1 | /* Measure strtok 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 TEST_MAIN |
20 | #define TEST_NAME "strtok" |
21 | #include "bench-string.h" |
22 | |
23 | char * |
24 | oldstrtok (char *s, const char *delim) |
25 | { |
26 | static char *olds; |
27 | char *token; |
28 | |
29 | if (s == NULL) |
30 | s = olds; |
31 | |
32 | /* Scan leading delimiters. */ |
33 | s += strspn (s, delim); |
34 | if (*s == '\0') |
35 | { |
36 | olds = s; |
37 | return NULL; |
38 | } |
39 | |
40 | /* Find the end of the token. */ |
41 | token = s; |
42 | s = strpbrk (token, delim); |
43 | if (s == NULL) |
44 | /* This token finishes the string. */ |
45 | olds = rawmemchr (s: token, c: '\0'); |
46 | else |
47 | { |
48 | /* Terminate the token and make OLDS point past it. */ |
49 | *s = '\0'; |
50 | olds = s + 1; |
51 | } |
52 | return token; |
53 | } |
54 | |
55 | typedef char *(*proto_t) (const char *, const char *); |
56 | |
57 | IMPL (oldstrtok, 0) |
58 | IMPL (strtok, 1) |
59 | |
60 | static void |
61 | do_one_test (impl_t * impl, const char *s1, const char *s2) |
62 | { |
63 | size_t i, iters = INNER_LOOP_ITERS_SMALL; |
64 | timing_t start, stop, cur; |
65 | TIMING_NOW (start); |
66 | for (i = 0; i < iters; ++i) |
67 | { |
68 | CALL (impl, s1, s2); |
69 | CALL (impl, NULL, s2); |
70 | CALL (impl, NULL, s2); |
71 | } |
72 | TIMING_NOW (stop); |
73 | |
74 | TIMING_DIFF (cur, start, stop); |
75 | |
76 | TIMING_PRINT_MEAN ((double) cur, (double) iters); |
77 | |
78 | } |
79 | |
80 | |
81 | static void |
82 | do_test (size_t align1, size_t align2, size_t len1, size_t len2, int fail) |
83 | { |
84 | char *s2 = (char *) (buf2 + align2); |
85 | static const char d[] = "1234567890abcdef" ; |
86 | #define dl (sizeof (d) - 1) |
87 | char *ss2 = s2; |
88 | for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0) |
89 | { |
90 | size_t t = l > dl ? dl : l; |
91 | ss2 = mempcpy (ss2, d, t); |
92 | } |
93 | s2[len2] = '\0'; |
94 | |
95 | printf (format: "Length %4zd/%zd, alignment %2zd/%2zd, %s:" , |
96 | len1, len2, align1, align2, fail ? "fail" : "found" ); |
97 | |
98 | FOR_EACH_IMPL (impl, 0) |
99 | { |
100 | char *s1 = (char *) (buf1 + align1); |
101 | if (fail) |
102 | { |
103 | char *ss1 = s1; |
104 | for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0) |
105 | { |
106 | size_t t = l > dl ? dl : l; |
107 | memcpy (ss1, d, t); |
108 | ++ss1[len2 > 7 ? 7 : len2 - 1]; |
109 | ss1 += t; |
110 | } |
111 | } |
112 | else |
113 | { |
114 | memset (s1, '0', len1); |
115 | memcpy (s1 + (len1 - len2) - 2, s2, len2); |
116 | if ((len1 / len2) > 4) |
117 | memcpy (s1 + (len1 - len2) - (3 * len2), s2, len2); |
118 | } |
119 | s1[len1] = '\0'; |
120 | do_one_test (impl, s1, s2); |
121 | } |
122 | putchar (c: '\n'); |
123 | } |
124 | |
125 | static int |
126 | test_main (void) |
127 | { |
128 | test_init (); |
129 | |
130 | printf (format: "%23s" , "" ); |
131 | FOR_EACH_IMPL (impl, 0) |
132 | printf (format: "\t%s" , impl->name); |
133 | putchar (c: '\n'); |
134 | |
135 | for (size_t klen = 2; klen < 32; ++klen) |
136 | for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen) |
137 | { |
138 | do_test (align1: 0, align2: 0, len1: hlen, len2: klen, fail: 0); |
139 | do_test (align1: 0, align2: 0, len1: hlen, len2: klen, fail: 1); |
140 | do_test (align1: 0, align2: 3, len1: hlen, len2: klen, fail: 0); |
141 | do_test (align1: 0, align2: 3, len1: hlen, len2: klen, fail: 1); |
142 | do_test (align1: 0, align2: 9, len1: hlen, len2: klen, fail: 0); |
143 | do_test (align1: 0, align2: 9, len1: hlen, len2: klen, fail: 1); |
144 | do_test (align1: 0, align2: 15, len1: hlen, len2: klen, fail: 0); |
145 | do_test (align1: 0, align2: 15, len1: hlen, len2: klen, fail: 1); |
146 | |
147 | do_test (align1: 3, align2: 0, len1: hlen, len2: klen, fail: 0); |
148 | do_test (align1: 3, align2: 0, len1: hlen, len2: klen, fail: 1); |
149 | do_test (align1: 3, align2: 3, len1: hlen, len2: klen, fail: 0); |
150 | do_test (align1: 3, align2: 3, len1: hlen, len2: klen, fail: 1); |
151 | do_test (align1: 3, align2: 9, len1: hlen, len2: klen, fail: 0); |
152 | do_test (align1: 3, align2: 9, len1: hlen, len2: klen, fail: 1); |
153 | do_test (align1: 3, align2: 15, len1: hlen, len2: klen, fail: 0); |
154 | do_test (align1: 3, align2: 15, len1: hlen, len2: klen, fail: 1); |
155 | |
156 | do_test (align1: 9, align2: 0, len1: hlen, len2: klen, fail: 0); |
157 | do_test (align1: 9, align2: 0, len1: hlen, len2: klen, fail: 1); |
158 | do_test (align1: 9, align2: 3, len1: hlen, len2: klen, fail: 0); |
159 | do_test (align1: 9, align2: 3, len1: hlen, len2: klen, fail: 1); |
160 | do_test (align1: 9, align2: 9, len1: hlen, len2: klen, fail: 0); |
161 | do_test (align1: 9, align2: 9, len1: hlen, len2: klen, fail: 1); |
162 | do_test (align1: 9, align2: 15, len1: hlen, len2: klen, fail: 0); |
163 | do_test (align1: 9, align2: 15, len1: hlen, len2: klen, fail: 1); |
164 | |
165 | do_test (align1: 15, align2: 0, len1: hlen, len2: klen, fail: 0); |
166 | do_test (align1: 15, align2: 0, len1: hlen, len2: klen, fail: 1); |
167 | do_test (align1: 15, align2: 3, len1: hlen, len2: klen, fail: 0); |
168 | do_test (align1: 15, align2: 3, len1: hlen, len2: klen, fail: 1); |
169 | do_test (align1: 15, align2: 9, len1: hlen, len2: klen, fail: 0); |
170 | do_test (align1: 15, align2: 9, len1: hlen, len2: klen, fail: 1); |
171 | do_test (align1: 15, align2: 15, len1: hlen, len2: klen, fail: 0); |
172 | do_test (align1: 15, align2: 15, len1: hlen, len2: klen, fail: 1); |
173 | } |
174 | do_test (align1: 0, align2: 0, len1: page_size - 1, len2: 16, fail: 0); |
175 | do_test (align1: 0, align2: 0, len1: page_size - 1, len2: 16, fail: 1); |
176 | |
177 | return ret; |
178 | } |
179 | |
180 | #include <support/test-driver.c> |
181 | |