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97020474 | 1 | /* Measure STRLEN functions. |
688903eb | 2 | Copyright (C) 2013-2018 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 | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #define TEST_MAIN | |
20 | #ifndef WIDE | |
21 | # define TEST_NAME "strlen" | |
22 | #else | |
23 | # define TEST_NAME "wcslen" | |
24 | #endif | |
25 | #include "bench-string.h" | |
26 | ||
27 | #ifndef WIDE | |
28 | # define STRLEN strlen | |
29 | # define CHAR char | |
30 | # define MAX_CHAR CHAR_MAX | |
31 | #else | |
32 | # include <wchar.h> | |
33 | # define STRLEN wcslen | |
34 | # define CHAR wchar_t | |
35 | # define MAX_CHAR WCHAR_MAX | |
36 | #endif | |
37 | ||
953a5a4a SP |
38 | #include "json-lib.h" |
39 | ||
97020474 SP |
40 | typedef size_t (*proto_t) (const CHAR *); |
41 | ||
42 | size_t | |
43 | simple_STRLEN (const CHAR *s) | |
44 | { | |
45 | const CHAR *p; | |
46 | ||
47 | for (p = s; *p; ++p); | |
48 | return p - s; | |
49 | } | |
50 | ||
51 | #ifndef WIDE | |
52 | size_t | |
53 | builtin_strlen (const CHAR *p) | |
54 | { | |
55 | return __builtin_strlen (p); | |
56 | } | |
57 | IMPL (builtin_strlen, 0) | |
58 | #endif | |
59 | ||
60 | IMPL (simple_STRLEN, 0) | |
61 | IMPL (STRLEN, 1) | |
62 | ||
63 | ||
64 | static void | |
953a5a4a | 65 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s, size_t exp_len) |
97020474 | 66 | { |
44558701 WN |
67 | size_t len = CALL (impl, s), i, iters = INNER_LOOP_ITERS; |
68 | timing_t start, stop, cur; | |
69 | ||
97020474 SP |
70 | if (len != exp_len) |
71 | { | |
72 | error (0, 0, "Wrong result in function %s %zd %zd", impl->name, | |
73 | len, exp_len); | |
74 | ret = 1; | |
75 | return; | |
76 | } | |
77 | ||
44558701 WN |
78 | TIMING_NOW (start); |
79 | for (i = 0; i < iters; ++i) | |
97020474 | 80 | { |
44558701 | 81 | CALL (impl, s); |
97020474 | 82 | } |
44558701 WN |
83 | TIMING_NOW (stop); |
84 | ||
85 | TIMING_DIFF (cur, start, stop); | |
86 | ||
953a5a4a | 87 | json_element_double (json_ctx, (double) cur / (double) iters); |
97020474 SP |
88 | } |
89 | ||
90 | static void | |
953a5a4a | 91 | do_test (json_ctx_t *json_ctx, size_t align, size_t len) |
97020474 SP |
92 | { |
93 | size_t i; | |
94 | ||
95 | align &= 63; | |
96 | if (align + sizeof(CHAR) * len >= page_size) | |
97 | return; | |
98 | ||
953a5a4a SP |
99 | json_element_object_begin (json_ctx); |
100 | json_attr_uint (json_ctx, "length", len); | |
101 | json_attr_uint (json_ctx, "alignment", align); | |
102 | json_array_begin (json_ctx, "timings"); | |
103 | ||
97020474 SP |
104 | |
105 | FOR_EACH_IMPL (impl, 0) | |
34f86d61 SP |
106 | { |
107 | CHAR *buf = (CHAR *) (buf1); | |
108 | ||
109 | for (i = 0; i < len; ++i) | |
110 | buf[align + i] = 1 + 11111 * i % MAX_CHAR; | |
111 | buf[align + len] = 0; | |
112 | ||
113 | do_one_test (json_ctx, impl, (CHAR *) (buf + align), len); | |
114 | alloc_bufs (); | |
115 | } | |
97020474 | 116 | |
953a5a4a SP |
117 | json_array_end (json_ctx); |
118 | json_element_object_end (json_ctx); | |
97020474 SP |
119 | } |
120 | ||
121 | int | |
122 | test_main (void) | |
123 | { | |
953a5a4a | 124 | json_ctx_t json_ctx; |
97020474 SP |
125 | size_t i; |
126 | ||
127 | test_init (); | |
128 | ||
953a5a4a SP |
129 | json_init (&json_ctx, 0, stdout); |
130 | ||
131 | json_document_begin (&json_ctx); | |
132 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
133 | ||
134 | json_attr_object_begin (&json_ctx, "functions"); | |
135 | json_attr_object_begin (&json_ctx, TEST_NAME); | |
136 | json_attr_string (&json_ctx, "bench-variant", ""); | |
137 | ||
138 | json_array_begin (&json_ctx, "ifuncs"); | |
97020474 | 139 | FOR_EACH_IMPL (impl, 0) |
953a5a4a SP |
140 | json_element_string (&json_ctx, impl->name); |
141 | json_array_end (&json_ctx); | |
97020474 | 142 | |
953a5a4a | 143 | json_array_begin (&json_ctx, "results"); |
97020474 SP |
144 | /* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/ |
145 | ||
146 | for (i = 1; i < 8; ++i) | |
147 | { | |
953a5a4a SP |
148 | do_test (&json_ctx, sizeof(CHAR) * i, i); |
149 | do_test (&json_ctx, 0, i); | |
97020474 SP |
150 | } |
151 | ||
152 | for (i = 2; i <= 12; ++i) | |
153 | { | |
953a5a4a SP |
154 | do_test (&json_ctx, 0, 1 << i); |
155 | do_test (&json_ctx, sizeof(CHAR) * 7, 1 << i); | |
156 | do_test (&json_ctx, sizeof(CHAR) * i, 1 << i); | |
157 | do_test (&json_ctx, sizeof(CHAR) * i, (size_t)((1 << i) / 1.5)); | |
97020474 SP |
158 | } |
159 | ||
953a5a4a SP |
160 | json_array_end (&json_ctx); |
161 | json_attr_object_end (&json_ctx); | |
162 | json_attr_object_end (&json_ctx); | |
163 | json_document_end (&json_ctx); | |
164 | ||
97020474 SP |
165 | return ret; |
166 | } | |
167 | ||
b598e134 | 168 | #include <support/test-driver.c> |