blob: 79cebf65c348405618e7e008cc9d8f3fdab198e9 (
plain)
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
56
57
58
59
60
61
|
/* Verify that 'acc_unmap_data' unmaps even in presence of structured and
dynamic reference counts, but the device memory remains allocated. */
/* { dg-skip-if "" { *-*-* } { "*" } { "-DACC_MEM_SHARED=0" } } */
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <openacc.h>
int
main ()
{
const int N = 180;
const int N_i = 537;
const int C = 37;
unsigned char *h = (unsigned char *) malloc (N);
assert (h);
unsigned char *d = (unsigned char *) acc_malloc (N);
assert (d);
for (int i = 0; i < N_i; ++i)
{
acc_map_data (h, d, N);
assert (acc_is_present (h, N));
#pragma acc parallel present(h[0:N])
{
if (i == 0)
memset (h, C, N);
}
unsigned char *d_ = (unsigned char *) acc_create (h + 3, N - 77);
assert (d_ == d + 3);
#pragma acc data create(h[6:N - 44])
{
d_ = (unsigned char *) acc_create (h, N);
assert (d_ == d);
#pragma acc enter data create(h[0:N])
assert (acc_is_present (h, N));
acc_unmap_data (h);
assert (!acc_is_present (h, N));
}
/* We can however still access the device memory. */
#pragma acc parallel loop deviceptr(d)
for (int j = 0; j < N; ++j)
d[j] += i * j;
}
acc_memcpy_from_device(h, d, N);
for (int j = 0; j < N; ++j)
assert (h[j] == ((C + N_i * (N_i - 1) / 2 * j) % 256));
acc_free (d);
return 0;
}
|
