func benchReadSequentialNested(db *bolt.DB, options *BenchOptions, results *BenchResults) error {
return db.View(func(tx *bolt.Tx) error {
var t = time.Now()
for {
var count int
var top = tx.Bucket(benchBucketName)
top.ForEach(func(name, _ []byte) error {
c := top.Bucket(name).Cursor()
for k, v := c.First(); k != nil; k, v = c.Next() {
if v == nil {
return errors.New("invalid value")
}
count++
}
return nil
})
if options.WriteMode == "seq-nest" && count != options.Iterations {
return fmt.Errorf("read seq-nest: iter mismatch: expected %d, got %d", options.Iterations, count)
}
results.ReadOps += count
// Make sure we do this for at least a second.
if time.Since(t) >= time.Second {
break
}
}
return nil
})
}
