jdk8-mips64-public/hotspot: src/share/vm/memory/padded.inline.hpp@6acf14e730dd (annotated)

src/share/vm/memory/padded.inline.hpp@6acf14e730dd (annotated)

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

Tue, 16 Feb 2016 21:42:29 +0000

author: poonam
date: Tue, 16 Feb 2016 21:42:29 +0000
changeset 8308: 6acf14e730dd
parent 6409: 5479cb006184
child 6876: 710a3c8b516e
permissions: -rw-r--r--

8072725: Provide more granular levels for GC verification
Summary: Add option VerifySubSet to selectively verify the memory sub-systems
Reviewed-by: kevinw, jmasa

 /*
  * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "memory/allocation.inline.hpp"
 #include "memory/padded.hpp"
 #include "utilities/debug.hpp"
 #include "utilities/globalDefinitions.hpp"
 // Creates an aligned padded array.
 // The memory can't be deleted since the raw memory chunk is not returned.
 template <class T, MEMFLAGS flags, size_t alignment>
 PaddedEnd<T>* PaddedArray<T, flags, alignment>::create_unfreeable(uint length) {
   // Check that the PaddedEnd class works as intended.
   STATIC_ASSERT(is_size_aligned_(sizeof(PaddedEnd<T>), alignment));
   // Allocate a chunk of memory large enough to allow for some alignment.
   void* chunk = AllocateHeap(length * sizeof(PaddedEnd<T, alignment>) + alignment, flags);
   // Make the initial alignment.
   PaddedEnd<T>* aligned_padded_array = (PaddedEnd<T>*)align_pointer_up(chunk, alignment);
   // Call the default constructor for each element.
   for (uint i = 0; i < length; i++) {
     ::new (&aligned_padded_array[i]) T();
   }
   return aligned_padded_array;
 }
 template <class T, MEMFLAGS flags, size_t alignment>
 T** Padded2DArray<T, flags, alignment>::create_unfreeable(uint rows, uint columns, size_t* allocation_size) {
   // Calculate and align the size of the first dimension's table.
   size_t table_size = align_size_up_(rows * sizeof(T*), alignment);
   // The size of the separate rows.
   size_t row_size = align_size_up_(columns * sizeof(T), alignment);
   // Total size consists of the indirection table plus the rows.
   size_t total_size = table_size + rows * row_size + alignment;
   // Allocate a chunk of memory large enough to allow alignment of the chunk.
   void* chunk = AllocateHeap(total_size, flags);
   // Clear the allocated memory.
   memset(chunk, 0, total_size);
   // Align the chunk of memory.
   T** result = (T**)align_pointer_up(chunk, alignment);
   void* data_start = (void*)((uintptr_t)result + table_size);
   // Fill in the row table.
   for (size_t i = 0; i < rows; i++) {
     result[i] = (T*)((uintptr_t)data_start + i * row_size);
   }
   if (allocation_size != NULL) {
     *allocation_size = total_size;
   }
   return result;
 }
 template <class T, MEMFLAGS flags, size_t alignment>
 T* PaddedPrimitiveArray<T, flags, alignment>::create_unfreeable(size_t length) {
   // Allocate a chunk of memory large enough to allow for some alignment.
   void* chunk = AllocateHeap(length * sizeof(T) + alignment, flags);
   memset(chunk, 0, length * sizeof(T) + alignment);
   return (T*)align_pointer_up(chunk, alignment);
 }

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src/share/vm/memory/padded.inline.hpp@6acf14e730dd (annotated)

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