Method get

segment.go:238–255

(key, buf []byte, hashVal uint64, peek bool)

}

func (seg *segment) get(key, buf []byte, hashVal uint64, peek bool) (value []byte, expireAt uint32, err error) {
	hdr, ptrOffset, err := seg.locate(key, hashVal, peek)
	if err != nil {
		return
	}
	expireAt = hdr.expireAt
	if cap(buf) >= int(hdr.valLen) {
		value = buf[:hdr.valLen]
	} else {
		value = make([]byte, hdr.valLen)
	}

	seg.rb.ReadAt(value, ptrOffset+ENTRY_HDR_SIZE+int64(hdr.keyLen))
	if !peek {
		atomic.AddInt64(&seg.hitCount, 1)
	}
	return
}

// view provides zero-copy access to the element's value, without copying to
// an intermediate buffer.