Mercurial > hg > truffle
annotate src/share/vm/utilities/quickSort.cpp @ 7090:05ce1defa4f9
Common out some parts of UnsafeLoad/Store in UnsafeAccess
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 29 Nov 2012 13:24:08 +0100 |
parents | 3c648b9ad052 |
children | f2aebc22372a 6f817ce50129 |
rev | line source |
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3779 | 1 /* |
2 * Copyright (c) 2011, 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 "precompiled.hpp" | |
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6fd81579526f
7102044: G1: VM crashes with assert(old_end != new_end) failed: don't call this otherwise
brutisso
parents:
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changeset
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26 |
6fd81579526f
7102044: G1: VM crashes with assert(old_end != new_end) failed: don't call this otherwise
brutisso
parents:
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changeset
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27 /////////////// Unit tests /////////////// |
3779 | 28 |
29 #ifndef PRODUCT | |
30 | |
31 #include "runtime/os.hpp" | |
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7102044: G1: VM crashes with assert(old_end != new_end) failed: don't call this otherwise
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32 #include "utilities/quickSort.hpp" |
3779 | 33 #include <stdlib.h> |
34 | |
35 static int test_comparator(int a, int b) { | |
36 if (a == b) { | |
37 return 0; | |
38 } | |
39 if (a < b) { | |
40 return -1; | |
41 } | |
42 return 1; | |
43 } | |
44 | |
45 static int test_even_odd_comparator(int a, int b) { | |
46 bool a_is_odd = (a % 2) == 1; | |
47 bool b_is_odd = (b % 2) == 1; | |
48 if (a_is_odd == b_is_odd) { | |
49 return 0; | |
50 } | |
51 if (a_is_odd) { | |
52 return -1; | |
53 } | |
54 return 1; | |
55 } | |
56 | |
3981 | 57 extern "C" { |
58 static int test_stdlib_comparator(const void* a, const void* b) { | |
59 int ai = *(int*)a; | |
60 int bi = *(int*)b; | |
61 if (ai == bi) { | |
62 return 0; | |
63 } | |
64 if (ai < bi) { | |
65 return -1; | |
66 } | |
67 return 1; | |
3779 | 68 } |
69 } | |
70 | |
71 void QuickSort::print_array(const char* prefix, int* array, int length) { | |
72 tty->print("%s:", prefix); | |
73 for (int i = 0; i < length; i++) { | |
74 tty->print(" %d", array[i]); | |
75 } | |
76 tty->print_cr(""); | |
77 } | |
78 | |
79 bool QuickSort::compare_arrays(int* actual, int* expected, int length) { | |
80 for (int i = 0; i < length; i++) { | |
81 if (actual[i] != expected[i]) { | |
82 print_array("Sorted array ", actual, length); | |
83 print_array("Expected array", expected, length); | |
84 return false; | |
85 } | |
86 } | |
87 return true; | |
88 } | |
89 | |
90 template <class C> | |
91 bool QuickSort::sort_and_compare(int* arrayToSort, int* expectedResult, int length, C comparator, bool idempotent) { | |
92 sort<int, C>(arrayToSort, length, comparator, idempotent); | |
93 return compare_arrays(arrayToSort, expectedResult, length); | |
94 } | |
95 | |
4708 | 96 void QuickSort::test_quick_sort() { |
3779 | 97 { |
98 int* test_array = NULL; | |
99 int* expected_array = NULL; | |
100 assert(sort_and_compare(test_array, expected_array, 0, test_comparator), "Empty array not handled"); | |
101 } | |
102 { | |
103 int test_array[] = {3}; | |
104 int expected_array[] = {3}; | |
105 assert(sort_and_compare(test_array, expected_array, 1, test_comparator), "Single value array not handled"); | |
106 } | |
107 { | |
108 int test_array[] = {3,2}; | |
109 int expected_array[] = {2,3}; | |
110 assert(sort_and_compare(test_array, expected_array, 2, test_comparator), "Array with 2 values not correctly sorted"); | |
111 } | |
112 { | |
113 int test_array[] = {3,2,1}; | |
114 int expected_array[] = {1,2,3}; | |
115 assert(sort_and_compare(test_array, expected_array, 3, test_comparator), "Array with 3 values not correctly sorted"); | |
116 } | |
117 { | |
118 int test_array[] = {4,3,2,1}; | |
119 int expected_array[] = {1,2,3,4}; | |
120 assert(sort_and_compare(test_array, expected_array, 4, test_comparator), "Array with 4 values not correctly sorted"); | |
121 } | |
122 { | |
123 int test_array[] = {7,1,5,3,6,9,8,2,4,0}; | |
124 int expected_array[] = {0,1,2,3,4,5,6,7,8,9}; | |
125 assert(sort_and_compare(test_array, expected_array, 10, test_comparator), "Array with 10 values not correctly sorted"); | |
126 } | |
127 { | |
128 int test_array[] = {4,4,1,4}; | |
129 int expected_array[] = {1,4,4,4}; | |
130 assert(sort_and_compare(test_array, expected_array, 4, test_comparator), "3 duplicates not sorted correctly"); | |
131 } | |
132 { | |
133 int test_array[] = {0,1,2,3,4,5,6,7,8,9}; | |
134 int expected_array[] = {0,1,2,3,4,5,6,7,8,9}; | |
135 assert(sort_and_compare(test_array, expected_array, 10, test_comparator), "Already sorted array not correctly sorted"); | |
136 } | |
137 { | |
138 // one of the random arrays that found an issue in the partion method. | |
139 int test_array[] = {76,46,81,8,64,56,75,11,51,55,11,71,59,27,9,64,69,75,21,25,39,40,44,32,7,8,40,41,24,78,24,74,9,65,28,6,40,31,22,13,27,82}; | |
140 int expected_array[] = {6,7,8,8,9,9,11,11,13,21,22,24,24,25,27,27,28,31,32,39,40,40,40,41,44,46,51,55,56,59,64,64,65,69,71,74,75,75,76,78,81,82}; | |
141 assert(sort_and_compare(test_array, expected_array, 42, test_comparator), "Not correctly sorted"); | |
142 } | |
143 { | |
144 int test_array[] = {2,8,1,4}; | |
145 int expected_array[] = {1,4,2,8}; | |
146 assert(sort_and_compare(test_array, expected_array, 4, test_even_odd_comparator), "Even/odd not sorted correctly"); | |
147 } | |
148 { // Some idempotent tests | |
149 { | |
150 // An array of lenght 3 is only sorted by find_pivot. Make sure that it is idempotent. | |
151 int test_array[] = {1,4,8}; | |
152 int expected_array[] = {1,4,8}; | |
153 assert(sort_and_compare(test_array, expected_array, 3, test_even_odd_comparator, true), "Even/odd not idempotent"); | |
154 } | |
155 { | |
156 int test_array[] = {1,7,9,4,8,2}; | |
157 int expected_array[] = {1,7,9,4,8,2}; | |
158 assert(sort_and_compare(test_array, expected_array, 6, test_even_odd_comparator, true), "Even/odd not idempotent"); | |
159 } | |
160 { | |
161 int test_array[] = {1,9,7,4,2,8}; | |
162 int expected_array[] = {1,9,7,4,2,8}; | |
163 assert(sort_and_compare(test_array, expected_array, 6, test_even_odd_comparator, true), "Even/odd not idempotent"); | |
164 } | |
165 { | |
166 int test_array[] = {7,9,1,2,8,4}; | |
167 int expected_array[] = {7,9,1,2,8,4}; | |
168 assert(sort_and_compare(test_array, expected_array, 6, test_even_odd_comparator, true), "Even/odd not idempotent"); | |
169 } | |
170 { | |
171 int test_array[] = {7,1,9,2,4,8}; | |
172 int expected_array[] = {7,1,9,2,4,8}; | |
173 assert(sort_and_compare(test_array, expected_array, 6, test_even_odd_comparator, true), "Even/odd not idempotent"); | |
174 } | |
175 { | |
176 int test_array[] = {9,1,7,4,8,2}; | |
177 int expected_array[] = {9,1,7,4,8,2}; | |
178 assert(sort_and_compare(test_array, expected_array, 6, test_even_odd_comparator, true), "Even/odd not idempotent"); | |
179 } | |
180 { | |
181 int test_array[] = {9,7,1,4,2,8}; | |
182 int expected_array[] = {9,7,1,4,2,8}; | |
183 assert(sort_and_compare(test_array, expected_array, 6, test_even_odd_comparator, true), "Even/odd not idempotent"); | |
184 } | |
185 } | |
186 | |
187 // test sorting random arrays | |
188 for (int i = 0; i < 1000; i++) { | |
189 int length = os::random() % 100; | |
190 int* test_array = new int[length]; | |
191 int* expected_array = new int[length]; | |
192 for (int j = 0; j < length; j++) { | |
193 // Choose random values, but get a chance of getting duplicates | |
194 test_array[j] = os::random() % (length * 2); | |
195 expected_array[j] = test_array[j]; | |
196 } | |
197 | |
198 // Compare sorting to stdlib::qsort() | |
199 qsort(expected_array, length, sizeof(int), test_stdlib_comparator); | |
200 assert(sort_and_compare(test_array, expected_array, length, test_comparator), "Random array not correctly sorted"); | |
201 | |
202 // Make sure sorting is idempotent. | |
203 // Both test_array and expected_array are sorted by the test_comparator. | |
204 // Now sort them once with the test_even_odd_comparator. Then sort the | |
205 // test_array one more time with test_even_odd_comparator and verify that | |
206 // it is idempotent. | |
207 sort(expected_array, length, test_even_odd_comparator, true); | |
208 sort(test_array, length, test_even_odd_comparator, true); | |
209 assert(compare_arrays(test_array, expected_array, length), "Sorting identical arrays rendered different results"); | |
210 sort(test_array, length, test_even_odd_comparator, true); | |
211 assert(compare_arrays(test_array, expected_array, length), "Sorting already sorted array changed order of elements - not idempotent"); | |
212 | |
213 delete[] test_array; | |
214 delete[] expected_array; | |
215 } | |
216 } | |
217 | |
218 #endif |