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1
11 package org.eclipse.core.internal.indexing;
12
13 import java.util.HashMap  ;
14 import java.util.Map ;
15
16 public class Reservation {
17
18 protected int freeSlots = 0;
19 protected int freeSpace = 0;
20 protected int reservedSpace = 0;
21 protected int initialEntry = 0;
22 protected Map reservedItems = new HashMap ();
23
24 public Reservation(int freeSpace, int freeSlots, int initialEntry) {
25 this.freeSlots = freeSlots;
26 this.freeSpace = freeSpace;
27 this.initialEntry = initialEntry;
28 }
29
30 public void add(int slot, int bytes) {
31 reservedSpace += bytes;
32 reservedItems.put(new Integer (slot), new Integer (bytes));
33 }
34
35 public void remove(int slot) {
36 Integer bytes = (Integer ) reservedItems.remove(new Integer (slot));
37 if (bytes == null)
38 return;
39 reservedSpace -= bytes.intValue();
40 }
41
42 boolean contains(int slot) {
43 return reservedItems.containsKey(new Integer (slot));
44 }
45
46 int getFreeSpace() {
47 if (reservedItems.size() >= freeSlots)
48 return 0;
49 return Math.max(0, freeSpace - reservedSpace);
50 }
51
52 public int getInitialEntry() {
53 return initialEntry;
54 }
55
56 public void setInitialEntry(int n) {
57 initialEntry = n;
58 }
59
60 }
61 |
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