85 lines
2 KiB
C
85 lines
2 KiB
C
/* Test __atomic routines for existence and proper execution on 1 byte
|
|
values with each valid memory model. */
|
|
/* { dg-do run } */
|
|
|
|
/* Test the execution of the __atomic_compare_exchange_n builtin for a char. */
|
|
|
|
extern void abort(void);
|
|
|
|
char v = 0;
|
|
char expected = 0;
|
|
char max = ~0;
|
|
char desired = ~0;
|
|
char zero = 0;
|
|
|
|
#define STRONG 0
|
|
#define WEAK 1
|
|
|
|
int
|
|
main ()
|
|
{
|
|
|
|
if (!__atomic_compare_exchange_n (&v, &expected, max, STRONG , __ATOMIC_RELAXED, __ATOMIC_RELAXED))
|
|
abort ();
|
|
if (expected != 0)
|
|
abort ();
|
|
|
|
if (__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
|
|
abort ();
|
|
if (expected != max)
|
|
abort ();
|
|
|
|
if (!__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE))
|
|
abort ();
|
|
if (expected != max)
|
|
abort ();
|
|
if (v != 0)
|
|
abort ();
|
|
|
|
if (__atomic_compare_exchange_n (&v, &expected, desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE))
|
|
abort ();
|
|
if (expected != 0)
|
|
abort ();
|
|
|
|
if (!__atomic_compare_exchange_n (&v, &expected, desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST))
|
|
abort ();
|
|
if (expected != 0)
|
|
abort ();
|
|
if (v != max)
|
|
abort ();
|
|
|
|
/* Now test the generic version. */
|
|
|
|
v = 0;
|
|
|
|
if (!__atomic_compare_exchange (&v, &expected, &max, STRONG, __ATOMIC_RELAXED, __ATOMIC_RELAXED))
|
|
abort ();
|
|
if (expected != 0)
|
|
abort ();
|
|
|
|
if (__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
|
|
abort ();
|
|
if (expected != max)
|
|
abort ();
|
|
|
|
if (!__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE))
|
|
abort ();
|
|
if (expected != max)
|
|
abort ();
|
|
if (v != 0)
|
|
abort ();
|
|
|
|
if (__atomic_compare_exchange (&v, &expected, &desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE))
|
|
abort ();
|
|
if (expected != 0)
|
|
abort ();
|
|
|
|
if (!__atomic_compare_exchange (&v, &expected, &desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST))
|
|
abort ();
|
|
if (expected != 0)
|
|
abort ();
|
|
if (v != max)
|
|
abort ();
|
|
|
|
return 0;
|
|
}
|