]>
Commit | Line | Data |
---|---|---|
dc98eeeb L |
1 | /* Measure bzero functions with large data sizes. |
2 | Copyright (C) 2022 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 TEST_MAIN | |
20 | #define TEST_NAME "bzero" | |
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 | ||
26 | #include "json-lib.h" | |
27 | ||
28 | static void | |
29 | memset_zero (void * s, size_t len) | |
30 | { | |
31 | memset (s, '\0', len); | |
32 | } | |
33 | ||
34 | typedef void (*proto_t) (void *, size_t); | |
35 | ||
36 | IMPL (bzero, 1) | |
37 | IMPL (memset_zero, 0) | |
38 | ||
39 | static void | |
40 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, size_t n) | |
41 | { | |
42 | size_t i, iters = 16; | |
43 | timing_t start, stop, cur; | |
44 | ||
45 | TIMING_NOW (start); | |
46 | for (i = 0; i < iters; ++i) | |
47 | { | |
48 | CALL (impl, s, n); | |
49 | } | |
50 | TIMING_NOW (stop); | |
51 | ||
52 | TIMING_DIFF (cur, start, stop); | |
53 | ||
54 | json_element_double (json_ctx, (double) cur / (double) iters); | |
55 | } | |
56 | ||
57 | static void | |
58 | do_test (json_ctx_t *json_ctx, size_t align, size_t len) | |
59 | { | |
60 | align &= 63; | |
61 | if ((align + len) * sizeof (CHAR) > page_size) | |
62 | return; | |
63 | ||
64 | json_element_object_begin (json_ctx); | |
65 | json_attr_uint (json_ctx, "length", len); | |
66 | json_attr_uint (json_ctx, "alignment", align); | |
67 | json_array_begin (json_ctx, "timings"); | |
68 | ||
69 | FOR_EACH_IMPL (impl, 0) | |
70 | { | |
71 | do_one_test (json_ctx, impl, (CHAR *) (buf1) + align, len); | |
72 | alloc_bufs (); | |
73 | } | |
74 | ||
75 | json_array_end (json_ctx); | |
76 | json_element_object_end (json_ctx); | |
77 | } | |
78 | ||
79 | int | |
80 | test_main (void) | |
81 | { | |
82 | json_ctx_t json_ctx; | |
83 | size_t i; | |
84 | ||
85 | test_init (); | |
86 | ||
87 | json_init (&json_ctx, 0, stdout); | |
88 | ||
89 | json_document_begin (&json_ctx); | |
90 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
91 | ||
92 | json_attr_object_begin (&json_ctx, "functions"); | |
93 | json_attr_object_begin (&json_ctx, TEST_NAME); | |
94 | json_attr_string (&json_ctx, "bench-variant", "large"); | |
95 | ||
96 | json_array_begin (&json_ctx, "ifuncs"); | |
97 | FOR_EACH_IMPL (impl, 0) | |
98 | json_element_string (&json_ctx, impl->name); | |
99 | json_array_end (&json_ctx); | |
100 | ||
101 | json_array_begin (&json_ctx, "results"); | |
102 | ||
103 | for (i = START_SIZE; i <= MIN_PAGE_SIZE; i <<= 1) | |
104 | { | |
105 | do_test (&json_ctx, 0, i); | |
106 | do_test (&json_ctx, 3, i); | |
107 | } | |
108 | ||
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 | ||
114 | return ret; | |
115 | } | |
116 | ||
117 | #include <support/test-driver.c> |