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a25322f4 | 1 | /* Measure memset functions with large data sizes. |
04277e02 | 2 | Copyright (C) 2016-2019 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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
a25322f4 L |
18 | |
19 | #define TEST_MAIN | |
3c05dd79 | 20 | #define TEST_NAME "memset" |
a25322f4 L |
21 | #define START_SIZE (128 * 1024) |
22 | #define MIN_PAGE_SIZE (getpagesize () + 64 * 1024 * 1024) | |
23 | #define TIMEOUT (20 * 60) | |
24 | #include "bench-string.h" | |
25 | ||
a25322f4 | 26 | #include <assert.h> |
29c933fb | 27 | #include "json-lib.h" |
a25322f4 | 28 | |
3c05dd79 WD |
29 | void *generic_memset (void *, int, size_t); |
30 | typedef void *(*proto_t) (void *, int, size_t); | |
a25322f4 | 31 | |
3c05dd79 WD |
32 | IMPL (MEMSET, 1) |
33 | IMPL (generic_memset, 0) | |
a25322f4 L |
34 | |
35 | static void | |
29c933fb SP |
36 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, |
37 | int c __attribute ((unused)), size_t n) | |
a25322f4 L |
38 | { |
39 | size_t i, iters = 16; | |
40 | timing_t start, stop, cur; | |
a25322f4 L |
41 | |
42 | TIMING_NOW (start); | |
43 | for (i = 0; i < iters; ++i) | |
44 | { | |
45 | CALL (impl, s, c, n); | |
46 | } | |
47 | TIMING_NOW (stop); | |
48 | ||
49 | TIMING_DIFF (cur, start, stop); | |
50 | ||
29c933fb | 51 | json_element_double (json_ctx, (double) cur / (double) iters); |
a25322f4 L |
52 | } |
53 | ||
54 | static void | |
29c933fb | 55 | do_test (json_ctx_t *json_ctx, size_t align, int c, size_t len) |
a25322f4 L |
56 | { |
57 | align &= 63; | |
58 | if ((align + len) * sizeof (CHAR) > page_size) | |
59 | return; | |
60 | ||
29c933fb SP |
61 | json_element_object_begin (json_ctx); |
62 | json_attr_uint (json_ctx, "length", len); | |
63 | json_attr_uint (json_ctx, "alignment", align); | |
64 | json_attr_int (json_ctx, "char", c); | |
65 | json_array_begin (json_ctx, "timings"); | |
a25322f4 L |
66 | |
67 | FOR_EACH_IMPL (impl, 0) | |
503c92c3 SP |
68 | { |
69 | do_one_test (json_ctx, impl, (CHAR *) (buf1) + align, c, len); | |
014efdd7 | 70 | alloc_bufs (); |
503c92c3 | 71 | } |
a25322f4 | 72 | |
29c933fb SP |
73 | json_array_end (json_ctx); |
74 | json_element_object_end (json_ctx); | |
a25322f4 L |
75 | } |
76 | ||
77 | int | |
78 | test_main (void) | |
79 | { | |
29c933fb | 80 | json_ctx_t json_ctx; |
a25322f4 L |
81 | size_t i; |
82 | int c; | |
83 | ||
84 | test_init (); | |
85 | ||
29c933fb SP |
86 | json_init (&json_ctx, 0, stdout); |
87 | ||
88 | json_document_begin (&json_ctx); | |
89 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
90 | ||
91 | json_attr_object_begin (&json_ctx, "functions"); | |
92 | json_attr_object_begin (&json_ctx, TEST_NAME); | |
93 | json_attr_string (&json_ctx, "bench-variant", "large"); | |
94 | ||
95 | json_array_begin (&json_ctx, "ifuncs"); | |
a25322f4 | 96 | FOR_EACH_IMPL (impl, 0) |
29c933fb SP |
97 | json_element_string (&json_ctx, impl->name); |
98 | json_array_end (&json_ctx); | |
99 | ||
100 | json_array_begin (&json_ctx, "results"); | |
a25322f4 L |
101 | |
102 | c = 65; | |
103 | for (i = START_SIZE; i <= MIN_PAGE_SIZE; i <<= 1) | |
104 | { | |
29c933fb SP |
105 | do_test (&json_ctx, 0, c, i); |
106 | do_test (&json_ctx, 3, c, i); | |
a25322f4 L |
107 | } |
108 | ||
29c933fb SP |
109 | json_array_end (&json_ctx); |
110 | json_attr_object_end (&json_ctx); | |
111 | json_attr_object_end (&json_ctx); | |
112 | json_document_end (&json_ctx); | |
113 | ||
a25322f4 L |
114 | return ret; |
115 | } | |
116 | ||
b598e134 | 117 | #include <support/test-driver.c> |
3c05dd79 WD |
118 | |
119 | #define libc_hidden_builtin_def(X) | |
120 | #define libc_hidden_def(X) | |
121 | #define libc_hidden_weak(X) | |
122 | #define weak_alias(X,Y) | |
123 | #undef MEMSET | |
124 | #define MEMSET generic_memset | |
125 | #include <string/memset.c> |