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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 | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #define TEST_MAIN | |
20 | #ifndef WIDE | |
21 | # define TEST_NAME "memset" | |
22 | #else | |
23 | # define TEST_NAME "wmemset" | |
24 | #endif /* WIDE */ | |
25 | #define START_SIZE (128 * 1024) | |
26 | #define MIN_PAGE_SIZE (getpagesize () + 64 * 1024 * 1024) | |
27 | #define TIMEOUT (20 * 60) | |
28 | #include "bench-string.h" | |
29 | ||
30 | #ifndef WIDE | |
a25322f4 | 31 | # define SIMPLE_MEMSET simple_memset |
a25322f4 | 32 | #else |
a25322f4 | 33 | # define SIMPLE_MEMSET simple_wmemset |
a25322f4 L |
34 | #endif /* WIDE */ |
35 | ||
36 | #include <assert.h> | |
29c933fb | 37 | #include "json-lib.h" |
a25322f4 L |
38 | |
39 | IMPL (MEMSET, 1) | |
40 | ||
41 | typedef CHAR *(*proto_t) (CHAR *, int, size_t); | |
42 | ||
43 | CHAR * | |
44 | inhibit_loop_to_libcall | |
45 | SIMPLE_MEMSET (CHAR *s, int c, size_t n) | |
46 | { | |
47 | CHAR *r = s, *end = s + n; | |
48 | while (r < end) | |
49 | *r++ = c; | |
50 | return s; | |
51 | } | |
52 | ||
53 | static void | |
29c933fb SP |
54 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, |
55 | int c __attribute ((unused)), size_t n) | |
a25322f4 L |
56 | { |
57 | size_t i, iters = 16; | |
58 | timing_t start, stop, cur; | |
a25322f4 L |
59 | |
60 | TIMING_NOW (start); | |
61 | for (i = 0; i < iters; ++i) | |
62 | { | |
63 | CALL (impl, s, c, n); | |
64 | } | |
65 | TIMING_NOW (stop); | |
66 | ||
67 | TIMING_DIFF (cur, start, stop); | |
68 | ||
29c933fb | 69 | json_element_double (json_ctx, (double) cur / (double) iters); |
a25322f4 L |
70 | } |
71 | ||
72 | static void | |
29c933fb | 73 | do_test (json_ctx_t *json_ctx, size_t align, int c, size_t len) |
a25322f4 L |
74 | { |
75 | align &= 63; | |
76 | if ((align + len) * sizeof (CHAR) > page_size) | |
77 | return; | |
78 | ||
29c933fb SP |
79 | json_element_object_begin (json_ctx); |
80 | json_attr_uint (json_ctx, "length", len); | |
81 | json_attr_uint (json_ctx, "alignment", align); | |
82 | json_attr_int (json_ctx, "char", c); | |
83 | json_array_begin (json_ctx, "timings"); | |
a25322f4 L |
84 | |
85 | FOR_EACH_IMPL (impl, 0) | |
503c92c3 SP |
86 | { |
87 | do_one_test (json_ctx, impl, (CHAR *) (buf1) + align, c, len); | |
014efdd7 | 88 | alloc_bufs (); |
503c92c3 | 89 | } |
a25322f4 | 90 | |
29c933fb SP |
91 | json_array_end (json_ctx); |
92 | json_element_object_end (json_ctx); | |
a25322f4 L |
93 | } |
94 | ||
95 | int | |
96 | test_main (void) | |
97 | { | |
29c933fb | 98 | json_ctx_t json_ctx; |
a25322f4 L |
99 | size_t i; |
100 | int c; | |
101 | ||
102 | test_init (); | |
103 | ||
29c933fb SP |
104 | json_init (&json_ctx, 0, stdout); |
105 | ||
106 | json_document_begin (&json_ctx); | |
107 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
108 | ||
109 | json_attr_object_begin (&json_ctx, "functions"); | |
110 | json_attr_object_begin (&json_ctx, TEST_NAME); | |
111 | json_attr_string (&json_ctx, "bench-variant", "large"); | |
112 | ||
113 | json_array_begin (&json_ctx, "ifuncs"); | |
a25322f4 | 114 | FOR_EACH_IMPL (impl, 0) |
29c933fb SP |
115 | json_element_string (&json_ctx, impl->name); |
116 | json_array_end (&json_ctx); | |
117 | ||
118 | json_array_begin (&json_ctx, "results"); | |
a25322f4 L |
119 | |
120 | c = 65; | |
121 | for (i = START_SIZE; i <= MIN_PAGE_SIZE; i <<= 1) | |
122 | { | |
29c933fb SP |
123 | do_test (&json_ctx, 0, c, i); |
124 | do_test (&json_ctx, 3, c, i); | |
a25322f4 L |
125 | } |
126 | ||
29c933fb SP |
127 | json_array_end (&json_ctx); |
128 | json_attr_object_end (&json_ctx); | |
129 | json_attr_object_end (&json_ctx); | |
130 | json_document_end (&json_ctx); | |
131 | ||
a25322f4 L |
132 | return ret; |
133 | } | |
134 | ||
b598e134 | 135 | #include <support/test-driver.c> |