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src/share/vm/memory/padded.inline.hpp

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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 #ifndef SHARE_VM_MEMORY_PADDED_INLINE_HPP
  26 #define SHARE_VM_MEMORY_PADDED_INLINE_HPP
  27 
  28 #include "memory/allocation.inline.hpp"
  29 #include "memory/padded.hpp"

  30 #include "utilities/debug.hpp"
  31 #include "utilities/globalDefinitions.hpp"
  32 
  33 // Creates an aligned padded array.
  34 // The memory can't be deleted since the raw memory chunk is not returned.
  35 template <class T, MEMFLAGS flags, size_t alignment>
  36 PaddedEnd<T>* PaddedArray<T, flags, alignment>::create_unfreeable(uint length) {
  37   // Check that the PaddedEnd class works as intended.
  38   STATIC_ASSERT(is_aligned_(sizeof(PaddedEnd<T>), alignment));
  39 
  40   // Allocate a chunk of memory large enough to allow for some alignment.
  41   void* chunk = AllocateHeap(length * sizeof(PaddedEnd<T, alignment>) + alignment, flags);
  42 
  43   // Make the initial alignment.
  44   PaddedEnd<T>* aligned_padded_array = (PaddedEnd<T>*)align_up(chunk, alignment);
  45 
  46   // Call the default constructor for each element.
  47   for (uint i = 0; i < length; i++) {
  48     ::new (&aligned_padded_array[i]) T();
  49   }




  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 #ifndef SHARE_VM_MEMORY_PADDED_INLINE_HPP
  26 #define SHARE_VM_MEMORY_PADDED_INLINE_HPP
  27 
  28 #include "memory/allocation.inline.hpp"
  29 #include "memory/padded.hpp"
  30 #include "utilities/align.hpp"
  31 #include "utilities/debug.hpp"
  32 #include "utilities/globalDefinitions.hpp"
  33 
  34 // Creates an aligned padded array.
  35 // The memory can't be deleted since the raw memory chunk is not returned.
  36 template <class T, MEMFLAGS flags, size_t alignment>
  37 PaddedEnd<T>* PaddedArray<T, flags, alignment>::create_unfreeable(uint length) {
  38   // Check that the PaddedEnd class works as intended.
  39   STATIC_ASSERT(is_aligned_(sizeof(PaddedEnd<T>), alignment));
  40 
  41   // Allocate a chunk of memory large enough to allow for some alignment.
  42   void* chunk = AllocateHeap(length * sizeof(PaddedEnd<T, alignment>) + alignment, flags);
  43 
  44   // Make the initial alignment.
  45   PaddedEnd<T>* aligned_padded_array = (PaddedEnd<T>*)align_up(chunk, alignment);
  46 
  47   // Call the default constructor for each element.
  48   for (uint i = 0; i < length; i++) {
  49     ::new (&aligned_padded_array[i]) T();
  50   }


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