1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <sys/mman.h>
6 #include <pthread.h>
7 #include <sys/types.h>
8 #include <sys/stat.h>
9 #include <fcntl.h>
10 #include "test_send_signal_kern.skel.h"
11
12 static void sigusr1_handler(int signum)
13 {
14 }
15
16 #define THREAD_COUNT 100
17
18 static void *worker(void *p)
19 {
20 int i;
21
22 for ( i = 0; i < 1000; i++)
23 usleep(1);
24
25 return NULL;
26 }
27
28 /* NOTE: cause events loss */
29 void serial_test_send_signal_sched_switch(void)
30 {
31 struct test_send_signal_kern *skel;
32 pthread_t threads[THREAD_COUNT];
33 u32 duration = 0;
34 int i, err;
35
36 signal(SIGUSR1, sigusr1_handler);
37
38 skel = test_send_signal_kern__open_and_load();
39 if (CHECK(!skel, "skel_open_and_load", "skeleton open_and_load failed\n"))
40 return;
41
42 skel->bss->pid = getpid();
43 skel->bss->sig = SIGUSR1;
44
45 err = test_send_signal_kern__attach(skel);
46 if (CHECK(err, "skel_attach", "skeleton attach failed\n"))
47 goto destroy_skel;
48
49 for (i = 0; i < THREAD_COUNT; i++) {
50 err = pthread_create(threads + i, NULL, worker, NULL);
51 if (CHECK(err, "pthread_create", "Error creating thread, %s\n",
52 strerror(errno)))
53 goto destroy_skel;
54 }
55
56 for (i = 0; i < THREAD_COUNT; i++)
57 pthread_join(threads[i], NULL);
58
59 destroy_skel:
60 test_send_signal_kern__destroy(skel);
61 }
62
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