1 | /* Measure STRCHR 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 | #ifdef WIDE |
21 | # define TEST_NAME "wcsrchr" |
22 | #else |
23 | # define TEST_NAME "strrchr" |
24 | #endif |
25 | #include "bench-string.h" |
26 | #include "json-lib.h" |
27 | |
28 | #define BIG_CHAR MAX_CHAR |
29 | |
30 | #ifdef WIDE |
31 | # define SMALL_CHAR 1273 |
32 | #else |
33 | # define SMALL_CHAR 127 |
34 | |
35 | char * |
36 | generic_strrchr (const char *, int); |
37 | |
38 | IMPL (generic_strrchr, 0) |
39 | |
40 | #endif |
41 | |
42 | typedef CHAR *(*proto_t) (const CHAR *, int); |
43 | |
44 | IMPL (STRRCHR, 1) |
45 | |
46 | static void |
47 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s, int c, |
48 | CHAR *exp_res) |
49 | { |
50 | CHAR *res = CALL (impl, s, c); |
51 | size_t i, iters = INNER_LOOP_ITERS8; |
52 | timing_t start, stop, cur; |
53 | |
54 | if (res != exp_res) |
55 | { |
56 | error (status: 0, errnum: 0, format: "Wrong result in function %s %p %p" , impl->name, res, |
57 | exp_res); |
58 | ret = 1; |
59 | return; |
60 | } |
61 | |
62 | TIMING_NOW (start); |
63 | for (i = 0; i < iters; ++i) |
64 | { |
65 | CALL (impl, s, c); |
66 | } |
67 | TIMING_NOW (stop); |
68 | TIMING_DIFF (cur, start, stop); |
69 | |
70 | json_element_double (ctx: json_ctx, d: (double) cur / (double) iters); |
71 | } |
72 | |
73 | static void |
74 | do_test (json_ctx_t *json_ctx, size_t align, size_t pos, size_t len, |
75 | int seek_char, int max_char, size_t freq) |
76 | /* For wcsrchr: align here means align not in bytes, |
77 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) |
78 | len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ |
79 | { |
80 | size_t i; |
81 | size_t pos_chunk_sz = freq ? (pos / freq) : pos; |
82 | size_t last_pos = len; |
83 | CHAR *result; |
84 | CHAR *buf = (CHAR *) buf1; |
85 | |
86 | align &= (getpagesize () - 1); |
87 | if ((align + len) * sizeof (CHAR) >= page_size) |
88 | return; |
89 | |
90 | for (i = 0; i < len; ++i) |
91 | { |
92 | buf[align + i] = (random () * random ()) & max_char; |
93 | if (!buf[align + i]) |
94 | buf[align + i] = (random () * random ()) & max_char; |
95 | if (!buf[align + i]) |
96 | buf[align + i] = 1; |
97 | if ((i > pos || pos >= len) && buf[align + i] == seek_char) |
98 | buf[align + i] = seek_char + 10 + (random () & 15); |
99 | } |
100 | |
101 | if (pos_chunk_sz == 0 && pos) |
102 | pos_chunk_sz = 1; |
103 | |
104 | for (i = pos_chunk_sz; i < pos && i < len; i += pos_chunk_sz) |
105 | { |
106 | buf[align + i] = seek_char; |
107 | last_pos = i; |
108 | } |
109 | |
110 | buf[align + len] = 0; |
111 | |
112 | if (pos < len) |
113 | { |
114 | buf[align + pos] = seek_char; |
115 | result = (CHAR *) (buf + align + pos); |
116 | } |
117 | else if (last_pos < len) |
118 | result = (CHAR *) (buf + align + last_pos); |
119 | else if (seek_char == 0) |
120 | result = (CHAR *) (buf + align + len); |
121 | else |
122 | result = NULL; |
123 | |
124 | json_element_object_begin (ctx: json_ctx); |
125 | json_attr_uint (ctx: json_ctx, name: "len" , d: len); |
126 | json_attr_uint (ctx: json_ctx, name: "pos" , d: pos); |
127 | json_attr_uint (ctx: json_ctx, name: "align" , d: align); |
128 | json_attr_uint (ctx: json_ctx, name: "freq" , d: freq); |
129 | json_attr_uint (ctx: json_ctx, name: "seek" , d: seek_char); |
130 | json_attr_uint (ctx: json_ctx, name: "max_char" , d: max_char); |
131 | json_array_begin (ctx: json_ctx, name: "timings" ); |
132 | |
133 | FOR_EACH_IMPL (impl, 0) |
134 | do_one_test (json_ctx, impl, s: (CHAR *) (buf + align), c: seek_char, exp_res: result); |
135 | |
136 | json_array_end (ctx: json_ctx); |
137 | json_element_object_end (ctx: json_ctx); |
138 | } |
139 | |
140 | int |
141 | test_main (void) |
142 | { |
143 | json_ctx_t json_ctx; |
144 | size_t i, j, k; |
145 | int seek; |
146 | |
147 | test_init (); |
148 | json_init (ctx: &json_ctx, indent_level: 0, stdout); |
149 | |
150 | json_document_begin (ctx: &json_ctx); |
151 | json_attr_string (ctx: &json_ctx, name: "timing_type" , TIMING_TYPE); |
152 | |
153 | json_attr_object_begin (ctx: &json_ctx, name: "functions" ); |
154 | json_attr_object_begin (ctx: &json_ctx, TEST_NAME); |
155 | json_attr_string (ctx: &json_ctx, name: "bench-variant" , s: "" ); |
156 | |
157 | json_array_begin (ctx: &json_ctx, name: "ifuncs" ); |
158 | FOR_EACH_IMPL (impl, 0) |
159 | json_element_string (ctx: &json_ctx, s: impl->name); |
160 | json_array_end (ctx: &json_ctx); |
161 | |
162 | json_array_begin (ctx: &json_ctx, name: "results" ); |
163 | |
164 | for (seek = 0; seek <= 23; seek += 23) |
165 | { |
166 | for (j = 1; j <= 256; j = (j * 4)) |
167 | { |
168 | for (i = 1; i < 9; ++i) |
169 | { |
170 | do_test (json_ctx: &json_ctx, align: 0, pos: 16 << i, len: 2048, seek_char: seek, SMALL_CHAR, freq: j); |
171 | do_test (json_ctx: &json_ctx, align: i, pos: 16 << i, len: 2048, seek_char: seek, SMALL_CHAR, freq: j); |
172 | } |
173 | |
174 | for (i = 1; i < 8; ++i) |
175 | { |
176 | do_test (json_ctx: &json_ctx, align: i, pos: 64, len: 256, seek_char: seek, SMALL_CHAR, freq: j); |
177 | do_test (json_ctx: &json_ctx, align: i, pos: 64, len: 256, seek_char: seek, BIG_CHAR, freq: j); |
178 | |
179 | do_test (json_ctx: &json_ctx, align: i * 15, pos: 64, len: 256, seek_char: seek, SMALL_CHAR, freq: j); |
180 | do_test (json_ctx: &json_ctx, align: i * 15, pos: 64, len: 256, seek_char: seek, BIG_CHAR, freq: j); |
181 | } |
182 | |
183 | for (i = 0; i < 32; ++i) |
184 | { |
185 | do_test (json_ctx: &json_ctx, align: 0, pos: i, len: i + 1, seek_char: seek, SMALL_CHAR, freq: j); |
186 | do_test (json_ctx: &json_ctx, align: 0, pos: i, len: i + 1, seek_char: seek, BIG_CHAR, freq: j); |
187 | do_test (json_ctx: &json_ctx, align: getpagesize () - i / 2 - 1, pos: i, len: i + 1, seek_char: seek, |
188 | SMALL_CHAR, freq: j); |
189 | } |
190 | |
191 | for (i = (16 / sizeof (CHAR)); i <= (288 / sizeof (CHAR)); i += 32) |
192 | { |
193 | do_test (json_ctx: &json_ctx, align: 0, pos: i - 16, len: i, seek_char: seek, SMALL_CHAR, freq: j); |
194 | do_test (json_ctx: &json_ctx, align: 0, pos: i, len: i + 16, seek_char: seek, SMALL_CHAR, freq: j); |
195 | } |
196 | |
197 | for (i = (16 / sizeof (CHAR)); i <= (2048 / sizeof (CHAR)); i += i) |
198 | { |
199 | for (k = 0; k <= (288 / sizeof (CHAR)); |
200 | k += (48 / sizeof (CHAR))) |
201 | { |
202 | do_test (json_ctx: &json_ctx, align: 0, pos: k, len: i, seek_char: seek, SMALL_CHAR, freq: j); |
203 | do_test (json_ctx: &json_ctx, align: 0, pos: i, len: i + k, seek_char: seek, SMALL_CHAR, freq: j); |
204 | |
205 | if (k < i) |
206 | { |
207 | do_test (json_ctx: &json_ctx, align: 0, pos: i - k, len: i, seek_char: seek, SMALL_CHAR, freq: j); |
208 | do_test (json_ctx: &json_ctx, align: 0, pos: k, len: i - k, seek_char: seek, SMALL_CHAR, freq: j); |
209 | do_test (json_ctx: &json_ctx, align: 0, pos: i, len: i - k, seek_char: seek, SMALL_CHAR, freq: j); |
210 | } |
211 | } |
212 | } |
213 | |
214 | if (seek == 0) |
215 | { |
216 | break; |
217 | } |
218 | } |
219 | } |
220 | |
221 | json_array_end (ctx: &json_ctx); |
222 | json_attr_object_end (ctx: &json_ctx); |
223 | json_attr_object_end (ctx: &json_ctx); |
224 | json_document_end (ctx: &json_ctx); |
225 | |
226 | return ret; |
227 | } |
228 | |
229 | #include <support/test-driver.c> |
230 | |
231 | #define weak_alias(X,Y) |
232 | #define libc_hidden_builtin_def(X) |
233 | #ifndef WIDE |
234 | # undef STRRCHR |
235 | # define STRRCHR generic_strrchr |
236 | # define __memrchr memrchr |
237 | # include <string/strrchr.c> |
238 | #endif |
239 | |