ATOMIC_BITS(3C) Standard C Library Functions ATOMIC_BITS(3C)

NAME

atomic_bits, atomic_set_long_excl, atomic_clear_long_excl - atomic set
and clear bit operations

SYNOPSIS

#include <atomic.h>

int atomic_set_long_excl(volatile ulong_t *target, uint_t bit);


int atomic_clear_long_excl(volatile ulong_t *target, uint_t bit);

DESCRIPTION

The atomic_set_long_excl() and atomic_clear_long_excl() functions perform
an exclusive atomic bit set or clear operation on target. The value of
bit specifies the number of the bit to be modified within target. Bits
are numbered from zero to one less than the maximum number of bits in a
long. If the value of bit falls outside of this range, the result of the
operation is undefined.

RETURN VALUES

The atomic_set_long_excl() and atomic_clear_long_excl() functions return
0 if bit was successfully set or cleared. They return -1 if bit was
already set or cleared.

ERRORS

No errors are defined.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Stable |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+

SEE ALSO

atomic_add(3C), atomic_and(3C), atomic_cas(3C), atomic_dec(3C),
atomic_inc(3C), atomic_ops(3C), atomic_or(3C), atomic_swap(3C),
membar_ops(3C), attributes(7)

March 13, 2016 ATOMIC_BITS(3C)