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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 }