prysm-pulse/beacon-chain/db/kv/state_summary_cache.go

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package kv
import (
"sync"
ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
)
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const stateSummaryCachePruneCount = 128
// stateSummaryCache caches state summary object.
type stateSummaryCache struct {
initSyncStateSummaries map[[32]byte]*ethpb.StateSummary
initSyncStateSummariesLock sync.RWMutex
}
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// newStateSummaryCache creates a new state summary cache.
func newStateSummaryCache() *stateSummaryCache {
return &stateSummaryCache{
initSyncStateSummaries: make(map[[32]byte]*ethpb.StateSummary),
}
}
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// put saves a state summary to the initial sync state summaries cache.
func (c *stateSummaryCache) put(r [32]byte, b *ethpb.StateSummary) {
c.initSyncStateSummariesLock.Lock()
defer c.initSyncStateSummariesLock.Unlock()
c.initSyncStateSummaries[r] = b
}
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// has checks if a state summary exists in the initial sync state summaries cache using the root
// of the block.
func (c *stateSummaryCache) has(r [32]byte) bool {
c.initSyncStateSummariesLock.RLock()
defer c.initSyncStateSummariesLock.RUnlock()
_, ok := c.initSyncStateSummaries[r]
return ok
}
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// delete state summary in cache.
func (c *stateSummaryCache) delete(r [32]byte) {
c.initSyncStateSummariesLock.Lock()
defer c.initSyncStateSummariesLock.Unlock()
delete(c.initSyncStateSummaries, r)
}
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// get retrieves a state summary from the initial sync state summaries cache using the root of
// the block.
func (c *stateSummaryCache) get(r [32]byte) *ethpb.StateSummary {
c.initSyncStateSummariesLock.RLock()
defer c.initSyncStateSummariesLock.RUnlock()
b := c.initSyncStateSummaries[r]
return b
}
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// len retrieves the state summary count from the state summaries cache.
func (c *stateSummaryCache) len() int {
c.initSyncStateSummariesLock.RLock()
defer c.initSyncStateSummariesLock.RUnlock()
return len(c.initSyncStateSummaries)
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}
// GetAll retrieves all the beacon state summaries from the initial sync state summaries cache, the returned
// state summaries are unordered.
func (c *stateSummaryCache) getAll() []*ethpb.StateSummary {
c.initSyncStateSummariesLock.RLock()
defer c.initSyncStateSummariesLock.RUnlock()
summaries := make([]*ethpb.StateSummary, 0, len(c.initSyncStateSummaries))
for _, b := range c.initSyncStateSummaries {
summaries = append(summaries, b)
}
return summaries
}
// Clear clears out the initial sync state summaries cache.
func (c *stateSummaryCache) clear() {
c.initSyncStateSummariesLock.Lock()
defer c.initSyncStateSummariesLock.Unlock()
c.initSyncStateSummaries = make(map[[32]byte]*ethpb.StateSummary)
}