개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

atomic_cas(9f)

atomic_cas(9F)                 Kernel Functions                 atomic_cas(9F)



NAME
       atomic_cas,      atomic_cas_8,     atomic_cas_uchar,     atomic_cas_16,
       atomic_cas_ushort,  atomic_cas_32,  atomic_cas_uint,  atomic_cas_ulong,
       atomic_cas_64, atomic_cas_ptr - atomic compare and swap operations

SYNOPSIS
       #include <sys/atomic.h>

       uint8_t atomic_cas_8(volatile uint8_t *target, uint8_t cmp, uint8_t
            newval);


       uchar_t atomic_cas_uchar(volatile uchar_t *target, uchar_t cmp, uchar_t
            newval);


       uint16_t atomic_cas_16(volatile uint16_t *target, uint16_t cmp, uint16_t
            newval);


       ushort_t atomic_cas_ushort(volatile ushort_t *target, ushort_t cmp,
            ushort_t newval);


       uint32_t atomic_cas_32(volatile uint32_t *target, uint32_t cmp, uint32_t
            newval);


       uint_t atomic_cas_uint(volatile uint_t *target, uint_t cmp, uint_t newval);


       ulong_t atomic_cas_ulong(volatile ulong_t *target, ulong_t cmp, ulong_t
            newval);


       uint64_t atomic_cas_64(volatile uint64_t *target, uint64_t cmp, uint64_t
            newval);


       void *atomic_cas_ptr(volatile void *target, void *cmp, void *newval);

DESCRIPTION
       These  functions  enable  a  compare and swap operation to occur atomi‐
       cally. The value stored in target is compared with cmp. If these values
       are  equal, the value stored in target is replaced with newval. The old
       value stored in target is returned by the function whether or  not  the
       replacement occurred.

RETURN VALUES
       These functions return the old of *target.

ERRORS
       No errors are defined.

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

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


       tab()  box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
       TRIBUTE VALUE _ Interface StabilityCommitted


SEE ALSO
       atomic_ops(3C),    attributes(7),    atomic_add(9F),    atomic_and(9F),
       atomic_bits(9F),    atomic_dec(9F),    atomic_inc(9F),   atomic_or(9F),
       atomic_swap(9F), membar_ops(9F)



Oracle Solaris 11.4               16 Jan 2006                   atomic_cas(9F)