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1 | /* Measure strcpy functions. | |
2 | Copyright (C) 2013-2019 Free Software Foundation, Inc. | |
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 BIG_CHAR MAX_CHAR | |
20 | ||
21 | #ifdef WIDE | |
22 | # define sfmt "ls" | |
23 | # define SMALL_CHAR 1273 | |
24 | #else | |
25 | # define sfmt "s" | |
26 | # define SMALL_CHAR 127 | |
27 | #endif | |
28 | ||
29 | #ifndef STRCPY_RESULT | |
30 | # define STRCPY_RESULT(dst, len) dst | |
31 | # define TEST_MAIN | |
32 | # ifndef WIDE | |
33 | # define TEST_NAME "strcpy" | |
34 | # else | |
35 | # define TEST_NAME "wcscpy" | |
36 | # define generic_strcpy generic_wcscpy | |
37 | # endif | |
38 | #include "bench-string.h" | |
39 | ||
40 | CHAR * | |
41 | generic_strcpy (CHAR *dst, const CHAR *src) | |
42 | { | |
43 | return MEMCPY (dst, src, STRLEN (src) + 1); | |
44 | } | |
45 | ||
46 | IMPL (STRCPY, 1) | |
47 | IMPL (generic_strcpy, 0) | |
48 | ||
49 | #endif | |
50 | ||
51 | typedef CHAR *(*proto_t) (CHAR *, const CHAR *); | |
52 | ||
53 | static void | |
54 | do_one_test (impl_t *impl, CHAR *dst, const CHAR *src, | |
55 | size_t len __attribute__((unused))) | |
56 | { | |
57 | size_t i, iters = INNER_LOOP_ITERS; | |
58 | timing_t start, stop, cur; | |
59 | ||
60 | if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len)) | |
61 | { | |
62 | error (0, 0, "Wrong result in function %s %p %p", impl->name, | |
63 | CALL (impl, dst, src), STRCPY_RESULT (dst, len)); | |
64 | ret = 1; | |
65 | return; | |
66 | } | |
67 | ||
68 | if (STRCMP (dst, src) != 0) | |
69 | { | |
70 | error (0, 0, | |
71 | "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"", | |
72 | impl->name, dst, src); | |
73 | ret = 1; | |
74 | return; | |
75 | } | |
76 | ||
77 | TIMING_NOW (start); | |
78 | for (i = 0; i < iters; ++i) | |
79 | { | |
80 | CALL (impl, dst, src); | |
81 | } | |
82 | TIMING_NOW (stop); | |
83 | ||
84 | TIMING_DIFF (cur, start, stop); | |
85 | ||
86 | TIMING_PRINT_MEAN ((double) cur, (double) iters); | |
87 | } | |
88 | ||
89 | static void | |
90 | do_test (size_t align1, size_t align2, size_t len, int max_char) | |
91 | { | |
92 | size_t i; | |
93 | CHAR *s1, *s2; | |
94 | /* For wcscpy: align1 and align2 here mean alignment not in bytes, | |
95 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) | |
96 | len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ | |
97 | align1 &= 7; | |
98 | if ((align1 + len) * sizeof (CHAR) >= page_size) | |
99 | return; | |
100 | ||
101 | align2 &= 7; | |
102 | if ((align2 + len) * sizeof (CHAR) >= page_size) | |
103 | return; | |
104 | ||
105 | s1 = (CHAR *) (buf1) + align1; | |
106 | s2 = (CHAR *) (buf2) + align2; | |
107 | ||
108 | for (i = 0; i < len; i++) | |
109 | s1[i] = 32 + 23 * i % (max_char - 32); | |
110 | s1[len] = 0; | |
111 | ||
112 | printf ("Length %4zd, alignments in bytes %2zd/%2zd:", len, | |
113 | align1 * sizeof (CHAR), align2 * sizeof (CHAR)); | |
114 | ||
115 | FOR_EACH_IMPL (impl, 0) | |
116 | do_one_test (impl, s2, s1, len); | |
117 | ||
118 | putchar ('\n'); | |
119 | } | |
120 | ||
121 | int | |
122 | test_main (void) | |
123 | { | |
124 | size_t i; | |
125 | ||
126 | test_init (); | |
127 | ||
128 | printf ("%23s", ""); | |
129 | FOR_EACH_IMPL (impl, 0) | |
130 | printf ("\t%s", impl->name); | |
131 | putchar ('\n'); | |
132 | ||
133 | for (i = 0; i < 16; ++i) | |
134 | { | |
135 | do_test (0, 0, i, SMALL_CHAR); | |
136 | do_test (0, 0, i, BIG_CHAR); | |
137 | do_test (0, i, i, SMALL_CHAR); | |
138 | do_test (i, 0, i, BIG_CHAR); | |
139 | } | |
140 | ||
141 | for (i = 1; i < 8; ++i) | |
142 | { | |
143 | do_test (0, 0, 8 << i, SMALL_CHAR); | |
144 | do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR); | |
145 | } | |
146 | ||
147 | for (i = 1; i < 8; ++i) | |
148 | { | |
149 | do_test (i, 2 * i, 8 << i, SMALL_CHAR); | |
150 | do_test (2 * i, i, 8 << i, BIG_CHAR); | |
151 | do_test (i, i, 8 << i, SMALL_CHAR); | |
152 | do_test (i, i, 8 << i, BIG_CHAR); | |
153 | } | |
154 | ||
155 | for (i = 16; i <= 512; i+=4) | |
156 | { | |
157 | do_test (0, 4, i, SMALL_CHAR); | |
158 | do_test (4, 0, i, BIG_CHAR); | |
159 | do_test (4, 4, i, SMALL_CHAR); | |
160 | do_test (2, 2, i, BIG_CHAR); | |
161 | do_test (2, 6, i, SMALL_CHAR); | |
162 | do_test (6, 2, i, BIG_CHAR); | |
163 | do_test (1, 7, i, SMALL_CHAR); | |
164 | do_test (7, 1, i, BIG_CHAR); | |
165 | do_test (3, 4, i, SMALL_CHAR); | |
166 | do_test (4, 3, i, BIG_CHAR); | |
167 | do_test (5, 7, i, SMALL_CHAR); | |
168 | do_test (7, 5, i, SMALL_CHAR); | |
169 | } | |
170 | ||
171 | return ret; | |
172 | } | |
173 | ||
174 | #include <support/test-driver.c> |