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src/share/vm/runtime/deoptimization.cpp

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rev 11777 : [mq]: gcinterface.patch


 214 #endif // INCLUDE_JVMCI
 215       assert (chunk->at(0)->scope() != NULL,"expect only compiled java frames");
 216       GrowableArray<ScopeValue*>* objects = chunk->at(0)->scope()->objects();
 217 
 218       // The flag return_oop() indicates call sites which return oop
 219       // in compiled code. Such sites include java method calls,
 220       // runtime calls (for example, used to allocate new objects/arrays
 221       // on slow code path) and any other calls generated in compiled code.
 222       // It is not guaranteed that we can get such information here only
 223       // by analyzing bytecode in deoptimized frames. This is why this flag
 224       // is set during method compilation (see Compile::Process_OopMap_Node()).
 225       // If the previous frame was popped, we don't have a result.
 226       bool save_oop_result = chunk->at(0)->scope()->return_oop() && !thread->popframe_forcing_deopt_reexecution();
 227       Handle return_value;
 228       if (save_oop_result) {
 229         // Reallocation may trigger GC. If deoptimization happened on return from
 230         // call which returns oop we need to save it since it is not in oopmap.
 231         oop result = deoptee.saved_oop_result(&map);
 232         assert(result == NULL || result->is_oop(), "must be oop");
 233         return_value = Handle(thread, result);
 234         assert(Universe::heap()->is_in_or_null(result), "must be heap pointer");
 235         if (TraceDeoptimization) {
 236           ttyLocker ttyl;
 237           tty->print_cr("SAVED OOP RESULT " INTPTR_FORMAT " in thread " INTPTR_FORMAT, p2i(result), p2i(thread));
 238         }
 239       }
 240       if (objects != NULL) {
 241         JRT_BLOCK
 242           realloc_failures = realloc_objects(thread, &deoptee, objects, THREAD);
 243         JRT_END
 244         reassign_fields(&deoptee, &map, objects, realloc_failures, skip_internal);
 245 #ifndef PRODUCT
 246         if (TraceDeoptimization) {
 247           ttyLocker ttyl;
 248           tty->print_cr("REALLOC OBJECTS in thread " INTPTR_FORMAT, p2i(thread));
 249           print_objects(objects, realloc_failures);
 250         }
 251 #endif
 252       }
 253       if (save_oop_result) {
 254         // Restore result.




 214 #endif // INCLUDE_JVMCI
 215       assert (chunk->at(0)->scope() != NULL,"expect only compiled java frames");
 216       GrowableArray<ScopeValue*>* objects = chunk->at(0)->scope()->objects();
 217 
 218       // The flag return_oop() indicates call sites which return oop
 219       // in compiled code. Such sites include java method calls,
 220       // runtime calls (for example, used to allocate new objects/arrays
 221       // on slow code path) and any other calls generated in compiled code.
 222       // It is not guaranteed that we can get such information here only
 223       // by analyzing bytecode in deoptimized frames. This is why this flag
 224       // is set during method compilation (see Compile::Process_OopMap_Node()).
 225       // If the previous frame was popped, we don't have a result.
 226       bool save_oop_result = chunk->at(0)->scope()->return_oop() && !thread->popframe_forcing_deopt_reexecution();
 227       Handle return_value;
 228       if (save_oop_result) {
 229         // Reallocation may trigger GC. If deoptimization happened on return from
 230         // call which returns oop we need to save it since it is not in oopmap.
 231         oop result = deoptee.saved_oop_result(&map);
 232         assert(result == NULL || result->is_oop(), "must be oop");
 233         return_value = Handle(thread, result);
 234         assert(GC::gc()->heap()->is_in_or_null(result), "must be heap pointer");
 235         if (TraceDeoptimization) {
 236           ttyLocker ttyl;
 237           tty->print_cr("SAVED OOP RESULT " INTPTR_FORMAT " in thread " INTPTR_FORMAT, p2i(result), p2i(thread));
 238         }
 239       }
 240       if (objects != NULL) {
 241         JRT_BLOCK
 242           realloc_failures = realloc_objects(thread, &deoptee, objects, THREAD);
 243         JRT_END
 244         reassign_fields(&deoptee, &map, objects, realloc_failures, skip_internal);
 245 #ifndef PRODUCT
 246         if (TraceDeoptimization) {
 247           ttyLocker ttyl;
 248           tty->print_cr("REALLOC OBJECTS in thread " INTPTR_FORMAT, p2i(thread));
 249           print_objects(objects, realloc_failures);
 250         }
 251 #endif
 252       }
 253       if (save_oop_result) {
 254         // Restore result.


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