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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/*
* This is a basic test that checks uftrace can trace functions
* properly within a multi-thread environment.
*/
#include <pthread.h>
#include <stdlib.h>
#define NUM_THREAD 4
static int a(void *);
static int b(void *);
static int c(void *);
static int a(void *arg)
{
return b(arg) - 1;
}
static int b(void *arg)
{
return c(arg) + 1;
}
static int c(void *arg)
{
return *(int *)arg;
}
static void *foo(void *arg)
{
return (void *)(long)a(arg);
}
int main(int argc, char *argv[])
{
int i;
int n = 10;
int ret = 0;
void *v;
pthread_t t[NUM_THREAD];
if (argc > 1)
n = atoi(argv[1]);
for (i = 0; i < NUM_THREAD; i++)
pthread_create(&t[i], NULL, foo, &n);
for (i = 0; i < NUM_THREAD; i++) {
pthread_join(t[i], &v);
ret += (long)v;
}
if (n * NUM_THREAD != ret)
return ret;
return 0;
}
|