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/* Verify that OpenACC 'attach'/'detach' doesn't interfere with reference
counting. */
#include <assert.h>
#include <stdlib.h>
#include <openacc.h>
/* Need to shared this (and, in particular, implicit '&data_work' in
'attach'/'detach' clauses) between 'test' and 'test_'. */
static unsigned char *data_work;
static void test_(unsigned variant,
unsigned char *data,
void *data_d)
{
assert(acc_is_present(&data_work, sizeof data_work));
assert(data_work == data);
acc_update_self(&data_work, sizeof data_work);
assert(data_work == data);
if (variant & 1)
{
#pragma acc enter data attach(data_work)
}
else
acc_attach((void **) &data_work);
acc_update_self(&data_work, sizeof data_work);
assert(data_work == data_d);
if (variant & 4)
{
if (variant & 2)
{ // attach some more
data_work = data;
acc_attach((void **) &data_work);
#pragma acc enter data attach(data_work)
acc_attach((void **) &data_work);
#pragma acc enter data attach(data_work)
#pragma acc enter data attach(data_work)
#pragma acc enter data attach(data_work)
acc_attach((void **) &data_work);
acc_attach((void **) &data_work);
#pragma acc enter data attach(data_work)
}
else
{}
}
else
{ // detach
data_work = data;
if (variant & 2)
{
#pragma acc exit data detach(data_work)
}
else
acc_detach((void **) &data_work);
acc_update_self(&data_work, sizeof data_work);
assert(data_work == data);
// now not attached anymore
#if 0
if (TODO)
{
acc_detach(&data_work); //TODO PR95203 "libgomp: attach count underflow"
acc_update_self(&data_work, sizeof data_work);
assert(data_work == data);
}
#endif
}
assert(acc_is_present(&data_work, sizeof data_work));
}
static void test(unsigned variant)
{
const int size = sizeof (void *);
unsigned char *data = (unsigned char *) malloc(size);
assert(data);
void *data_d = acc_create(data, size);
assert(data_d);
assert(acc_is_present(data, size));
data_work = data;
if (variant & 8)
{
#pragma acc data copyin(data_work)
test_(variant, data, data_d);
}
else
{
acc_copyin(&data_work, sizeof data_work);
test_(variant, data, data_d);
acc_delete(&data_work, sizeof data_work);
}
#if ACC_MEM_SHARED
assert(acc_is_present(&data_work, sizeof data_work));
#else
assert(!acc_is_present(&data_work, sizeof data_work));
#endif
data_work = NULL;
assert(acc_is_present(data, size));
acc_delete(data, size);
data_d = NULL;
#if ACC_MEM_SHARED
assert(acc_is_present(data, size));
#else
assert(!acc_is_present(data, size));
#endif
free(data);
data = NULL;
}
int main()
{
for (size_t i = 0; i < 16; ++i)
test(i);
return 0;
}
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