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src/hotspot/share/ci/ciArrayKlass.cpp

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  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  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 "ci/ciArrayKlass.hpp"
  27 #include "ci/ciObjArrayKlass.hpp"
  28 #include "ci/ciTypeArrayKlass.hpp"
  29 #include "ci/ciUtilities.hpp"

  30 #include "ci/ciValueArrayKlass.hpp"
  31 #include "ci/ciValueKlass.hpp"
  32 
  33 // ciArrayKlass
  34 //
  35 // This class represents a Klass* in the HotSpot virtual machine
  36 // whose Klass part in an ArrayKlass.
  37 
  38 // ------------------------------------------------------------------
  39 // ciArrayKlass::ciArrayKlass
  40 //
  41 // Loaded array klass.
  42 ciArrayKlass::ciArrayKlass(Klass* k) : ciKlass(k) {
  43   assert(get_Klass()->is_array_klass(), "wrong type");
  44   _dimension = get_ArrayKlass()->dimension();
  45 }
  46 
  47 // ------------------------------------------------------------------
  48 // ciArrayKlass::ciArrayKlass
  49 //


 101 //
 102 // What type is obtained when this array is indexed as many times as possible?
 103 ciArrayKlass* ciArrayKlass::make(ciType* element_type, bool never_null) {
 104   if (element_type->is_primitive_type()) {
 105     return ciTypeArrayKlass::make(element_type->basic_type());
 106   } else if (element_type->is_valuetype() && element_type->as_value_klass()->flatten_array() && never_null) {
 107     return ciValueArrayKlass::make(element_type->as_klass());
 108   } else {
 109     return ciObjArrayKlass::make(element_type->as_klass(), never_null);
 110   }
 111 }
 112 
 113 int ciArrayKlass::array_header_in_bytes() {
 114   return get_ArrayKlass()->array_header_in_bytes();
 115 }
 116 
 117 ArrayStorageProperties ciArrayKlass::storage_properties() {
 118   return get_ArrayKlass()->storage_properties();
 119 }
 120 








  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  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 "ci/ciArrayKlass.hpp"
  27 #include "ci/ciObjArrayKlass.hpp"
  28 #include "ci/ciTypeArrayKlass.hpp"
  29 #include "ci/ciUtilities.hpp"
  30 #include "ci/ciUtilities.inline.hpp"
  31 #include "ci/ciValueArrayKlass.hpp"
  32 #include "ci/ciValueKlass.hpp"
  33 
  34 // ciArrayKlass
  35 //
  36 // This class represents a Klass* in the HotSpot virtual machine
  37 // whose Klass part in an ArrayKlass.
  38 
  39 // ------------------------------------------------------------------
  40 // ciArrayKlass::ciArrayKlass
  41 //
  42 // Loaded array klass.
  43 ciArrayKlass::ciArrayKlass(Klass* k) : ciKlass(k) {
  44   assert(get_Klass()->is_array_klass(), "wrong type");
  45   _dimension = get_ArrayKlass()->dimension();
  46 }
  47 
  48 // ------------------------------------------------------------------
  49 // ciArrayKlass::ciArrayKlass
  50 //


 102 //
 103 // What type is obtained when this array is indexed as many times as possible?
 104 ciArrayKlass* ciArrayKlass::make(ciType* element_type, bool never_null) {
 105   if (element_type->is_primitive_type()) {
 106     return ciTypeArrayKlass::make(element_type->basic_type());
 107   } else if (element_type->is_valuetype() && element_type->as_value_klass()->flatten_array() && never_null) {
 108     return ciValueArrayKlass::make(element_type->as_klass());
 109   } else {
 110     return ciObjArrayKlass::make(element_type->as_klass(), never_null);
 111   }
 112 }
 113 
 114 int ciArrayKlass::array_header_in_bytes() {
 115   return get_ArrayKlass()->array_header_in_bytes();
 116 }
 117 
 118 ArrayStorageProperties ciArrayKlass::storage_properties() {
 119   return get_ArrayKlass()->storage_properties();
 120 }
 121 
 122 ciInstance* ciArrayKlass::component_mirror_instance() const {
 123   GUARDED_VM_ENTRY(
 124     oop component_mirror = ArrayKlass::cast(get_Klass())->component_mirror();
 125     return CURRENT_ENV->get_instance(component_mirror);
 126   )
 127 }
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