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THashList.h
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1// @(#)root/cont:$Id$
2// Author: Fons Rademakers 10/08/95
3
4/*************************************************************************
5 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11
12#ifndef ROOT_THashList
13#define ROOT_THashList
14
15
16//////////////////////////////////////////////////////////////////////////
17// //
18// THashList //
19// //
20// THashList implements a hybrid collection class consisting of a //
21// hash table and a list to store TObject's. The hash table is used for //
22// quick access and lookup of objects while the list allows the objects //
23// to be ordered. The hash value is calculated using the value returned //
24// by the TObject's Hash() function. Each class inheriting from TObject //
25// can override Hash() as it sees fit. //
26// //
27//////////////////////////////////////////////////////////////////////////
28
29#include "TList.h"
30
31class THashTable;
32
33
34class THashList : public TList {
35
36protected:
37 THashTable *fTable; //Hashtable used for quick lookup of objects
38
39private:
40 THashList(const THashList&); // not implemented
41 THashList& operator=(const THashList&); // not implemented
42
43public:
46 virtual ~THashList();
48 void Clear(Option_t *option="");
49 void Delete(Option_t *option="");
50
51 TObject *FindObject(const char *name) const;
52 TObject *FindObject(const TObject *obj) const;
53
54 const TList *GetListForObject(const char *name) const;
55 const TList *GetListForObject(const TObject *obj) const;
56
57 void AddFirst(TObject *obj);
58 void AddFirst(TObject *obj, Option_t *opt);
59 void AddLast(TObject *obj);
60 void AddLast(TObject *obj, Option_t *opt);
61 void AddAt(TObject *obj, Int_t idx);
62 void AddAfter(const TObject *after, TObject *obj);
63 void AddAfter(TObjLink *after, TObject *obj);
64 void AddBefore(const TObject *before, TObject *obj);
65 void AddBefore(TObjLink *before, TObject *obj);
66 void RecursiveRemove(TObject *obj);
67 void Rehash(Int_t newCapacity);
68 TObject *Remove(TObject *obj);
69 TObject *Remove(TObjLink *lnk);
70 bool UseRWLock();
71
72 ClassDef(THashList,0) //Doubly linked list with hashtable for lookup
73};
74
75#endif
int Int_t
Definition: RtypesCore.h:43
float Float_t
Definition: RtypesCore.h:55
const char Option_t
Definition: RtypesCore.h:64
#define ClassDef(name, id)
Definition: Rtypes.h:322
char name[80]
Definition: TGX11.cxx:109
@ kInitHashTableCapacity
Definition: TCollection.h:157
THashList implements a hybrid collection class consisting of a hash table and a list to store TObject...
Definition: THashList.h:34
TObject * FindObject(const char *name) const
Find object using its name.
Definition: THashList.cxx:262
void RecursiveRemove(TObject *obj)
Remove object from this collection and recursively remove the object from all other objects (and coll...
Definition: THashList.cxx:310
void Rehash(Int_t newCapacity)
Rehash the hashlist.
Definition: THashList.cxx:368
virtual ~THashList()
Delete a hashlist.
Definition: THashList.cxx:60
void AddBefore(const TObject *before, TObject *obj)
Insert object before object before in the list.
Definition: THashList.cxx:121
bool UseRWLock()
Set this collection to use a RW lock upon access, making it thread safe.
Definition: THashList.cxx:409
THashTable * fTable
Definition: THashList.h:37
void AddAt(TObject *obj, Int_t idx)
Insert object at location idx in the list.
Definition: THashList.cxx:165
TObject * Remove(TObject *obj)
Remove object from the list.
Definition: THashList.cxx:378
const TList * GetListForObject(const char *name) const
Return the THashTable's list (bucket) in which obj can be found based on its hash; see THashTable::Ge...
Definition: THashList.cxx:283
THashList(const THashList &)
void Clear(Option_t *option="")
Remove all objects from the list.
Definition: THashList.cxx:189
void AddFirst(TObject *obj)
Add object at the beginning of the list.
Definition: THashList.cxx:69
THashList & operator=(const THashList &)
void Delete(Option_t *option="")
Remove all objects from the list AND delete all heap based objects.
Definition: THashList.cxx:207
Float_t AverageCollisions() const
Return the average collision rate.
Definition: THashList.cxx:178
void AddAfter(const TObject *after, TObject *obj)
Insert object after object after in the list.
Definition: THashList.cxx:143
void AddLast(TObject *obj)
Add object at the end of the list.
Definition: THashList.cxx:95
THashTable implements a hash table to store TObject's.
Definition: THashTable.h:35
A doubly linked list.
Definition: TList.h:44
Mother of all ROOT objects.
Definition: TObject.h:37