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
test_cpu_pointer(void)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 CPU_SET(i, &test_affinity);
26 sched_setaffinity(0, sizeof(test_affinity),
27 &test_affinity);
28 assert(sched_getcpu() == i);
29 assert(rseq_current_cpu() == i);
30 assert(rseq_current_cpu_raw() == i);
31 assert(rseq_cpu_start() == i);
32 CPU_CLR(i, &test_affinity);
33 }
34 }
35 sched_setaffinity(0, sizeof(affinity), &affinity);
36 }
37
main(int argc,char ** argv)38 int main(int argc, char **argv)
39 {
40 if (rseq_register_current_thread()) {
41 fprintf(stderr, "Error: rseq_register_current_thread(...) failed(%d): %s\n",
42 errno, strerror(errno));
43 goto init_thread_error;
44 }
45 printf("testing current cpu\n");
46 test_cpu_pointer();
47 if (rseq_unregister_current_thread()) {
48 fprintf(stderr, "Error: rseq_unregister_current_thread(...) failed(%d): %s\n",
49 errno, strerror(errno));
50 goto init_thread_error;
51 }
52 return 0;
53
54 init_thread_error:
55 return -1;
56 }
57