Content-type: text/html Man page of atomic_bits

atomic_bits

Section: Kernel Functions for Drivers (9F)
Updated: 16 Jan 2006
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NAME

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

SYNOPSIS

#include <sys/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.  

CONTEXT

These functions can be called from user, interrupt, or kernel context.  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityEvolving

 

SEE ALSO

atomic_add(9F), atomic_and(9F), atomic_cas(9F), atomic_dec(9F), atomic_inc(9F), atomic_or(9F), atomic_swap(9F), membar_ops(9F), attributes(5), atomic_ops(3C)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
CONTEXT
ATTRIBUTES
SEE ALSO

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Time: 02:39:39 GMT, October 02, 2010