1/* Measure strcpy 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 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#include "json-lib.h"
30
31#ifndef STRCPY_RESULT
32# define STRCPY_RESULT(dst, len) dst
33# define TEST_MAIN
34# ifndef WIDE
35# define TEST_NAME "strcpy"
36# else
37# define TEST_NAME "wcscpy"
38# define generic_strcpy generic_wcscpy
39# endif
40# include "bench-string.h"
41
42CHAR *
43generic_strcpy (CHAR *dst, const CHAR *src)
44{
45 return MEMCPY (dst, src, STRLEN (src) + 1);
46}
47
48IMPL (STRCPY, 1)
49IMPL (generic_strcpy, 0)
50
51#endif
52
53typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
54
55static void
56do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *dst, const CHAR *src,
57 size_t len __attribute__ ((unused)))
58{
59 size_t i, iters = INNER_LOOP_ITERS;
60 timing_t start, stop, cur;
61
62 if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
63 {
64 error (status: 0, errnum: 0, format: "Wrong result in function %s %p %p", impl->name,
65 CALL (impl, dst, src), STRCPY_RESULT (dst, len));
66 ret = 1;
67 return;
68 }
69
70 if (STRCMP (dst, src) != 0)
71 {
72 error (status: 0, errnum: 0,
73 format: "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
74 impl->name, dst, src);
75 ret = 1;
76 return;
77 }
78
79 TIMING_NOW (start);
80 for (i = 0; i < iters; ++i)
81 {
82 CALL (impl, dst, src);
83 }
84 TIMING_NOW (stop);
85
86 TIMING_DIFF (cur, start, stop);
87
88 json_element_double (ctx: json_ctx, d: (double) cur / (double) iters);
89}
90
91static void
92do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len,
93 int max_char)
94{
95 size_t i;
96 CHAR *s1, *s2;
97 /* For wcscpy: align1 and align2 here mean alignment not in bytes,
98 but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
99 len for wcschr here isn't in bytes but it's number of wchar_t symbols. */
100 align1 &= 7;
101 if ((align1 + len) * sizeof (CHAR) >= page_size)
102 return;
103
104 align2 &= 7;
105 if ((align2 + len) * sizeof (CHAR) >= page_size)
106 return;
107
108 s1 = (CHAR *) (buf1) + align1;
109 s2 = (CHAR *) (buf2) + align2;
110
111 for (i = 0; i < len; i++)
112 s1[i] = 32 + 23 * i % (max_char - 32);
113 s1[len] = 0;
114
115 json_element_object_begin (ctx: json_ctx);
116 json_attr_uint (ctx: json_ctx, name: "align1", d: align1);
117 json_attr_uint (ctx: json_ctx, name: "align2", d: align2);
118 json_attr_uint (ctx: json_ctx, name: "len", d: len);
119 json_attr_uint (ctx: json_ctx, name: "max_char", d: max_char);
120
121 json_array_begin (ctx: json_ctx, name: "timings");
122
123 FOR_EACH_IMPL (impl, 0)
124 do_one_test (json_ctx, impl, dst: s2, src: s1, len);
125
126 json_array_end (ctx: json_ctx);
127 json_element_object_end (ctx: json_ctx);
128}
129
130int
131test_main (void)
132{
133 json_ctx_t json_ctx;
134 size_t i;
135
136 test_init ();
137
138 json_init (ctx: &json_ctx, indent_level: 0, stdout);
139
140 json_document_begin (ctx: &json_ctx);
141 json_attr_string (ctx: &json_ctx, name: "timing_type", TIMING_TYPE);
142
143 json_attr_object_begin (ctx: &json_ctx, name: "functions");
144 json_attr_object_begin (ctx: &json_ctx, TEST_NAME);
145 json_attr_string (ctx: &json_ctx, name: "bench-variant", s: "");
146
147 json_array_begin (ctx: &json_ctx, name: "ifuncs");
148 FOR_EACH_IMPL (impl, 0)
149 json_element_string (ctx: &json_ctx, s: impl->name);
150 json_array_end (ctx: &json_ctx);
151
152 json_array_begin (ctx: &json_ctx, name: "results");
153
154 for (i = 0; i < 16; ++i)
155 {
156 do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len: i, SMALL_CHAR);
157 do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len: i, BIG_CHAR);
158 do_test (json_ctx: &json_ctx, align1: 0, align2: i, len: i, SMALL_CHAR);
159 do_test (json_ctx: &json_ctx, align1: i, align2: 0, len: i, BIG_CHAR);
160 }
161
162 for (i = 1; i < 8; ++i)
163 {
164 do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len: 8 << i, SMALL_CHAR);
165 do_test (json_ctx: &json_ctx, align1: 8 - i, align2: 2 * i, len: 8 << i, SMALL_CHAR);
166 }
167
168 for (i = 1; i < 8; ++i)
169 {
170 do_test (json_ctx: &json_ctx, align1: i, align2: 2 * i, len: 8 << i, SMALL_CHAR);
171 do_test (json_ctx: &json_ctx, align1: 2 * i, align2: i, len: 8 << i, BIG_CHAR);
172 do_test (json_ctx: &json_ctx, align1: i, align2: i, len: 8 << i, SMALL_CHAR);
173 do_test (json_ctx: &json_ctx, align1: i, align2: i, len: 8 << i, BIG_CHAR);
174 }
175
176 for (i = 16; i <= 512; i += 4)
177 {
178 do_test (json_ctx: &json_ctx, align1: 0, align2: 4, len: i, SMALL_CHAR);
179 do_test (json_ctx: &json_ctx, align1: 4, align2: 0, len: i, BIG_CHAR);
180 do_test (json_ctx: &json_ctx, align1: 4, align2: 4, len: i, SMALL_CHAR);
181 do_test (json_ctx: &json_ctx, align1: 2, align2: 2, len: i, BIG_CHAR);
182 do_test (json_ctx: &json_ctx, align1: 2, align2: 6, len: i, SMALL_CHAR);
183 do_test (json_ctx: &json_ctx, align1: 6, align2: 2, len: i, BIG_CHAR);
184 do_test (json_ctx: &json_ctx, align1: 1, align2: 7, len: i, SMALL_CHAR);
185 do_test (json_ctx: &json_ctx, align1: 7, align2: 1, len: i, BIG_CHAR);
186 do_test (json_ctx: &json_ctx, align1: 3, align2: 4, len: i, SMALL_CHAR);
187 do_test (json_ctx: &json_ctx, align1: 4, align2: 3, len: i, BIG_CHAR);
188 do_test (json_ctx: &json_ctx, align1: 5, align2: 7, len: i, SMALL_CHAR);
189 do_test (json_ctx: &json_ctx, align1: 7, align2: 5, len: i, SMALL_CHAR);
190 }
191
192 for (i = 1; i < 2048; i += i)
193 {
194 do_test (json_ctx: &json_ctx, align1: 1, align2: 0, len: i, SMALL_CHAR);
195 do_test (json_ctx: &json_ctx, align1: 0, align2: i, len: i, SMALL_CHAR);
196 do_test (json_ctx: &json_ctx, align1: 0, align2: 0, len: i, SMALL_CHAR);
197 do_test (json_ctx: &json_ctx, align1: i, align2: i, len: i, SMALL_CHAR);
198 }
199
200 json_array_end (ctx: &json_ctx);
201 json_attr_object_end (ctx: &json_ctx);
202 json_attr_object_end (ctx: &json_ctx);
203 json_document_end (ctx: &json_ctx);
204
205 return ret;
206}
207
208#include <support/test-driver.c>
209

source code of glibc/benchtests/bench-strcpy.c