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fix
author mir3636
date Wed, 06 Dec 2017 14:37:17 +0900
parents 803732b1fca8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //===--- StringMap.cpp - String Hash table map implementation -------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file implements the StringMap class.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "llvm/ADT/StringMap.h"
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15 #include "llvm/ADT/StringExtras.h"
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16 #include "llvm/Support/Compiler.h"
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17 #include "llvm/Support/MathExtras.h"
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18 #include <cassert>
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19
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20 using namespace llvm;
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21
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22 /// Returns the number of buckets to allocate to ensure that the DenseMap can
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23 /// accommodate \p NumEntries without need to grow().
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24 static unsigned getMinBucketToReserveForEntries(unsigned NumEntries) {
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25 // Ensure that "NumEntries * 4 < NumBuckets * 3"
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26 if (NumEntries == 0)
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27 return 0;
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28 // +1 is required because of the strict equality.
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29 // For example if NumEntries is 48, we need to return 401.
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30 return NextPowerOf2(NumEntries * 4 / 3 + 1);
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31 }
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32
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33 StringMapImpl::StringMapImpl(unsigned InitSize, unsigned itemSize) {
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34 ItemSize = itemSize;
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35
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36 // If a size is specified, initialize the table with that many buckets.
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37 if (InitSize) {
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38 // The table will grow when the number of entries reach 3/4 of the number of
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39 // buckets. To guarantee that "InitSize" number of entries can be inserted
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40 // in the table without growing, we allocate just what is needed here.
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41 init(getMinBucketToReserveForEntries(InitSize));
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42 return;
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43 }
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44
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45 // Otherwise, initialize it with zero buckets to avoid the allocation.
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46 TheTable = nullptr;
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47 NumBuckets = 0;
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48 NumItems = 0;
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49 NumTombstones = 0;
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50 }
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51
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52 void StringMapImpl::init(unsigned InitSize) {
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53 assert((InitSize & (InitSize-1)) == 0 &&
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54 "Init Size must be a power of 2 or zero!");
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55
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56 unsigned NewNumBuckets = InitSize ? InitSize : 16;
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57 NumItems = 0;
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58 NumTombstones = 0;
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59
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60 TheTable = (StringMapEntryBase **)calloc(NewNumBuckets+1,
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61 sizeof(StringMapEntryBase **) +
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62 sizeof(unsigned));
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63
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64 if (TheTable == nullptr)
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65 report_bad_alloc_error("Allocation of StringMap table failed.");
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66
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67 // Set the member only if TheTable was successfully allocated
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68 NumBuckets = NewNumBuckets;
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69
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70 // Allocate one extra bucket, set it to look filled so the iterators stop at
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71 // end.
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72 TheTable[NumBuckets] = (StringMapEntryBase*)2;
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73 }
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74
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75 /// LookupBucketFor - Look up the bucket that the specified string should end
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76 /// up in. If it already exists as a key in the map, the Item pointer for the
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77 /// specified bucket will be non-null. Otherwise, it will be null. In either
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78 /// case, the FullHashValue field of the bucket will be set to the hash value
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79 /// of the string.
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80 unsigned StringMapImpl::LookupBucketFor(StringRef Name) {
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81 unsigned HTSize = NumBuckets;
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82 if (HTSize == 0) { // Hash table unallocated so far?
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83 init(16);
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84 HTSize = NumBuckets;
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85 }
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86 unsigned FullHashValue = HashString(Name);
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87 unsigned BucketNo = FullHashValue & (HTSize-1);
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88 unsigned *HashTable = (unsigned *)(TheTable + NumBuckets + 1);
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89
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90 unsigned ProbeAmt = 1;
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91 int FirstTombstone = -1;
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92 while (true) {
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93 StringMapEntryBase *BucketItem = TheTable[BucketNo];
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94 // If we found an empty bucket, this key isn't in the table yet, return it.
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95 if (LLVM_LIKELY(!BucketItem)) {
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96 // If we found a tombstone, we want to reuse the tombstone instead of an
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97 // empty bucket. This reduces probing.
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98 if (FirstTombstone != -1) {
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99 HashTable[FirstTombstone] = FullHashValue;
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100 return FirstTombstone;
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101 }
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102
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103 HashTable[BucketNo] = FullHashValue;
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104 return BucketNo;
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105 }
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106
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107 if (BucketItem == getTombstoneVal()) {
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108 // Skip over tombstones. However, remember the first one we see.
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109 if (FirstTombstone == -1) FirstTombstone = BucketNo;
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110 } else if (LLVM_LIKELY(HashTable[BucketNo] == FullHashValue)) {
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111 // If the full hash value matches, check deeply for a match. The common
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112 // case here is that we are only looking at the buckets (for item info
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113 // being non-null and for the full hash value) not at the items. This
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114 // is important for cache locality.
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115
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116 // Do the comparison like this because Name isn't necessarily
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117 // null-terminated!
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118 char *ItemStr = (char*)BucketItem+ItemSize;
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119 if (Name == StringRef(ItemStr, BucketItem->getKeyLength())) {
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120 // We found a match!
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121 return BucketNo;
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122 }
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123 }
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124
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125 // Okay, we didn't find the item. Probe to the next bucket.
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126 BucketNo = (BucketNo+ProbeAmt) & (HTSize-1);
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127
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128 // Use quadratic probing, it has fewer clumping artifacts than linear
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129 // probing and has good cache behavior in the common case.
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130 ++ProbeAmt;
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131 }
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132 }
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133
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134 /// FindKey - Look up the bucket that contains the specified key. If it exists
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135 /// in the map, return the bucket number of the key. Otherwise return -1.
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136 /// This does not modify the map.
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137 int StringMapImpl::FindKey(StringRef Key) const {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 unsigned HTSize = NumBuckets;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 if (HTSize == 0) return -1; // Really empty table?
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 unsigned FullHashValue = HashString(Key);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 unsigned BucketNo = FullHashValue & (HTSize-1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 unsigned *HashTable = (unsigned *)(TheTable + NumBuckets + 1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 unsigned ProbeAmt = 1;
120
1172e4bd9c6f update 4.0.0
mir3636
parents: 95
diff changeset
145 while (true) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 StringMapEntryBase *BucketItem = TheTable[BucketNo];
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 // If we found an empty bucket, this key isn't in the table yet, return.
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
148 if (LLVM_LIKELY(!BucketItem))
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 return -1;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 if (BucketItem == getTombstoneVal()) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 // Ignore tombstones.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 } else if (LLVM_LIKELY(HashTable[BucketNo] == FullHashValue)) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 // If the full hash value matches, check deeply for a match. The common
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 // case here is that we are only looking at the buckets (for item info
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 // being non-null and for the full hash value) not at the items. This
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 // is important for cache locality.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 // Do the comparison like this because NameStart isn't necessarily
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 // null-terminated!
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 char *ItemStr = (char*)BucketItem+ItemSize;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 if (Key == StringRef(ItemStr, BucketItem->getKeyLength())) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 // We found a match!
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 return BucketNo;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 // Okay, we didn't find the item. Probe to the next bucket.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 BucketNo = (BucketNo+ProbeAmt) & (HTSize-1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 // Use quadratic probing, it has fewer clumping artifacts than linear
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 // probing and has good cache behavior in the common case.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 ++ProbeAmt;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 /// RemoveKey - Remove the specified StringMapEntry from the table, but do not
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 /// delete it. This aborts if the value isn't in the table.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 void StringMapImpl::RemoveKey(StringMapEntryBase *V) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 const char *VStr = (char*)V + ItemSize;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 StringMapEntryBase *V2 = RemoveKey(StringRef(VStr, V->getKeyLength()));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 (void)V2;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 assert(V == V2 && "Didn't find key?");
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 /// RemoveKey - Remove the StringMapEntry for the specified key from the
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 /// table, returning it. If the key is not in the table, this returns null.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 StringMapEntryBase *StringMapImpl::RemoveKey(StringRef Key) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 int Bucket = FindKey(Key);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
190 if (Bucket == -1) return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 StringMapEntryBase *Result = TheTable[Bucket];
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 TheTable[Bucket] = getTombstoneVal();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 --NumItems;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 ++NumTombstones;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 assert(NumItems + NumTombstones <= NumBuckets);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 return Result;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 /// RehashTable - Grow the table, redistributing values into the buckets with
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 /// the appropriate mod-of-hashtable-size.
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
203 unsigned StringMapImpl::RehashTable(unsigned BucketNo) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 unsigned NewSize;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 unsigned *HashTable = (unsigned *)(TheTable + NumBuckets + 1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 // If the hash table is now more than 3/4 full, or if fewer than 1/8 of
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 // the buckets are empty (meaning that many are filled with tombstones),
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209 // grow/rehash the table.
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
210 if (LLVM_UNLIKELY(NumItems * 4 > NumBuckets * 3)) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 NewSize = NumBuckets*2;
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
212 } else if (LLVM_UNLIKELY(NumBuckets - (NumItems + NumTombstones) <=
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
213 NumBuckets / 8)) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 NewSize = NumBuckets;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 } else {
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
216 return BucketNo;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
219 unsigned NewBucketNo = BucketNo;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220 // Allocate one extra bucket which will always be non-empty. This allows the
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 // iterators to stop at end.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222 StringMapEntryBase **NewTableArray =
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 (StringMapEntryBase **)calloc(NewSize+1, sizeof(StringMapEntryBase *) +
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 sizeof(unsigned));
121
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
225
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
226 if (NewTableArray == nullptr)
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
227 report_bad_alloc_error("Allocation of StringMap hash table failed.");
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
228
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 unsigned *NewHashArray = (unsigned *)(NewTableArray + NewSize + 1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 NewTableArray[NewSize] = (StringMapEntryBase*)2;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232 // Rehash all the items into their new buckets. Luckily :) we already have
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233 // the hash values available, so we don't have to rehash any strings.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 for (unsigned I = 0, E = NumBuckets; I != E; ++I) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 StringMapEntryBase *Bucket = TheTable[I];
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 if (Bucket && Bucket != getTombstoneVal()) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 // Fast case, bucket available.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 unsigned FullHash = HashTable[I];
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 unsigned NewBucket = FullHash & (NewSize-1);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
240 if (!NewTableArray[NewBucket]) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 NewTableArray[FullHash & (NewSize-1)] = Bucket;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 NewHashArray[FullHash & (NewSize-1)] = FullHash;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
243 if (I == BucketNo)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
244 NewBucketNo = NewBucket;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 continue;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248 // Otherwise probe for a spot.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 unsigned ProbeSize = 1;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 do {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 NewBucket = (NewBucket + ProbeSize++) & (NewSize-1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 } while (NewTableArray[NewBucket]);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254 // Finally found a slot. Fill it in.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 NewTableArray[NewBucket] = Bucket;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 NewHashArray[NewBucket] = FullHash;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
257 if (I == BucketNo)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
258 NewBucketNo = NewBucket;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262 free(TheTable);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 TheTable = NewTableArray;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 NumBuckets = NewSize;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
266 NumTombstones = 0;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
267 return NewBucketNo;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
268 }