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a25322f4 | 1 | /* Measure memmove functions with large data sizes. |
688903eb | 2 | Copyright (C) 2016-2018 Free Software Foundation, Inc. |
a25322f4 L |
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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #define BASE_PAGE_SIZE (1024 * 1024) | |
20 | #define START_SIZE (4 * 1024) | |
21 | #define MIN_PAGE_SIZE (getpagesize () + 16 * 1024 * 1024) | |
22 | #define TEST_MAIN | |
23 | #define TEST_NAME "memmove" | |
24 | #define TIMEOUT (20 * 60) | |
25 | #include "bench-string.h" | |
86c6519e | 26 | #include "json-lib.h" |
a25322f4 L |
27 | |
28 | IMPL (memmove, 1) | |
29 | ||
30 | typedef char *(*proto_t) (char *, const char *, size_t); | |
31 | ||
32 | static void | |
86c6519e SP |
33 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, char *dst, char *src, const |
34 | char *orig_src, size_t len) | |
a25322f4 L |
35 | { |
36 | size_t i, iters = 16; | |
37 | timing_t start, stop, cur; | |
38 | ||
a25322f4 L |
39 | TIMING_NOW (start); |
40 | for (i = 0; i < iters; ++i) | |
41 | { | |
42 | CALL (impl, dst, src, len); | |
43 | } | |
44 | TIMING_NOW (stop); | |
45 | ||
46 | TIMING_DIFF (cur, start, stop); | |
47 | ||
86c6519e | 48 | json_element_double (json_ctx, (double) cur / (double) iters); |
a25322f4 L |
49 | } |
50 | ||
51 | static void | |
86c6519e | 52 | do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len) |
a25322f4 L |
53 | { |
54 | size_t i, j; | |
55 | char *s1, *s2; | |
56 | ||
57 | align1 &= 127; | |
58 | if (align1 + len >= page_size) | |
59 | return; | |
60 | ||
61 | align2 &= 127; | |
62 | if (align2 + len >= page_size) | |
63 | return; | |
64 | ||
65 | s1 = (char *) (buf1 + align1); | |
66 | s2 = (char *) (buf2 + align2); | |
67 | ||
68 | for (i = 0, j = 1; i < len; i++, j += 23) | |
69 | s1[i] = j; | |
70 | ||
86c6519e SP |
71 | json_element_object_begin (json_ctx); |
72 | json_attr_uint (json_ctx, "length", (double) len); | |
73 | json_attr_uint (json_ctx, "align1", (double) align1); | |
74 | json_attr_uint (json_ctx, "align2", (double) align2); | |
75 | json_array_begin (json_ctx, "timings"); | |
a25322f4 L |
76 | |
77 | FOR_EACH_IMPL (impl, 0) | |
86c6519e | 78 | do_one_test (json_ctx, impl, s2, (char *) (buf2 + align1), s1, len); |
a25322f4 | 79 | |
86c6519e SP |
80 | json_array_end (json_ctx); |
81 | json_element_object_end (json_ctx); | |
a25322f4 L |
82 | } |
83 | ||
84 | int | |
85 | test_main (void) | |
86 | { | |
86c6519e | 87 | json_ctx_t json_ctx; |
a25322f4 L |
88 | size_t i; |
89 | ||
90 | test_init (); | |
91 | ||
86c6519e SP |
92 | json_init (&json_ctx, 0, stdout); |
93 | ||
94 | json_document_begin (&json_ctx); | |
95 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
96 | ||
97 | json_attr_object_begin (&json_ctx, "functions"); | |
98 | json_attr_object_begin (&json_ctx, "memmove"); | |
99 | json_attr_string (&json_ctx, "bench-variant", "large"); | |
100 | ||
101 | json_array_begin (&json_ctx, "ifuncs"); | |
102 | ||
a25322f4 | 103 | FOR_EACH_IMPL (impl, 0) |
86c6519e SP |
104 | json_element_string (&json_ctx, impl->name); |
105 | json_array_end (&json_ctx); | |
a25322f4 | 106 | |
86c6519e | 107 | json_array_begin (&json_ctx, "results"); |
a25322f4 L |
108 | for (i = START_SIZE; i <= MIN_PAGE_SIZE; i <<= 1) |
109 | { | |
86c6519e SP |
110 | do_test (&json_ctx, 0, 64, i + 7); |
111 | do_test (&json_ctx, 0, 3, i + 15); | |
112 | do_test (&json_ctx, 3, 0, i + 31); | |
113 | do_test (&json_ctx, 3, 7, i + 63); | |
114 | do_test (&json_ctx, 9, 5, i + 127); | |
a25322f4 L |
115 | } |
116 | ||
86c6519e SP |
117 | json_array_end (&json_ctx); |
118 | json_attr_object_end (&json_ctx); | |
119 | json_attr_object_end (&json_ctx); | |
120 | json_document_end (&json_ctx); | |
121 | ||
a25322f4 L |
122 | return ret; |
123 | } | |
124 | ||
b598e134 | 125 | #include <support/test-driver.c> |