1 | /* Measure strcpy functions. |
2 | Copyright (C) 2013-2022 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 | <https://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 (status: 0, errnum: 0, format: "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 (status: 0, errnum: 0, |
71 | format: "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 (format: "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, dst: s2, src: s1, len); |
117 | |
118 | putchar (c: '\n'); |
119 | } |
120 | |
121 | int |
122 | test_main (void) |
123 | { |
124 | size_t i; |
125 | |
126 | test_init (); |
127 | |
128 | printf (format: "%23s" , "" ); |
129 | FOR_EACH_IMPL (impl, 0) |
130 | printf (format: "\t%s" , impl->name); |
131 | putchar (c: '\n'); |
132 | |
133 | for (i = 0; i < 16; ++i) |
134 | { |
135 | do_test (align1: 0, align2: 0, len: i, SMALL_CHAR); |
136 | do_test (align1: 0, align2: 0, len: i, BIG_CHAR); |
137 | do_test (align1: 0, align2: i, len: i, SMALL_CHAR); |
138 | do_test (align1: i, align2: 0, len: i, BIG_CHAR); |
139 | } |
140 | |
141 | for (i = 1; i < 8; ++i) |
142 | { |
143 | do_test (align1: 0, align2: 0, len: 8 << i, SMALL_CHAR); |
144 | do_test (align1: 8 - i, align2: 2 * i, len: 8 << i, SMALL_CHAR); |
145 | } |
146 | |
147 | for (i = 1; i < 8; ++i) |
148 | { |
149 | do_test (align1: i, align2: 2 * i, len: 8 << i, SMALL_CHAR); |
150 | do_test (align1: 2 * i, align2: i, len: 8 << i, BIG_CHAR); |
151 | do_test (align1: i, align2: i, len: 8 << i, SMALL_CHAR); |
152 | do_test (align1: i, align2: i, len: 8 << i, BIG_CHAR); |
153 | } |
154 | |
155 | for (i = 16; i <= 512; i+=4) |
156 | { |
157 | do_test (align1: 0, align2: 4, len: i, SMALL_CHAR); |
158 | do_test (align1: 4, align2: 0, len: i, BIG_CHAR); |
159 | do_test (align1: 4, align2: 4, len: i, SMALL_CHAR); |
160 | do_test (align1: 2, align2: 2, len: i, BIG_CHAR); |
161 | do_test (align1: 2, align2: 6, len: i, SMALL_CHAR); |
162 | do_test (align1: 6, align2: 2, len: i, BIG_CHAR); |
163 | do_test (align1: 1, align2: 7, len: i, SMALL_CHAR); |
164 | do_test (align1: 7, align2: 1, len: i, BIG_CHAR); |
165 | do_test (align1: 3, align2: 4, len: i, SMALL_CHAR); |
166 | do_test (align1: 4, align2: 3, len: i, BIG_CHAR); |
167 | do_test (align1: 5, align2: 7, len: i, SMALL_CHAR); |
168 | do_test (align1: 7, align2: 5, len: i, SMALL_CHAR); |
169 | } |
170 | |
171 | return ret; |
172 | } |
173 | |
174 | #include <support/test-driver.c> |
175 | |