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97020474 | 1 | /* Measure memmove functions. |
dff8da6b | 2 | Copyright (C) 2013-2024 Free Software Foundation, Inc. |
97020474 SP |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
97020474 SP |
18 | |
19 | #define TEST_MAIN | |
16f87cfd | 20 | #define TEST_NAME "memmove" |
97020474 | 21 | #include "bench-string.h" |
86c6519e | 22 | #include "json-lib.h" |
97020474 | 23 | |
3c05dd79 | 24 | void *generic_memmove (void *, const void *, size_t); |
97020474 | 25 | |
3c05dd79 | 26 | typedef void *(*proto_t) (void *, const void *, size_t); |
97020474 | 27 | |
97020474 | 28 | IMPL (memmove, 1) |
3c05dd79 | 29 | IMPL (generic_memmove, 0) |
97020474 SP |
30 | |
31 | static void | |
24ca04fe SP |
32 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, char *dst, char *src, |
33 | size_t len) | |
97020474 | 34 | { |
44558701 WN |
35 | size_t i, iters = INNER_LOOP_ITERS; |
36 | timing_t start, stop, cur; | |
5e6cce9b NG |
37 | for (i = 0; i < iters / 64; ++i) |
38 | { | |
39 | CALL (impl, dst, src, len); | |
40 | } | |
44558701 WN |
41 | TIMING_NOW (start); |
42 | for (i = 0; i < iters; ++i) | |
97020474 | 43 | { |
44558701 | 44 | CALL (impl, dst, src, len); |
97020474 | 45 | } |
44558701 WN |
46 | TIMING_NOW (stop); |
47 | ||
48 | TIMING_DIFF (cur, start, stop); | |
49 | ||
86c6519e | 50 | json_element_double (json_ctx, (double) cur / (double) iters); |
97020474 SP |
51 | } |
52 | ||
53 | static void | |
86c6519e | 54 | do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len) |
97020474 SP |
55 | { |
56 | size_t i, j; | |
57 | char *s1, *s2; | |
58 | ||
5e6cce9b | 59 | align1 &= (getpagesize () - 1); |
97020474 SP |
60 | if (align1 + len >= page_size) |
61 | return; | |
62 | ||
5e6cce9b | 63 | align2 &= (getpagesize () - 1); |
97020474 SP |
64 | if (align2 + len >= page_size) |
65 | return; | |
66 | ||
24ca04fe | 67 | s1 = (char *) (buf2 + align1); |
97020474 SP |
68 | s2 = (char *) (buf2 + align2); |
69 | ||
70 | for (i = 0, j = 1; i < len; i++, j += 23) | |
71 | s1[i] = j; | |
72 | ||
86c6519e SP |
73 | json_element_object_begin (json_ctx); |
74 | json_attr_uint (json_ctx, "length", (double) len); | |
75 | json_attr_uint (json_ctx, "align1", (double) align1); | |
76 | json_attr_uint (json_ctx, "align2", (double) align2); | |
77 | json_array_begin (json_ctx, "timings"); | |
97020474 SP |
78 | |
79 | FOR_EACH_IMPL (impl, 0) | |
24ca04fe | 80 | do_one_test (json_ctx, impl, s2, s1, len); |
97020474 | 81 | |
86c6519e SP |
82 | json_array_end (json_ctx); |
83 | json_element_object_end (json_ctx); | |
97020474 SP |
84 | } |
85 | ||
b598e134 | 86 | static int |
97020474 SP |
87 | test_main (void) |
88 | { | |
86c6519e | 89 | json_ctx_t json_ctx; |
97020474 | 90 | size_t i; |
5e6cce9b | 91 | size_t half_page = getpagesize () / 2; |
97020474 SP |
92 | |
93 | test_init (); | |
94 | ||
86c6519e SP |
95 | json_init (&json_ctx, 0, stdout); |
96 | ||
97 | json_document_begin (&json_ctx); | |
98 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
99 | ||
100 | json_attr_object_begin (&json_ctx, "functions"); | |
101 | json_attr_object_begin (&json_ctx, "memmove"); | |
102 | json_attr_string (&json_ctx, "bench-variant", "default"); | |
103 | ||
104 | json_array_begin (&json_ctx, "ifuncs"); | |
105 | ||
97020474 | 106 | FOR_EACH_IMPL (impl, 0) |
86c6519e SP |
107 | json_element_string (&json_ctx, impl->name); |
108 | json_array_end (&json_ctx); | |
97020474 | 109 | |
86c6519e | 110 | json_array_begin (&json_ctx, "results"); |
97020474 SP |
111 | for (i = 0; i < 14; ++i) |
112 | { | |
86c6519e SP |
113 | do_test (&json_ctx, 0, 32, 1 << i); |
114 | do_test (&json_ctx, 32, 0, 1 << i); | |
115 | do_test (&json_ctx, 0, i, 1 << i); | |
116 | do_test (&json_ctx, i, 0, 1 << i); | |
97020474 SP |
117 | } |
118 | ||
119 | for (i = 0; i < 32; ++i) | |
120 | { | |
86c6519e SP |
121 | do_test (&json_ctx, 0, 32, i); |
122 | do_test (&json_ctx, 32, 0, i); | |
123 | do_test (&json_ctx, 0, i, i); | |
124 | do_test (&json_ctx, i, 0, i); | |
97020474 SP |
125 | } |
126 | ||
127 | for (i = 3; i < 32; ++i) | |
128 | { | |
129 | if ((i & (i - 1)) == 0) | |
130 | continue; | |
86c6519e SP |
131 | do_test (&json_ctx, 0, 32, 16 * i); |
132 | do_test (&json_ctx, 32, 0, 16 * i); | |
133 | do_test (&json_ctx, 0, i, 16 * i); | |
134 | do_test (&json_ctx, i, 0, 16 * i); | |
97020474 SP |
135 | } |
136 | ||
aea44bf6 L |
137 | for (i = 32; i < 64; ++i) |
138 | { | |
86c6519e SP |
139 | do_test (&json_ctx, 0, 0, 32 * i); |
140 | do_test (&json_ctx, i, 0, 32 * i); | |
141 | do_test (&json_ctx, 0, i, 32 * i); | |
142 | do_test (&json_ctx, i, i, 32 * i); | |
aea44bf6 L |
143 | } |
144 | ||
5e6cce9b NG |
145 | for (i = 0; i <= 48; ++i) |
146 | { | |
147 | do_test (&json_ctx, 0, 0, 2048 + 64 * i); | |
148 | do_test (&json_ctx, i, 0, 2048 + 64 * i); | |
149 | do_test (&json_ctx, 0, i, 2048 + 64 * i); | |
150 | do_test (&json_ctx, i, i, 2048 + 64 * i); | |
151 | do_test (&json_ctx, half_page, 0, 2048 + 64 * i); | |
152 | do_test (&json_ctx, 0, half_page, 2048 + 64 * i); | |
153 | do_test (&json_ctx, half_page + i, 0, 2048 + 64 * i); | |
154 | do_test (&json_ctx, i, half_page, 2048 + 64 * i); | |
155 | do_test (&json_ctx, half_page, i, 2048 + 64 * i); | |
156 | do_test (&json_ctx, 0, half_page + i, 2048 + 64 * i); | |
157 | do_test (&json_ctx, half_page + i, i, 2048 + 64 * i); | |
158 | do_test (&json_ctx, i, half_page + i, 2048 + 64 * i); | |
159 | } | |
160 | ||
86c6519e SP |
161 | json_array_end (&json_ctx); |
162 | json_attr_object_end (&json_ctx); | |
163 | json_attr_object_end (&json_ctx); | |
164 | json_document_end (&json_ctx); | |
165 | ||
97020474 SP |
166 | return ret; |
167 | } | |
168 | ||
b598e134 | 169 | #include <support/test-driver.c> |
3c05dd79 WD |
170 | |
171 | #define libc_hidden_builtin_def(X) | |
172 | #undef MEMMOVE | |
173 | #define MEMMOVE generic_memmove | |
174 | #include <string/memmove.c> | |
175 | #include <string/wordcopy.c> |