1 | // SPDX-License-Identifier: LGPL-2.1 |
2 | /* |
3 | * Basic test coverage for critical regions and rseq_current_cpu(). |
4 | */ |
5 | |
6 | #define _GNU_SOURCE |
7 | #include <assert.h> |
8 | #include <sched.h> |
9 | #include <signal.h> |
10 | #include <stdio.h> |
11 | #include <string.h> |
12 | #include <sys/time.h> |
13 | |
14 | #include "rseq.h" |
15 | |
16 | void test_cpu_pointer(void) |
17 | { |
18 | cpu_set_t affinity, test_affinity; |
19 | int i; |
20 | |
21 | sched_getaffinity(0, sizeof(affinity), &affinity); |
22 | CPU_ZERO(&test_affinity); |
23 | for (i = 0; i < CPU_SETSIZE; i++) { |
24 | if (CPU_ISSET(i, &affinity)) { |
25 | int node; |
26 | |
27 | CPU_SET(i, &test_affinity); |
28 | sched_setaffinity(0, sizeof(test_affinity), |
29 | &test_affinity); |
30 | assert(sched_getcpu() == i); |
31 | assert(rseq_current_cpu() == i); |
32 | assert(rseq_current_cpu_raw() == i); |
33 | assert(rseq_cpu_start() == i); |
34 | node = rseq_fallback_current_node(); |
35 | assert(rseq_current_node_id() == node); |
36 | CPU_CLR(i, &test_affinity); |
37 | } |
38 | } |
39 | sched_setaffinity(0, sizeof(affinity), &affinity); |
40 | } |
41 | |
42 | int main(int argc, char **argv) |
43 | { |
44 | if (rseq_register_current_thread()) { |
45 | fprintf(stderr, "Error: rseq_register_current_thread(...) failed(%d): %s\n" , |
46 | errno, strerror(errno)); |
47 | goto init_thread_error; |
48 | } |
49 | printf("testing current cpu\n" ); |
50 | test_cpu_pointer(); |
51 | if (rseq_unregister_current_thread()) { |
52 | fprintf(stderr, "Error: rseq_unregister_current_thread(...) failed(%d): %s\n" , |
53 | errno, strerror(errno)); |
54 | goto init_thread_error; |
55 | } |
56 | return 0; |
57 | |
58 | init_thread_error: |
59 | return -1; |
60 | } |
61 | |