atomicext

func AddFloat64 ¶

func AddFloat64(ptr *float64, value float64)

func AndInt64 ¶

func AndInt64(ptr *int64, value int64)

func MaxFloat64 ¶

func MaxFloat64(ptr *float64, value float64)

func MaxInt64 ¶

func MaxInt64(ptr *int64, value int64)

func MinFloat64 ¶

func MinFloat64(ptr *float64, value float64)

func MinInt64 ¶

func MinInt64(ptr *int64, value int64)

func OrInt64 ¶

func OrInt64(ptr *int64, value int64)

func Pause ¶

func Pause()

Pause improves the performance of spin-wait loops. When executing a "spin-wait loop," processors will suffer a severe performance penalty when exiting the loop because it detects a possible memory order violation. The Pause function provides a hint to the processor that the code sequence is a spin-wait loop. The processor uses this hint to avoid the memory order violation in most situations, which greatly improves processor performance. For this reason, it is recommended that a Pause instruction be placed in all spin-wait loops. [paraphrasing the Intel SDM, vol. 2B 4-235]

func XorInt64 ¶

func XorInt64(ptr *int64, value int64)