1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 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 "memory/allocation.inline.hpp" 26 #include "memory/padded.hpp" 27 #include "utilities/debug.hpp" 28 #include "utilities/globalDefinitions.hpp" 29 30 // Creates an aligned padded array. 31 // The memory can't be deleted since the raw memory chunk is not returned. 32 template <class T, MEMFLAGS flags, size_t alignment> 33 PaddedEnd<T>* PaddedArray<T, flags, alignment>::create_immortal(uint length) { 34 // Check that the PaddedEnd class works as intended. 35 STATIC_ASSERT(is_size_aligned_(sizeof(PaddedEnd<T>), alignment)); 36 37 // Allocate a chunk of memory large enough to allow for some alignment. 38 void* chunk = AllocateHeap(length * sizeof(PaddedEnd<T, alignment>) + alignment, flags); 39 40 // Make the initial alignment. 41 PaddedEnd<T>* aligned_padded_array = (PaddedEnd<T>*)align_pointer_up(chunk, alignment); 42 43 // Call the default constructor for each element. 44 for (uint i = 0; i < length; i++) { 45 ::new (&aligned_padded_array[i]) T(); 46 } 47 48 return aligned_padded_array; 49 }