forked from cerc-io/plugeth
consensus/clique: replace bubble sort by golang stable sort
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afd8b84706
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@ -19,6 +19,7 @@ package clique
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import (
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"bytes"
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"encoding/json"
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"sort"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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@ -56,6 +57,13 @@ type Snapshot struct {
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Tally map[common.Address]Tally `json:"tally"` // Current vote tally to avoid recalculating
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}
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// signers implements the sort interface to allow sorting a list of addresses
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type signers []common.Address
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func (s signers) Len() int { return len(s) }
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func (s signers) Less(i, j int) bool { return bytes.Compare(s[i][:], s[j][:]) < 0 }
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func (s signers) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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// newSnapshot creates a new snapshot with the specified startup parameters. This
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// method does not initialize the set of recent signers, so only ever use if for
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// the genesis block.
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@ -286,18 +294,12 @@ func (s *Snapshot) apply(headers []*types.Header) (*Snapshot, error) {
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// signers retrieves the list of authorized signers in ascending order.
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func (s *Snapshot) signers() []common.Address {
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signers := make([]common.Address, 0, len(s.Signers))
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for signer := range s.Signers {
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signers = append(signers, signer)
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sigs := make([]common.Address, 0, len(s.Signers))
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for sig := range s.Signers {
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sigs = append(sigs, sig)
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}
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for i := 0; i < len(signers); i++ {
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for j := i + 1; j < len(signers); j++ {
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if bytes.Compare(signers[i][:], signers[j][:]) > 0 {
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signers[i], signers[j] = signers[j], signers[i]
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}
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}
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}
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return signers
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sort.Sort(signers(sigs))
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return sigs
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}
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// inturn returns if a signer at a given block height is in-turn or not.
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