1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 #include <stdio.h>
16 #include <sys/sysinfo.h>
17 #include "test.h"
18
19 /**
20 * @tc.name : get_nprocs_conf_0100
21 * @tc.desc : Verify the number of CPUs obtained
22 * @tc.level : Level 0
23 */
get_nprocs_conf_0100(void)24 void get_nprocs_conf_0100(void)
25 {
26 int nprocs = get_nprocs();
27 int nprocs_conf = get_nprocs_conf();
28 if (nprocs_conf < nprocs) {
29 t_error("%s nprocs_conf should be greater than nprocs", __func__);
30 }
31 if (sysconf(_SC_NPROCESSORS_CONF) != nprocs_conf) {
32 t_error("%s get_nprocs_conf failed\n", __func__);
33 }
34 }
35
36 /**
37 * @tc.name : get_nprocs_conf_0200
38 * @tc.desc : Verify the number of CPUs is different, when cpu0 is offline.
39 * @tc.level : Level 0
40 */
get_nprocs_conf_0200(void)41 void get_nprocs_conf_0200(void)
42 {
43 char buf[8];
44 FILE *s = fopen("/sys/devices/system/cpu/cpu0/online", "w+");
45 fputs("0", s);
46 fclose(s);
47
48 int nprocs = get_nprocs();
49 int nprocs_conf = get_nprocs_conf();
50 if (nprocs_conf < nprocs) {
51 t_error("%s nprocs_conf should be greater than nprocs", __func__);
52 }
53 s = fopen("/sys/devices/system/cpu/cpu0/online","w+");
54 fputs("1", s);
55 fclose(s);
56 }
57
main(int argc,char * argv[])58 int main(int argc, char *argv[])
59 {
60 get_nprocs_conf_0100();
61 get_nprocs_conf_0200();
62 return t_status;
63 }