Mercurial > hg > truffle
annotate src/share/vm/memory/padded.inline.hpp @ 18134:6a2f814224b1
hotspot/graal: simplify CTW logic. now, the following configurations are supported:
(1) CTW with Graal, graal compiled by itself with bootstrap (--vm graal -XX:+BootstrapGraal -XX:-TieredCompilation -XX:+CompileTheWorld)
(2) CTW with Graal, graal compiled by C1/itself aka. tiered with bootstrap (--vm graal -XX:+BootstrapGraal -XX:+TieredCompilation +XX:+CompileTheWorld)
(3) CTW with Graal, graal compiled by itself without bootstrap (--vm graal -XX:-BootstrapGraal -XX:-TieredCompilation -XX:+CompileTheWorld)
(4) CTW with Graal, graal compiled by C1/itself aka. tiered without bootstrap (--vm graal -XX:-BootstrapGraal -XX:+TieredCompilation -XX:+CompileTheWorld)
(5) CTW with Graal, graal compiled by C1/C2 aka. hosted (--vm server -XX:+CompileTheWorld)
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Tue, 21 Oct 2014 10:17:06 +0200 |
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1 /* |
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2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "memory/allocation.inline.hpp" |
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26 #include "memory/padded.hpp" |
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27 #include "utilities/debug.hpp" |
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28 #include "utilities/globalDefinitions.hpp" |
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29 |
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30 // Creates an aligned padded array. |
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31 // The memory can't be deleted since the raw memory chunk is not returned. |
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32 template <class T, MEMFLAGS flags, size_t alignment> |
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33 PaddedEnd<T>* PaddedArray<T, flags, alignment>::create_unfreeable(uint length) { |
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34 // Check that the PaddedEnd class works as intended. |
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35 STATIC_ASSERT(is_size_aligned_(sizeof(PaddedEnd<T>), alignment)); |
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36 |
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37 // Allocate a chunk of memory large enough to allow for some alignment. |
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38 void* chunk = AllocateHeap(length * sizeof(PaddedEnd<T, alignment>) + alignment, flags); |
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39 |
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40 // Make the initial alignment. |
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41 PaddedEnd<T>* aligned_padded_array = (PaddedEnd<T>*)align_pointer_up(chunk, alignment); |
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42 |
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43 // Call the default constructor for each element. |
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44 for (uint i = 0; i < length; i++) { |
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45 ::new (&aligned_padded_array[i]) T(); |
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46 } |
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47 |
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48 return aligned_padded_array; |
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49 } |
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50 |
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51 template <class T, MEMFLAGS flags, size_t alignment> |
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52 T** Padded2DArray<T, flags, alignment>::create_unfreeable(uint rows, uint columns, size_t* allocation_size) { |
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53 // Calculate and align the size of the first dimension's table. |
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54 size_t table_size = align_size_up_(rows * sizeof(T*), alignment); |
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55 // The size of the separate rows. |
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56 size_t row_size = align_size_up_(columns * sizeof(T), alignment); |
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57 // Total size consists of the indirection table plus the rows. |
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58 size_t total_size = table_size + rows * row_size + alignment; |
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59 |
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60 // Allocate a chunk of memory large enough to allow alignment of the chunk. |
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61 void* chunk = AllocateHeap(total_size, flags); |
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62 // Clear the allocated memory. |
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63 memset(chunk, 0, total_size); |
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64 // Align the chunk of memory. |
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65 T** result = (T**)align_pointer_up(chunk, alignment); |
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66 void* data_start = (void*)((uintptr_t)result + table_size); |
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67 |
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68 // Fill in the row table. |
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69 for (size_t i = 0; i < rows; i++) { |
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70 result[i] = (T*)((uintptr_t)data_start + i * row_size); |
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71 } |
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72 |
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73 if (allocation_size != NULL) { |
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74 *allocation_size = total_size; |
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75 } |
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76 |
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77 return result; |
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78 } |
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79 |
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80 template <class T, MEMFLAGS flags, size_t alignment> |
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81 T* PaddedPrimitiveArray<T, flags, alignment>::create_unfreeable(size_t length) { |
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82 // Allocate a chunk of memory large enough to allow for some alignment. |
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83 void* chunk = AllocateHeap(length * sizeof(T) + alignment, flags); |
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84 |
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85 memset(chunk, 0, length * sizeof(T) + alignment); |
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86 |
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87 return (T*)align_pointer_up(chunk, alignment); |
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88 } |