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1// RUN: %libomptarget-compile-run-and-check-generic2 3// REQUIRES: unified_shared_memory4 5#include <omp.h>6#include <stdio.h>7 8// ---------------------------------------------------------------------------9// Various definitions copied from OpenMP RTL10 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_memory23 24#define N 102425 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 // Init32 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 when38// the target data begin/end functions are manually called below.39#pragma omp target40 {}41 42 // Manual calls43 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 = 0x40055 // OMP_TGT_MAPTYPE_TO = 0x00156 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 device70 if (device_alloc != host_alloc)71 printf("a was copied to the device\n");72 73 free(a);74 75 // CHECK: Done!76 printf("Done!\n");77 78 return 0;79}80