36 lines
658 B
Go
36 lines
658 B
Go
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package market
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import (
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"sync"
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)
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type MarketCache[T any] struct {
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store T
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lock sync.RWMutex
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}
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func NewCache[T any](store T) *MarketCache[T] {
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var cache MarketCache[T]
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cache.store = store
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return &cache
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}
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func Read[T any, R any](cache *MarketCache[T], reader func(store T) R) R {
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cache.lock.RLock()
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defer cache.lock.RUnlock()
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return reader(cache.store)
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}
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func Write[T any](cache *MarketCache[T], writer func(store T) T) *MarketCache[T] {
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cache.lock.Lock()
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defer cache.lock.Unlock()
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cache.store = writer(cache.store)
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return cache
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}
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func (cache *MarketCache[T]) Get() T {
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cache.lock.RLock()
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defer cache.lock.RUnlock()
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return cache.store
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}
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