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/compilationMemoryStatistic.hpp"
34 #include "compiler/compileBroker.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/javaCalls.hpp"
69 #include "runtime/sharedRuntime.hpp"
70 #include "runtime/signature.hpp"
71 #include "runtime/stackWatermarkSet.hpp"
72 #include "runtime/synchronizer.hpp"
73 #include "runtime/threadCritical.hpp"
74 #include "runtime/threadWXSetters.inline.hpp"
75 #include "runtime/vframe.hpp"
76 #include "runtime/vframeArray.hpp"
77 #include "runtime/vframe_hp.hpp"
78 #include "utilities/copy.hpp"
79 #include "utilities/preserveException.hpp"
80
81
82 // For debugging purposes:
83 // To force FullGCALot inside a runtime function, add the following two lines
84 //
85 // Universe::release_fullgc_alot_dummy();
86 // Universe::heap()->collect();
87 //
88 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
89
90
91 #define C2_BLOB_FIELD_DEFINE(name, type) \
92 type OptoRuntime:: BLOB_FIELD_NAME(name) = nullptr;
93 #define C2_STUB_FIELD_NAME(name) _ ## name ## _Java
94 #define C2_STUB_FIELD_DEFINE(name, f, t, r) \
95 address OptoRuntime:: C2_STUB_FIELD_NAME(name) = nullptr;
96 #define C2_JVMTI_STUB_FIELD_DEFINE(name) \
97 address OptoRuntime:: STUB_FIELD_NAME(name) = nullptr;
98 C2_STUBS_DO(C2_BLOB_FIELD_DEFINE, C2_STUB_FIELD_DEFINE, C2_JVMTI_STUB_FIELD_DEFINE)
99 #undef C2_BLOB_FIELD_DEFINE
100 #undef C2_STUB_FIELD_DEFINE
101 #undef C2_JVMTI_STUB_FIELD_DEFINE
102
103 #define C2_BLOB_NAME_DEFINE(name, type) "C2 Runtime " # name "_blob",
104 #define C2_STUB_NAME_DEFINE(name, f, t, r) "C2 Runtime " # name,
105 #define C2_JVMTI_STUB_NAME_DEFINE(name) "C2 Runtime " # name,
106 const char* OptoRuntime::_stub_names[] = {
107 C2_STUBS_DO(C2_BLOB_NAME_DEFINE, C2_STUB_NAME_DEFINE, C2_JVMTI_STUB_NAME_DEFINE)
108 };
109 #undef C2_BLOB_NAME_DEFINE
110 #undef C2_STUB_NAME_DEFINE
111 #undef C2_JVMTI_STUB_NAME_DEFINE
112
113 // This should be called in an assertion at the start of OptoRuntime routines
114 // which are entered from compiled code (all of them)
115 #ifdef ASSERT
116 static bool check_compiled_frame(JavaThread* thread) {
117 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
118 RegisterMap map(thread,
119 RegisterMap::UpdateMap::skip,
120 RegisterMap::ProcessFrames::include,
121 RegisterMap::WalkContinuation::skip);
122 frame caller = thread->last_frame().sender(&map);
123 assert(caller.is_compiled_frame(), "not being called from compiled like code");
124 return true;
125 }
126 #endif // ASSERT
127
128 /*
129 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, return_pc) \
130 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, return_pc); \
131 if (var == nullptr) { return false; }
132 */
159 C2_STUB_NAME(name), \
160 fancy_jump, \
161 pass_tls, \
162 pass_retpc); \
163 if (C2_STUB_FIELD_NAME(name) == nullptr) { return false; } \
164
165 #define C2_JVMTI_STUB_C_FUNC(name) CAST_FROM_FN_PTR(address, SharedRuntime::name)
166
167 #define GEN_C2_JVMTI_STUB(name) \
168 STUB_FIELD_NAME(name) = \
169 generate_stub(env, \
170 notify_jvmti_vthread_Type, \
171 C2_JVMTI_STUB_C_FUNC(name), \
172 C2_STUB_NAME(name), \
173 0, \
174 true, \
175 false); \
176 if (STUB_FIELD_NAME(name) == nullptr) { return false; } \
177
178 bool OptoRuntime::generate(ciEnv* env) {
179
180 C2_STUBS_DO(GEN_C2_BLOB, GEN_C2_STUB, GEN_C2_JVMTI_STUB)
181
182 return true;
183 }
184
185 #undef GEN_C2_BLOB
186
187 #undef C2_STUB_FIELD_NAME
188 #undef C2_STUB_TYPEFUNC
189 #undef C2_STUB_C_FUNC
190 #undef C2_STUB_NAME
191 #undef GEN_C2_STUB
192
193 #undef C2_JVMTI_STUB_C_FUNC
194 #undef GEN_C2_JVMTI_STUB
195 // #undef gen
196
197 const TypeFunc* OptoRuntime::_new_instance_Type = nullptr;
198 const TypeFunc* OptoRuntime::_new_array_Type = nullptr;
260 const TypeFunc* OptoRuntime::_updateBytesAdler32_Type = nullptr;
261 const TypeFunc* OptoRuntime::_osr_end_Type = nullptr;
262 const TypeFunc* OptoRuntime::_register_finalizer_Type = nullptr;
263 #if INCLUDE_JFR
264 const TypeFunc* OptoRuntime::_class_id_load_barrier_Type = nullptr;
265 #endif // INCLUDE_JFR
266 #if INCLUDE_JVMTI
267 const TypeFunc* OptoRuntime::_notify_jvmti_vthread_Type = nullptr;
268 #endif // INCLUDE_JVMTI
269 const TypeFunc* OptoRuntime::_dtrace_method_entry_exit_Type = nullptr;
270 const TypeFunc* OptoRuntime::_dtrace_object_alloc_Type = nullptr;
271
272 // Helper method to do generation of RunTimeStub's
273 address OptoRuntime::generate_stub(ciEnv* env,
274 TypeFunc_generator gen, address C_function,
275 const char *name, int is_fancy_jump,
276 bool pass_tls,
277 bool return_pc) {
278
279 // Matching the default directive, we currently have no method to match.
280 DirectiveSet* directive = DirectivesStack::getDefaultDirective(CompileBroker::compiler(CompLevel_full_optimization));
281 CompilationMemoryStatisticMark cmsm(directive);
282 ResourceMark rm;
283 Compile C(env, gen, C_function, name, is_fancy_jump, pass_tls, return_pc, directive);
284 DirectivesStack::release(directive);
285 return C.stub_entry_point();
286 }
287
288 const char* OptoRuntime::stub_name(address entry) {
289 #ifndef PRODUCT
290 CodeBlob* cb = CodeCache::find_blob(entry);
291 RuntimeStub* rs =(RuntimeStub *)cb;
292 assert(rs != nullptr && rs->is_runtime_stub(), "not a runtime stub");
293 return rs->name();
294 #else
295 // Fast implementation for product mode (maybe it should be inlined too)
296 return "runtime stub";
297 #endif
298 }
299
300 // local methods passed as arguments to stub generator that forward
304 oopDesc* dest, jint dest_pos,
305 jint length, JavaThread* thread) {
306 SharedRuntime::slow_arraycopy_C(src, src_pos, dest, dest_pos, length, thread);
307 }
308
309 void OptoRuntime::complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* current) {
310 SharedRuntime::complete_monitor_locking_C(obj, lock, current);
311 }
312
313
314 //=============================================================================
315 // Opto compiler runtime routines
316 //=============================================================================
317
318
319 //=============================allocation======================================
320 // We failed the fast-path allocation. Now we need to do a scavenge or GC
321 // and try allocation again.
322
323 // object allocation
324 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* current))
325 JRT_BLOCK;
326 #ifndef PRODUCT
327 SharedRuntime::_new_instance_ctr++; // new instance requires GC
328 #endif
329 assert(check_compiled_frame(current), "incorrect caller");
330
331 // These checks are cheap to make and support reflective allocation.
332 int lh = klass->layout_helper();
333 if (Klass::layout_helper_needs_slow_path(lh) || !InstanceKlass::cast(klass)->is_initialized()) {
334 Handle holder(current, klass->klass_holder()); // keep the klass alive
335 klass->check_valid_for_instantiation(false, THREAD);
336 if (!HAS_PENDING_EXCEPTION) {
337 InstanceKlass::cast(klass)->initialize(THREAD);
338 }
339 }
340
341 if (!HAS_PENDING_EXCEPTION) {
342 // Scavenge and allocate an instance.
343 Handle holder(current, klass->klass_holder()); // keep the klass alive
344 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
345 current->set_vm_result(result);
346
347 // Pass oops back through thread local storage. Our apparent type to Java
348 // is that we return an oop, but we can block on exit from this routine and
349 // a GC can trash the oop in C's return register. The generated stub will
350 // fetch the oop from TLS after any possible GC.
351 }
352
353 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
354 JRT_BLOCK_END;
355
356 // inform GC that we won't do card marks for initializing writes.
357 SharedRuntime::on_slowpath_allocation_exit(current);
358 JRT_END
359
360
361 // array allocation
362 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread* current))
363 JRT_BLOCK;
364 #ifndef PRODUCT
365 SharedRuntime::_new_array_ctr++; // new array requires GC
366 #endif
367 assert(check_compiled_frame(current), "incorrect caller");
368
369 // Scavenge and allocate an instance.
370 oop result;
371
372 if (array_type->is_typeArray_klass()) {
373 // The oopFactory likes to work with the element type.
374 // (We could bypass the oopFactory, since it doesn't add much value.)
375 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
376 result = oopFactory::new_typeArray(elem_type, len, THREAD);
377 } else {
378 // Although the oopFactory likes to work with the elem_type,
379 // the compiler prefers the array_type, since it must already have
380 // that latter value in hand for the fast path.
381 Handle holder(current, array_type->klass_holder()); // keep the array klass alive
382 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
383 result = oopFactory::new_objArray(elem_type, len, THREAD);
384 }
385
386 // Pass oops back through thread local storage. Our apparent type to Java
387 // is that we return an oop, but we can block on exit from this routine and
388 // a GC can trash the oop in C's return register. The generated stub will
389 // fetch the oop from TLS after any possible GC.
390 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
391 current->set_vm_result(result);
392 JRT_BLOCK_END;
393
394 // inform GC that we won't do card marks for initializing writes.
395 SharedRuntime::on_slowpath_allocation_exit(current);
396 JRT_END
397
398 // array allocation without zeroing
399 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread* current))
400 JRT_BLOCK;
401 #ifndef PRODUCT
402 SharedRuntime::_new_array_ctr++; // new array requires GC
403 #endif
404 assert(check_compiled_frame(current), "incorrect caller");
405
406 // Scavenge and allocate an instance.
407 oop result;
408
409 assert(array_type->is_typeArray_klass(), "should be called only for type array");
410 // The oopFactory likes to work with the element type.
411 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
412 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
413
414 // Pass oops back through thread local storage. Our apparent type to Java
415 // is that we return an oop, but we can block on exit from this routine and
416 // a GC can trash the oop in C's return register. The generated stub will
417 // fetch the oop from TLS after any possible GC.
418 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
419 current->set_vm_result(result);
431 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
432 size_t hs_bytes = arrayOopDesc::base_offset_in_bytes(elem_type);
433 assert(is_aligned(hs_bytes, BytesPerInt), "must be 4 byte aligned");
434 HeapWord* obj = cast_from_oop<HeapWord*>(result);
435 if (!is_aligned(hs_bytes, BytesPerLong)) {
436 *reinterpret_cast<jint*>(reinterpret_cast<char*>(obj) + hs_bytes) = 0;
437 hs_bytes += BytesPerInt;
438 }
439
440 // Optimized zeroing.
441 assert(is_aligned(hs_bytes, BytesPerLong), "must be 8-byte aligned");
442 const size_t aligned_hs = hs_bytes / BytesPerLong;
443 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
444 }
445
446 JRT_END
447
448 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
449
450 // multianewarray for 2 dimensions
451 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread* current))
452 #ifndef PRODUCT
453 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
454 #endif
455 assert(check_compiled_frame(current), "incorrect caller");
456 assert(elem_type->is_klass(), "not a class");
457 jint dims[2];
458 dims[0] = len1;
459 dims[1] = len2;
460 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
461 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
462 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
463 current->set_vm_result(obj);
464 JRT_END
465
466 // multianewarray for 3 dimensions
467 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread* current))
468 #ifndef PRODUCT
469 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
470 #endif
471 assert(check_compiled_frame(current), "incorrect caller");
472 assert(elem_type->is_klass(), "not a class");
473 jint dims[3];
474 dims[0] = len1;
475 dims[1] = len2;
476 dims[2] = len3;
477 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
478 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
479 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
480 current->set_vm_result(obj);
481 JRT_END
482
483 // multianewarray for 4 dimensions
484 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread* current))
485 #ifndef PRODUCT
486 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
487 #endif
488 assert(check_compiled_frame(current), "incorrect caller");
489 assert(elem_type->is_klass(), "not a class");
490 jint dims[4];
491 dims[0] = len1;
492 dims[1] = len2;
493 dims[2] = len3;
494 dims[3] = len4;
495 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
496 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
497 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
498 current->set_vm_result(obj);
499 JRT_END
500
501 // multianewarray for 5 dimensions
502 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread* current))
503 #ifndef PRODUCT
504 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
505 #endif
506 assert(check_compiled_frame(current), "incorrect caller");
507 assert(elem_type->is_klass(), "not a class");
508 jint dims[5];
509 dims[0] = len1;
510 dims[1] = len2;
511 dims[2] = len3;
512 dims[3] = len4;
513 dims[4] = len5;
514 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
515 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
516 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
517 current->set_vm_result(obj);
518 JRT_END
519
520 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread* current))
521 assert(check_compiled_frame(current), "incorrect caller");
522 assert(elem_type->is_klass(), "not a class");
523 assert(oop(dims)->is_typeArray(), "not an array");
524
525 ResourceMark rm;
526 jint len = dims->length();
527 assert(len > 0, "Dimensions array should contain data");
528 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
529 ArrayAccess<>::arraycopy_to_native<>(dims, typeArrayOopDesc::element_offset<jint>(0),
530 c_dims, len);
531
532 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
533 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
534 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
535 current->set_vm_result(obj);
536 JRT_END
537
538 JRT_BLOCK_ENTRY(void, OptoRuntime::monitor_notify_C(oopDesc* obj, JavaThread* current))
539
540 // Very few notify/notifyAll operations find any threads on the waitset, so
541 // the dominant fast-path is to simply return.
542 // Relatedly, it's critical that notify/notifyAll be fast in order to
543 // reduce lock hold times.
544 if (!SafepointSynchronize::is_synchronizing()) {
545 if (ObjectSynchronizer::quick_notify(obj, current, false)) {
546 return;
547 }
548 }
549
550 // This is the case the fast-path above isn't provisioned to handle.
551 // The fast-path is designed to handle frequently arising cases in an efficient manner.
552 // (The fast-path is just a degenerate variant of the slow-path).
553 // Perform the dreaded state transition and pass control into the slow-path.
554 JRT_BLOCK;
555 Handle h_obj(current, obj);
556 ObjectSynchronizer::notify(h_obj, CHECK);
557 JRT_BLOCK_END;
558 JRT_END
559
560 JRT_BLOCK_ENTRY(void, OptoRuntime::monitor_notifyAll_C(oopDesc* obj, JavaThread* current))
561
562 if (!SafepointSynchronize::is_synchronizing() ) {
563 if (ObjectSynchronizer::quick_notify(obj, current, true)) {
564 return;
565 }
566 }
567
568 // This is the case the fast-path above isn't provisioned to handle.
569 // The fast-path is designed to handle frequently arising cases in an efficient manner.
570 // (The fast-path is just a degenerate variant of the slow-path).
571 // Perform the dreaded state transition and pass control into the slow-path.
572 JRT_BLOCK;
573 Handle h_obj(current, obj);
574 ObjectSynchronizer::notifyall(h_obj, CHECK);
575 JRT_BLOCK_END;
576 JRT_END
577
578 static const TypeFunc* make_new_instance_Type() {
579 // create input type (domain)
580 const Type **fields = TypeTuple::fields(1);
1648 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1649 switch (register_save_policy[reg]) {
1650 case 'C': return false; //SOC
1651 case 'E': return true ; //SOE
1652 case 'N': return false; //NS
1653 case 'A': return false; //AS
1654 }
1655 ShouldNotReachHere();
1656 return false;
1657 }
1658
1659 //-----------------------------------------------------------------------
1660 // Exceptions
1661 //
1662
1663 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg);
1664
1665 // The method is an entry that is always called by a C++ method not
1666 // directly from compiled code. Compiled code will call the C++ method following.
1667 // We can't allow async exception to be installed during exception processing.
1668 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* current, nmethod* &nm))
1669 // The frame we rethrow the exception to might not have been processed by the GC yet.
1670 // The stack watermark barrier takes care of detecting that and ensuring the frame
1671 // has updated oops.
1672 StackWatermarkSet::after_unwind(current);
1673
1674 // Do not confuse exception_oop with pending_exception. The exception_oop
1675 // is only used to pass arguments into the method. Not for general
1676 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1677 // the runtime stubs checks this on exit.
1678 assert(current->exception_oop() != nullptr, "exception oop is found");
1679 address handler_address = nullptr;
1680
1681 Handle exception(current, current->exception_oop());
1682 address pc = current->exception_pc();
1683
1684 // Clear out the exception oop and pc since looking up an
1685 // exception handler can cause class loading, which might throw an
1686 // exception and those fields are expected to be clear during
1687 // normal bytecode execution.
1688 current->clear_exception_oop_and_pc();
1921 frame caller_frame = stub_frame.sender(®_map);
1922 return caller_frame.is_deoptimized_frame();
1923 }
1924
1925 static const TypeFunc* make_register_finalizer_Type() {
1926 // create input type (domain)
1927 const Type **fields = TypeTuple::fields(1);
1928 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1929 // // The JavaThread* is passed to each routine as the last argument
1930 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1931 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1932
1933 // create result type (range)
1934 fields = TypeTuple::fields(0);
1935
1936 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1937
1938 return TypeFunc::make(domain,range);
1939 }
1940
1941 #if INCLUDE_JFR
1942 static const TypeFunc* make_class_id_load_barrier_Type() {
1943 // create input type (domain)
1944 const Type **fields = TypeTuple::fields(1);
1945 fields[TypeFunc::Parms+0] = TypeInstPtr::KLASS;
1946 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms + 1, fields);
1947
1948 // create result type (range)
1949 fields = TypeTuple::fields(0);
1950
1951 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms + 0, fields);
1952
1953 return TypeFunc::make(domain,range);
1954 }
1955 #endif // INCLUDE_JFR
1956
1957 //-----------------------------------------------------------------------------
1958 static const TypeFunc* make_dtrace_method_entry_exit_Type() {
1959 // create input type (domain)
1960 const Type **fields = TypeTuple::fields(2);
1961 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1962 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1963 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1964
1965 // create result type (range)
1966 fields = TypeTuple::fields(0);
1967
1968 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1969
1970 return TypeFunc::make(domain,range);
1971 }
1972
1973 static const TypeFunc* make_dtrace_object_alloc_Type() {
1974 // create input type (domain)
1975 const Type **fields = TypeTuple::fields(2);
1976 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1977 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1978
1979 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1980
1981 // create result type (range)
1982 fields = TypeTuple::fields(0);
1983
1984 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1985
1986 return TypeFunc::make(domain,range);
1987 }
1988
1989 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer_C(oopDesc* obj, JavaThread* current))
1990 assert(oopDesc::is_oop(obj), "must be a valid oop");
1991 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1992 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1993 JRT_END
1994
1995 //-----------------------------------------------------------------------------
1996
1997 NamedCounter * volatile OptoRuntime::_named_counters = nullptr;
1998
1999 //
2000 // dump the collected NamedCounters.
2001 //
2002 void OptoRuntime::print_named_counters() {
2003 int total_lock_count = 0;
2004 int eliminated_lock_count = 0;
2005
2006 NamedCounter* c = _named_counters;
2007 while (c) {
2008 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
2009 int count = c->count();
2010 if (count > 0) {
2011 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
2012 if (Verbose) {
2013 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
2014 }
2152 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg) {
2153 trace_exception_counter++;
2154 stringStream tempst;
2155
2156 tempst.print("%d [Exception (%s): ", trace_exception_counter, msg);
2157 exception_oop->print_value_on(&tempst);
2158 tempst.print(" in ");
2159 CodeBlob* blob = CodeCache::find_blob(exception_pc);
2160 if (blob->is_nmethod()) {
2161 blob->as_nmethod()->method()->print_value_on(&tempst);
2162 } else if (blob->is_runtime_stub()) {
2163 tempst.print("<runtime-stub>");
2164 } else {
2165 tempst.print("<unknown>");
2166 }
2167 tempst.print(" at " INTPTR_FORMAT, p2i(exception_pc));
2168 tempst.print("]");
2169
2170 st->print_raw_cr(tempst.freeze());
2171 }
|
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/compilationMemoryStatistic.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerDefinitions.inline.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc/g1/g1HeapRegion.hpp"
38 #include "gc/shared/barrierSet.hpp"
39 #include "gc/shared/collectedHeap.hpp"
40 #include "gc/shared/gcLocker.hpp"
41 #include "interpreter/bytecode.hpp"
42 #include "interpreter/interpreter.hpp"
43 #include "interpreter/linkResolver.hpp"
44 #include "logging/log.hpp"
45 #include "logging/logStream.hpp"
46 #include "memory/oopFactory.hpp"
47 #include "memory/resourceArea.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/klass.inline.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "oops/typeArrayOop.inline.hpp"
52 #include "opto/ad.hpp"
53 #include "opto/addnode.hpp"
54 #include "opto/callnode.hpp"
55 #include "opto/cfgnode.hpp"
56 #include "opto/graphKit.hpp"
57 #include "opto/machnode.hpp"
58 #include "opto/matcher.hpp"
59 #include "opto/memnode.hpp"
60 #include "opto/mulnode.hpp"
61 #include "opto/output.hpp"
62 #include "opto/runtime.hpp"
63 #include "opto/subnode.hpp"
64 #include "prims/jvmtiExport.hpp"
65 #include "runtime/atomic.hpp"
66 #include "runtime/frame.inline.hpp"
67 #include "runtime/handles.inline.hpp"
68 #include "runtime/interfaceSupport.inline.hpp"
69 #include "runtime/java.hpp"
70 #include "runtime/javaCalls.hpp"
71 #include "runtime/perfData.inline.hpp"
72 #include "runtime/sharedRuntime.hpp"
73 #include "runtime/signature.hpp"
74 #include "runtime/stackWatermarkSet.hpp"
75 #include "runtime/synchronizer.hpp"
76 #include "runtime/threadCritical.hpp"
77 #include "runtime/threadWXSetters.inline.hpp"
78 #include "runtime/vframe.hpp"
79 #include "runtime/vframeArray.hpp"
80 #include "runtime/vframe_hp.hpp"
81 #include "services/management.hpp"
82 #include "utilities/copy.hpp"
83 #include "utilities/preserveException.hpp"
84
85
86 // For debugging purposes:
87 // To force FullGCALot inside a runtime function, add the following two lines
88 //
89 // Universe::release_fullgc_alot_dummy();
90 // Universe::heap()->collect();
91 //
92 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
93
94
95 #define C2_BLOB_FIELD_DEFINE(name, type) \
96 type OptoRuntime:: BLOB_FIELD_NAME(name) = nullptr;
97 #define C2_STUB_FIELD_NAME(name) _ ## name ## _Java
98 #define C2_STUB_FIELD_DEFINE(name, f, t, r) \
99 address OptoRuntime:: C2_STUB_FIELD_NAME(name) = nullptr;
100 #define C2_JVMTI_STUB_FIELD_DEFINE(name) \
101 address OptoRuntime:: STUB_FIELD_NAME(name) = nullptr;
102 C2_STUBS_DO(C2_BLOB_FIELD_DEFINE, C2_STUB_FIELD_DEFINE, C2_JVMTI_STUB_FIELD_DEFINE)
103 #undef C2_BLOB_FIELD_DEFINE
104 #undef C2_STUB_FIELD_DEFINE
105 #undef C2_JVMTI_STUB_FIELD_DEFINE
106
107
108 #define C2_BLOB_NAME_DEFINE(name, type) "C2 Runtime " # name "_blob",
109 #define C2_STUB_NAME_DEFINE(name, f, t, r) "C2 Runtime " # name,
110 #define C2_JVMTI_STUB_NAME_DEFINE(name) "C2 Runtime " # name,
111 const char* OptoRuntime::_stub_names[] = {
112 C2_STUBS_DO(C2_BLOB_NAME_DEFINE, C2_STUB_NAME_DEFINE, C2_JVMTI_STUB_NAME_DEFINE)
113 };
114 #undef C2_BLOB_NAME_DEFINE
115 #undef C2_STUB_NAME_DEFINE
116 #undef C2_JVMTI_STUB_NAME_DEFINE
117
118 address OptoRuntime::_vtable_must_compile_Java = nullptr;
119
120 PerfCounter* _perf_OptoRuntime_class_init_barrier_redundant_count = nullptr;
121
122 // This should be called in an assertion at the start of OptoRuntime routines
123 // which are entered from compiled code (all of them)
124 #ifdef ASSERT
125 static bool check_compiled_frame(JavaThread* thread) {
126 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
127 RegisterMap map(thread,
128 RegisterMap::UpdateMap::skip,
129 RegisterMap::ProcessFrames::include,
130 RegisterMap::WalkContinuation::skip);
131 frame caller = thread->last_frame().sender(&map);
132 assert(caller.is_compiled_frame(), "not being called from compiled like code");
133 return true;
134 }
135 #endif // ASSERT
136
137 /*
138 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, return_pc) \
139 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, return_pc); \
140 if (var == nullptr) { return false; }
141 */
168 C2_STUB_NAME(name), \
169 fancy_jump, \
170 pass_tls, \
171 pass_retpc); \
172 if (C2_STUB_FIELD_NAME(name) == nullptr) { return false; } \
173
174 #define C2_JVMTI_STUB_C_FUNC(name) CAST_FROM_FN_PTR(address, SharedRuntime::name)
175
176 #define GEN_C2_JVMTI_STUB(name) \
177 STUB_FIELD_NAME(name) = \
178 generate_stub(env, \
179 notify_jvmti_vthread_Type, \
180 C2_JVMTI_STUB_C_FUNC(name), \
181 C2_STUB_NAME(name), \
182 0, \
183 true, \
184 false); \
185 if (STUB_FIELD_NAME(name) == nullptr) { return false; } \
186
187 bool OptoRuntime::generate(ciEnv* env) {
188 init_counters();
189
190 C2_STUBS_DO(GEN_C2_BLOB, GEN_C2_STUB, GEN_C2_JVMTI_STUB)
191
192 return true;
193 }
194
195 #undef GEN_C2_BLOB
196
197 #undef C2_STUB_FIELD_NAME
198 #undef C2_STUB_TYPEFUNC
199 #undef C2_STUB_C_FUNC
200 #undef C2_STUB_NAME
201 #undef GEN_C2_STUB
202
203 #undef C2_JVMTI_STUB_C_FUNC
204 #undef GEN_C2_JVMTI_STUB
205 // #undef gen
206
207 const TypeFunc* OptoRuntime::_new_instance_Type = nullptr;
208 const TypeFunc* OptoRuntime::_new_array_Type = nullptr;
270 const TypeFunc* OptoRuntime::_updateBytesAdler32_Type = nullptr;
271 const TypeFunc* OptoRuntime::_osr_end_Type = nullptr;
272 const TypeFunc* OptoRuntime::_register_finalizer_Type = nullptr;
273 #if INCLUDE_JFR
274 const TypeFunc* OptoRuntime::_class_id_load_barrier_Type = nullptr;
275 #endif // INCLUDE_JFR
276 #if INCLUDE_JVMTI
277 const TypeFunc* OptoRuntime::_notify_jvmti_vthread_Type = nullptr;
278 #endif // INCLUDE_JVMTI
279 const TypeFunc* OptoRuntime::_dtrace_method_entry_exit_Type = nullptr;
280 const TypeFunc* OptoRuntime::_dtrace_object_alloc_Type = nullptr;
281
282 // Helper method to do generation of RunTimeStub's
283 address OptoRuntime::generate_stub(ciEnv* env,
284 TypeFunc_generator gen, address C_function,
285 const char *name, int is_fancy_jump,
286 bool pass_tls,
287 bool return_pc) {
288
289 // Matching the default directive, we currently have no method to match.
290 DirectiveSet* directive = DirectivesStack::getDefaultDirective(CompilerThread::current()->compiler());
291 CompilationMemoryStatisticMark cmsm(directive);
292 ResourceMark rm;
293 Compile C(env, gen, C_function, name, is_fancy_jump, pass_tls, return_pc, directive);
294 DirectivesStack::release(directive);
295 return C.stub_entry_point();
296 }
297
298 const char* OptoRuntime::stub_name(address entry) {
299 #ifndef PRODUCT
300 CodeBlob* cb = CodeCache::find_blob(entry);
301 RuntimeStub* rs =(RuntimeStub *)cb;
302 assert(rs != nullptr && rs->is_runtime_stub(), "not a runtime stub");
303 return rs->name();
304 #else
305 // Fast implementation for product mode (maybe it should be inlined too)
306 return "runtime stub";
307 #endif
308 }
309
310 // local methods passed as arguments to stub generator that forward
314 oopDesc* dest, jint dest_pos,
315 jint length, JavaThread* thread) {
316 SharedRuntime::slow_arraycopy_C(src, src_pos, dest, dest_pos, length, thread);
317 }
318
319 void OptoRuntime::complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* current) {
320 SharedRuntime::complete_monitor_locking_C(obj, lock, current);
321 }
322
323
324 //=============================================================================
325 // Opto compiler runtime routines
326 //=============================================================================
327
328
329 //=============================allocation======================================
330 // We failed the fast-path allocation. Now we need to do a scavenge or GC
331 // and try allocation again.
332
333 // object allocation
334 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_instance_C, OptoRuntime::new_instance_C(Klass* klass, JavaThread* current))
335 JRT_BLOCK;
336 #ifndef PRODUCT
337 SharedRuntime::_new_instance_ctr++; // new instance requires GC
338 #endif
339 assert(check_compiled_frame(current), "incorrect caller");
340
341 // These checks are cheap to make and support reflective allocation.
342 int lh = klass->layout_helper();
343 if (Klass::layout_helper_needs_slow_path(lh) || !InstanceKlass::cast(klass)->is_initialized()) {
344 Handle holder(current, klass->klass_holder()); // keep the klass alive
345 klass->check_valid_for_instantiation(false, THREAD);
346 if (!HAS_PENDING_EXCEPTION) {
347 InstanceKlass::cast(klass)->initialize(THREAD);
348 }
349 }
350
351 if (!HAS_PENDING_EXCEPTION) {
352 // Scavenge and allocate an instance.
353 Handle holder(current, klass->klass_holder()); // keep the klass alive
354 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
355 current->set_vm_result(result);
356
357 // Pass oops back through thread local storage. Our apparent type to Java
358 // is that we return an oop, but we can block on exit from this routine and
359 // a GC can trash the oop in C's return register. The generated stub will
360 // fetch the oop from TLS after any possible GC.
361 }
362
363 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
364 JRT_BLOCK_END;
365
366 // inform GC that we won't do card marks for initializing writes.
367 SharedRuntime::on_slowpath_allocation_exit(current);
368 JRT_END
369
370
371 // array allocation
372 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_array_C, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread* current))
373 JRT_BLOCK;
374 #ifndef PRODUCT
375 SharedRuntime::_new_array_ctr++; // new array requires GC
376 #endif
377 assert(check_compiled_frame(current), "incorrect caller");
378
379 // Scavenge and allocate an instance.
380 oop result;
381
382 if (array_type->is_typeArray_klass()) {
383 // The oopFactory likes to work with the element type.
384 // (We could bypass the oopFactory, since it doesn't add much value.)
385 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
386 result = oopFactory::new_typeArray(elem_type, len, THREAD);
387 } else {
388 // Although the oopFactory likes to work with the elem_type,
389 // the compiler prefers the array_type, since it must already have
390 // that latter value in hand for the fast path.
391 Handle holder(current, array_type->klass_holder()); // keep the array klass alive
392 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
393 result = oopFactory::new_objArray(elem_type, len, THREAD);
394 }
395
396 // Pass oops back through thread local storage. Our apparent type to Java
397 // is that we return an oop, but we can block on exit from this routine and
398 // a GC can trash the oop in C's return register. The generated stub will
399 // fetch the oop from TLS after any possible GC.
400 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
401 current->set_vm_result(result);
402 JRT_BLOCK_END;
403
404 // inform GC that we won't do card marks for initializing writes.
405 SharedRuntime::on_slowpath_allocation_exit(current);
406 JRT_END
407
408 // array allocation without zeroing
409 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_array_nozero_C, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread* current))
410 JRT_BLOCK;
411 #ifndef PRODUCT
412 SharedRuntime::_new_array_ctr++; // new array requires GC
413 #endif
414 assert(check_compiled_frame(current), "incorrect caller");
415
416 // Scavenge and allocate an instance.
417 oop result;
418
419 assert(array_type->is_typeArray_klass(), "should be called only for type array");
420 // The oopFactory likes to work with the element type.
421 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
422 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
423
424 // Pass oops back through thread local storage. Our apparent type to Java
425 // is that we return an oop, but we can block on exit from this routine and
426 // a GC can trash the oop in C's return register. The generated stub will
427 // fetch the oop from TLS after any possible GC.
428 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
429 current->set_vm_result(result);
441 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
442 size_t hs_bytes = arrayOopDesc::base_offset_in_bytes(elem_type);
443 assert(is_aligned(hs_bytes, BytesPerInt), "must be 4 byte aligned");
444 HeapWord* obj = cast_from_oop<HeapWord*>(result);
445 if (!is_aligned(hs_bytes, BytesPerLong)) {
446 *reinterpret_cast<jint*>(reinterpret_cast<char*>(obj) + hs_bytes) = 0;
447 hs_bytes += BytesPerInt;
448 }
449
450 // Optimized zeroing.
451 assert(is_aligned(hs_bytes, BytesPerLong), "must be 8-byte aligned");
452 const size_t aligned_hs = hs_bytes / BytesPerLong;
453 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
454 }
455
456 JRT_END
457
458 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
459
460 // multianewarray for 2 dimensions
461 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray2_C, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread* current))
462 #ifndef PRODUCT
463 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
464 #endif
465 assert(check_compiled_frame(current), "incorrect caller");
466 assert(elem_type->is_klass(), "not a class");
467 jint dims[2];
468 dims[0] = len1;
469 dims[1] = len2;
470 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
471 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
472 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
473 current->set_vm_result(obj);
474 JRT_END
475
476 // multianewarray for 3 dimensions
477 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray3_C, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread* current))
478 #ifndef PRODUCT
479 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
480 #endif
481 assert(check_compiled_frame(current), "incorrect caller");
482 assert(elem_type->is_klass(), "not a class");
483 jint dims[3];
484 dims[0] = len1;
485 dims[1] = len2;
486 dims[2] = len3;
487 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
488 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
489 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
490 current->set_vm_result(obj);
491 JRT_END
492
493 // multianewarray for 4 dimensions
494 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray4_C, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread* current))
495 #ifndef PRODUCT
496 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
497 #endif
498 assert(check_compiled_frame(current), "incorrect caller");
499 assert(elem_type->is_klass(), "not a class");
500 jint dims[4];
501 dims[0] = len1;
502 dims[1] = len2;
503 dims[2] = len3;
504 dims[3] = len4;
505 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
506 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
507 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
508 current->set_vm_result(obj);
509 JRT_END
510
511 // multianewarray for 5 dimensions
512 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread* current))
513 #ifndef PRODUCT
514 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
515 #endif
516 assert(check_compiled_frame(current), "incorrect caller");
517 assert(elem_type->is_klass(), "not a class");
518 jint dims[5];
519 dims[0] = len1;
520 dims[1] = len2;
521 dims[2] = len3;
522 dims[3] = len4;
523 dims[4] = len5;
524 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
525 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
526 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
527 current->set_vm_result(obj);
528 JRT_END
529
530 JRT_ENTRY_PROF(void, OptoRuntime, multianewarrayN_C, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread* current))
531 assert(check_compiled_frame(current), "incorrect caller");
532 assert(elem_type->is_klass(), "not a class");
533 assert(oop(dims)->is_typeArray(), "not an array");
534
535 ResourceMark rm;
536 jint len = dims->length();
537 assert(len > 0, "Dimensions array should contain data");
538 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
539 ArrayAccess<>::arraycopy_to_native<>(dims, typeArrayOopDesc::element_offset<jint>(0),
540 c_dims, len);
541
542 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
543 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
544 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
545 current->set_vm_result(obj);
546 JRT_END
547
548 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, monitor_notify_C, OptoRuntime::monitor_notify_C(oopDesc* obj, JavaThread* current))
549
550 // Very few notify/notifyAll operations find any threads on the waitset, so
551 // the dominant fast-path is to simply return.
552 // Relatedly, it's critical that notify/notifyAll be fast in order to
553 // reduce lock hold times.
554 if (!SafepointSynchronize::is_synchronizing()) {
555 if (ObjectSynchronizer::quick_notify(obj, current, false)) {
556 return;
557 }
558 }
559
560 // This is the case the fast-path above isn't provisioned to handle.
561 // The fast-path is designed to handle frequently arising cases in an efficient manner.
562 // (The fast-path is just a degenerate variant of the slow-path).
563 // Perform the dreaded state transition and pass control into the slow-path.
564 JRT_BLOCK;
565 Handle h_obj(current, obj);
566 ObjectSynchronizer::notify(h_obj, CHECK);
567 JRT_BLOCK_END;
568 JRT_END
569
570 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, monitor_notifyAll_C, OptoRuntime::monitor_notifyAll_C(oopDesc* obj, JavaThread* current))
571
572 if (!SafepointSynchronize::is_synchronizing() ) {
573 if (ObjectSynchronizer::quick_notify(obj, current, true)) {
574 return;
575 }
576 }
577
578 // This is the case the fast-path above isn't provisioned to handle.
579 // The fast-path is designed to handle frequently arising cases in an efficient manner.
580 // (The fast-path is just a degenerate variant of the slow-path).
581 // Perform the dreaded state transition and pass control into the slow-path.
582 JRT_BLOCK;
583 Handle h_obj(current, obj);
584 ObjectSynchronizer::notifyall(h_obj, CHECK);
585 JRT_BLOCK_END;
586 JRT_END
587
588 static const TypeFunc* make_new_instance_Type() {
589 // create input type (domain)
590 const Type **fields = TypeTuple::fields(1);
1658 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1659 switch (register_save_policy[reg]) {
1660 case 'C': return false; //SOC
1661 case 'E': return true ; //SOE
1662 case 'N': return false; //NS
1663 case 'A': return false; //AS
1664 }
1665 ShouldNotReachHere();
1666 return false;
1667 }
1668
1669 //-----------------------------------------------------------------------
1670 // Exceptions
1671 //
1672
1673 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg);
1674
1675 // The method is an entry that is always called by a C++ method not
1676 // directly from compiled code. Compiled code will call the C++ method following.
1677 // We can't allow async exception to be installed during exception processing.
1678 JRT_ENTRY_NO_ASYNC_PROF(address, OptoRuntime, handle_exception_C_helper, OptoRuntime::handle_exception_C_helper(JavaThread* current, nmethod* &nm))
1679 // The frame we rethrow the exception to might not have been processed by the GC yet.
1680 // The stack watermark barrier takes care of detecting that and ensuring the frame
1681 // has updated oops.
1682 StackWatermarkSet::after_unwind(current);
1683
1684 // Do not confuse exception_oop with pending_exception. The exception_oop
1685 // is only used to pass arguments into the method. Not for general
1686 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1687 // the runtime stubs checks this on exit.
1688 assert(current->exception_oop() != nullptr, "exception oop is found");
1689 address handler_address = nullptr;
1690
1691 Handle exception(current, current->exception_oop());
1692 address pc = current->exception_pc();
1693
1694 // Clear out the exception oop and pc since looking up an
1695 // exception handler can cause class loading, which might throw an
1696 // exception and those fields are expected to be clear during
1697 // normal bytecode execution.
1698 current->clear_exception_oop_and_pc();
1931 frame caller_frame = stub_frame.sender(®_map);
1932 return caller_frame.is_deoptimized_frame();
1933 }
1934
1935 static const TypeFunc* make_register_finalizer_Type() {
1936 // create input type (domain)
1937 const Type **fields = TypeTuple::fields(1);
1938 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1939 // // The JavaThread* is passed to each routine as the last argument
1940 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1941 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1942
1943 // create result type (range)
1944 fields = TypeTuple::fields(0);
1945
1946 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1947
1948 return TypeFunc::make(domain,range);
1949 }
1950
1951 const TypeFunc *OptoRuntime::class_init_barrier_Type() {
1952 // create input type (domain)
1953 const Type** fields = TypeTuple::fields(1);
1954 fields[TypeFunc::Parms+0] = TypeKlassPtr::NOTNULL;
1955 // // The JavaThread* is passed to each routine as the last argument
1956 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1957 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+1, fields);
1958
1959 // create result type (range)
1960 fields = TypeTuple::fields(0);
1961 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
1962 return TypeFunc::make(domain,range);
1963 }
1964
1965 #if INCLUDE_JFR
1966 static const TypeFunc* make_class_id_load_barrier_Type() {
1967 // create input type (domain)
1968 const Type **fields = TypeTuple::fields(1);
1969 fields[TypeFunc::Parms+0] = TypeInstPtr::KLASS;
1970 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms + 1, fields);
1971
1972 // create result type (range)
1973 fields = TypeTuple::fields(0);
1974
1975 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms + 0, fields);
1976
1977 return TypeFunc::make(domain,range);
1978 }
1979 #endif // INCLUDE_JFR
1980
1981 //-----------------------------------------------------------------------------
1982 // runtime upcall support
1983 const TypeFunc *OptoRuntime::runtime_up_call_Type() {
1984 // create input type (domain)
1985 const Type **fields = TypeTuple::fields(1);
1986 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1987 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1988
1989 // create result type (range)
1990 fields = TypeTuple::fields(0);
1991
1992 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1993
1994 return TypeFunc::make(domain,range);
1995 }
1996
1997 //-----------------------------------------------------------------------------
1998 static const TypeFunc* make_dtrace_method_entry_exit_Type() {
1999 // create input type (domain)
2000 const Type **fields = TypeTuple::fields(2);
2001 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
2002 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
2003 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
2004
2005 // create result type (range)
2006 fields = TypeTuple::fields(0);
2007
2008 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
2009
2010 return TypeFunc::make(domain,range);
2011 }
2012
2013 static const TypeFunc* make_dtrace_object_alloc_Type() {
2014 // create input type (domain)
2015 const Type **fields = TypeTuple::fields(2);
2016 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
2017 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
2018
2019 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
2020
2021 // create result type (range)
2022 fields = TypeTuple::fields(0);
2023
2024 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
2025
2026 return TypeFunc::make(domain,range);
2027 }
2028
2029 JRT_ENTRY_NO_ASYNC_PROF(void, OptoRuntime, register_finalizer_C, OptoRuntime::register_finalizer_C(oopDesc* obj, JavaThread* current))
2030 assert(oopDesc::is_oop(obj), "must be a valid oop");
2031 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
2032 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
2033 JRT_END
2034
2035 JRT_ENTRY_NO_ASYNC_PROF(void, OptoRuntime, class_init_barrier_C, OptoRuntime::class_init_barrier_C(Klass* k, JavaThread* current))
2036 InstanceKlass* ik = InstanceKlass::cast(k);
2037 if (ik->should_be_initialized()) {
2038 ik->initialize(CHECK);
2039 } else if (UsePerfData) {
2040 _perf_OptoRuntime_class_init_barrier_redundant_count->inc();
2041 }
2042 JRT_END
2043
2044 //-----------------------------------------------------------------------------
2045
2046 NamedCounter * volatile OptoRuntime::_named_counters = nullptr;
2047
2048 //
2049 // dump the collected NamedCounters.
2050 //
2051 void OptoRuntime::print_named_counters() {
2052 int total_lock_count = 0;
2053 int eliminated_lock_count = 0;
2054
2055 NamedCounter* c = _named_counters;
2056 while (c) {
2057 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
2058 int count = c->count();
2059 if (count > 0) {
2060 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
2061 if (Verbose) {
2062 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
2063 }
2201 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg) {
2202 trace_exception_counter++;
2203 stringStream tempst;
2204
2205 tempst.print("%d [Exception (%s): ", trace_exception_counter, msg);
2206 exception_oop->print_value_on(&tempst);
2207 tempst.print(" in ");
2208 CodeBlob* blob = CodeCache::find_blob(exception_pc);
2209 if (blob->is_nmethod()) {
2210 blob->as_nmethod()->method()->print_value_on(&tempst);
2211 } else if (blob->is_runtime_stub()) {
2212 tempst.print("<runtime-stub>");
2213 } else {
2214 tempst.print("<unknown>");
2215 }
2216 tempst.print(" at " INTPTR_FORMAT, p2i(exception_pc));
2217 tempst.print("]");
2218
2219 st->print_raw_cr(tempst.freeze());
2220 }
2221
2222 #define DO_COUNTERS2(macro2, macro1) \
2223 macro2(OptoRuntime, new_instance_C) \
2224 macro2(OptoRuntime, new_array_C) \
2225 macro2(OptoRuntime, new_array_nozero_C) \
2226 macro2(OptoRuntime, multianewarray2_C) \
2227 macro2(OptoRuntime, multianewarray3_C) \
2228 macro2(OptoRuntime, multianewarray4_C) \
2229 macro2(OptoRuntime, multianewarrayN_C) \
2230 macro2(OptoRuntime, monitor_notify_C) \
2231 macro2(OptoRuntime, monitor_notifyAll_C) \
2232 macro2(OptoRuntime, handle_exception_C_helper) \
2233 macro2(OptoRuntime, register_finalizer_C) \
2234 macro2(OptoRuntime, class_init_barrier_C) \
2235 macro1(OptoRuntime, class_init_barrier_redundant)
2236
2237 #define INIT_COUNTER_TIME_AND_CNT(sub, name) \
2238 NEWPERFTICKCOUNTERS(_perf_##sub##_##name##_timer, SUN_CI, #sub "::" #name); \
2239 NEWPERFEVENTCOUNTER(_perf_##sub##_##name##_count, SUN_CI, #sub "::" #name "_count");
2240
2241 #define INIT_COUNTER_CNT(sub, name) \
2242 NEWPERFEVENTCOUNTER(_perf_##sub##_##name##_count, SUN_CI, #sub "::" #name "_count");
2243
2244 void OptoRuntime::init_counters() {
2245 assert(CompilerConfig::is_c2_enabled(), "");
2246
2247 if (UsePerfData) {
2248 EXCEPTION_MARK;
2249
2250 DO_COUNTERS2(INIT_COUNTER_TIME_AND_CNT, INIT_COUNTER_CNT)
2251
2252 if (HAS_PENDING_EXCEPTION) {
2253 vm_exit_during_initialization("jvm_perf_init failed unexpectedly");
2254 }
2255 }
2256 }
2257 #undef INIT_COUNTER_TIME_AND_CNT
2258 #undef INIT_COUNTER_CNT
2259
2260 #define PRINT_COUNTER_TIME_AND_CNT(sub, name) { \
2261 jlong count = _perf_##sub##_##name##_count->get_value(); \
2262 if (count > 0) { \
2263 st->print_cr(" %-50s = " JLONG_FORMAT_W(6) "us (elapsed) " JLONG_FORMAT_W(6) "us (thread) (" JLONG_FORMAT_W(5) " events)", #sub "::" #name, \
2264 _perf_##sub##_##name##_timer->elapsed_counter_value_us(), \
2265 _perf_##sub##_##name##_timer->thread_counter_value_us(), \
2266 count); \
2267 }}
2268
2269 #define PRINT_COUNTER_CNT(sub, name) { \
2270 jlong count = _perf_##sub##_##name##_count->get_value(); \
2271 if (count > 0) { \
2272 st->print_cr(" %-30s = " JLONG_FORMAT_W(5) " events", #name, count); \
2273 }}
2274
2275 void OptoRuntime::print_counters_on(outputStream* st) {
2276 if (UsePerfData && ProfileRuntimeCalls && CompilerConfig::is_c2_enabled()) {
2277 DO_COUNTERS2(PRINT_COUNTER_TIME_AND_CNT, PRINT_COUNTER_CNT)
2278 } else {
2279 st->print_cr(" OptoRuntime: no info (%s is disabled)",
2280 (!CompilerConfig::is_c2_enabled() ? "C2" : (UsePerfData ? "ProfileRuntimeCalls" : "UsePerfData")));
2281 }
2282 }
2283
2284 #undef PRINT_COUNTER_TIME_AND_CNT
2285 #undef PRINT_COUNTER_CNT
2286 #undef DO_COUNTERS2
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