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
|
/* Verify that 'acc_map_data' does not copy data to, and 'acc_unmap_data' does
not copy data from the device. */
/* { dg-skip-if "" { *-*-* } { "*" } { "-DACC_MEM_SHARED=0" } } */
#include <stdlib.h>
#include <string.h>
#include <openacc.h>
int
main ()
{
const int c0 = 9;
const int c1 = 40;
const int c2 = 47;
const size_t N = 256;
unsigned char *h = (unsigned char *) malloc (N);
void *d = acc_malloc (N);
memset (h, c0, N); // H <- c0
acc_memcpy_to_device (d, h, N); // D <- H = c0
memset (h, c1, N); // H <- c1
acc_map_data (h, d, N);
for (size_t i = 0; i < N; ++i)
if (h[i] != c1)
abort ();
acc_memcpy_from_device (h, d, N); // H <- D = c0
for (size_t i = 0; i < N; ++i)
if (h[i] != c0)
abort ();
memset (h, c2, N); // H <- c2
acc_unmap_data (h);
for (size_t i = 0; i < N; ++i)
if (h[i] != c2)
abort ();
acc_memcpy_from_device (h, d, N); // H <- D = c0
for (size_t i = 0; i < N; ++i)
if (h[i] != c0)
abort ();
acc_free (d);
free (h);
return 0;
}
|
