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src/share/vm/runtime/deoptimization.cpp

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rev 12854 : [mq]: gcinterface.patch


 214       assert (chunk->at(0)->scope() != NULL,"expect only compiled java frames");
 215       GrowableArray<ScopeValue*>* objects = chunk->at(0)->scope()->objects();
 216 
 217       // The flag return_oop() indicates call sites which return oop
 218       // in compiled code. Such sites include java method calls,
 219       // runtime calls (for example, used to allocate new objects/arrays
 220       // on slow code path) and any other calls generated in compiled code.
 221       // It is not guaranteed that we can get such information here only
 222       // by analyzing bytecode in deoptimized frames. This is why this flag
 223       // is set during method compilation (see Compile::Process_OopMap_Node()).
 224       // If the previous frame was popped or if we are dispatching an exception,
 225       // we don't have an oop result.
 226       bool save_oop_result = chunk->at(0)->scope()->return_oop() && !thread->popframe_forcing_deopt_reexecution() && (exec_mode == Unpack_deopt);
 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         bool skip_internal = (cm != NULL) && !cm->is_compiled_by_jvmci();
 245         reassign_fields(&deoptee, &map, objects, realloc_failures, skip_internal);
 246 #ifndef PRODUCT
 247         if (TraceDeoptimization) {
 248           ttyLocker ttyl;
 249           tty->print_cr("REALLOC OBJECTS in thread " INTPTR_FORMAT, p2i(thread));
 250           print_objects(objects, realloc_failures);
 251         }
 252 #endif
 253       }
 254       if (save_oop_result) {




 214       assert (chunk->at(0)->scope() != NULL,"expect only compiled java frames");
 215       GrowableArray<ScopeValue*>* objects = chunk->at(0)->scope()->objects();
 216 
 217       // The flag return_oop() indicates call sites which return oop
 218       // in compiled code. Such sites include java method calls,
 219       // runtime calls (for example, used to allocate new objects/arrays
 220       // on slow code path) and any other calls generated in compiled code.
 221       // It is not guaranteed that we can get such information here only
 222       // by analyzing bytecode in deoptimized frames. This is why this flag
 223       // is set during method compilation (see Compile::Process_OopMap_Node()).
 224       // If the previous frame was popped or if we are dispatching an exception,
 225       // we don't have an oop result.
 226       bool save_oop_result = chunk->at(0)->scope()->return_oop() && !thread->popframe_forcing_deopt_reexecution() && (exec_mode == Unpack_deopt);
 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         bool skip_internal = (cm != NULL) && !cm->is_compiled_by_jvmci();
 245         reassign_fields(&deoptee, &map, objects, realloc_failures, skip_internal);
 246 #ifndef PRODUCT
 247         if (TraceDeoptimization) {
 248           ttyLocker ttyl;
 249           tty->print_cr("REALLOC OBJECTS in thread " INTPTR_FORMAT, p2i(thread));
 250           print_objects(objects, realloc_failures);
 251         }
 252 #endif
 253       }
 254       if (save_oop_result) {


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