blob: 278b531f354899cfc2984a3a3055e3f262248917 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#ifndef __DATABASE_REFERENCES_H__
#define __DATABASE_REFERENCES_H__
class SegmentData;
class RefFrom;
class RefTo;
/** The reference system, where the database will be able to hold references from and to memory pointers.
*/
class RefFrom : public Base {
public:
RefFrom(RefTo * refTo, SegmentRefData * data);
~RefFrom()
SegmentRefData * getRefSegData() { return refTo->getSegRefData(); }
SegmentRefData * getSegRefData() { return data; }
RefFrom * getNext() { return next; }
private:
RefTo * refTo;
RefFrom * next, * prev;
SegmentRefData * data;
};
class RefTo : public Base {
public:
RefTo(Uint32 ptr, SegmentRefData * data);
~RefTo();
SegmentRefData * getRefSegData() { return refFrom->getSegRefData(); }
SegmentRefData * getSegRefData() { return data; }
private:
RefFrom * refFrom;
SegmentRefData * data;
};
class SegmentRefData : public Base {
public:
SegmentRefData(Uint32 ptr, Segment * seg);
~SegmentRefData()
Uint32 getPtr() { return ptr; }
Segment * getSegment() { return seg; }
SegmentRefData * getSegmentRefData(Uint32 ptr) { return seg->getSegmentRefData(ptr); }
RefTo * getRefTo() { return refTo; }
RefFrom * getRefFrom() { return firstRefFrom; }
void setRefTo(RefTo * newRefTo) { refTo = newRefTo; checkDestroy(); }
void setFirstRefFrom(RefFrom * newFirstRefFrom) { firstRefFrom = newFirstRefFrom; checkDestroy(); }
private:
RefTo * refTo;
RefFrom * firstRefFrom;
Uint32 ptr;
Segment * seg;
void checkDestroy() { if (!refTo && !firstRefFrom) delete this; }
};
#endif
|