2 * Copyright (c) 2014 Kmindg <kmindg@gmail.com>
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
21 #include "command-line.h"
25 enum { MAX_BITS = 20 * BITMAP_ULONG_BITS };
28 elapsed(const struct timeval *start)
33 return timeval_to_msec(&end) - timeval_to_msec(start);
36 /* Tests bitmap_equal. */
38 test_bitmap_equal(void)
42 a = bitmap_allocate(MAX_BITS);
43 b = bitmap_allocate(MAX_BITS);
46 assert(bitmap_equal(a, b, MAX_BITS));
47 assert(bitmap_equal(a, b, MAX_BITS - 1));
48 assert(bitmap_equal(a, b, MAX_BITS - (BITMAP_ULONG_BITS - 1)));
50 bitmap_set_multiple(a, 10 * BITMAP_ULONG_BITS, BITMAP_ULONG_BITS, true);
51 assert(bitmap_equal(a, b, 10 * BITMAP_ULONG_BITS));
54 assert(!bitmap_equal(a, b, 11 * BITMAP_ULONG_BITS));
55 assert(!bitmap_equal(a, b, 11 * BITMAP_ULONG_BITS - 1));
56 assert(!bitmap_equal(a, b,
57 11 * BITMAP_ULONG_BITS - (BITMAP_ULONG_BITS - 1)));
63 /* Tests bitmap_scan. */
65 test_bitmap_scan(void)
69 a = bitmap_allocate(MAX_BITS);
72 assert(bitmap_scan(a, true, 1, BITMAP_ULONG_BITS) == BITMAP_ULONG_BITS);
73 assert(bitmap_scan(a, true, BITMAP_ULONG_BITS - 1, BITMAP_ULONG_BITS)
74 == BITMAP_ULONG_BITS);
75 assert(bitmap_scan(a, true, 0, BITMAP_ULONG_BITS) == BITMAP_ULONG_BITS);
76 assert(bitmap_scan(a, true, 0, BITMAP_ULONG_BITS + 1)
77 == BITMAP_ULONG_BITS + 1);
78 assert(bitmap_scan(a, true, 0, 2 * BITMAP_ULONG_BITS - 1)
79 == 2 * BITMAP_ULONG_BITS - 1);
81 bitmap_set1(a, MAX_BITS - 1);
82 assert(bitmap_scan(a, true, 0, MAX_BITS) == MAX_BITS - 1);
83 bitmap_set1(a, MAX_BITS - BITMAP_ULONG_BITS + 1);
84 assert(bitmap_scan(a, true, 3, MAX_BITS)
85 == MAX_BITS - BITMAP_ULONG_BITS + 1);
86 bitmap_set1(a, BITMAP_ULONG_BITS - 1);
87 assert(bitmap_scan(a, true, 7, MAX_BITS - 1) == BITMAP_ULONG_BITS - 1);
89 assert(bitmap_scan(a, true, 0, MAX_BITS - 7) == 0);
91 bitmap_set_multiple(a, 0, MAX_BITS, true);
94 assert(bitmap_scan(a, false, 1, BITMAP_ULONG_BITS) == BITMAP_ULONG_BITS);
95 assert(bitmap_scan(a, false, BITMAP_ULONG_BITS - 1, BITMAP_ULONG_BITS)
96 == BITMAP_ULONG_BITS);
97 assert(bitmap_scan(a, false, 0, BITMAP_ULONG_BITS) == BITMAP_ULONG_BITS);
98 assert(bitmap_scan(a, false, 0, BITMAP_ULONG_BITS + 1)
99 == BITMAP_ULONG_BITS + 1);
100 assert(bitmap_scan(a, false, 0, 2 * BITMAP_ULONG_BITS - 1)
101 == 2 * BITMAP_ULONG_BITS - 1);
103 bitmap_set0(a, MAX_BITS - 1);
104 assert(bitmap_scan(a, false, 0, MAX_BITS) == MAX_BITS - 1);
105 bitmap_set0(a, MAX_BITS - BITMAP_ULONG_BITS + 1);
106 assert(bitmap_scan(a, false, 3, MAX_BITS)
107 == MAX_BITS - BITMAP_ULONG_BITS + 1);
108 bitmap_set0(a, BITMAP_ULONG_BITS - 1);
109 assert(bitmap_scan(a, false, 7, MAX_BITS - 1) == BITMAP_ULONG_BITS - 1);
111 assert(bitmap_scan(a, false, 0, MAX_BITS - 7) == 0);
117 run_test(void (*function)(void))
124 run_tests(struct ovs_cmdl_context *ctx OVS_UNUSED)
126 run_test(test_bitmap_equal);
127 run_test(test_bitmap_scan);
132 run_benchmarks(struct ovs_cmdl_context *ctx)
134 int n_iter = strtol(ctx->argv[1], NULL, 10);
135 struct timeval start;
137 xgettimeofday(&start);
138 for (int i = 0; i < n_iter; i++) {
141 printf("bitmap equal: %5d ms\n", elapsed(&start));
143 xgettimeofday(&start);
144 for (int i = 0; i < n_iter; i++) {
147 printf("bitmap scan: %5d ms\n", elapsed(&start));
151 static const struct ovs_cmdl_command commands[] = {
152 {"check", NULL, 0, 0, run_tests},
153 {"benchmark", NULL, 1, 1, run_benchmarks},
154 {NULL, NULL, 0, 0, NULL},
158 test_bitmap_main(int argc, char *argv[])
160 struct ovs_cmdl_context ctx = {
165 set_program_name(argv[0]);
166 ovs_cmdl_run_command(&ctx, commands);
169 OVSTEST_REGISTER("test-bitmap", test_bitmap_main);