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97020474 | 1 | /* Measure strncpy functions. |
f7a9f785 | 2 | Copyright (C) 2013-2016 Free Software Foundation, Inc. |
97020474 SP |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
d183b96e SL |
19 | #ifdef WIDE |
20 | # include <wchar.h> | |
21 | # define CHAR wchar_t | |
22 | # define UCHAR wchar_t | |
23 | # define BIG_CHAR WCHAR_MAX | |
24 | # define SMALL_CHAR 1273 | |
25 | # define MEMCMP wmemcmp | |
26 | # define MEMSET wmemset | |
27 | # define STRNLEN wcsnlen | |
28 | #else | |
29 | # define CHAR char | |
30 | # define UCHAR unsigned char | |
31 | # define BIG_CHAR CHAR_MAX | |
32 | # define SMALL_CHAR 127 | |
33 | # define MEMCMP memcmp | |
34 | # define MEMSET memset | |
35 | # define STRNLEN strnlen | |
36 | #endif /* !WIDE */ | |
37 | ||
38 | ||
97020474 SP |
39 | #ifndef STRNCPY_RESULT |
40 | # define STRNCPY_RESULT(dst, len, n) dst | |
41 | # define TEST_MAIN | |
d183b96e SL |
42 | # ifndef WIDE |
43 | # define TEST_NAME "strncpy" | |
44 | # else | |
45 | # define TEST_NAME "wcsncpy" | |
46 | # endif /* WIDE */ | |
97020474 | 47 | # include "bench-string.h" |
d183b96e SL |
48 | # ifndef WIDE |
49 | # define SIMPLE_STRNCPY simple_strncpy | |
50 | # define STUPID_STRNCPY stupid_strncpy | |
51 | # define STRNCPY strncpy | |
52 | # else | |
53 | # define SIMPLE_STRNCPY simple_wcsncpy | |
54 | # define STUPID_STRNCPY stupid_wcsncpy | |
55 | # define STRNCPY wcsncpy | |
56 | # endif /* WIDE */ | |
57 | ||
58 | CHAR *SIMPLE_STRNCPY (CHAR *, const CHAR *, size_t); | |
59 | CHAR *STUPID_STRNCPY (CHAR *, const CHAR *, size_t); | |
60 | ||
61 | IMPL (STUPID_STRNCPY, 0) | |
62 | IMPL (SIMPLE_STRNCPY, 0) | |
63 | IMPL (STRNCPY, 1) | |
64 | ||
65 | CHAR * | |
66 | SIMPLE_STRNCPY (CHAR *dst, const CHAR *src, size_t n) | |
97020474 | 67 | { |
d183b96e | 68 | CHAR *ret = dst; |
97020474 SP |
69 | while (n--) |
70 | if ((*dst++ = *src++) == '\0') | |
71 | { | |
72 | while (n--) | |
73 | *dst++ = '\0'; | |
74 | return ret; | |
75 | } | |
76 | return ret; | |
77 | } | |
78 | ||
d183b96e SL |
79 | CHAR * |
80 | STUPID_STRNCPY (CHAR *dst, const CHAR *src, size_t n) | |
97020474 | 81 | { |
d183b96e | 82 | size_t nc = STRNLEN (src, n); |
97020474 SP |
83 | size_t i; |
84 | ||
85 | for (i = 0; i < nc; ++i) | |
86 | dst[i] = src[i]; | |
87 | for (; i < n; ++i) | |
88 | dst[i] = '\0'; | |
89 | return dst; | |
90 | } | |
d183b96e | 91 | #endif /* !STRNCPY_RESULT */ |
97020474 | 92 | |
d183b96e | 93 | typedef CHAR *(*proto_t) (CHAR *, const CHAR *, size_t); |
97020474 SP |
94 | |
95 | static void | |
d183b96e | 96 | do_one_test (impl_t *impl, CHAR *dst, const CHAR *src, size_t len, size_t n) |
97020474 | 97 | { |
44558701 WN |
98 | size_t i, iters = INNER_LOOP_ITERS; |
99 | timing_t start, stop, cur; | |
100 | ||
97020474 SP |
101 | if (CALL (impl, dst, src, n) != STRNCPY_RESULT (dst, len, n)) |
102 | { | |
103 | error (0, 0, "Wrong result in function %s %p %p", impl->name, | |
104 | CALL (impl, dst, src, n), dst); | |
105 | ret = 1; | |
106 | return; | |
107 | } | |
108 | ||
d183b96e | 109 | if (memcmp (dst, src, (len > n ? n : len) * sizeof (CHAR)) != 0) |
97020474 SP |
110 | { |
111 | error (0, 0, "Wrong result in function %s", impl->name); | |
112 | ret = 1; | |
113 | return; | |
114 | } | |
115 | ||
116 | if (n > len) | |
117 | { | |
118 | size_t i; | |
119 | ||
120 | for (i = len; i < n; ++i) | |
121 | if (dst [i] != '\0') | |
122 | { | |
123 | error (0, 0, "Wrong result in function %s", impl->name); | |
124 | ret = 1; | |
125 | return; | |
126 | } | |
127 | } | |
128 | ||
44558701 WN |
129 | TIMING_NOW (start); |
130 | for (i = 0; i < iters; ++i) | |
97020474 | 131 | { |
44558701 WN |
132 | CALL (impl, dst, src, n); |
133 | } | |
134 | TIMING_NOW (stop); | |
97020474 | 135 | |
44558701 | 136 | TIMING_DIFF (cur, start, stop); |
97020474 | 137 | |
44558701 | 138 | TIMING_PRINT_MEAN ((double) cur, (double) iters); |
97020474 SP |
139 | } |
140 | ||
141 | static void | |
142 | do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char) | |
143 | { | |
144 | size_t i; | |
d183b96e | 145 | CHAR *s1, *s2; |
97020474 | 146 | |
d183b96e SL |
147 | /* For wcsncpy: align1 and align2 here mean alignment not in bytes, |
148 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)). */ | |
97020474 | 149 | align1 &= 7; |
d183b96e | 150 | if ((align1 + len) * sizeof (CHAR) >= page_size) |
97020474 SP |
151 | return; |
152 | ||
153 | align2 &= 7; | |
d183b96e | 154 | if ((align2 + len) * sizeof (CHAR) >= page_size) |
97020474 SP |
155 | return; |
156 | ||
d183b96e SL |
157 | s1 = (CHAR *) (buf1) + align1; |
158 | s2 = (CHAR *) (buf2) + align2; | |
97020474 SP |
159 | |
160 | for (i = 0; i < len; ++i) | |
161 | s1[i] = 32 + 23 * i % (max_char - 32); | |
162 | s1[len] = 0; | |
d183b96e SL |
163 | for (i = len + 1; (i + align1) * sizeof (CHAR) < page_size && i < len + 64; |
164 | ++i) | |
97020474 SP |
165 | s1[i] = 32 + 32 * i % (max_char - 32); |
166 | ||
44558701 | 167 | printf ("Length %4zd, n %4zd, alignment %2zd/%2zd:", len, n, align1, align2); |
97020474 SP |
168 | |
169 | FOR_EACH_IMPL (impl, 0) | |
170 | do_one_test (impl, s2, s1, len, n); | |
171 | ||
44558701 | 172 | putchar ('\n'); |
97020474 SP |
173 | } |
174 | ||
175 | int | |
176 | test_main (void) | |
177 | { | |
178 | size_t i; | |
179 | ||
180 | test_init (); | |
181 | ||
182 | printf ("%28s", ""); | |
183 | FOR_EACH_IMPL (impl, 0) | |
184 | printf ("\t%s", impl->name); | |
185 | putchar ('\n'); | |
186 | ||
187 | for (i = 1; i < 8; ++i) | |
188 | { | |
d183b96e SL |
189 | do_test (i, i, 16, 16, SMALL_CHAR); |
190 | do_test (i, i, 16, 16, BIG_CHAR); | |
191 | do_test (i, 2 * i, 16, 16, SMALL_CHAR); | |
192 | do_test (2 * i, i, 16, 16, BIG_CHAR); | |
193 | do_test (8 - i, 2 * i, 1 << i, 2 << i, SMALL_CHAR); | |
194 | do_test (2 * i, 8 - i, 2 << i, 1 << i, SMALL_CHAR); | |
195 | do_test (8 - i, 2 * i, 1 << i, 2 << i, BIG_CHAR); | |
196 | do_test (2 * i, 8 - i, 2 << i, 1 << i, BIG_CHAR); | |
97020474 SP |
197 | } |
198 | ||
199 | for (i = 1; i < 8; ++i) | |
200 | { | |
d183b96e SL |
201 | do_test (0, 0, 4 << i, 8 << i, SMALL_CHAR); |
202 | do_test (0, 0, 16 << i, 8 << i, SMALL_CHAR); | |
203 | do_test (8 - i, 2 * i, 4 << i, 8 << i, SMALL_CHAR); | |
204 | do_test (8 - i, 2 * i, 16 << i, 8 << i, SMALL_CHAR); | |
97020474 SP |
205 | } |
206 | ||
207 | return ret; | |
208 | } | |
209 | ||
210 | #include "../test-skeleton.c" |