287 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
288
289 // Pass oops back through thread local storage. Our apparent type to Java
290 // is that we return an oop, but we can block on exit from this routine and
291 // a GC can trash the oop in C's return register. The generated stub will
292 // fetch the oop from TLS after any possible GC.
293 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
294 current->set_vm_result(result);
295 JRT_BLOCK_END;
296
297
298 // inform GC that we won't do card marks for initializing writes.
299 SharedRuntime::on_slowpath_allocation_exit(current);
300
301 oop result = current->vm_result();
302 if ((len > 0) && (result != nullptr) &&
303 is_deoptimized_caller_frame(current)) {
304 // Zero array here if the caller is deoptimized.
305 int size = TypeArrayKlass::cast(array_type)->oop_size(result);
306 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
307 const size_t hs = arrayOopDesc::header_size(elem_type);
308 // Align to next 8 bytes to avoid trashing arrays's length.
309 const size_t aligned_hs = align_object_offset(hs);
310 HeapWord* obj = cast_from_oop<HeapWord*>(result);
311 if (aligned_hs > hs) {
312 Copy::zero_to_words(obj+hs, aligned_hs-hs);
313 }
314 // Optimized zeroing.
315 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
316 }
317
318 JRT_END
319
320 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
321
322 // multianewarray for 2 dimensions
323 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread* current))
324 #ifndef PRODUCT
325 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
326 #endif
327 assert(check_compiled_frame(current), "incorrect caller");
328 assert(elem_type->is_klass(), "not a class");
329 jint dims[2];
330 dims[0] = len1;
331 dims[1] = len2;
332 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
333 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
334 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
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287 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
288
289 // Pass oops back through thread local storage. Our apparent type to Java
290 // is that we return an oop, but we can block on exit from this routine and
291 // a GC can trash the oop in C's return register. The generated stub will
292 // fetch the oop from TLS after any possible GC.
293 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
294 current->set_vm_result(result);
295 JRT_BLOCK_END;
296
297
298 // inform GC that we won't do card marks for initializing writes.
299 SharedRuntime::on_slowpath_allocation_exit(current);
300
301 oop result = current->vm_result();
302 if ((len > 0) && (result != nullptr) &&
303 is_deoptimized_caller_frame(current)) {
304 // Zero array here if the caller is deoptimized.
305 int size = TypeArrayKlass::cast(array_type)->oop_size(result);
306 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
307 size_t hs_bytes = arrayOopDesc::base_offset_in_bytes(elem_type);
308 assert(is_aligned(hs_bytes, BytesPerInt), "must be 4 byte aligned");
309 HeapWord* obj = cast_from_oop<HeapWord*>(result);
310 if (!is_aligned(hs_bytes, BytesPerLong)) {
311 *reinterpret_cast<jint*>(reinterpret_cast<char*>(obj) + hs_bytes) = 0;
312 hs_bytes += BytesPerInt;
313 }
314
315 // Optimized zeroing.
316 assert(is_aligned(hs_bytes, BytesPerLong), "must be 8-byte aligned");
317 const size_t aligned_hs = hs_bytes / BytesPerLong;
318 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
319 }
320
321 JRT_END
322
323 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
324
325 // multianewarray for 2 dimensions
326 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread* current))
327 #ifndef PRODUCT
328 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
329 #endif
330 assert(check_compiled_frame(current), "incorrect caller");
331 assert(elem_type->is_klass(), "not a class");
332 jint dims[2];
333 dims[0] = len1;
334 dims[1] = len2;
335 Handle holder(current, elem_type->klass_holder()); // keep the klass alive
336 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
337 deoptimize_caller_frame(current, HAS_PENDING_EXCEPTION);
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