37 lines
517 B
Go
37 lines
517 B
Go
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// +build !change
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package slow
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import (
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"sync"
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"sync/atomic"
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"time"
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)
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type Value struct {
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mu sync.Mutex
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value interface{}
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readRunning int32
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}
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func (s *Value) Load() interface{} {
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if atomic.SwapInt32(&s.readRunning, 1) == 1 {
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panic("another load is running")
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}
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defer atomic.StoreInt32(&s.readRunning, 0)
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s.mu.Lock()
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value := s.value
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s.mu.Unlock()
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time.Sleep(time.Millisecond)
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return value
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}
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func (s *Value) Store(v interface{}) {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.value = v
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}
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