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package mount
type WriterPattern struct { isSequentialCounter int64 lastWriteStopOffset int64 chunkSize int64 }
// For streaming write: only cache the first chunk
// For random write: fall back to temp file approach
// writes can only change from streaming mode to non-streaming mode
func NewWriterPattern(chunkSize int64) *WriterPattern { return &WriterPattern{ isSequentialCounter: 0, lastWriteStopOffset: 0, chunkSize: chunkSize, } }
func (rp *WriterPattern) MonitorWriteAt(offset int64, size int) { if rp.lastWriteStopOffset == offset { rp.isSequentialCounter++ } else { rp.isSequentialCounter-- } rp.lastWriteStopOffset = offset + int64(size) }
func (rp *WriterPattern) IsSequentialMode() bool { return rp.isSequentialCounter >= 0 }
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