DirectivesStack::getDefaultDirective(CompilerThread::current()->compiler());
280 ResourceMark rm;
281 Compile C(env, gen, C_function, name, is_fancy_jump, pass_tls, return_pc, directive);
282 DirectivesStack::release(directive);
283 return C.stub_entry_point();
284 }
285
286 const char* OptoRuntime::stub_name(address entry) {
287 #ifndef PRODUCT
288 CodeBlob* cb = CodeCache::find_blob(entry);
289 RuntimeStub* rs =(RuntimeStub *)cb;
290 assert(rs != nullptr && rs->is_runtime_stub(), "not a runtime stub");
291 return rs->name();
292 #else
293 // Fast implementation for product mode (maybe it should be inlined too)
294 return "runtime stub";
295 #endif
296 }
297
298 // local methods passed as arguments to stub generator that forward
299 // control to corresponding JRT methods of SharedRuntime
302 oopDesc* dest, jint dest_pos,
303 jint length, JavaThread* thread) {
304 SharedRuntime::slow_arraycopy_C(src, src_pos, dest, dest_pos, length, thread);
305 }
306
307 void OptoRuntime::complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* current) {
308 SharedRuntime::complete_monitor_locking_C(obj, lock, current);
309 }
310
311
312 //=============================================================================
313 // Opto compiler runtime routines
314 //=============================================================================
315
316
317 //=============================allocation======================================
318 // We failed the fast-path allocation. Now we need to do a scavenge or GC
319 // and try allocation again.
320
321 // object allocation
322 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_instance_C, OptoRuntime::new_instance_C(Klass* klass, JavaThread* current))
323 JRT_BLOCK;
324 #ifndef PRODUCT
325 SharedRuntime::_new_instance_ctr++; // new instance requires GC
326 #endif
327 assert(check_compiled_frame(current), "incorrect caller");
328
329 // These checks are cheap to make and support reflective allocation.
330 int lh = klass->layout_helper();
331 if (Klass::layout_helper_needs_slow_path(lh) || !InstanceKlass::cast(klass)->is_initialized()) {
332 Handle holder(current, klass->klass_holder()); // keep the klass alive
333 klass->check_valid_for_instantiation(false, THREAD);
334 if (!HAS_PENDING_EXCEPTION) {
335 InstanceKlass::cast(klass)->initialize(THREAD);
336 }
337 }
338
339 if (!HAS_PENDING_EXCEPTION) {
340 // Scavenge and allocate an instance.
341 Handle holder(current, klass->klass_holder()); // keep the klass alive
342 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
343 current->set_vm_result(result);
344
345 // Pass oops back through thread local storage. Our apparent type to Java
346 // is that we return an oop, but we can block on exit from this routine and
347 // a GC can trash the oop in C's return register. The generated stub will
348 // fetch the oop from TLS after any possible GC.
349 }
350
351 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
352 JRT_BLOCK_END;
353
354 // inform GC that we won't do card marks for initializing writes.
355 SharedRuntime::on_slowpath_allocation_exit(current);
356 JRT_END
357
358
359 // array allocation
360 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_array_C, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread* current))
361 JRT_BLOCK;
362 #ifndef PRODUCT
363 SharedRuntime::_new_array_ctr++; // new array requires GC
364 #endif
365 assert(check_compiled_frame(current), "incorrect caller");
366
367 // Scavenge and allocate an instance.
368 oop result;
369
370 if (array_type->is_typeArray_klass()) {
371 // The oopFactory likes to work with the element type.
372 // (We could bypass the oopFactory, since it doesn't add much value.)
373 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
374 result = oopFactory::new_typeArray(elem_type, len, THREAD);
375 } else {
376 // Although the oopFactory likes to work with the elem_type,
377 // the compiler prefers the array_type, since it must already have
378 // that latter value in hand for the fast path.
379 Handle holder(current, array_type->klass_holder()); // keep the array klass alive
380 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
381 result = oopFactory::new_objArray(elem_type, len, THREAD);
382 }
383
384 // Pass oops back through thread local storage. Our apparent type to Java
385 // is that we return an oop, but we can block on exit from this routine and
386 // a GC can trash the oop in C's return register. The generated stub will
387 // fetch the oop from TLS after any possible GC.
388 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
389 current->set_vm_result(result);
390 JRT_BLOCK_END;
391
392 // inform GC that we won't do card marks for initializing writes.
393 SharedRuntime::on_slowpath_allocation_exit(current);
394 JRT_END
395
396 // array allocation without zeroing
397 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_array_nozero_C, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread* current))
398 JRT_BLOCK;
399 #ifndef PRODUCT
400 SharedRuntime::_new_array_ctr++; // new array requires GC
401 #endif
402 assert(check_compiled_frame(current), "incorrect caller");
403
404 // Scavenge and allocate an instance.
405 oop result;
406
407 assert(array_type->is_typeArray_klass(), "should be called only for type array");
408 // The oopFactory likes to work with the element type.
409 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
410 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
411
412 // Pass oops back through thread local storage. Our apparent type to Java
413 // is that we return an oop, but we can block on exit from this routine and
414 // a GC can trash the oop in C's return register. The generated stub will
415 // fetch the oop from TLS after any possible GC.
416 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
417 current->set_vm_result(result);
429 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
430 size_t hs_bytes = arrayOopDesc::base_offset_in_bytes(elem_type);
431 assert(is_aligned(hs_bytes, BytesPerInt), "must be 4 byte aligned");
432 HeapWord* obj = cast_from_oop<HeapWord*>(result);
433 if (!is_aligned(hs_bytes, BytesPerLong)) {
434 *reinterpret_cast<jint*>(reinterpret_cast<char*>(obj) + hs_bytes) = 0;
435 hs_bytes += BytesPerInt;
436 }
437
438 // Optimized zeroing.
439 assert(is_aligned(hs_bytes, BytesPerLong), "must be 8-byte aligned");
440 const size_t aligned_hs = hs_bytes / BytesPerLong;
441 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
442 }
443
444 JRT_END
445
446 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
447
448 // multianewarray for 2 dimensions
449 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray2_C, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread* current))
450 #ifndef PRODUCT
451 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
452 #endif
453 assert(check_compiled_frame(current), "incorrect caller");
454 assert(elem_type->is_klass(), "not a class");
455 jint dims[2];
456 dims[0] = len1;
457 dims[1] = len2;
458 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
459 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
460 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
461 current->set_vm_result(obj);
462 JRT_END
463
464 // multianewarray for 3 dimensions
465 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray3_C, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread* current))
466 #ifndef PRODUCT
467 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
468 #endif
469 assert(check_compiled_frame(current), "incorrect caller");
470 assert(elem_type->is_klass(), "not a class");
471 jint dims[3];
472 dims[0] = len1;
473 dims[1] = len2;
474 dims[2] = len3;
475 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
476 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
477 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
478 current->set_vm_result(obj);
479 JRT_END
480
481 // multianewarray for 4 dimensions
482 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray4_C, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread* current))
483 #ifndef PRODUCT
484 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
485 #endif
486 assert(check_compiled_frame(current), "incorrect caller");
487 assert(elem_type->is_klass(), "not a class");
488 jint dims[4];
489 dims[0] = len1;
490 dims[1] = len2;
491 dims[2] = len3;
492 dims[3] = len4;
493 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
494 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
495 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
496 current->set_vm_result(obj);
497 JRT_END
498
499 // multianewarray for 5 dimensions
500 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread* current))
501 #ifndef PRODUCT
502 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
503 #endif
504 assert(check_compiled_frame(current), "incorrect caller");
505 assert(elem_type->is_klass(), "not a class");
506 jint dims[5];
507 dims[0] = len1;
508 dims[1] = len2;
509 dims[2] = len3;
510 dims[3] = len4;
511 dims[4] = len5;
512 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
513 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
514 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
515 current->set_vm_result(obj);
516 JRT_END
517
518 JRT_ENTRY_PROF(void, OptoRuntime, multianewarrayN_C, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread* current))
519 assert(check_compiled_frame(current), "incorrect caller");
520 assert(elem_type->is_klass(), "not a class");
521 assert(oop(dims)->is_typeArray(), "not an array");
522
523 ResourceMark rm;
524 jint len = dims->length();
525 assert(len > 0, "Dimensions array should contain data");
526 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
527 ArrayAccess<>::arraycopy_to_native<>(dims, typeArrayOopDesc::element_offset<jint>(0),
528 c_dims, len);
529
530 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
531 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
532 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
533 current->set_vm_result(obj);
534 JRT_END
535
536 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, monitor_notify_C, OptoRuntime::monitor_notify_C(oopDesc* obj, JavaThread* current))
537
538 // Very few notify/notifyAll operations find any threads on the waitset, so
539 // the dominant fast-path is to simply return.
540 // Relatedly, it's critical that notify/notifyAll be fast in order to
541 // reduce lock hold times.
542 if (!SafepointSynchronize::is_synchronizing()) {
543 if (ObjectSynchronizer::quick_notify(obj, current, false)) {
544 return;
545 }
546 }
547
548 // This is the case the fast-path above isn't provisioned to handle.
549 // The fast-path is designed to handle frequently arising cases in an efficient manner.
550 // (The fast-path is just a degenerate variant of the slow-path).
551 // Perform the dreaded state transition and pass control into the slow-path.
552 JRT_BLOCK;
553 Handle h_obj(current, obj);
554 ObjectSynchronizer::notify(h_obj, CHECK);
555 JRT_BLOCK_END;
556 JRT_END
557
558 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, monitor_notifyAll_C, OptoRuntime::monitor_notifyAll_C(oopDesc* obj, JavaThread* current))
559
560 if (!SafepointSynchronize::is_synchronizing() ) {
561 if (ObjectSynchronizer::quick_notify(obj, current, true)) {
562 return;
563 }
564 }
565
566 // This is the case the fast-path above isn't provisioned to handle.
567 // The fast-path is designed to handle frequently arising cases in an efficient manner.
568 // (The fast-path is just a degenerate variant of the slow-path).
569 // Perform the dreaded state transition and pass control into the slow-path.
570 JRT_BLOCK;
571 Handle h_obj(current, obj);
572 ObjectSynchronizer::notifyall(h_obj, CHECK);
573 JRT_BLOCK_END;
574 JRT_END
575
576 static const TypeFunc* make_new_instance_Type() {
577 // create input type (domain)
578 const Type **fields = TypeTuple::fields(1);
1525 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1526 switch (register_save_policy[reg]) {
1527 case 'C': return false; //SOC
1528 case 'E': return true ; //SOE
1529 case 'N': return false; //NS
1530 case 'A': return false; //AS
1531 }
1532 ShouldNotReachHere();
1533 return false;
1534 }
1535
1536 //-----------------------------------------------------------------------
1537 // Exceptions
1538 //
1539
1540 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg);
1541
1542 // The method is an entry that is always called by a C++ method not
1543 // directly from compiled code. Compiled code will call the C++ method following.
1544 // We can't allow async exception to be installed during exception processing.
1545 JRT_ENTRY_NO_ASYNC_PROF(address, OptoRuntime, handle_exception_C_helper, OptoRuntime::handle_exception_C_helper(JavaThread* current, nmethod* &nm))
1546 // The frame we rethrow the exception to might not have been processed by the GC yet.
1547 // The stack watermark barrier takes care of detecting that and ensuring the frame
1548 // has updated oops.
1549 StackWatermarkSet::after_unwind(current);
1550
1551 // Do not confuse exception_oop with pending_exception. The exception_oop
1552 // is only used to pass arguments into the method. Not for general
1553 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1554 // the runtime stubs checks this on exit.
1555 assert(current->exception_oop() != nullptr, "exception oop is found");
1556 address handler_address = nullptr;
1557
1558 Handle exception(current, current->exception_oop());
1559 address pc = current->exception_pc();
1560
1561 // Clear out the exception oop and pc since looking up an
1562 // exception handler can cause class loading, which might throw an
1563 // exception and those fields are expected to be clear during
1564 // normal bytecode execution.
1565 current->clear_exception_oop_and_pc();
1799 frame caller_frame = stub_frame.sender(®_map);
1800 return caller_frame.is_deoptimized_frame();
1801 }
1802
1803 static const TypeFunc* make_register_finalizer_Type() {
1804 // create input type (domain)
1805 const Type **fields = TypeTuple::fields(1);
1806 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1807 // // The JavaThread* is passed to each routine as the last argument
1808 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1809 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1810
1811 // create result type (range)
1812 fields = TypeTuple::fields(0);
1813
1814 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1815
1816 return TypeFunc::make(domain,range);
1817 }
1818
1819 const TypeFunc *OptoRuntime::class_init_barrier_Type() {
1820 // create input type (domain)
1821 const Type** fields = TypeTuple::fields(1);
1822 fields[TypeFunc::Parms+0] = TypeKlassPtr::NOTNULL;
1823 // // The JavaThread* is passed to each routine as the last argument
1824 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1825 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+1, fields);
1826
1827 // create result type (range)
1828 fields = TypeTuple::fields(0);
1829 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
1830 return TypeFunc::make(domain,range);
1831 }
1832
1833 #if INCLUDE_JFR
1834 static const TypeFunc* make_class_id_load_barrier_Type() {
1835 // create input type (domain)
1836 const Type **fields = TypeTuple::fields(1);
1837 fields[TypeFunc::Parms+0] = TypeInstPtr::KLASS;
1838 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms + 1, fields);
1839
1840 // create result type (range)
1841 fields = TypeTuple::fields(0);
1842
1843 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms + 0, fields);
1844
1845 return TypeFunc::make(domain,range);
1846 }
1847 #endif // INCLUDE_JFR
1848
1849 //-----------------------------------------------------------------------------
1850 // runtime upcall support
1851 const TypeFunc *OptoRuntime::runtime_up_call_Type() {
1852 // create input type (domain)
1853 const Type **fields = TypeTuple::fields(1);
1854 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1855 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1856
1857 // create result type (range)
1858 fields = TypeTuple::fields(0);
1859
1860 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1861
1862 return TypeFunc::make(domain,range);
1863 }
1864
1865 //-----------------------------------------------------------------------------
1866 static const TypeFunc* make_dtrace_method_entry_exit_Type() {
1867 // create input type (domain)
1868 const Type **fields = TypeTuple::fields(2);
1869 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1870 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1871 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1872
1873 // create result type (range)
1874 fields = TypeTuple::fields(0);
1875
1876 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1877
1878 return TypeFunc::make(domain,range);
1879 }
1880
1881 static const TypeFunc* make_dtrace_object_alloc_Type() {
1882 // create input type (domain)
1883 const Type **fields = TypeTuple::fields(2);
1884 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1885 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1886
1887 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1888
1889 // create result type (range)
1890 fields = TypeTuple::fields(0);
1891
1892 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1893
1894 return TypeFunc::make(domain,range);
1895 }
1896
1897 JRT_ENTRY_NO_ASYNC_PROF(void, OptoRuntime, register_finalizer_C, OptoRuntime::register_finalizer_C(oopDesc* obj, JavaThread* current))
1898 assert(oopDesc::is_oop(obj), "must be a valid oop");
1899 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1900 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1901 JRT_END
1902
1903 JRT_ENTRY_NO_ASYNC_PROF(void, OptoRuntime, class_init_barrier_C, OptoRuntime::class_init_barrier_C(Klass* k, JavaThread* current))
1904 InstanceKlass* ik = InstanceKlass::cast(k);
1905 if (ik->should_be_initialized()) {
1906 ik->initialize(CHECK);
1907 } else if (UsePerfData) {
1908 _perf_OptoRuntime_class_init_barrier_redundant_count->inc();
1909 }
1910 JRT_END
1911
1912 //-----------------------------------------------------------------------------
1913
1914 NamedCounter * volatile OptoRuntime::_named_counters = nullptr;
1915
1916 //
1917 // dump the collected NamedCounters.
1918 //
1919 void OptoRuntime::print_named_counters() {
1920 int total_lock_count = 0;
1921 int eliminated_lock_count = 0;
1922
1923 NamedCounter* c = _named_counters;
1924 while (c) {
1925 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1926 int count = c->count();
1927 if (count > 0) {
1928 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1929 if (Verbose) {
1930 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1931 }
2061 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg) {
2062 trace_exception_counter++;
2063 stringStream tempst;
2064
2065 tempst.print("%d [Exception (%s): ", trace_exception_counter, msg);
2066 exception_oop->print_value_on(&tempst);
2067 tempst.print(" in ");
2068 CodeBlob* blob = CodeCache::find_blob(exception_pc);
2069 if (blob->is_nmethod()) {
2070 blob->as_nmethod()->method()->print_value_on(&tempst);
2071 } else if (blob->is_runtime_stub()) {
2072 tempst.print("<runtime-stub>");
2073 } else {
2074 tempst.print("<unknown>");
2075 }
2076 tempst.print(" at " INTPTR_FORMAT, p2i(exception_pc));
2077 tempst.print("]");
2078
2079 st->print_raw_cr(tempst.freeze());
2080 }
2081
2082 #define DO_COUNTERS2(macro2, macro1) \
2083 macro2(OptoRuntime, new_instance_C) \
2084 macro2(OptoRuntime, new_array_C) \
2085 macro2(OptoRuntime, new_array_nozero_C) \
2086 macro2(OptoRuntime, multianewarray2_C) \
2087 macro2(OptoRuntime, multianewarray3_C) \
2088 macro2(OptoRuntime, multianewarray4_C) \
2089 macro2(OptoRuntime, multianewarrayN_C) \
2090 macro2(OptoRuntime, monitor_notify_C) \
2091 macro2(OptoRuntime, monitor_notifyAll_C) \
2092 macro2(OptoRuntime, handle_exception_C_helper) \
2093 macro2(OptoRuntime, register_finalizer_C) \
2094 macro2(OptoRuntime, class_init_barrier_C) \
2095 macro1(OptoRuntime, class_init_barrier_redundant)
2096
2097 #define INIT_COUNTER_TIME_AND_CNT(sub, name) \
2098 NEWPERFTICKCOUNTERS(_perf_##sub##_##name##_timer, SUN_CI, #sub "::" #name); \
2099 NEWPERFEVENTCOUNTER(_perf_##sub##_##name##_count, SUN_CI, #sub "::" #name "_count");
2100
2101 #define INIT_COUNTER_CNT(sub, name) \
2102 NEWPERFEVENTCOUNTER(_perf_##sub##_##name##_count, SUN_CI, #sub "::" #name "_count");
2103
2104 void OptoRuntime::init_counters() {
2105 assert(CompilerConfig::is_c2_enabled(), "");
2106
2107 if (UsePerfData) {
2108 EXCEPTION_MARK;
2109
2110 DO_COUNTERS2(INIT_COUNTER_TIME_AND_CNT, INIT_COUNTER_CNT)
2111
2112 if (HAS_PENDING_EXCEPTION) {
2113 vm_exit_during_initialization("jvm_perf_init failed unexpectedly");
2114 }
2115 }
2116 }
2117 #undef INIT_COUNTER_TIME_AND_CNT
2118 #undef INIT_COUNTER_CNT
2119
2120 #define PRINT_COUNTER_TIME_AND_CNT(sub, name) { \
2121 jlong count = _perf_##sub##_##name##_count->get_value(); \
2122 if (count > 0) { \
2123 st->print_cr(" %-50s = " JLONG_FORMAT_W(6) "us (elapsed) " JLONG_FORMAT_W(6) "us (thread) (" JLONG_FORMAT_W(5) " events)", #sub "::" #name, \
2124 _perf_##sub##_##name##_timer->elapsed_counter_value_us(), \
2125 _perf_##sub##_##name##_timer->thread_counter_value_us(), \
2126 count); \
2127 }}
2128
2129 #define PRINT_COUNTER_CNT(sub, name) { \
2130 jlong count = _perf_##sub##_##name##_count->get_value(); \
2131 if (count > 0) { \
2132 st->print_cr(" %-30s = " JLONG_FORMAT_W(5) " events", #name, count); \
2133 }}
2134
2135 void OptoRuntime::print_counters_on(outputStream* st) {
2136 if (UsePerfData && ProfileRuntimeCalls && CompilerConfig::is_c2_enabled()) {
2137 DO_COUNTERS2(PRINT_COUNTER_TIME_AND_CNT, PRINT_COUNTER_CNT)
2138 } else {
2139 st->print_cr(" OptoRuntime: no info (%s is disabled)",
2140 (!CompilerConfig::is_c2_enabled() ? "C2" : (UsePerfData ? "ProfileRuntimeCalls" : "UsePerfData")));
2141 }
2142 }
2143
2144 #undef PRINT_COUNTER_TIME_AND_CNT
2145 #undef PRINT_COUNTER_CNT
2146 #undef DO_COUNTERS2
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