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/* { dg-do run } */
/* Test that low-latency free chains are sound. */
#include <stddef.h>
#include <omp.h>
#pragma omp requires dynamic_allocators
void
check (int cond, const char *msg)
{
if (!cond)
{
__builtin_printf ("%s\n", msg);
__builtin_abort ();
}
}
int
main ()
{
if (omp_get_initial_device () == omp_get_default_device ())
return 0; /* This test isn't interesting with host-fallback. */
#pragma omp target
{
/* Ensure that the memory we get *is* low-latency with a null-fallback. */
omp_alloctrait_t traits[2]
= { { omp_atk_fallback, omp_atv_null_fb },
{ omp_atk_access, omp_atv_cgroup } };
omp_allocator_handle_t lowlat = omp_init_allocator (omp_low_lat_mem_space,
2, traits);
int size = 4;
char *a = omp_alloc (size, lowlat);
char *b = omp_alloc (size, lowlat);
char *c = omp_alloc (size, lowlat);
char *d = omp_alloc (size, lowlat);
/* There are headers and padding to account for. */
int size2 = size + (b-a);
int size3 = size + (c-a);
int size4 = size + (d-a) + 100; /* Random larger amount. */
check (a != NULL && b != NULL && c != NULL && d != NULL,
"omp_alloc returned NULL\n");
omp_free (a, lowlat);
char *p = omp_alloc (size, lowlat);
check (p == a, "allocate did not reuse first chunk");
omp_free (b, lowlat);
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not reuse second chunk");
omp_free (c, lowlat);
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not reuse third chunk");
omp_free (a, lowlat);
omp_free (b, lowlat);
p = omp_alloc (size2, lowlat);
check (p == a, "allocate did not coalesce first two chunks");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == a, "allocate did not split first chunk (1)");
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split first chunk (2)");
omp_free (b, lowlat);
omp_free (c, lowlat);
p = omp_alloc (size2, lowlat);
check (p == b, "allocate did not coalesce middle two chunks");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split second chunk (1)");
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not split second chunk (2)");
omp_free (b, lowlat);
omp_free (a, lowlat);
p = omp_alloc (size2, lowlat);
check (p == a, "allocate did not coalesce first two chunks, reverse free");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == a, "allocate did not split first chunk (1), reverse free");
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split first chunk (2), reverse free");
omp_free (c, lowlat);
omp_free (b, lowlat);
p = omp_alloc (size2, lowlat);
check (p == b, "allocate did not coalesce second two chunks, reverse free");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split second chunk (1), reverse free");
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not split second chunk (2), reverse free");
omp_free (a, lowlat);
omp_free (b, lowlat);
omp_free (c, lowlat);
p = omp_alloc (size3, lowlat);
check (p == a, "allocate did not coalesce first three chunks");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == a, "allocate did not split first chunk (1)");
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split first chunk (2)");
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not split first chunk (3)");
omp_free (b, lowlat);
omp_free (c, lowlat);
omp_free (d, lowlat);
p = omp_alloc (size3, lowlat);
check (p == b, "allocate did not coalesce last three chunks");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split second chunk (1)");
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not split second chunk (2)");
p = omp_alloc (size, lowlat);
check (p == d, "allocate did not split second chunk (3)");
omp_free (c, lowlat);
omp_free (b, lowlat);
omp_free (a, lowlat);
p = omp_alloc (size3, lowlat);
check (p == a, "allocate did not coalesce first three chunks, reverse free");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == a, "allocate did not split first chunk (1), reverse free");
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split first chunk (2), reverse free");
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not split first chunk (3), reverse free");
omp_free (d, lowlat);
omp_free (c, lowlat);
omp_free (b, lowlat);
p = omp_alloc (size3, lowlat);
check (p == b, "allocate did not coalesce second three chunks, reverse free");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split second chunk (1), reverse free");
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not split second chunk (2), reverse free");
p = omp_alloc (size, lowlat);
check (p == d, "allocate did not split second chunk (3), reverse free");
omp_free (c, lowlat);
omp_free (a, lowlat);
omp_free (b, lowlat);
p = omp_alloc (size3, lowlat);
check (p == a, "allocate did not coalesce first three chunks, mixed free");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == a, "allocate did not split first chunk (1), mixed free");
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split first chunk (2), mixed free");
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not split first chunk (3), mixed free");
omp_free (d, lowlat);
omp_free (b, lowlat);
omp_free (c, lowlat);
p = omp_alloc (size3, lowlat);
check (p == b, "allocate did not coalesce second three chunks, mixed free");
omp_free (p, lowlat);
p = omp_alloc (size, lowlat);
check (p == b, "allocate did not split second chunk (1), mixed free");
p = omp_alloc (size, lowlat);
check (p == c, "allocate did not split second chunk (2), mixed free");
p = omp_alloc (size, lowlat);
check (p == d, "allocate did not split second chunk (3), mixed free");
omp_free (a, lowlat);
omp_free (b, lowlat);
omp_free (c, lowlat);
omp_free (d, lowlat);
p = omp_alloc (size4, lowlat);
check (p == a, "allocate did not coalesce all memory");
}
return 0;
}
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