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40 lines
933 B
Go
40 lines
933 B
Go
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package mutexes
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import "sync"
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// WithSafety wrapps the supplied Mutex to protect unlock fns
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// from being called multiple times
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func WithSafety(mu Mutex) Mutex {
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return &safeMutex{mu: mu}
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}
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// WithSafetyRW wrapps the supplied RWMutex to protect unlock
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// fns from being called multiple times
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func WithSafetyRW(mu RWMutex) RWMutex {
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return &safeRWMutex{mu: mu}
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}
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// safeMutex simply wraps a Mutex to add multi-unlock safety
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type safeMutex struct{ mu Mutex }
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func (mu *safeMutex) Lock() func() {
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unlock := mu.mu.Lock()
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once := sync.Once{}
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return func() { once.Do(unlock) }
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}
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// safeRWMutex simply wraps a RWMutex to add multi-unlock safety
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type safeRWMutex struct{ mu RWMutex }
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func (mu *safeRWMutex) Lock() func() {
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unlock := mu.mu.Lock()
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once := sync.Once{}
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return func() { once.Do(unlock) }
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}
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func (mu *safeRWMutex) RLock() func() {
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unlock := mu.mu.RLock()
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once := sync.Once{}
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return func() { once.Do(unlock) }
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}
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