( datasetPath string, mt *mtree.DagTree)
| 89 | } |
| 90 | |
| 91 | func processDuringRead( |
| 92 | datasetPath string, mt *mtree.DagTree) { |
| 93 | |
| 94 | f, err := os.Open(datasetPath) |
| 95 | if err != nil { |
| 96 | log.Fatal(err) |
| 97 | } |
| 98 | r := bufio.NewReader(f) |
| 99 | buf := [128]byte{} |
| 100 | // ignore first 8 bytes magic number at the beginning |
| 101 | // of dataset. See more at https://gopkg.in/ethereum/wiki/wiki/Ethash-DAG-Disk-Storage-Format |
| 102 | _, err = io.ReadFull(r, buf[:8]) |
| 103 | if err != nil { |
| 104 | log.Fatal(err) |
| 105 | } |
| 106 | var i uint32 = 0 |
| 107 | for { |
| 108 | n, err := io.ReadFull(r, buf[:128]) |
| 109 | if n == 0 { |
| 110 | if err == nil { |
| 111 | continue |
| 112 | } |
| 113 | if err == io.EOF { |
| 114 | break |
| 115 | } |
| 116 | log.Fatal(err) |
| 117 | } |
| 118 | if n != 128 { |
| 119 | log.Fatal("Malformed dataset") |
| 120 | } |
| 121 | mt.Insert(smartpool.Word(buf), i) |
| 122 | if err != nil && err != io.EOF { |
| 123 | log.Fatal(err) |
| 124 | } |
| 125 | i++ |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | func (s *Share) buildDagTree() { |
| 130 | indices := ethash.Instance.GetVerificationIndices(s) |
no test coverage detected