src/hotspot/share/memory/oopFactory.cpp

@@ -28,13 +28,17 @@
  #include "classfile/vmSymbols.hpp"
  #include "gc/shared/collectedHeap.inline.hpp"
  #include "memory/oopFactory.hpp"
  #include "memory/resourceArea.hpp"
  #include "memory/universe.hpp"
+ #include "oops/flatArrayKlass.hpp"
+ #include "oops/flatArrayOop.inline.hpp"
+ #include "oops/flatArrayOop.hpp"
  #include "oops/instanceKlass.hpp"
  #include "oops/instanceOop.hpp"
  #include "oops/objArrayKlass.hpp"
+ #include "oops/objArrayOop.inline.hpp"
  #include "oops/objArrayOop.hpp"
  #include "oops/oop.inline.hpp"
  #include "oops/typeArrayKlass.hpp"
  #include "oops/typeArrayOop.inline.hpp"
  #include "runtime/handles.inline.hpp"

@@ -121,9 +125,45 @@
    } else {
      return InstanceKlass::cast(klass)->allocate_objArray(1, length, THREAD);
    }
  }
  
+ arrayOop oopFactory::new_valueArray(Klass* k, int length, TRAPS) {
+   InlineKlass* klass = InlineKlass::cast(k);
+   // Request a flat array, but we might not actually get it...either way "null-free" are the aaload/aastore semantics
+   Klass* array_klass = klass->value_array_klass(CHECK_NULL);
+   assert(array_klass->is_null_free_array_klass(), "Expect a null-free array class here");
+ 
+   arrayOop oop;
+   if (array_klass->is_flatArray_klass()) {
+     oop = (arrayOop) FlatArrayKlass::cast(array_klass)->allocate(length, CHECK_NULL);
+     assert(oop == nullptr || oop->is_flatArray(), "sanity");
+     assert(oop == nullptr || oop->klass()->is_flatArray_klass(), "sanity");
+   } else {
+     oop = (arrayOop) ObjArrayKlass::cast(array_klass)->allocate(length, CHECK_NULL);
+   }
+   assert(oop == nullptr || oop->klass()->is_null_free_array_klass(), "sanity");
+   assert(oop == nullptr || oop->is_null_free_array(), "sanity");
+   return oop;
+ }
+ 
+ objArrayHandle oopFactory::copy_flatArray_to_objArray(flatArrayHandle array, TRAPS) {
+   int len = array->length();
+   FlatArrayKlass* vak = FlatArrayKlass::cast(array->klass());
+   objArrayOop oarray = new_objectArray(array->length(), CHECK_(objArrayHandle()));
+   objArrayHandle oarrayh(THREAD, oarray);
+   vak->copy_array(array(), 0, oarrayh(), 0, len, CHECK_(objArrayHandle()));
+   return oarrayh;
+ }
+ 
+ objArrayHandle  oopFactory::ensure_objArray(oop array, TRAPS) {
+   if (array != nullptr && array->is_flatArray()) {
+     return copy_flatArray_to_objArray(flatArrayHandle(THREAD, flatArrayOop(array)), THREAD);
+   } else {
+     return objArrayHandle(THREAD, objArrayOop(array));
+   }
+ }
+ 
  objArrayHandle oopFactory::new_objArray_handle(Klass* klass, int length, TRAPS) {
    objArrayOop obj = new_objArray(klass, length, CHECK_(objArrayHandle()));
    return objArrayHandle(THREAD, obj);
  }