Shinichiro Hamaji | cedc5c8 | 2015-05-13 17:03:20 +0900 | [diff] [blame] | 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "bufio" |
| 5 | "encoding/binary" |
| 6 | "fmt" |
| 7 | "io" |
| 8 | "os/exec" |
| 9 | "path/filepath" |
| 10 | ) |
| 11 | |
| 12 | func btoi(b bool) int { |
| 13 | if b { |
| 14 | return 1 |
| 15 | } else { |
| 16 | return 0 |
| 17 | } |
| 18 | } |
| 19 | |
| 20 | func sendMsg(w io.Writer, data []byte) { |
| 21 | for len(data) != 0 { |
| 22 | written, err := w.Write(data) |
| 23 | if err == io.EOF { |
| 24 | return |
| 25 | } |
| 26 | if err != nil { |
| 27 | panic(err) |
| 28 | } |
| 29 | data = data[written:] |
| 30 | } |
| 31 | } |
| 32 | |
| 33 | func sendInt(w io.Writer, i int) { |
| 34 | v := int32(i) |
| 35 | binary.Write(w, binary.LittleEndian, &v) |
| 36 | } |
| 37 | |
| 38 | func sendString(w io.Writer, s string) { |
| 39 | sendInt(w, len(s)) |
| 40 | sendMsg(w, []byte(s)) |
| 41 | } |
| 42 | |
| 43 | func sendRunners(w io.Writer, runners []runner) { |
| 44 | sendInt(w, len(runners)) |
| 45 | for _, r := range runners { |
| 46 | sendString(w, r.output) |
| 47 | sendString(w, r.cmd) |
| 48 | sendString(w, r.shell) |
| 49 | sendInt(w, btoi(r.echo)) |
| 50 | sendInt(w, btoi(r.ignoreError)) |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | type ParaResult struct { |
| 55 | output string |
| 56 | stdout string |
| 57 | stderr string |
| 58 | status int |
Shinichiro Hamaji | a680842 | 2015-05-13 18:00:50 +0900 | [diff] [blame] | 59 | signal int |
Shinichiro Hamaji | cedc5c8 | 2015-05-13 17:03:20 +0900 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | func recvInt(r *bufio.Reader) (int, error) { |
| 63 | var v int32 |
| 64 | err := binary.Read(r, binary.LittleEndian, &v) |
| 65 | return int(v), err |
| 66 | } |
| 67 | |
| 68 | func recvString(r *bufio.Reader) (string, error) { |
| 69 | l, err := recvInt(r) |
| 70 | if err != nil { |
| 71 | return "", err |
| 72 | } |
| 73 | buf := make([]byte, l) |
| 74 | read := 0 |
| 75 | for read < len(buf) { |
| 76 | r, err := r.Read(buf[read:]) |
| 77 | if err != nil { |
| 78 | return "", err |
| 79 | } |
| 80 | read += r |
| 81 | } |
| 82 | return string(buf), nil |
| 83 | } |
| 84 | |
| 85 | func recvResult(r *bufio.Reader) (*ParaResult, error) { |
| 86 | output, err := recvString(r) |
| 87 | if err != nil { |
| 88 | return nil, err |
| 89 | } |
| 90 | stdout, err := recvString(r) |
| 91 | if err != nil { |
| 92 | return nil, err |
| 93 | } |
| 94 | stderr, err := recvString(r) |
| 95 | if err != nil { |
| 96 | return nil, err |
| 97 | } |
| 98 | status, err := recvInt(r) |
| 99 | if err != nil { |
| 100 | return nil, err |
| 101 | } |
Shinichiro Hamaji | a680842 | 2015-05-13 18:00:50 +0900 | [diff] [blame] | 102 | signal, err := recvInt(r) |
| 103 | if err != nil { |
| 104 | return nil, err |
| 105 | } |
Shinichiro Hamaji | cedc5c8 | 2015-05-13 17:03:20 +0900 | [diff] [blame] | 106 | return &ParaResult{ |
| 107 | output: output, |
| 108 | stdout: stdout, |
| 109 | stderr: stderr, |
| 110 | status: status, |
Shinichiro Hamaji | a680842 | 2015-05-13 18:00:50 +0900 | [diff] [blame] | 111 | signal: signal, |
Shinichiro Hamaji | cedc5c8 | 2015-05-13 17:03:20 +0900 | [diff] [blame] | 112 | }, nil |
| 113 | } |
| 114 | |
| 115 | type ParaWorker struct { |
| 116 | para *exec.Cmd |
| 117 | paraChan chan *ParaResult |
| 118 | stdin io.WriteCloser |
| 119 | stdout *bufio.Reader |
| 120 | doneChan chan bool |
| 121 | } |
| 122 | |
| 123 | func NewParaWorker(paraChan chan *ParaResult) *ParaWorker { |
| 124 | bin := filepath.Join(katiDir, "para") |
| 125 | para := exec.Command(bin, fmt.Sprintf("-j%d", jobsFlag), "--kati") |
| 126 | stdin, err := para.StdinPipe() |
| 127 | if err != nil { |
| 128 | panic(err) |
| 129 | } |
| 130 | stdout, err := para.StdoutPipe() |
| 131 | if err != nil { |
| 132 | panic(err) |
| 133 | } |
| 134 | err = para.Start() |
| 135 | if err != nil { |
| 136 | panic(err) |
| 137 | } |
| 138 | return &ParaWorker{ |
| 139 | para: para, |
| 140 | paraChan: paraChan, |
| 141 | stdin: stdin, |
| 142 | stdout: bufio.NewReader(stdout), |
| 143 | doneChan: make(chan bool), |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | func (para *ParaWorker) Run() { |
| 148 | for { |
| 149 | r, err := recvResult(para.stdout) |
| 150 | if err == io.EOF { |
| 151 | break |
| 152 | } |
| 153 | if err != nil { |
| 154 | panic(err) |
| 155 | } |
| 156 | para.paraChan <- r |
| 157 | } |
| 158 | para.para.Process.Kill() |
| 159 | para.para.Process.Wait() |
| 160 | para.doneChan <- true |
| 161 | } |
| 162 | |
| 163 | func (para *ParaWorker) Wait() { |
Shinichiro Hamaji | cedc5c8 | 2015-05-13 17:03:20 +0900 | [diff] [blame] | 164 | para.stdin.Close() |
| 165 | <-para.doneChan |
| 166 | } |
| 167 | |
| 168 | func (para *ParaWorker) RunCommand(runners []runner) { |
| 169 | sendRunners(para.stdin, runners) |
| 170 | } |