1 | /* Measure strncat 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 | #ifndef WIDE |
21 | # define TEST_NAME "strncat" |
22 | #else |
23 | # define TEST_NAME "wcsncat" |
24 | # define generic_strncat generic_wcsncat |
25 | #endif /* WIDE */ |
26 | #include "bench-string.h" |
27 | |
28 | #define BIG_CHAR MAX_CHAR |
29 | |
30 | #ifndef WIDE |
31 | # define SMALL_CHAR 127 |
32 | #else |
33 | # define SMALL_CHAR 1273 |
34 | #endif /* WIDE */ |
35 | |
36 | #include "json-lib.h" |
37 | |
38 | typedef CHAR *(*proto_t) (CHAR *, const CHAR *, size_t); |
39 | |
40 | CHAR * |
41 | generic_strncat (CHAR *dst, const CHAR *src, size_t n) |
42 | { |
43 | CHAR *end = dst + STRLEN (dst); |
44 | n = STRNLEN (src, n); |
45 | end[n] = 0; |
46 | MEMCPY (end, src, n); |
47 | return dst; |
48 | } |
49 | |
50 | IMPL (STRNCAT, 2) |
51 | IMPL (generic_strncat, 0) |
52 | |
53 | static void |
54 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *dst, const CHAR *src, |
55 | size_t n) |
56 | { |
57 | size_t k = STRLEN (dst), i, iters = INNER_LOOP_ITERS8; |
58 | timing_t start, stop, cur; |
59 | |
60 | if (CALL (impl, dst, src, n) != dst) |
61 | { |
62 | error (status: 0, errnum: 0, format: "Wrong result in function %s %p != %p" , impl->name, |
63 | CALL (impl, dst, src, n), dst); |
64 | ret = 1; |
65 | return; |
66 | } |
67 | |
68 | size_t len = STRLEN (src); |
69 | if (MEMCMP (dst + k, src, len + 1 > n ? n : len + 1) != 0) |
70 | { |
71 | error (status: 0, errnum: 0, format: "Incorrect concatenation in function %s" , impl->name); |
72 | ret = 1; |
73 | return; |
74 | } |
75 | if (n < len && dst[k + n] != '\0') |
76 | { |
77 | error (status: 0, errnum: 0, format: "There is no zero in the end of output string in %s" , |
78 | impl->name); |
79 | ret = 1; |
80 | return; |
81 | } |
82 | |
83 | TIMING_NOW (start); |
84 | for (i = 0; i < iters; ++i) |
85 | { |
86 | dst[k] = '\0'; |
87 | CALL (impl, dst, src, n); |
88 | } |
89 | TIMING_NOW (stop); |
90 | |
91 | TIMING_DIFF (cur, start, stop); |
92 | |
93 | json_element_double (ctx: json_ctx, d: (double) cur / (double) iters); |
94 | } |
95 | |
96 | static void |
97 | do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len1, |
98 | size_t len2, size_t n, int max_char) |
99 | { |
100 | size_t i; |
101 | CHAR *s1, *s2; |
102 | |
103 | align1 &= 7; |
104 | if ((align1 + len1) * sizeof (CHAR) >= page_size) |
105 | return; |
106 | if ((align1 + n) * sizeof (CHAR) > page_size) |
107 | return; |
108 | align2 &= 7; |
109 | if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size) |
110 | return; |
111 | if ((align2 + len1 + n) * sizeof (CHAR) > page_size) |
112 | return; |
113 | s1 = (CHAR *) (buf1) + align1; |
114 | s2 = (CHAR *) (buf2) + align2; |
115 | |
116 | for (i = 0; i < len1; ++i) |
117 | s1[i] = 32 + 23 * i % (max_char - 32); |
118 | s1[len1] = '\0'; |
119 | |
120 | for (i = 0; i < len2; i++) |
121 | s2[i] = 32 + 23 * i % (max_char - 32); |
122 | |
123 | json_element_object_begin (ctx: json_ctx); |
124 | json_attr_uint (ctx: json_ctx, name: "align1" , d: align1); |
125 | json_attr_uint (ctx: json_ctx, name: "align2" , d: align2); |
126 | json_attr_uint (ctx: json_ctx, name: "len1" , d: len1); |
127 | json_attr_uint (ctx: json_ctx, name: "len2" , d: len2); |
128 | json_attr_uint (ctx: json_ctx, name: "n" , d: n); |
129 | json_attr_uint (ctx: json_ctx, name: "max_char" , d: max_char); |
130 | |
131 | json_array_begin (ctx: json_ctx, name: "timings" ); |
132 | |
133 | FOR_EACH_IMPL (impl, 0) |
134 | { |
135 | s2[len2] = '\0'; |
136 | do_one_test (json_ctx, impl, dst: s2, src: s1, n); |
137 | } |
138 | |
139 | json_array_end (ctx: json_ctx); |
140 | json_element_object_end (ctx: json_ctx); |
141 | } |
142 | |
143 | int |
144 | main (void) |
145 | { |
146 | json_ctx_t json_ctx; |
147 | size_t i, n; |
148 | |
149 | test_init (); |
150 | |
151 | json_init (ctx: &json_ctx, indent_level: 0, stdout); |
152 | |
153 | json_document_begin (ctx: &json_ctx); |
154 | json_attr_string (ctx: &json_ctx, name: "timing_type" , TIMING_TYPE); |
155 | |
156 | json_attr_object_begin (ctx: &json_ctx, name: "functions" ); |
157 | json_attr_object_begin (ctx: &json_ctx, TEST_NAME); |
158 | json_attr_string (ctx: &json_ctx, name: "bench-variant" , s: "" ); |
159 | |
160 | json_array_begin (ctx: &json_ctx, name: "ifuncs" ); |
161 | FOR_EACH_IMPL (impl, 0) |
162 | json_element_string (ctx: &json_ctx, s: impl->name); |
163 | json_array_end (ctx: &json_ctx); |
164 | |
165 | json_array_begin (ctx: &json_ctx, name: "results" ); |
166 | |
167 | for (n = 2; n <= 2048; n *= 4) |
168 | { |
169 | do_test (json_ctx: &json_ctx, align1: 0, align2: 2, len1: 2, len2: 2, n, SMALL_CHAR); |
170 | do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len1: 4, len2: 4, n, SMALL_CHAR); |
171 | do_test (json_ctx: &json_ctx, align1: 4, align2: 0, len1: 4, len2: 4, n, BIG_CHAR); |
172 | do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len1: 8, len2: 8, n, SMALL_CHAR); |
173 | do_test (json_ctx: &json_ctx, align1: 0, align2: 8, len1: 8, len2: 8, n, SMALL_CHAR); |
174 | |
175 | for (i = 1; i < 8; ++i) |
176 | { |
177 | do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len1: 8 << i, len2: 8 << i, n, SMALL_CHAR); |
178 | do_test (json_ctx: &json_ctx, align1: 8 - i, align2: 2 * i, len1: 8 << i, len2: 8 << i, n, SMALL_CHAR); |
179 | do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len1: 8 << i, len2: 2 << i, n, SMALL_CHAR); |
180 | do_test (json_ctx: &json_ctx, align1: 8 - i, align2: 2 * i, len1: 8 << i, len2: 2 << i, n, SMALL_CHAR); |
181 | } |
182 | |
183 | for (i = 1; i < 8; ++i) |
184 | { |
185 | do_test (json_ctx: &json_ctx, align1: i, align2: 2 * i, len1: 8 << i, len2: 1, n, SMALL_CHAR); |
186 | do_test (json_ctx: &json_ctx, align1: 2 * i, align2: i, len1: 8 << i, len2: 1, n, BIG_CHAR); |
187 | do_test (json_ctx: &json_ctx, align1: i, align2: i, len1: 8 << i, len2: 10, n, SMALL_CHAR); |
188 | } |
189 | } |
190 | |
191 | for (i = 128; i < 2048; i += i) |
192 | { |
193 | for (n = i - 64; n <= i + 64; n += 32) |
194 | { |
195 | do_test (json_ctx: &json_ctx, align1: 1, align2: 0, len1: i, len2: i, n, SMALL_CHAR); |
196 | do_test (json_ctx: &json_ctx, align1: 0, align2: i, len1: i, len2: i, n, SMALL_CHAR); |
197 | do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len1: i, len2: i, n, SMALL_CHAR); |
198 | do_test (json_ctx: &json_ctx, align1: i, align2: i, len1: i, len2: i, n, SMALL_CHAR); |
199 | do_test (json_ctx: &json_ctx, align1: 1, align2: 0, len1: i, len2: n, n: i, SMALL_CHAR); |
200 | do_test (json_ctx: &json_ctx, align1: 0, align2: i, len1: i, len2: n, n: i, SMALL_CHAR); |
201 | do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len1: i, len2: n, n: i, SMALL_CHAR); |
202 | do_test (json_ctx: &json_ctx, align1: i, align2: i, len1: i, len2: n, n: i, SMALL_CHAR); |
203 | } |
204 | } |
205 | |
206 | json_array_end (ctx: &json_ctx); |
207 | json_attr_object_end (ctx: &json_ctx); |
208 | json_attr_object_end (ctx: &json_ctx); |
209 | json_document_end (ctx: &json_ctx); |
210 | |
211 | return ret; |
212 | } |
213 | |