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 "precompiled.hpp"
26 #include "classfile/vmClasses.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/codeCache.hpp"
29 #include "code/compiledIC.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.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
92
93 // Compiled code entry points
94 address OptoRuntime::_new_instance_Java = nullptr;
95 address OptoRuntime::_new_array_Java = nullptr;
96 address OptoRuntime::_new_array_nozero_Java = nullptr;
97 address OptoRuntime::_multianewarray2_Java = nullptr;
98 address OptoRuntime::_multianewarray3_Java = nullptr;
99 address OptoRuntime::_multianewarray4_Java = nullptr;
100 address OptoRuntime::_multianewarray5_Java = nullptr;
101 address OptoRuntime::_multianewarrayN_Java = nullptr;
102 address OptoRuntime::_vtable_must_compile_Java = nullptr;
103 address OptoRuntime::_complete_monitor_locking_Java = nullptr;
104 address OptoRuntime::_monitor_notify_Java = nullptr;
105 address OptoRuntime::_monitor_notifyAll_Java = nullptr;
106 address OptoRuntime::_rethrow_Java = nullptr;
107
108 address OptoRuntime::_slow_arraycopy_Java = nullptr;
109 address OptoRuntime::_register_finalizer_Java = nullptr;
110 #if INCLUDE_JVMTI
111 address OptoRuntime::_notify_jvmti_vthread_start = nullptr;
112 address OptoRuntime::_notify_jvmti_vthread_end = nullptr;
113 address OptoRuntime::_notify_jvmti_vthread_mount = nullptr;
114 address OptoRuntime::_notify_jvmti_vthread_unmount = nullptr;
115 #endif
116
117 ExceptionBlob* OptoRuntime::_exception_blob;
118
119 // This should be called in an assertion at the start of OptoRuntime routines
120 // which are entered from compiled code (all of them)
121 #ifdef ASSERT
122 static bool check_compiled_frame(JavaThread* thread) {
123 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
124 RegisterMap map(thread,
125 RegisterMap::UpdateMap::skip,
126 RegisterMap::ProcessFrames::include,
127 RegisterMap::WalkContinuation::skip);
128 frame caller = thread->last_frame().sender(&map);
129 assert(caller.is_compiled_frame(), "not being called from compiled like code");
130 return true;
131 }
132 #endif // ASSERT
133
134
135 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, return_pc) \
136 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, return_pc); \
137 if (var == nullptr) { return false; }
138
139 bool OptoRuntime::generate(ciEnv* env) {
140
141 generate_exception_blob();
142
143 // Note: tls: Means fetching the return oop out of the thread-local storage
144 //
145 // variable/name type-function-gen , runtime method ,fncy_jp, tls,retpc
146 // -------------------------------------------------------------------------------------------------------------------------------
147 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true, false);
148 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true, false);
149 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true, false);
150 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true, false);
151 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true, false);
152 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true, false);
153 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true, false);
154 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true, false);
155 #if INCLUDE_JVMTI
156 gen(env, _notify_jvmti_vthread_start , notify_jvmti_vthread_Type , SharedRuntime::notify_jvmti_vthread_start, 0, true, false);
157 gen(env, _notify_jvmti_vthread_end , notify_jvmti_vthread_Type , SharedRuntime::notify_jvmti_vthread_end, 0, true, false);
158 gen(env, _notify_jvmti_vthread_mount , notify_jvmti_vthread_Type , SharedRuntime::notify_jvmti_vthread_mount, 0, true, false);
159 gen(env, _notify_jvmti_vthread_unmount , notify_jvmti_vthread_Type , SharedRuntime::notify_jvmti_vthread_unmount, 0, true, false);
160 #endif
161 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false);
162 gen(env, _monitor_notify_Java , monitor_notify_Type , monitor_notify_C , 0 , false, false);
163 gen(env, _monitor_notifyAll_Java , monitor_notify_Type , monitor_notifyAll_C , 0 , false, false);
164 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , true );
165
166 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false);
167 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false);
168
169 return true;
170 }
171
172 #undef gen
173
174
175 // Helper method to do generation of RunTimeStub's
176 address OptoRuntime::generate_stub(ciEnv* env,
177 TypeFunc_generator gen, address C_function,
178 const char *name, int is_fancy_jump,
179 bool pass_tls,
180 bool return_pc) {
181
182 // Matching the default directive, we currently have no method to match.
183 DirectiveSet* directive = DirectivesStack::getDefaultDirective(CompileBroker::compiler(CompLevel_full_optimization));
184 ResourceMark rm;
185 Compile C(env, gen, C_function, name, is_fancy_jump, pass_tls, return_pc, directive);
186 DirectivesStack::release(directive);
187 return C.stub_entry_point();
188 }
189
190 const char* OptoRuntime::stub_name(address entry) {
191 #ifndef PRODUCT
192 CodeBlob* cb = CodeCache::find_blob(entry);
193 RuntimeStub* rs =(RuntimeStub *)cb;
194 assert(rs != nullptr && rs->is_runtime_stub(), "not a runtime stub");
195 return rs->name();
196 #else
197 // Fast implementation for product mode (maybe it should be inlined too)
198 return "runtime stub";
199 #endif
200 }
201
202
203 //=============================================================================
204 // Opto compiler runtime routines
205 //=============================================================================
206
207
208 //=============================allocation======================================
209 // We failed the fast-path allocation. Now we need to do a scavenge or GC
210 // and try allocation again.
211
212 // object allocation
213 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* current))
214 JRT_BLOCK;
215 #ifndef PRODUCT
216 SharedRuntime::_new_instance_ctr++; // new instance requires GC
217 #endif
218 assert(check_compiled_frame(current), "incorrect caller");
219
220 // These checks are cheap to make and support reflective allocation.
221 int lh = klass->layout_helper();
222 if (Klass::layout_helper_needs_slow_path(lh) || !InstanceKlass::cast(klass)->is_initialized()) {
223 Handle holder(current, klass->klass_holder()); // keep the klass alive
224 klass->check_valid_for_instantiation(false, THREAD);
225 if (!HAS_PENDING_EXCEPTION) {
226 InstanceKlass::cast(klass)->initialize(THREAD);
227 }
228 }
229
230 if (!HAS_PENDING_EXCEPTION) {
231 // Scavenge and allocate an instance.
232 Handle holder(current, klass->klass_holder()); // keep the klass alive
233 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
234 current->set_vm_result(result);
235
236 // Pass oops back through thread local storage. Our apparent type to Java
237 // is that we return an oop, but we can block on exit from this routine and
238 // a GC can trash the oop in C's return register. The generated stub will
239 // fetch the oop from TLS after any possible GC.
240 }
241
242 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
243 JRT_BLOCK_END;
244
245 // inform GC that we won't do card marks for initializing writes.
246 SharedRuntime::on_slowpath_allocation_exit(current);
247 JRT_END
248
249
250 // array allocation
251 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread* current))
252 JRT_BLOCK;
253 #ifndef PRODUCT
254 SharedRuntime::_new_array_ctr++; // new array requires GC
255 #endif
256 assert(check_compiled_frame(current), "incorrect caller");
257
258 // Scavenge and allocate an instance.
259 oop result;
260
261 if (array_type->is_typeArray_klass()) {
262 // The oopFactory likes to work with the element type.
263 // (We could bypass the oopFactory, since it doesn't add much value.)
264 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
265 result = oopFactory::new_typeArray(elem_type, len, THREAD);
266 } else {
267 // Although the oopFactory likes to work with the elem_type,
268 // the compiler prefers the array_type, since it must already have
269 // that latter value in hand for the fast path.
270 Handle holder(current, array_type->klass_holder()); // keep the array klass alive
271 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
272 result = oopFactory::new_objArray(elem_type, len, THREAD);
273 }
274
275 // Pass oops back through thread local storage. Our apparent type to Java
276 // is that we return an oop, but we can block on exit from this routine and
277 // a GC can trash the oop in C's return register. The generated stub will
278 // fetch the oop from TLS after any possible GC.
279 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
280 current->set_vm_result(result);
281 JRT_BLOCK_END;
282
283 // inform GC that we won't do card marks for initializing writes.
284 SharedRuntime::on_slowpath_allocation_exit(current);
285 JRT_END
286
287 // array allocation without zeroing
288 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread* current))
289 JRT_BLOCK;
290 #ifndef PRODUCT
291 SharedRuntime::_new_array_ctr++; // new array requires GC
292 #endif
293 assert(check_compiled_frame(current), "incorrect caller");
294
295 // Scavenge and allocate an instance.
296 oop result;
297
298 assert(array_type->is_typeArray_klass(), "should be called only for type array");
299 // The oopFactory likes to work with the element type.
300 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
301 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
302
303 // Pass oops back through thread local storage. Our apparent type to Java
304 // is that we return an oop, but we can block on exit from this routine and
305 // a GC can trash the oop in C's return register. The generated stub will
306 // fetch the oop from TLS after any possible GC.
307 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
308 current->set_vm_result(result);
320 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
321 size_t hs_bytes = arrayOopDesc::base_offset_in_bytes(elem_type);
322 assert(is_aligned(hs_bytes, BytesPerInt), "must be 4 byte aligned");
323 HeapWord* obj = cast_from_oop<HeapWord*>(result);
324 if (!is_aligned(hs_bytes, BytesPerLong)) {
325 *reinterpret_cast<jint*>(reinterpret_cast<char*>(obj) + hs_bytes) = 0;
326 hs_bytes += BytesPerInt;
327 }
328
329 // Optimized zeroing.
330 assert(is_aligned(hs_bytes, BytesPerLong), "must be 8-byte aligned");
331 const size_t aligned_hs = hs_bytes / BytesPerLong;
332 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
333 }
334
335 JRT_END
336
337 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
338
339 // multianewarray for 2 dimensions
340 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread* current))
341 #ifndef PRODUCT
342 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
343 #endif
344 assert(check_compiled_frame(current), "incorrect caller");
345 assert(elem_type->is_klass(), "not a class");
346 jint dims[2];
347 dims[0] = len1;
348 dims[1] = len2;
349 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
350 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
351 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
352 current->set_vm_result(obj);
353 JRT_END
354
355 // multianewarray for 3 dimensions
356 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread* current))
357 #ifndef PRODUCT
358 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
359 #endif
360 assert(check_compiled_frame(current), "incorrect caller");
361 assert(elem_type->is_klass(), "not a class");
362 jint dims[3];
363 dims[0] = len1;
364 dims[1] = len2;
365 dims[2] = len3;
366 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
367 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
368 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
369 current->set_vm_result(obj);
370 JRT_END
371
372 // multianewarray for 4 dimensions
373 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread* current))
374 #ifndef PRODUCT
375 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
376 #endif
377 assert(check_compiled_frame(current), "incorrect caller");
378 assert(elem_type->is_klass(), "not a class");
379 jint dims[4];
380 dims[0] = len1;
381 dims[1] = len2;
382 dims[2] = len3;
383 dims[3] = len4;
384 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
385 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
386 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
387 current->set_vm_result(obj);
388 JRT_END
389
390 // multianewarray for 5 dimensions
391 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread* current))
392 #ifndef PRODUCT
393 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
394 #endif
395 assert(check_compiled_frame(current), "incorrect caller");
396 assert(elem_type->is_klass(), "not a class");
397 jint dims[5];
398 dims[0] = len1;
399 dims[1] = len2;
400 dims[2] = len3;
401 dims[3] = len4;
402 dims[4] = len5;
403 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
404 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
405 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
406 current->set_vm_result(obj);
407 JRT_END
408
409 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread* current))
410 assert(check_compiled_frame(current), "incorrect caller");
411 assert(elem_type->is_klass(), "not a class");
412 assert(oop(dims)->is_typeArray(), "not an array");
413
414 ResourceMark rm;
415 jint len = dims->length();
416 assert(len > 0, "Dimensions array should contain data");
417 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
418 ArrayAccess<>::arraycopy_to_native<>(dims, typeArrayOopDesc::element_offset<jint>(0),
419 c_dims, len);
420
421 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
422 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
423 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
424 current->set_vm_result(obj);
425 JRT_END
426
427 JRT_BLOCK_ENTRY(void, OptoRuntime::monitor_notify_C(oopDesc* obj, JavaThread* current))
428
429 // Very few notify/notifyAll operations find any threads on the waitset, so
430 // the dominant fast-path is to simply return.
431 // Relatedly, it's critical that notify/notifyAll be fast in order to
432 // reduce lock hold times.
433 if (!SafepointSynchronize::is_synchronizing()) {
434 if (ObjectSynchronizer::quick_notify(obj, current, false)) {
435 return;
436 }
437 }
438
439 // This is the case the fast-path above isn't provisioned to handle.
440 // The fast-path is designed to handle frequently arising cases in an efficient manner.
441 // (The fast-path is just a degenerate variant of the slow-path).
442 // Perform the dreaded state transition and pass control into the slow-path.
443 JRT_BLOCK;
444 Handle h_obj(current, obj);
445 ObjectSynchronizer::notify(h_obj, CHECK);
446 JRT_BLOCK_END;
447 JRT_END
448
449 JRT_BLOCK_ENTRY(void, OptoRuntime::monitor_notifyAll_C(oopDesc* obj, JavaThread* current))
450
451 if (!SafepointSynchronize::is_synchronizing() ) {
452 if (ObjectSynchronizer::quick_notify(obj, current, true)) {
453 return;
454 }
455 }
456
457 // This is the case the fast-path above isn't provisioned to handle.
458 // The fast-path is designed to handle frequently arising cases in an efficient manner.
459 // (The fast-path is just a degenerate variant of the slow-path).
460 // Perform the dreaded state transition and pass control into the slow-path.
461 JRT_BLOCK;
462 Handle h_obj(current, obj);
463 ObjectSynchronizer::notifyall(h_obj, CHECK);
464 JRT_BLOCK_END;
465 JRT_END
466
467 const TypeFunc *OptoRuntime::new_instance_Type() {
468 // create input type (domain)
469 const Type **fields = TypeTuple::fields(1);
1482 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1483 switch (register_save_policy[reg]) {
1484 case 'C': return false; //SOC
1485 case 'E': return true ; //SOE
1486 case 'N': return false; //NS
1487 case 'A': return false; //AS
1488 }
1489 ShouldNotReachHere();
1490 return false;
1491 }
1492
1493 //-----------------------------------------------------------------------
1494 // Exceptions
1495 //
1496
1497 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg);
1498
1499 // The method is an entry that is always called by a C++ method not
1500 // directly from compiled code. Compiled code will call the C++ method following.
1501 // We can't allow async exception to be installed during exception processing.
1502 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* current, nmethod* &nm))
1503 // The frame we rethrow the exception to might not have been processed by the GC yet.
1504 // The stack watermark barrier takes care of detecting that and ensuring the frame
1505 // has updated oops.
1506 StackWatermarkSet::after_unwind(current);
1507
1508 // Do not confuse exception_oop with pending_exception. The exception_oop
1509 // is only used to pass arguments into the method. Not for general
1510 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1511 // the runtime stubs checks this on exit.
1512 assert(current->exception_oop() != nullptr, "exception oop is found");
1513 address handler_address = nullptr;
1514
1515 Handle exception(current, current->exception_oop());
1516 address pc = current->exception_pc();
1517
1518 // Clear out the exception oop and pc since looking up an
1519 // exception handler can cause class loading, which might throw an
1520 // exception and those fields are expected to be clear during
1521 // normal bytecode execution.
1522 current->clear_exception_oop_and_pc();
1758 return caller_frame.is_deoptimized_frame();
1759 }
1760
1761
1762 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1763 // create input type (domain)
1764 const Type **fields = TypeTuple::fields(1);
1765 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1766 // // The JavaThread* is passed to each routine as the last argument
1767 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1768 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1769
1770 // create result type (range)
1771 fields = TypeTuple::fields(0);
1772
1773 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1774
1775 return TypeFunc::make(domain,range);
1776 }
1777
1778 #if INCLUDE_JFR
1779 const TypeFunc *OptoRuntime::class_id_load_barrier_Type() {
1780 // create input type (domain)
1781 const Type **fields = TypeTuple::fields(1);
1782 fields[TypeFunc::Parms+0] = TypeInstPtr::KLASS;
1783 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms + 1, fields);
1784
1785 // create result type (range)
1786 fields = TypeTuple::fields(0);
1787
1788 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms + 0, fields);
1789
1790 return TypeFunc::make(domain,range);
1791 }
1792 #endif
1793
1794 //-----------------------------------------------------------------------------
1795 // Dtrace support. entry and exit probes have the same signature
1796 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1797 // create input type (domain)
1808 return TypeFunc::make(domain,range);
1809 }
1810
1811 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1812 // create input type (domain)
1813 const Type **fields = TypeTuple::fields(2);
1814 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1815 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1816
1817 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1818
1819 // create result type (range)
1820 fields = TypeTuple::fields(0);
1821
1822 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1823
1824 return TypeFunc::make(domain,range);
1825 }
1826
1827
1828 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* current))
1829 assert(oopDesc::is_oop(obj), "must be a valid oop");
1830 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1831 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1832 JRT_END
1833
1834 //-----------------------------------------------------------------------------
1835
1836 NamedCounter * volatile OptoRuntime::_named_counters = nullptr;
1837
1838 //
1839 // dump the collected NamedCounters.
1840 //
1841 void OptoRuntime::print_named_counters() {
1842 int total_lock_count = 0;
1843 int eliminated_lock_count = 0;
1844
1845 NamedCounter* c = _named_counters;
1846 while (c) {
1847 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1848 int count = c->count();
1849 if (count > 0) {
1850 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1851 if (Verbose) {
1852 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1853 }
1914 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg) {
1915 trace_exception_counter++;
1916 stringStream tempst;
1917
1918 tempst.print("%d [Exception (%s): ", trace_exception_counter, msg);
1919 exception_oop->print_value_on(&tempst);
1920 tempst.print(" in ");
1921 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1922 if (blob->is_nmethod()) {
1923 blob->as_nmethod()->method()->print_value_on(&tempst);
1924 } else if (blob->is_runtime_stub()) {
1925 tempst.print("<runtime-stub>");
1926 } else {
1927 tempst.print("<unknown>");
1928 }
1929 tempst.print(" at " INTPTR_FORMAT, p2i(exception_pc));
1930 tempst.print("]");
1931
1932 st->print_raw_cr(tempst.freeze());
1933 }
|
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 "precompiled.hpp"
26 #include "classfile/vmClasses.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/codeCache.hpp"
29 #include "code/compiledIC.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.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
96
97 // Compiled code entry points
98 address OptoRuntime::_new_instance_Java = nullptr;
99 address OptoRuntime::_new_array_Java = nullptr;
100 address OptoRuntime::_new_array_nozero_Java = nullptr;
101 address OptoRuntime::_multianewarray2_Java = nullptr;
102 address OptoRuntime::_multianewarray3_Java = nullptr;
103 address OptoRuntime::_multianewarray4_Java = nullptr;
104 address OptoRuntime::_multianewarray5_Java = nullptr;
105 address OptoRuntime::_multianewarrayN_Java = nullptr;
106 address OptoRuntime::_vtable_must_compile_Java = nullptr;
107 address OptoRuntime::_complete_monitor_locking_Java = nullptr;
108 address OptoRuntime::_monitor_notify_Java = nullptr;
109 address OptoRuntime::_monitor_notifyAll_Java = nullptr;
110 address OptoRuntime::_rethrow_Java = nullptr;
111
112 address OptoRuntime::_slow_arraycopy_Java = nullptr;
113 address OptoRuntime::_register_finalizer_Java = nullptr;
114 address OptoRuntime::_class_init_barrier_Java = nullptr;
115 #if INCLUDE_JVMTI
116 address OptoRuntime::_notify_jvmti_vthread_start = nullptr;
117 address OptoRuntime::_notify_jvmti_vthread_end = nullptr;
118 address OptoRuntime::_notify_jvmti_vthread_mount = nullptr;
119 address OptoRuntime::_notify_jvmti_vthread_unmount = nullptr;
120 #endif
121
122 ExceptionBlob* OptoRuntime::_exception_blob;
123
124 PerfCounter* _perf_OptoRuntime_class_init_barrier_redundant_count = nullptr;
125
126 // This should be called in an assertion at the start of OptoRuntime routines
127 // which are entered from compiled code (all of them)
128 #ifdef ASSERT
129 static bool check_compiled_frame(JavaThread* thread) {
130 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
131 RegisterMap map(thread,
132 RegisterMap::UpdateMap::skip,
133 RegisterMap::ProcessFrames::include,
134 RegisterMap::WalkContinuation::skip);
135 frame caller = thread->last_frame().sender(&map);
136 assert(caller.is_compiled_frame(), "not being called from compiled like code");
137 return true;
138 }
139 #endif // ASSERT
140
141
142 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, return_pc) \
143 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, return_pc); \
144 if (var == nullptr) { return false; }
145
146 bool OptoRuntime::generate(ciEnv* env) {
147 init_counters();
148
149 generate_exception_blob();
150
151 // Note: tls: Means fetching the return oop out of the thread-local storage
152 //
153 // variable/name type-function-gen , runtime method ,fncy_jp, tls,retpc
154 // -------------------------------------------------------------------------------------------------------------------------------
155 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true, false);
156 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true, false);
157 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true, false);
158 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true, false);
159 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true, false);
160 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true, false);
161 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true, false);
162 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true, false);
163 #if INCLUDE_JVMTI
164 gen(env, _notify_jvmti_vthread_start , notify_jvmti_vthread_Type , SharedRuntime::notify_jvmti_vthread_start, 0, true, false);
165 gen(env, _notify_jvmti_vthread_end , notify_jvmti_vthread_Type , SharedRuntime::notify_jvmti_vthread_end, 0, true, false);
166 gen(env, _notify_jvmti_vthread_mount , notify_jvmti_vthread_Type , SharedRuntime::notify_jvmti_vthread_mount, 0, true, false);
167 gen(env, _notify_jvmti_vthread_unmount , notify_jvmti_vthread_Type , SharedRuntime::notify_jvmti_vthread_unmount, 0, true, false);
168 #endif
169 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false);
170 gen(env, _monitor_notify_Java , monitor_notify_Type , monitor_notify_C , 0 , false, false);
171 gen(env, _monitor_notifyAll_Java , monitor_notify_Type , monitor_notifyAll_C , 0 , false, false);
172 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , true );
173
174 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false);
175 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false);
176 gen(env, _class_init_barrier_Java , class_init_barrier_Type , class_init_barrier , 0 , false, false);
177
178 return true;
179 }
180
181 #undef gen
182
183
184 // Helper method to do generation of RunTimeStub's
185 address OptoRuntime::generate_stub(ciEnv* env,
186 TypeFunc_generator gen, address C_function,
187 const char *name, int is_fancy_jump,
188 bool pass_tls,
189 bool return_pc) {
190
191 // Matching the default directive, we currently have no method to match.
192 DirectiveSet* directive = DirectivesStack::getDefaultDirective(CompilerThread::current()->compiler());
193 ResourceMark rm;
194 Compile C(env, gen, C_function, name, is_fancy_jump, pass_tls, return_pc, directive);
195 DirectivesStack::release(directive);
196 return C.stub_entry_point();
197 }
198
199 const char* OptoRuntime::stub_name(address entry) {
200 #ifndef PRODUCT
201 CodeBlob* cb = CodeCache::find_blob(entry);
202 RuntimeStub* rs =(RuntimeStub *)cb;
203 assert(rs != nullptr && rs->is_runtime_stub(), "not a runtime stub");
204 return rs->name();
205 #else
206 // Fast implementation for product mode (maybe it should be inlined too)
207 return "runtime stub";
208 #endif
209 }
210
211
212 //=============================================================================
213 // Opto compiler runtime routines
214 //=============================================================================
215
216
217 //=============================allocation======================================
218 // We failed the fast-path allocation. Now we need to do a scavenge or GC
219 // and try allocation again.
220
221 // object allocation
222 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_instance_C, OptoRuntime::new_instance_C(Klass* klass, JavaThread* current))
223 JRT_BLOCK;
224 #ifndef PRODUCT
225 SharedRuntime::_new_instance_ctr++; // new instance requires GC
226 #endif
227 assert(check_compiled_frame(current), "incorrect caller");
228
229 // These checks are cheap to make and support reflective allocation.
230 int lh = klass->layout_helper();
231 if (Klass::layout_helper_needs_slow_path(lh) || !InstanceKlass::cast(klass)->is_initialized()) {
232 Handle holder(current, klass->klass_holder()); // keep the klass alive
233 klass->check_valid_for_instantiation(false, THREAD);
234 if (!HAS_PENDING_EXCEPTION) {
235 InstanceKlass::cast(klass)->initialize(THREAD);
236 }
237 }
238
239 if (!HAS_PENDING_EXCEPTION) {
240 // Scavenge and allocate an instance.
241 Handle holder(current, klass->klass_holder()); // keep the klass alive
242 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
243 current->set_vm_result(result);
244
245 // Pass oops back through thread local storage. Our apparent type to Java
246 // is that we return an oop, but we can block on exit from this routine and
247 // a GC can trash the oop in C's return register. The generated stub will
248 // fetch the oop from TLS after any possible GC.
249 }
250
251 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
252 JRT_BLOCK_END;
253
254 // inform GC that we won't do card marks for initializing writes.
255 SharedRuntime::on_slowpath_allocation_exit(current);
256 JRT_END
257
258
259 // array allocation
260 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_array_C, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread* current))
261 JRT_BLOCK;
262 #ifndef PRODUCT
263 SharedRuntime::_new_array_ctr++; // new array requires GC
264 #endif
265 assert(check_compiled_frame(current), "incorrect caller");
266
267 // Scavenge and allocate an instance.
268 oop result;
269
270 if (array_type->is_typeArray_klass()) {
271 // The oopFactory likes to work with the element type.
272 // (We could bypass the oopFactory, since it doesn't add much value.)
273 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
274 result = oopFactory::new_typeArray(elem_type, len, THREAD);
275 } else {
276 // Although the oopFactory likes to work with the elem_type,
277 // the compiler prefers the array_type, since it must already have
278 // that latter value in hand for the fast path.
279 Handle holder(current, array_type->klass_holder()); // keep the array klass alive
280 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
281 result = oopFactory::new_objArray(elem_type, len, THREAD);
282 }
283
284 // Pass oops back through thread local storage. Our apparent type to Java
285 // is that we return an oop, but we can block on exit from this routine and
286 // a GC can trash the oop in C's return register. The generated stub will
287 // fetch the oop from TLS after any possible GC.
288 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
289 current->set_vm_result(result);
290 JRT_BLOCK_END;
291
292 // inform GC that we won't do card marks for initializing writes.
293 SharedRuntime::on_slowpath_allocation_exit(current);
294 JRT_END
295
296 // array allocation without zeroing
297 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, new_array_nozero_C, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread* current))
298 JRT_BLOCK;
299 #ifndef PRODUCT
300 SharedRuntime::_new_array_ctr++; // new array requires GC
301 #endif
302 assert(check_compiled_frame(current), "incorrect caller");
303
304 // Scavenge and allocate an instance.
305 oop result;
306
307 assert(array_type->is_typeArray_klass(), "should be called only for type array");
308 // The oopFactory likes to work with the element type.
309 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
310 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
311
312 // Pass oops back through thread local storage. Our apparent type to Java
313 // is that we return an oop, but we can block on exit from this routine and
314 // a GC can trash the oop in C's return register. The generated stub will
315 // fetch the oop from TLS after any possible GC.
316 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
317 current->set_vm_result(result);
329 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
330 size_t hs_bytes = arrayOopDesc::base_offset_in_bytes(elem_type);
331 assert(is_aligned(hs_bytes, BytesPerInt), "must be 4 byte aligned");
332 HeapWord* obj = cast_from_oop<HeapWord*>(result);
333 if (!is_aligned(hs_bytes, BytesPerLong)) {
334 *reinterpret_cast<jint*>(reinterpret_cast<char*>(obj) + hs_bytes) = 0;
335 hs_bytes += BytesPerInt;
336 }
337
338 // Optimized zeroing.
339 assert(is_aligned(hs_bytes, BytesPerLong), "must be 8-byte aligned");
340 const size_t aligned_hs = hs_bytes / BytesPerLong;
341 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
342 }
343
344 JRT_END
345
346 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
347
348 // multianewarray for 2 dimensions
349 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray2_C, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread* current))
350 #ifndef PRODUCT
351 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
352 #endif
353 assert(check_compiled_frame(current), "incorrect caller");
354 assert(elem_type->is_klass(), "not a class");
355 jint dims[2];
356 dims[0] = len1;
357 dims[1] = len2;
358 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
359 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
360 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
361 current->set_vm_result(obj);
362 JRT_END
363
364 // multianewarray for 3 dimensions
365 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray3_C, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread* current))
366 #ifndef PRODUCT
367 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
368 #endif
369 assert(check_compiled_frame(current), "incorrect caller");
370 assert(elem_type->is_klass(), "not a class");
371 jint dims[3];
372 dims[0] = len1;
373 dims[1] = len2;
374 dims[2] = len3;
375 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
376 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
377 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
378 current->set_vm_result(obj);
379 JRT_END
380
381 // multianewarray for 4 dimensions
382 JRT_ENTRY_PROF(void, OptoRuntime, multianewarray4_C, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread* current))
383 #ifndef PRODUCT
384 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
385 #endif
386 assert(check_compiled_frame(current), "incorrect caller");
387 assert(elem_type->is_klass(), "not a class");
388 jint dims[4];
389 dims[0] = len1;
390 dims[1] = len2;
391 dims[2] = len3;
392 dims[3] = len4;
393 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
394 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
395 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
396 current->set_vm_result(obj);
397 JRT_END
398
399 // multianewarray for 5 dimensions
400 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread* current))
401 #ifndef PRODUCT
402 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
403 #endif
404 assert(check_compiled_frame(current), "incorrect caller");
405 assert(elem_type->is_klass(), "not a class");
406 jint dims[5];
407 dims[0] = len1;
408 dims[1] = len2;
409 dims[2] = len3;
410 dims[3] = len4;
411 dims[4] = len5;
412 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
413 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
414 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
415 current->set_vm_result(obj);
416 JRT_END
417
418 JRT_ENTRY_PROF(void, OptoRuntime, multianewarrayN_C, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread* current))
419 assert(check_compiled_frame(current), "incorrect caller");
420 assert(elem_type->is_klass(), "not a class");
421 assert(oop(dims)->is_typeArray(), "not an array");
422
423 ResourceMark rm;
424 jint len = dims->length();
425 assert(len > 0, "Dimensions array should contain data");
426 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
427 ArrayAccess<>::arraycopy_to_native<>(dims, typeArrayOopDesc::element_offset<jint>(0),
428 c_dims, len);
429
430 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
431 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
432 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
433 current->set_vm_result(obj);
434 JRT_END
435
436 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, monitor_notify_C, OptoRuntime::monitor_notify_C(oopDesc* obj, JavaThread* current))
437
438 // Very few notify/notifyAll operations find any threads on the waitset, so
439 // the dominant fast-path is to simply return.
440 // Relatedly, it's critical that notify/notifyAll be fast in order to
441 // reduce lock hold times.
442 if (!SafepointSynchronize::is_synchronizing()) {
443 if (ObjectSynchronizer::quick_notify(obj, current, false)) {
444 return;
445 }
446 }
447
448 // This is the case the fast-path above isn't provisioned to handle.
449 // The fast-path is designed to handle frequently arising cases in an efficient manner.
450 // (The fast-path is just a degenerate variant of the slow-path).
451 // Perform the dreaded state transition and pass control into the slow-path.
452 JRT_BLOCK;
453 Handle h_obj(current, obj);
454 ObjectSynchronizer::notify(h_obj, CHECK);
455 JRT_BLOCK_END;
456 JRT_END
457
458 JRT_BLOCK_ENTRY_PROF(void, OptoRuntime, monitor_notifyAll_C, OptoRuntime::monitor_notifyAll_C(oopDesc* obj, JavaThread* current))
459
460 if (!SafepointSynchronize::is_synchronizing() ) {
461 if (ObjectSynchronizer::quick_notify(obj, current, true)) {
462 return;
463 }
464 }
465
466 // This is the case the fast-path above isn't provisioned to handle.
467 // The fast-path is designed to handle frequently arising cases in an efficient manner.
468 // (The fast-path is just a degenerate variant of the slow-path).
469 // Perform the dreaded state transition and pass control into the slow-path.
470 JRT_BLOCK;
471 Handle h_obj(current, obj);
472 ObjectSynchronizer::notifyall(h_obj, CHECK);
473 JRT_BLOCK_END;
474 JRT_END
475
476 const TypeFunc *OptoRuntime::new_instance_Type() {
477 // create input type (domain)
478 const Type **fields = TypeTuple::fields(1);
1491 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1492 switch (register_save_policy[reg]) {
1493 case 'C': return false; //SOC
1494 case 'E': return true ; //SOE
1495 case 'N': return false; //NS
1496 case 'A': return false; //AS
1497 }
1498 ShouldNotReachHere();
1499 return false;
1500 }
1501
1502 //-----------------------------------------------------------------------
1503 // Exceptions
1504 //
1505
1506 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg);
1507
1508 // The method is an entry that is always called by a C++ method not
1509 // directly from compiled code. Compiled code will call the C++ method following.
1510 // We can't allow async exception to be installed during exception processing.
1511 JRT_ENTRY_NO_ASYNC_PROF(address, OptoRuntime, handle_exception_C_helper, OptoRuntime::handle_exception_C_helper(JavaThread* current, nmethod* &nm))
1512 // The frame we rethrow the exception to might not have been processed by the GC yet.
1513 // The stack watermark barrier takes care of detecting that and ensuring the frame
1514 // has updated oops.
1515 StackWatermarkSet::after_unwind(current);
1516
1517 // Do not confuse exception_oop with pending_exception. The exception_oop
1518 // is only used to pass arguments into the method. Not for general
1519 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1520 // the runtime stubs checks this on exit.
1521 assert(current->exception_oop() != nullptr, "exception oop is found");
1522 address handler_address = nullptr;
1523
1524 Handle exception(current, current->exception_oop());
1525 address pc = current->exception_pc();
1526
1527 // Clear out the exception oop and pc since looking up an
1528 // exception handler can cause class loading, which might throw an
1529 // exception and those fields are expected to be clear during
1530 // normal bytecode execution.
1531 current->clear_exception_oop_and_pc();
1767 return caller_frame.is_deoptimized_frame();
1768 }
1769
1770
1771 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1772 // create input type (domain)
1773 const Type **fields = TypeTuple::fields(1);
1774 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1775 // // The JavaThread* is passed to each routine as the last argument
1776 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1777 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1778
1779 // create result type (range)
1780 fields = TypeTuple::fields(0);
1781
1782 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1783
1784 return TypeFunc::make(domain,range);
1785 }
1786
1787 const TypeFunc *OptoRuntime::class_init_barrier_Type() {
1788 // create input type (domain)
1789 const Type** fields = TypeTuple::fields(1);
1790 fields[TypeFunc::Parms+0] = TypeKlassPtr::NOTNULL;
1791 // // The JavaThread* is passed to each routine as the last argument
1792 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1793 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+1, fields);
1794
1795 // create result type (range)
1796 fields = TypeTuple::fields(0);
1797 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
1798 return TypeFunc::make(domain,range);
1799 }
1800
1801 #if INCLUDE_JFR
1802 const TypeFunc *OptoRuntime::class_id_load_barrier_Type() {
1803 // create input type (domain)
1804 const Type **fields = TypeTuple::fields(1);
1805 fields[TypeFunc::Parms+0] = TypeInstPtr::KLASS;
1806 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms + 1, fields);
1807
1808 // create result type (range)
1809 fields = TypeTuple::fields(0);
1810
1811 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms + 0, fields);
1812
1813 return TypeFunc::make(domain,range);
1814 }
1815 #endif
1816
1817 //-----------------------------------------------------------------------------
1818 // Dtrace support. entry and exit probes have the same signature
1819 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1820 // create input type (domain)
1831 return TypeFunc::make(domain,range);
1832 }
1833
1834 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1835 // create input type (domain)
1836 const Type **fields = TypeTuple::fields(2);
1837 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1838 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1839
1840 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1841
1842 // create result type (range)
1843 fields = TypeTuple::fields(0);
1844
1845 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1846
1847 return TypeFunc::make(domain,range);
1848 }
1849
1850
1851 JRT_ENTRY_NO_ASYNC_PROF(void, OptoRuntime, register_finalizer, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* current))
1852 assert(oopDesc::is_oop(obj), "must be a valid oop");
1853 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1854 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1855 JRT_END
1856
1857 JRT_ENTRY_NO_ASYNC_PROF(void, OptoRuntime, class_init_barrier, OptoRuntime::class_init_barrier(Klass* k, JavaThread* current))
1858 InstanceKlass* ik = InstanceKlass::cast(k);
1859 if (ik->should_be_initialized()) {
1860 ik->initialize(CHECK);
1861 } else if (UsePerfData) {
1862 _perf_OptoRuntime_class_init_barrier_redundant_count->inc();
1863 }
1864 JRT_END
1865
1866 //-----------------------------------------------------------------------------
1867
1868 NamedCounter * volatile OptoRuntime::_named_counters = nullptr;
1869
1870 //
1871 // dump the collected NamedCounters.
1872 //
1873 void OptoRuntime::print_named_counters() {
1874 int total_lock_count = 0;
1875 int eliminated_lock_count = 0;
1876
1877 NamedCounter* c = _named_counters;
1878 while (c) {
1879 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1880 int count = c->count();
1881 if (count > 0) {
1882 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1883 if (Verbose) {
1884 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1885 }
1946 static void trace_exception(outputStream* st, oop exception_oop, address exception_pc, const char* msg) {
1947 trace_exception_counter++;
1948 stringStream tempst;
1949
1950 tempst.print("%d [Exception (%s): ", trace_exception_counter, msg);
1951 exception_oop->print_value_on(&tempst);
1952 tempst.print(" in ");
1953 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1954 if (blob->is_nmethod()) {
1955 blob->as_nmethod()->method()->print_value_on(&tempst);
1956 } else if (blob->is_runtime_stub()) {
1957 tempst.print("<runtime-stub>");
1958 } else {
1959 tempst.print("<unknown>");
1960 }
1961 tempst.print(" at " INTPTR_FORMAT, p2i(exception_pc));
1962 tempst.print("]");
1963
1964 st->print_raw_cr(tempst.freeze());
1965 }
1966
1967 #define DO_COUNTERS2(macro2, macro1) \
1968 macro2(OptoRuntime, new_instance_C) \
1969 macro2(OptoRuntime, new_array_C) \
1970 macro2(OptoRuntime, new_array_nozero_C) \
1971 macro2(OptoRuntime, multianewarray2_C) \
1972 macro2(OptoRuntime, multianewarray3_C) \
1973 macro2(OptoRuntime, multianewarray4_C) \
1974 macro2(OptoRuntime, multianewarrayN_C) \
1975 macro2(OptoRuntime, monitor_notify_C) \
1976 macro2(OptoRuntime, monitor_notifyAll_C) \
1977 macro2(OptoRuntime, handle_exception_C_helper) \
1978 macro2(OptoRuntime, register_finalizer) \
1979 macro2(OptoRuntime, class_init_barrier) \
1980 macro1(OptoRuntime, class_init_barrier_redundant)
1981
1982 #define INIT_COUNTER_TIME_AND_CNT(sub, name) \
1983 NEWPERFTICKCOUNTERS(_perf_##sub##_##name##_timer, SUN_CI, #sub "::" #name); \
1984 NEWPERFEVENTCOUNTER(_perf_##sub##_##name##_count, SUN_CI, #sub "::" #name "_count");
1985
1986 #define INIT_COUNTER_CNT(sub, name) \
1987 NEWPERFEVENTCOUNTER(_perf_##sub##_##name##_count, SUN_CI, #sub "::" #name "_count");
1988
1989 void OptoRuntime::init_counters() {
1990 assert(CompilerConfig::is_c2_enabled(), "");
1991
1992 if (UsePerfData) {
1993 EXCEPTION_MARK;
1994
1995 DO_COUNTERS2(INIT_COUNTER_TIME_AND_CNT, INIT_COUNTER_CNT)
1996
1997 if (HAS_PENDING_EXCEPTION) {
1998 vm_exit_during_initialization("jvm_perf_init failed unexpectedly");
1999 }
2000 }
2001 }
2002 #undef INIT_COUNTER_TIME_AND_CNT
2003 #undef INIT_COUNTER_CNT
2004
2005 #define PRINT_COUNTER_TIME_AND_CNT(sub, name) { \
2006 jlong count = _perf_##sub##_##name##_count->get_value(); \
2007 if (count > 0) { \
2008 st->print_cr(" %-30s = %4ldms (elapsed) %4ldms (thread) (%5ld events)", #sub "::" #name, \
2009 _perf_##sub##_##name##_timer->elapsed_counter_value_ms(), \
2010 _perf_##sub##_##name##_timer->thread_counter_value_ms(), \
2011 count); \
2012 }}
2013
2014 #define PRINT_COUNTER_CNT(sub, name) { \
2015 jlong count = _perf_##sub##_##name##_count->get_value(); \
2016 if (count > 0) { \
2017 st->print_cr(" %-30s = %5ld events", #name, count); \
2018 }}
2019
2020 void OptoRuntime::print_counters_on(outputStream* st) {
2021 if (UsePerfData && ProfileRuntimeCalls && CompilerConfig::is_c2_enabled()) {
2022 DO_COUNTERS2(PRINT_COUNTER_TIME_AND_CNT, PRINT_COUNTER_CNT)
2023 } else {
2024 st->print_cr(" OptoRuntime: no info (%s is disabled)",
2025 (!CompilerConfig::is_c2_enabled() ? "C2" : (UsePerfData ? "ProfileRuntimeCalls" : "UsePerfData")));
2026 }
2027 }
2028
2029 #undef PRINT_COUNTER_TIME_AND_CNT
2030 #undef PRINT_COUNTER_CNT
2031 #undef DO_COUNTERS2
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