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ATOMIC_AND(3) NetBSD Library Functions Manual ATOMIC_AND(3)
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Maintained for NetBSD
by Kimmo Suominen.
Based on man-cgi by Panagiotis Christias.
atomic_and, atomic_and_32, atomic_and_uint, atomic_and_ulong,
atomic_and_64, atomic_and_32_nv, atomic_and_uint_nv, atomic_and_ulong_nv,
atomic_and_64_nv -- atomic bitwise `and' operations
atomic_and_32(volatile uint32_t *ptr, uint32_t bits);
atomic_and_uint(volatile unsigned int *ptr, unsigned int bits);
atomic_and_ulong(volatile unsigned long *ptr, unsigned long bits);
atomic_and_64(volatile uint64_t *ptr, uint64_t bits);
atomic_and_32_nv(volatile uint32_t *ptr, uint32_t bits);
atomic_and_uint_nv(volatile unsigned int *ptr, unsigned int bits);
atomic_and_ulong_nv(volatile unsigned long *ptr, unsigned long bits);
atomic_and_64_nv(volatile uint64_t *ptr, uint64_t bits);
The atomic_and family of functions load the value of the variable refer-
enced by ptr, perform a bitwise `and' with the value bits, and store the
result back to the variable referenced by ptr in an atomic fashion.
The *_nv() variants of these functions return the new value.
The 64-bit variants of these functions are available only on platforms
that can support atomic 64-bit memory access. Applications can check for
the availability of 64-bit atomic memory operations by testing if the
pre-processor macro __HAVE_ATOMIC64_OPS is defined.
The atomic_and functions first appeared in NetBSD 5.0.
NetBSD 10.99 April 11, 2007 NetBSD 10.99