1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
#include <pthread.h>
#include <unistd.h>
#include "init_unwinder.h"
static pthread_mutex_t dummy_mtx = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t dummy_cond = PTHREAD_COND_INITIALIZER;
static int dummy_started;
static void *dummy_thread(void *arg __attribute__((unused)))
{
pthread_mutex_lock(&dummy_mtx);
dummy_started = 1;
pthread_cond_broadcast(&dummy_cond);
pthread_mutex_unlock(&dummy_mtx);
pause();
return NULL;
}
int init_unwinder(void)
{
pthread_t dummy;
int rc;
pthread_mutex_lock(&dummy_mtx);
rc = pthread_create(&dummy, NULL, dummy_thread, NULL);
if (rc != 0) {
pthread_mutex_unlock(&dummy_mtx);
return rc;
}
while (!dummy_started)
pthread_cond_wait(&dummy_cond, &dummy_mtx);
pthread_mutex_unlock(&dummy_mtx);
rc = pthread_cancel(dummy);
pthread_join(dummy, NULL);
return rc;
}
|
