Standard C Library Functions                      atomicswap(3C)



NAME
     atomicswap,        atomicswap8,        atomicswapuchar,
     atomicswap16,      atomicswapushort,     atomicswap32,
     atomicswapuint,     atomicswapulong,     atomicswap64,
     atomicswapptr - atomic swap operations

SYNOPSIS
     #include 

     uint8t atomicswap8(volatile uint8t *target, uint8t newval);


     uchart atomicswapuchar(volatile uchart *target, uchart newval);


     uint16t atomicswap16(volatile uint16t *target, uint16t newval);


     ushortt atomicswapushort(volatile ushortt *target, ushortt newval);


     uint32t atomicswap32(volatile uint32t *target, uint32t newval);


     uintt atomicswapuint(volatile uintt *target, uintt newval);


     ulongt atomicswapulong(volatile ulongt *target, ulongt newval);


     uint64t atomicswap64(volatile uint64t *target, uint64t newval);


     void *atomicswapptr(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.

ERORS
     No errors are defined.

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:





SunOS 5.11          Last change: 13 May 2005                    1






Standard C Library Functions                      atomicswap(3C)



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Stable                      
    
     MT-Level                     MT-Safe                     
    


SEE ALSO
     atomicadd(3C),       atomicand(3C),       atomicbits(3C),
     atomicdec(3C),        atomicinc(3C),        atomicor(3C),
     atomiccas(3C),        membarops(3C),        attributes(5),
     atomicops(9F)









































SunOS 5.11          Last change: 13 May 2005                    2