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|
package sync
import (
"sort"
"sync"
"github.com/anacrolix/missinggo/perf"
)
var (
// Stats on lock usage by call graph.
lockStatsMu sync.Mutex
lockStatsByStack map[lockStackKey]lockStats
)
type (
lockStats = perf.Event
lockStackKey = [32]uintptr
)
type stackLockStats struct {
stack lockStackKey
lockStats
}
func sortedLockTimes() (ret []stackLockStats) {
lockStatsMu.Lock()
for stack, stats := range lockStatsByStack {
ret = append(ret, stackLockStats{stack, stats})
}
lockStatsMu.Unlock()
sort.Slice(ret, func(i, j int) bool {
return ret[i].Total > ret[j].Total
})
return
}
|
