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97020474 | 1 | /* Measure strncat functions. |
bfff8b1b | 2 | Copyright (C) 2013-2017 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 | ||
19 | #define TEST_MAIN | |
e1fe9118 SL |
20 | #ifndef WIDE |
21 | # define TEST_NAME "strncat" | |
22 | #else | |
23 | # define TEST_NAME "wcsncat" | |
24 | #endif /* WIDE */ | |
97020474 SP |
25 | #include "bench-string.h" |
26 | ||
e1fe9118 SL |
27 | #ifndef WIDE |
28 | # define STRNCAT strncat | |
29 | # define CHAR char | |
30 | # define SIMPLE_STRNCAT simple_strncat | |
31 | # define STUPID_STRNCAT stupid_strncat | |
32 | # define STRLEN strlen | |
33 | # define MEMCMP memcmp | |
34 | # define BIG_CHAR CHAR_MAX | |
35 | # define SMALL_CHAR 127 | |
36 | #else | |
37 | # include <wchar.h> | |
38 | # define STRNCAT wcsncat | |
39 | # define CHAR wchar_t | |
40 | # define SIMPLE_STRNCAT simple_wcsncat | |
41 | # define STUPID_STRNCAT stupid_wcsncat | |
42 | # define STRLEN wcslen | |
43 | # define MEMCMP wmemcmp | |
44 | # define BIG_CHAR WCHAR_MAX | |
45 | # define SMALL_CHAR 1273 | |
46 | #endif /* WIDE */ | |
47 | ||
48 | typedef CHAR *(*proto_t) (CHAR *, const CHAR *, size_t); | |
49 | CHAR *STUPID_STRNCAT (CHAR *, const CHAR *, size_t); | |
50 | CHAR *SIMPLE_STRNCAT (CHAR *, const CHAR *, size_t); | |
51 | ||
52 | IMPL (STUPID_STRNCAT, 0) | |
53 | IMPL (STRNCAT, 2) | |
54 | ||
55 | CHAR * | |
56 | STUPID_STRNCAT (CHAR *dst, const CHAR *src, size_t n) | |
97020474 | 57 | { |
e1fe9118 | 58 | CHAR *ret = dst; |
97020474 SP |
59 | while (*dst++ != '\0'); |
60 | --dst; | |
61 | while (n--) | |
e1fe9118 | 62 | if ((*dst++ = *src++) == '\0') |
97020474 SP |
63 | return ret; |
64 | *dst = '\0'; | |
65 | return ret; | |
66 | } | |
67 | ||
68 | static void | |
e1fe9118 | 69 | do_one_test (impl_t *impl, CHAR *dst, const CHAR *src, size_t n) |
97020474 | 70 | { |
e1fe9118 | 71 | size_t k = STRLEN (dst), i, iters = INNER_LOOP_ITERS; |
44558701 WN |
72 | timing_t start, stop, cur; |
73 | ||
97020474 SP |
74 | if (CALL (impl, dst, src, n) != dst) |
75 | { | |
76 | error (0, 0, "Wrong result in function %s %p != %p", impl->name, | |
77 | CALL (impl, dst, src, n), dst); | |
78 | ret = 1; | |
79 | return; | |
80 | } | |
81 | ||
e1fe9118 SL |
82 | size_t len = STRLEN (src); |
83 | if (MEMCMP (dst + k, src, len + 1 > n ? n : len + 1) != 0) | |
97020474 | 84 | { |
e1fe9118 | 85 | error (0, 0, "Incorrect concatenation in function %s", |
97020474 SP |
86 | impl->name); |
87 | ret = 1; | |
88 | return; | |
89 | } | |
90 | if (n < len && dst[k + n] != '\0') | |
91 | { | |
92 | error (0, 0, "There is no zero in the end of output string in %s", | |
93 | impl->name); | |
94 | ret = 1; | |
95 | return; | |
96 | } | |
44558701 WN |
97 | |
98 | TIMING_NOW (start); | |
99 | for (i = 0; i < iters; ++i) | |
97020474 | 100 | { |
44558701 WN |
101 | dst[k] = '\0'; |
102 | CALL (impl, dst, src, n); | |
103 | } | |
104 | TIMING_NOW (stop); | |
97020474 | 105 | |
44558701 | 106 | TIMING_DIFF (cur, start, stop); |
97020474 | 107 | |
44558701 | 108 | TIMING_PRINT_MEAN ((double) cur, (double) iters); |
97020474 SP |
109 | } |
110 | ||
111 | static void | |
112 | do_test (size_t align1, size_t align2, size_t len1, size_t len2, | |
113 | size_t n, int max_char) | |
114 | { | |
115 | size_t i; | |
e1fe9118 | 116 | CHAR *s1, *s2; |
97020474 SP |
117 | |
118 | align1 &= 7; | |
e1fe9118 | 119 | if ((align1 + len1) * sizeof (CHAR) >= page_size) |
97020474 | 120 | return; |
e1fe9118 | 121 | if ((align1 + n) * sizeof (CHAR) > page_size) |
97020474 SP |
122 | return; |
123 | align2 &= 7; | |
e1fe9118 | 124 | if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size) |
97020474 | 125 | return; |
e1fe9118 | 126 | if ((align2 + len1 + n) * sizeof (CHAR) > page_size) |
97020474 | 127 | return; |
e1fe9118 SL |
128 | s1 = (CHAR *) (buf1) + align1; |
129 | s2 = (CHAR *) (buf2) + align2; | |
97020474 SP |
130 | |
131 | for (i = 0; i < len1; ++i) | |
132 | s1[i] = 32 + 23 * i % (max_char - 32); | |
133 | s1[len1] = '\0'; | |
134 | ||
135 | for (i = 0; i < len2; i++) | |
136 | s2[i] = 32 + 23 * i % (max_char - 32); | |
137 | ||
44558701 WN |
138 | printf ("Length %4zd/%4zd, alignment %2zd/%2zd, N %4zd:", |
139 | len1, len2, align1, align2, n); | |
97020474 SP |
140 | |
141 | FOR_EACH_IMPL (impl, 0) | |
142 | { | |
143 | s2[len2] = '\0'; | |
144 | do_one_test (impl, s2, s1, n); | |
145 | } | |
146 | ||
44558701 | 147 | putchar ('\n'); |
97020474 SP |
148 | } |
149 | ||
150 | int | |
151 | main (void) | |
152 | { | |
153 | size_t i, n; | |
154 | ||
155 | test_init (); | |
156 | ||
157 | printf ("%28s", ""); | |
158 | FOR_EACH_IMPL (impl, 0) | |
159 | printf ("\t%s", impl->name); | |
160 | putchar ('\n'); | |
161 | ||
162 | for (n = 2; n <= 2048; n*=4) | |
163 | { | |
e1fe9118 SL |
164 | do_test (0, 2, 2, 2, n, SMALL_CHAR); |
165 | do_test (0, 0, 4, 4, n, SMALL_CHAR); | |
166 | do_test (4, 0, 4, 4, n, BIG_CHAR); | |
167 | do_test (0, 0, 8, 8, n, SMALL_CHAR); | |
168 | do_test (0, 8, 8, 8, n, SMALL_CHAR); | |
97020474 SP |
169 | |
170 | for (i = 1; i < 8; ++i) | |
171 | { | |
e1fe9118 SL |
172 | do_test (0, 0, 8 << i, 8 << i, n, SMALL_CHAR); |
173 | do_test (8 - i, 2 * i, 8 << i, 8 << i, n, SMALL_CHAR); | |
174 | do_test (0, 0, 8 << i, 2 << i, n, SMALL_CHAR); | |
175 | do_test (8 - i, 2 * i, 8 << i, 2 << i, n, SMALL_CHAR); | |
97020474 SP |
176 | } |
177 | ||
178 | for (i = 1; i < 8; ++i) | |
179 | { | |
e1fe9118 SL |
180 | do_test (i, 2 * i, 8 << i, 1, n, SMALL_CHAR); |
181 | do_test (2 * i, i, 8 << i, 1, n, BIG_CHAR); | |
182 | do_test (i, i, 8 << i, 10, n, SMALL_CHAR); | |
97020474 SP |
183 | } |
184 | } | |
185 | ||
186 | return ret; | |
187 | } |