1 | /* Measure strsep functions. |
2 | Copyright (C) 2013-2024 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 "strsep" |
21 | #include "bench-string.h" |
22 | |
23 | typedef char *(*proto_t) (const char **, const char *); |
24 | |
25 | IMPL (strsep, 1) |
26 | |
27 | static void |
28 | do_one_test (impl_t * impl, const char *s1, const char *s2) |
29 | { |
30 | size_t i, iters = INNER_LOOP_ITERS; |
31 | timing_t start, stop, cur; |
32 | |
33 | TIMING_NOW (start); |
34 | for (i = 0; i < iters; ++i) |
35 | { |
36 | const char *s1a = s1; |
37 | CALL (impl, &s1a, s2); |
38 | if (s1a != NULL) |
39 | ((char*)s1a)[-1] = '1'; |
40 | } |
41 | TIMING_NOW (stop); |
42 | |
43 | TIMING_DIFF (cur, start, stop); |
44 | |
45 | TIMING_PRINT_MEAN ((double) cur, (double) iters); |
46 | } |
47 | |
48 | static void |
49 | do_test (size_t align1, size_t align2, size_t len1, size_t len2, int fail) |
50 | { |
51 | char *s2 = (char *) (buf2 + align2); |
52 | |
53 | /* Search for a delimiter in a string containing mostly '0', so don't |
54 | use '0' as a delimiter. */ |
55 | static const char d[] = "123456789abcdefg" ; |
56 | #define dl (sizeof (d) - 1) |
57 | char *ss2 = s2; |
58 | for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0) |
59 | { |
60 | size_t t = l > dl ? dl : l; |
61 | ss2 = mempcpy (ss2, d, t); |
62 | } |
63 | s2[len2] = '\0'; |
64 | |
65 | printf (format: "Length %4zd/%zd, alignment %2zd/%2zd, %s:" , |
66 | len1, len2, align1, align2, fail ? "fail" : "found" ); |
67 | |
68 | FOR_EACH_IMPL (impl, 0) |
69 | { |
70 | char *s1 = (char *) (buf1 + align1); |
71 | memset (s1, '0', len1); |
72 | if (!fail) |
73 | s1[len1 / 2] = '1'; |
74 | s1[len1] = '\0'; |
75 | do_one_test (impl, s1, s2); |
76 | } |
77 | putchar (c: '\n'); |
78 | } |
79 | |
80 | static int |
81 | test_main (void) |
82 | { |
83 | test_init (); |
84 | |
85 | printf (format: "%23s" , "" ); |
86 | FOR_EACH_IMPL (impl, 0) |
87 | printf (format: "\t%s" , impl->name); |
88 | putchar (c: '\n'); |
89 | |
90 | for (size_t klen = 2; klen < 32; ++klen) |
91 | for (size_t hlen = 4 * klen; hlen < 8 * klen; hlen += klen) |
92 | { |
93 | do_test (align1: 0, align2: 0, len1: hlen, len2: klen, fail: 0); |
94 | do_test (align1: 0, align2: 0, len1: hlen, len2: klen, fail: 1); |
95 | do_test (align1: 0, align2: 3, len1: hlen, len2: klen, fail: 0); |
96 | do_test (align1: 0, align2: 3, len1: hlen, len2: klen, fail: 1); |
97 | do_test (align1: 0, align2: 9, len1: hlen, len2: klen, fail: 0); |
98 | do_test (align1: 0, align2: 9, len1: hlen, len2: klen, fail: 1); |
99 | do_test (align1: 0, align2: 15, len1: hlen, len2: klen, fail: 0); |
100 | do_test (align1: 0, align2: 15, len1: hlen, len2: klen, fail: 1); |
101 | |
102 | do_test (align1: 3, align2: 0, len1: hlen, len2: klen, fail: 0); |
103 | do_test (align1: 3, align2: 0, len1: hlen, len2: klen, fail: 1); |
104 | do_test (align1: 3, align2: 3, len1: hlen, len2: klen, fail: 0); |
105 | do_test (align1: 3, align2: 3, len1: hlen, len2: klen, fail: 1); |
106 | do_test (align1: 3, align2: 9, len1: hlen, len2: klen, fail: 0); |
107 | do_test (align1: 3, align2: 9, len1: hlen, len2: klen, fail: 1); |
108 | do_test (align1: 3, align2: 15, len1: hlen, len2: klen, fail: 0); |
109 | do_test (align1: 3, align2: 15, len1: hlen, len2: klen, fail: 1); |
110 | |
111 | do_test (align1: 9, align2: 0, len1: hlen, len2: klen, fail: 0); |
112 | do_test (align1: 9, align2: 0, len1: hlen, len2: klen, fail: 1); |
113 | do_test (align1: 9, align2: 3, len1: hlen, len2: klen, fail: 0); |
114 | do_test (align1: 9, align2: 3, len1: hlen, len2: klen, fail: 1); |
115 | do_test (align1: 9, align2: 9, len1: hlen, len2: klen, fail: 0); |
116 | do_test (align1: 9, align2: 9, len1: hlen, len2: klen, fail: 1); |
117 | do_test (align1: 9, align2: 15, len1: hlen, len2: klen, fail: 0); |
118 | do_test (align1: 9, align2: 15, len1: hlen, len2: klen, fail: 1); |
119 | |
120 | do_test (align1: 15, align2: 0, len1: hlen, len2: klen, fail: 0); |
121 | do_test (align1: 15, align2: 0, len1: hlen, len2: klen, fail: 1); |
122 | do_test (align1: 15, align2: 3, len1: hlen, len2: klen, fail: 0); |
123 | do_test (align1: 15, align2: 3, len1: hlen, len2: klen, fail: 1); |
124 | do_test (align1: 15, align2: 9, len1: hlen, len2: klen, fail: 0); |
125 | do_test (align1: 15, align2: 9, len1: hlen, len2: klen, fail: 1); |
126 | do_test (align1: 15, align2: 15, len1: hlen, len2: klen, fail: 0); |
127 | do_test (align1: 15, align2: 15, len1: hlen, len2: klen, fail: 1); |
128 | } |
129 | do_test (align1: 0, align2: 0, len1: page_size - 1, len2: 16, fail: 0); |
130 | do_test (align1: 0, align2: 0, len1: page_size - 1, len2: 16, fail: 1); |
131 | |
132 | return ret; |
133 | } |
134 | |
135 | #include <support/test-driver.c> |
136 | |