Viewing file:  atomic-exchange-2.c (1.46 KB) -rw-r--r--
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/* Test __atomic routines for existence and proper execution on 2 byte
values with each valid memory model. */
/* { dg-do run } */
/* { dg-require-effective-target sync_char_short } */
/* Test the execution of the __atomic_X builtin for a short. */
extern void abort(void);
short v, count, ret;
int
main ()
{
v = 0;
count = 0;
if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELAXED) != count)
abort ();
count++;
if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQUIRE) != count)
abort ();
count++;
if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELEASE) != count)
abort ();
count++;
if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQ_REL) != count)
abort ();
count++;
if (__atomic_exchange_n (&v, count + 1, __ATOMIC_SEQ_CST) != count)
abort ();
count++;
/* Now test the generic version. */
count++;
__atomic_exchange (&v, &count, &ret, __ATOMIC_RELAXED);
if (ret != count - 1 || v != count)
abort ();
count++;
__atomic_exchange (&v, &count, &ret, __ATOMIC_ACQUIRE);
if (ret != count - 1 || v != count)
abort ();
count++;
__atomic_exchange (&v, &count, &ret, __ATOMIC_RELEASE);
if (ret != count - 1 || v != count)
abort ();
count++;
__atomic_exchange (&v, &count, &ret, __ATOMIC_ACQ_REL);
if (ret != count - 1 || v != count)
abort ();
count++;
__atomic_exchange (&v, &count, &ret, __ATOMIC_SEQ_CST);
if (ret != count - 1 || v != count)
abort ();
count++;
return 0;
}
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