MEMPARSE(9) Basic Kernel Library Functions MEMPARSE(9)NAME
memparse - parse a string with mem suffixes into a number
SYNOPSIS
unsigned long long memparse(const char * ptr, char ** retptr);
ARGUMENTS
ptr
Where parse begins
retptr
(output) Optional pointer to next char after parse completes
DESCRIPTION
Parses a string into a number. The number stored at ptr is potentially suffixed with K (for kilobytes, or 1024 bytes), M (for megabytes, or
1048576 bytes), or G (for gigabytes, or 1073741824). If the number is suffixed with K, M, or G, then the return value is the number
multiplied by one kilobyte, one megabyte, or one gigabyte, respectively.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 MEMPARSE(9)
Check Out this Related Man Page
ATOMIC_DEC(3) BSD Library Functions Manual ATOMIC_DEC(3)NAME
atomic_dec, atomic_dec_32, atomic_dec_uint, atomic_dec_ulong, atomic_dec_ptr, atomic_dec_64, atomic_dec_32_nv, atomic_dec_uint_nv,
atomic_dec_ulong_nv, atomic_dec_ptr_nv, atomic_dec_64_nv -- atomic decrement operations
SYNOPSIS
#include <sys/atomic.h>
void
atomic_dec_32(volatile uint32_t *ptr);
void
atomic_dec_uint(volatile unsigned int *ptr);
void
atomic_dec_ulong(volatile unsigned long *ptr);
void
atomic_dec_ptr(volatile void *ptr);
void
atomic_dec_64(volatile uint64_t *ptr);
uint32_t
atomic_dec_32_nv(volatile uint32_t *ptr);
unsigned int
atomic_dec_uint_nv(volatile unsigned int *ptr);
unsigned long
atomic_dec_ulong_nv(volatile unsigned long *ptr);
void *
atomic_dec_ptr_nv(volatile void *ptr);
uint64_t
atomic_dec_64_nv(volatile uint64_t *ptr);
DESCRIPTION
The atomic_dec family of functions decrement (by one) 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.
SEE ALSO atomic_ops(3)HISTORY
The atomic_dec functions first appeared in NetBSD 5.0.
BSD April 11, 2007 BSD
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