Examples of krati.core.segment.Segment

krati.core.segment.Segment
Segment Storage Version: 1 The segment header section uses the first 128 bytes, but only the first 16 bytes are used. The segment data section stores varying-length data in the format of repeated [length][data ... ...]. Header Section: 0x00 long -- 8 bytes lastForcedTime 0x08 long -- 8 bytes storageVersion 0x10 long -- 8 bytes reserved 0x18 long -- 8 bytes reserved 0x20 long -- 8 bytes reserved 0x28 long -- 8 bytes reserved 0x30 long -- 8 bytes reserved 0x38 long -- 8 bytes reserved 0x40 long -- 8 bytes reserved 0x48 long -- 8 bytes reserved 0x50 long -- 8 bytes reserved 0x58 long -- 8 bytes reserved 0x60 long -- 8 bytes reserved 0x68 long -- 8 bytes reserved 0x70 long -- 8 bytes reserved 0x78 long -- 8 bytes reserved Data Section: [length1][data1 ... ...] [length2][data2 ... ... ... ... ... ...] [length3][data3 ... ... ... ...] [length4][data4 ...] ... @author jwu

            
            // no data found
            if(segPos < Segment.dataStartPosition) return -1;
            
            // get data segment
            Segment seg = _segmentManager.getSegment(segInd);
            if(seg == null) return -1;
            
            // read data length
            int size = _addressFormat.getDataSize(address);
            return (size == 0) ? seg.readInt(segPos) : size;
        } catch(Exception e) {
            _log.warn(e.getMessage());
            return -1;
        }
    }

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            // no data found
            if(segPos < Segment.dataStartPosition) return null;
            
            // get data segment
            Segment seg = _segmentManager.getSegment(segInd);
            if(seg == null) return null;
            
            // read data length
            int size = _addressFormat.getDataSize(address);
            int len = (size == 0) ? seg.readInt(segPos) : size;
            
            // read data into byte array
            byte[] data = new byte[len];
            if (len > 0) {
                seg.read(segPos + 4, data);
            }
            
            return data;
        } catch(Exception e) {
            _log.warn(e.getMessage());

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            // no data found
            if(segPos < Segment.dataStartPosition) return -1;
            
            // get data segment
            Segment seg = _segmentManager.getSegment(segInd);
            if(seg == null) return -1;
            
            // read data length
            int size = _addressFormat.getDataSize(address);
            int len = (size == 0) ? seg.readInt(segPos) : size;
            
            // read data into byte array
            if (len > 0) {
                seg.read(segPos + 4, data, offset, len);
            }
            
            return len;
        } catch(Exception e) {
            _log.warn(e.getMessage());

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            // no data found
            if(segPos < Segment.dataStartPosition) return -1;
            
            // get data segment
            Segment seg = _segmentManager.getSegment(segInd);
            if(seg == null) return -1;
            
            // read data length
            int size = _addressFormat.getDataSize(address);
            int len = (size == 0) ? seg.readInt(segPos) : size;
            
            // read data into byte array
            if (len > 0) {
                len = Math.min(len, dst.length);
                seg.read(segPos + 4, dst, 0, len);
            }
            
            return len;
        } catch(Exception e) {
            _log.warn(e.getMessage());

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            // no data found
            if(segPos < Segment.dataStartPosition) return -1;
            
            // get data segment
            Segment seg = _segmentManager.getSegment(segInd);
            if(seg == null) return -1;
            
            // read data length
            int size = _addressFormat.getDataSize(address);
            int len = (size == 0) ? seg.readInt(segPos) : size;
            
            // read data into byte array
            if (len > 0) {
                if (len > offset) {
                    len = Math.min(len - offset, dst.length);
                    seg.read(segPos + 4 + offset, dst, 0, len);
                } else {
                    return -1;
                }
            }

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            // no data found
            if(segPos < Segment.dataStartPosition) return -1;
            
            // get data segment
            Segment seg = _segmentManager.getSegment(segInd);
            if(seg == null) return -1;
            
            // read data length
            int size = _addressFormat.getDataSize(address);
            int len = (size == 0) ? seg.readInt(segPos) : size;
            
            // transfer data to a writable channel
            if (len > 0) {
                seg.transferTo(segPos + 4, len, channel);
            }
            
            return len;
        } catch(Exception e) {
            return -1;

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                // submit current segment index buffer
                submitSegmentIndexBuffer();
                
                // update next segment and segment index buffer
                Segment nextSegment = _compactor.peekTargetSegment();
                if(nextSegment != null) {
                    persist();
                    
                    _segment = nextSegment;
                    _compactor.pollTargetSegment();

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krati.core.array.SimpleDataArray

krati.core.array.SimpleDataArrayCompactor

test.perf.SegmentPerf

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