Viewing file:  generic-2.c (2.98 KB) -rw-r--r--
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/* { dg-do run } */
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
/* Avoid using the builtins, calling directly to the library functions
of the same name, so that we get direct access to the size_t and
don't have to create myriad types of different sizes. */
#define C2_(X,Y) X ## Y
#define C2(X,Y) C2_(X,Y)
#define S2(X) #X
#define S(X) S2(X)
#define ASMNAME(X) __asm__(S(C2(__USER_LABEL_PREFIX__,X)))
#define MAN(X) ASMNAME(C2(__atomic_,X))
void libat_load (size_t, void *, void *, int) MAN(load);
void libat_store (size_t, void *, void *, int) MAN(store);
void libat_exchange (size_t, void *, void *, void *, int) MAN(exchange);
bool libat_compare_exchange (size_t, void *, void *, void *, int, int)
MAN(compare_exchange);
bool libat_is_lock_free (size_t, void *) MAN(is_lock_free);
#define ALIGN 16
#define MAX 4*ALIGN
static char a[MAX];
static char b[MAX];
static char c[MAX];
static char pa[MAX];
static char pb[MAX];
static void test_load(void)
{
int i, j;
for (i = ALIGN; i < 2*ALIGN; ++i)
for (j = 1; j <= 2*ALIGN; ++j)
{
memcpy(b, pa, MAX);
memcpy(b + i, pb, j);
libat_load (j, b + i, a, 0);
if (memcmp (a, pb, j) != 0) abort ();
}
}
static void test_store(void)
{
int i, j;
for (i = ALIGN; i < 2*ALIGN; ++i)
for (j = 1; j <= 2*ALIGN; ++j)
{
memcpy(a, pa, MAX);
memcpy(b, pa, MAX);
memcpy(b + i, pb, j);
libat_store (j, a + i, pb, 0);
if (memcmp (a, b, MAX) != 0) abort ();
}
}
static void test_exch(void)
{
int i, j;
for (i = ALIGN; i < 2 * ALIGN; ++i)
for (j = 1; j <= 2*ALIGN; ++j)
{
memcpy(a, pa, MAX);
memcpy(b, pa, MAX);
memcpy(b + i, pb, j);
libat_exchange (j, a + i, pb, c, 0);
if (memcmp (a, b, MAX) != 0) abort ();
if (memcmp (c, pa + i, j) != 0) abort ();
memcpy(a, pa, MAX);
memcpy(c, pb, MAX);
libat_exchange (j, a + i, c + i, c + i, 0);
memcpy(b, pa, MAX);
memcpy(b + i, pb + i, j);
if (memcmp (b, a, MAX) != 0) abort ();
memcpy(b, pb, MAX);
memcpy(b + i, pa + i, j);
if (memcmp (b, c, MAX) != 0) abort ();
}
}
static void test_cas(void)
{
int i, j;
for (i = ALIGN; i < 2 * ALIGN; ++i)
for (j = 1; j <= 2*ALIGN; ++j)
{
memcpy(a, pa, MAX);
memcpy(b, pa, MAX);
memcpy(c, pa, MAX);
memcpy(b + i, pb, j);
if (!libat_compare_exchange (j, a + i, c + i, pb, 0, 0)) abort ();
if (memcmp (c, pa, MAX) != 0) abort ();
if (memcmp (a, b, MAX) != 0) abort ();
memcpy(a, pb, MAX);
memcpy(b, pa, MAX);
memcpy(c, pa, MAX);
memcpy(b + i, pb + i, j);
if (libat_compare_exchange (j, a + i, c + i, pb, 0, 0)) abort ();
if (memcmp (a, pb, MAX) != 0) abort ();
if (memcmp (b, c, MAX) != 0) abort ();
}
}
int main (void)
{
int i;
for (i = 0; i < MAX; ++i)
{
pa[i] = i * 2;
pb[i] = i * 2 + 1;
}
test_load ();
test_store ();
test_exch ();
test_cas ();
return 0;
}
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