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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 
31 class THashTable;
32 
33 
34 class THashList : public TList {
35 
36 protected:
37  THashTable *fTable; //Hashtable used for quick lookup of objects
38 
39 private:
40  THashList(const THashList&); // not implemented
41  THashList& operator=(const THashList&); // not implemented
42 
43 public:
46  virtual ~THashList();
47  Float_t AverageCollisions() const;
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
THashList::THashList
THashList(const THashList &)
THashList::AddAfter
void AddAfter(const TObject *after, TObject *obj)
Insert object after object after in the list.
Definition: THashList.cxx:143
TCollection::kInitHashTableCapacity
@ kInitHashTableCapacity
Definition: TCollection.h:157
THashList::GetListForObject
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::operator=
THashList & operator=(const THashList &)
Float_t
float Float_t
Definition: RtypesCore.h:57
THashList::UseRWLock
bool UseRWLock()
Set this collection to use a RW lock upon access, making it thread safe.
Definition: THashList.cxx:409
TList.h
THashList::AddBefore
void AddBefore(const TObject *before, TObject *obj)
Insert object before object before in the list.
Definition: THashList.cxx:121
Option_t
const typedef char Option_t
Definition: RtypesCore.h:66
THashList::AverageCollisions
Float_t AverageCollisions() const
Return the average collision rate.
Definition: THashList.cxx:178
THashTable
Definition: THashTable.h:35
THashList
Definition: THashList.h:34
THashList::FindObject
TObject * FindObject(const char *name) const
Find object using its name.
Definition: THashList.cxx:262
THashList::AddLast
void AddLast(TObject *obj)
Add object at the end of the list.
Definition: THashList.cxx:95
THashList::Rehash
void Rehash(Int_t newCapacity)
Rehash the hashlist.
Definition: THashList.cxx:368
THashList::Remove
TObject * Remove(TObject *obj)
Remove object from the list.
Definition: THashList.cxx:378
THashList::Delete
void Delete(Option_t *option="")
Remove all objects from the list AND delete all heap based objects.
Definition: THashList.cxx:207
THashList::fTable
THashTable * fTable
Definition: THashList.h:37
THashList::Clear
void Clear(Option_t *option="")
Remove all objects from the list.
Definition: THashList.cxx:189
TObject
Definition: TObject.h:37
ClassDef
#define ClassDef(name, id)
Definition: Rtypes.h:325
name
char name[80]
Definition: TGX11.cxx:110
THashList::AddAt
void AddAt(TObject *obj, Int_t idx)
Insert object at location idx in the list.
Definition: THashList.cxx:165
THashList::AddFirst
void AddFirst(TObject *obj)
Add object at the beginning of the list.
Definition: THashList.cxx:69
TList
Definition: TList.h:44
THashList::~THashList
virtual ~THashList()
Delete a hashlist.
Definition: THashList.cxx:60
int
THashList::RecursiveRemove
void RecursiveRemove(TObject *obj)
Remove object from this collection and recursively remove the object from all other objects (and coll...
Definition: THashList.cxx:310