53 lines
773 B
Go
53 lines
773 B
Go
package main
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import (
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"sync"
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"time"
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)
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const (
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CacheTotalKnownBlocksAndMiners = iota
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totalSize
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)
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var cache = make([]*cachedResult, totalSize)
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var cacheLock sync.RWMutex
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type cachedResult struct {
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t time.Time
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result any
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}
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func cacheResult(k uint, cacheTime time.Duration, result func() any) any {
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if k >= totalSize {
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return result()
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}
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if r := func() any {
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if cacheTime > 0 {
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cacheLock.RLock()
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defer cacheLock.RUnlock()
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if r := cache[k]; r != nil && r.t.Add(cacheTime).After(time.Now()) {
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return r.result
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}
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}
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return nil
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}(); r != nil {
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return r
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}
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r := result()
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if cacheTime > 0 && r != nil {
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cacheLock.Lock()
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defer cacheLock.Unlock()
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cache[k] = &cachedResult{
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t: time.Now(),
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result: r,
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}
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}
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return r
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}
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