# atomic_bits(3c) [linux man page]

atomic_bits(3C) atomic_bits(3C)NAME

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

#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); 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. The atomic_set_long_excl() and atomic_clear_long_excl() functions return 0 if bit was successfully set or cleared. They returnif bit was already set or cleared. No errors are defined. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ atomic_add(3C), atomic_and(3C), atomic_cas(3C), atomic_dec(3C), atomic_inc(3C), atomic_or(3C), atomic_swap(3C), membar_ops(3C), attributes(5), atomic_ops(9F) 13 May 2005 atomic_bits(3C)-1

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atomic_swap(3C) Standard C Library Functions atomic_swap(3C)NAME

atomic_swap, atomic_swap_8, atomic_swap_uchar, atomic_swap_16, atomic_swap_ushort, atomic_swap_32, atomic_swap_uint, atomic_swap_ulong, atomic_swap_64, atomic_swap_ptr - atomic swap operationsSYNOPSIS

#include <atomic.h> uint8_t atomic_swap_8(volatile uint8_t *target, uint8_t newval); uchar_t atomic_swap_uchar(volatile uchar_t *target, uchar_t newval); uint16_t atomic_swap_16(volatile uint16_t *target, uint16_t newval); ushort_t atomic_swap_ushort(volatile ushort_t *target, ushort_t newval); uint32_t atomic_swap_32(volatile uint32_t *target, uint32_t newval); uint_t atomic_swap_uint(volatile uint_t *target, uint_t newval); ulong_t atomic_swap_ulong(volatile ulong_t *target, ulong_t newval); uint64_t atomic_swap_64(volatile uint64_t *target, uint64_t newval); void *atomic_swap_ptr(volatile void *target, void *newval);DESCRIPTION

These functions enable a swap operation to occur atomically. The value stored in target is replaced with newval. The old value is returned by the function.RETURN VALUES

These functions return the old of *target.ERRORS

No errors are defined.ATTRIBUTES

See attributes(5) 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_bits(3C), atomic_dec(3C), atomic_inc(3C), atomic_or(3C), atomic_cas(3C), membar_ops(3C), attributes(5), atomic_ops(9F)SunOS 5.1113 May 2005 atomic_swap(3C)