forked from tidwall/tile38
/
atomic.go
72 lines (63 loc) · 1.08 KB
/
atomic.go
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package controller
import (
"sync"
"sync/atomic"
"time"
)
type aint struct{ v uintptr }
func (a *aint) add(d int) int {
if d < 0 {
return int(atomic.AddUintptr(&a.v, ^uintptr((d*-1)-1)))
}
return int(atomic.AddUintptr(&a.v, uintptr(d)))
}
func (a *aint) get() int {
return int(atomic.LoadUintptr(&a.v))
}
func (a *aint) set(i int) int {
return int(atomic.SwapUintptr(&a.v, uintptr(i)))
}
type abool struct{ v uint32 }
func (a *abool) on() bool {
return atomic.LoadUint32(&a.v) != 0
}
func (a *abool) set(t bool) bool {
if t {
return atomic.SwapUint32(&a.v, 1) != 0
}
return atomic.SwapUint32(&a.v, 0) != 0
}
type astring struct {
mu sync.Mutex
v string
}
func (a *astring) get() string {
a.mu.Lock()
p := a.v
a.mu.Unlock()
return p
}
func (a *astring) set(s string) string {
a.mu.Lock()
p := a.v
a.v = s
a.mu.Unlock()
return p
}
type atime struct {
mu sync.Mutex
v time.Time
}
func (a *atime) get() time.Time {
a.mu.Lock()
p := a.v
a.mu.Unlock()
return p
}
func (a *atime) set(t time.Time) time.Time {
a.mu.Lock()
p := a.v
a.v = t
a.mu.Unlock()
return p
}