1// RUN: %libomptarget-compile-run-and-check-generic
2
3// REQUIRES: unified_shared_memory
4
5#include <omp.h>
6#include <stdio.h>
7
8// ---------------------------------------------------------------------------
9// Various definitions copied from OpenMP RTL
10
11extern void __tgt_target_data_begin(int64_t device_id, int32_t arg_num,
12 void **args_base, void **args,
13 int64_t *arg_sizes, int64_t *arg_types);
14
15extern void __tgt_target_data_end(int64_t device_id, int32_t arg_num,
16 void **args_base, void **args,
17 int64_t *arg_sizes, int64_t *arg_types);
18
19// End of definitions copied from OpenMP RTL.
20// ---------------------------------------------------------------------------
21
22#pragma omp requires unified_shared_memory
23
24#define N 1024
25
26int main(int argc, char *argv[]) {
27 int fails;
28 void *host_alloc = 0, *device_alloc = 0;
29 int *a = (int *)malloc(N * sizeof(int));
30
31 // Init
32 for (int i = 0; i < N; ++i) {
33 a[i] = 10;
34 }
35 host_alloc = &a[0];
36
37// Dummy target region that ensures the runtime library is loaded when
38// the target data begin/end functions are manually called below.
39#pragma omp target
40 {}
41
42 // Manual calls
43 int device_id = omp_get_default_device();
44 int arg_num = 1;
45 void **args_base = (void **)&a;
46 void **args = (void **)&a;
47 int64_t arg_sizes[arg_num];
48
49 arg_sizes[0] = sizeof(int) * N;
50
51 int64_t arg_types[arg_num];
52
53 // Ox400 enables the CLOSE map type in the runtime:
54 // OMP_TGT_MAPTYPE_CLOSE = 0x400
55 // OMP_TGT_MAPTYPE_TO = 0x001
56 arg_types[0] = 0x400 | 0x001;
57
58 device_alloc = host_alloc;
59
60 __tgt_target_data_begin(device_id, arg_num, args_base, args, arg_sizes,
61 arg_types);
62
63#pragma omp target data use_device_ptr(a)
64 { device_alloc = a; }
65
66 __tgt_target_data_end(device_id, arg_num, args_base, args, arg_sizes,
67 arg_types);
68
69 // CHECK: a was copied to the device
70 if (device_alloc != host_alloc)
71 printf(format: "a was copied to the device\n");
72
73 free(a);
74
75 // CHECK: Done!
76 printf(format: "Done!\n");
77
78 return 0;
79}
80

source code of offload/test/unified_shared_memory/close_manual.c