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32 package TransactionalIO.core;
34 import java.util.Collections;
35 import java.util.HashMap;
37 import java.util.concurrent.ConcurrentHashMap;
38 import java.util.concurrent.atomic.AtomicLong;
40 /* @author Navid Farri
42 public class GlobalINodeState {
45 private ConcurrentHashMap conlockmap = new ConcurrentHashMap(16);
47 protected GlobalLength commitedfilesize;
48 protected int seqNum = 0;
49 protected INode inode;
51 public GlobalINodeState() {
57 protected GlobalINodeState(INode inode, long length) {
59 commitedfilesize = new GlobalLength(length);
69 public BlockDataStructure getBlockDataStructure(Integer blocknumber) {
70 BlockDataStructure rec = (BlockDataStructure)conlockmap.get(blocknumber);
72 // record does not yet exist
73 BlockDataStructure newRec = new BlockDataStructure(inode, blocknumber);
74 rec = (BlockDataStructure)conlockmap.putIfAbsent(blocknumber, newRec);
76 // put succeeded, use new value