Mercurial > hg > graal-compiler
view src/share/vm/memory/padded.inline.hpp @ 20195:418bb2c2b55a
8049327: [TESTBUG] gc/logging/TestGCId.java assumes default PrintGCID value is true
Reviewed-by: ehelin, tschatzl
author | brutisso |
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date | Mon, 07 Jul 2014 14:44:33 +0200 |
parents | 5479cb006184 |
children |
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/* * 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); }