65 lines
1.3 KiB
Go
65 lines
1.3 KiB
Go
package torrent
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import (
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"container/heap"
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"fmt"
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"unsafe"
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"github.com/anacrolix/multiless"
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)
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func worseConn(l, r *peer) bool {
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less, ok := multiless.New().Bool(
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l.useful(), r.useful()).CmpInt64(
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l.lastHelpful().Sub(r.lastHelpful()).Nanoseconds()).CmpInt64(
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l.completedHandshake.Sub(r.completedHandshake).Nanoseconds()).LazySameLess(
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func() (same, less bool) {
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lpp, err := l.peerPriority()
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if err != nil {
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same = true
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return
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}
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rpp, err := r.peerPriority()
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if err != nil {
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same = true
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return
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}
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return lpp == rpp, lpp < rpp
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}).Uintptr(
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uintptr(unsafe.Pointer(l)), uintptr(unsafe.Pointer(r)),
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).LessOk()
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if !ok {
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panic(fmt.Sprintf("cannot differentiate %#v and %#v", l, r))
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}
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return less
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}
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type worseConnSlice struct {
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conns []*PeerConn
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}
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var _ heap.Interface = &worseConnSlice{}
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func (me worseConnSlice) Len() int {
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return len(me.conns)
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}
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func (me worseConnSlice) Less(i, j int) bool {
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return worseConn(&me.conns[i].peer, &me.conns[j].peer)
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}
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func (me *worseConnSlice) Pop() interface{} {
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i := len(me.conns) - 1
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ret := me.conns[i]
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me.conns = me.conns[:i]
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return ret
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}
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func (me *worseConnSlice) Push(x interface{}) {
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me.conns = append(me.conns, x.(*PeerConn))
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}
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func (me worseConnSlice) Swap(i, j int) {
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me.conns[i], me.conns[j] = me.conns[j], me.conns[i]
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}
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