func tmpfileReadWriter(ch fileChannels) {
tmpFile, err := ioutil.TempFile(".", "product")
if err != nil {
log.Panic(err)
}
length := make([]byte, 8)
var writeCount uint64
for inData := range ch.writeChan {
buf := inData.Bytes()
encodeLength(length, len(buf))
if _, err := tmpFile.Write(length); err != nil {
log.Panic(err)
}
if _, err := tmpFile.Write(buf); err != nil {
log.Panic(err)
}
inData.Clear()
writeCount += 1
}
if newOffset, e := tmpFile.Seek(0, 0); e != nil || newOffset != 0 {
log.Panic(e)
}
var readCount uint64
m := new(gmp.Int)
for {
if _, e := io.ReadFull(tmpFile, length); e != nil {
if e == io.EOF {
break
}
log.Panic(e)
}
buf := make([]byte, decodeLength(length))
if _, e := io.ReadFull(tmpFile, buf); e != nil {
log.Panic(e)
}
readCount += 1
ch.readChan <- m.SetBytes(buf)
m = new(gmp.Int)
}
if writeCount != readCount {
log.Panicf("Didn't write as many as we read: write=%v read=%v", writeCount, readCount)
}
close(ch.readChan)
syscall.Unlink(tmpFile.Name())
// tmpFile.Truncate(0);
}
