annotate src/share/vm/utilities/array.cpp @ 14660:3c6ae9109a86

8035946: Use ResourceHashtable for dependency checking Summary: Use ResourceHashtable for dependency checking and delete GenericHashtable Reviewed-by: kvn, coleenp
author anoll
date Mon, 03 Mar 2014 08:04:14 +0100
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1 /*
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2 * Copyright (c) 2000, 2012, 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 "precompiled.hpp"
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26 #include "memory/resourceArea.hpp"
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27 #include "runtime/thread.inline.hpp"
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28 #include "utilities/array.hpp"
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29
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30
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31 #ifdef ASSERT
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32 void ResourceArray::init_nesting() {
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33 _nesting = Thread::current()->resource_area()->nesting();
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34 }
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35 #endif
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36
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37
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38 void ResourceArray::sort(size_t esize, ftype f) {
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39 if (!is_empty()) qsort(_data, length(), esize, f);
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40 }
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41 template <MEMFLAGS F> void CHeapArray<F>::sort(size_t esize, ftype f) {
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42 if (!is_empty()) qsort(_data, length(), esize, f);
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43 }
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44
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45
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46 void ResourceArray::expand(size_t esize, int i, int& size) {
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47 // make sure we are expanding within the original resource mark
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48 assert(
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49 _nesting == Thread::current()->resource_area()->nesting(),
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50 "allocating outside original resource mark"
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51 );
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52 // determine new size
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53 if (size == 0) size = 4; // prevent endless loop
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54 while (i >= size) size *= 2;
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55 // allocate and initialize new data section
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56 void* data = resource_allocate_bytes(esize * size);
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57 memcpy(data, _data, esize * length());
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58 _data = data;
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59 }
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60
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61
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62 template <MEMFLAGS F> void CHeapArray<F>::expand(size_t esize, int i, int& size) {
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63 // determine new size
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64 if (size == 0) size = 4; // prevent endless loop
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65 while (i >= size) size *= 2;
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66 // allocate and initialize new data section
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67 void* data = NEW_C_HEAP_ARRAY(char*, esize * size, F);
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68 memcpy(data, _data, esize * length());
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69 FREE_C_HEAP_ARRAY(char*, _data, F);
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70 _data = data;
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71 }
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74 void ResourceArray::remove_at(size_t esize, int i) {
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75 assert(0 <= i && i < length(), "index out of bounds");
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76 _length--;
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77 void* dst = (char*)_data + i*esize;
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78 void* src = (char*)dst + esize;
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79 size_t cnt = (length() - i)*esize;
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80 memmove(dst, src, cnt);
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81 }
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82
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83 template <MEMFLAGS F> void CHeapArray<F>::remove_at(size_t esize, int i) {
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84 assert(0 <= i && i < length(), "index out of bounds");
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85 _length--;
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86 void* dst = (char*)_data + i*esize;
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87 void* src = (char*)dst + esize;
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88 size_t cnt = (length() - i)*esize;
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89 memmove(dst, src, cnt);
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90 }