2017-05-30 20:36:49 +00:00
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package main
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2017-07-01 21:29:22 +00:00
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import (
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2017-08-11 14:18:20 +00:00
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"sync/atomic"
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2017-07-01 21:29:22 +00:00
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)
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2017-12-01 22:37:26 +00:00
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/* Atomic Boolean */
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2017-07-08 21:51:26 +00:00
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const (
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2017-08-11 14:18:20 +00:00
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AtomicFalse = int32(iota)
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2017-07-08 21:51:26 +00:00
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AtomicTrue
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)
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2017-08-11 14:18:20 +00:00
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type AtomicBool struct {
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flag int32
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}
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func (a *AtomicBool) Get() bool {
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return atomic.LoadInt32(&a.flag) == AtomicTrue
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}
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2017-11-17 16:25:45 +00:00
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func (a *AtomicBool) Swap(val bool) bool {
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flag := AtomicFalse
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if val {
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flag = AtomicTrue
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}
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return atomic.SwapInt32(&a.flag, flag) == AtomicTrue
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}
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2017-08-11 14:18:20 +00:00
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func (a *AtomicBool) Set(val bool) {
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flag := AtomicFalse
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if val {
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flag = AtomicTrue
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}
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atomic.StoreInt32(&a.flag, flag)
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}
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2017-12-01 22:37:26 +00:00
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/* Integer manipulation */
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2017-09-24 19:35:25 +00:00
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func toInt32(n uint32) int32 {
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mask := uint32(1 << 31)
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return int32(-(n & mask) + (n & ^mask))
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}
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2017-05-30 20:36:49 +00:00
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func min(a uint, b uint) uint {
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if a > b {
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return b
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}
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return a
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}
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2017-06-30 12:41:08 +00:00
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2017-07-10 10:09:19 +00:00
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func minUint64(a uint64, b uint64) uint64 {
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if a > b {
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return b
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}
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return a
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}
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