Viewing file:  target-20.c (2.15 KB) -rw-r--r--
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/* { dg-require-effective-target offload_device_nonshared_as } */
#include <stdlib.h>
#include <assert.h>
#define N 40
int sum;
int var1 = 1;
int var2 = 2;
#pragma omp declare target
int D[N];
#pragma omp end declare target
void enter_data (int *X)
{
#pragma omp target enter data map(to: var1, var2, X[:N]) map(alloc: sum)
}
void exit_data_0 (int *D)
{
#pragma omp target exit data map(delete: D[:N])
}
void exit_data_1 ()
{
#pragma omp target exit data map(from: var1)
}
void exit_data_2 (int *X)
{
#pragma omp target exit data map(from: var2) map(release: X[:N], sum)
}
void exit_data_3 (int *p)
{
#pragma omp target exit data map(from: p[:0])
}
void test_nested ()
{
int X = 0, Y = 0, Z = 0;
#pragma omp target data map(from: X, Y, Z)
{
#pragma omp target data map(from: X, Y, Z)
{
#pragma omp target map(from: X, Y, Z)
X = Y = Z = 1337;
assert (X == 0);
assert (Y == 0);
assert (Z == 0);
#pragma omp target exit data map(from: X) map(release: Y)
assert (X == 0);
assert (Y == 0);
#pragma omp target exit data map(release: Y) map(delete: Z)
assert (Y == 0);
assert (Z == 0);
}
assert (X == 1337);
assert (Y == 0);
assert (Z == 0);
#pragma omp target map(from: X)
X = 2448;
assert (X == 2448);
assert (Y == 0);
assert (Z == 0);
X = 4896;
}
assert (X == 4896);
assert (Y == 0);
assert (Z == 0);
}
int main ()
{
int *X = malloc (N * sizeof (int));
int *Y = malloc (N * sizeof (int));
X[10] = 10;
Y[20] = 20;
enter_data (X);
exit_data_0 (D); /* This should have no effect on D. */
#pragma omp target map(alloc: var1, var2, X[:N]) map(to: Y[:N]) map(always from: sum)
{
var1 += X[10];
var2 += Y[20];
sum = var1 + var2;
D[sum]++;
}
assert (var1 == 1);
assert (var2 == 2);
assert (sum == 33);
exit_data_1 ();
assert (var1 == 11);
assert (var2 == 2);
/* Increase refcount of already mapped X[0:N]. */
#pragma omp target enter data map(alloc: X[16:1])
exit_data_2 (X);
assert (var2 == 22);
exit_data_3 (X + 5); /* Unmap X[0:N]. */
free (X);
free (Y);
test_nested ();
return 0;
}
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