0
|
1 |
// Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
|
|
2 |
// All rights reserved.
|
|
3 |
// This component and the accompanying materials are made available
|
|
4 |
// under the terms of the License "Eclipse Public License v1.0"
|
|
5 |
// which accompanies this distribution, and is available
|
|
6 |
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
|
|
7 |
//
|
|
8 |
// Initial Contributors:
|
|
9 |
// Nokia Corporation - initial contribution.
|
|
10 |
//
|
|
11 |
// Contributors:
|
|
12 |
//
|
|
13 |
// Description:
|
|
14 |
// e32\include\kernel\smap.h
|
|
15 |
|
|
16 |
#ifndef SMAP_H
|
|
17 |
#define SMAP_H
|
|
18 |
|
|
19 |
class DMutex;
|
|
20 |
|
|
21 |
/**
|
|
22 |
@file
|
|
23 |
@internalComponent
|
|
24 |
@prototype
|
|
25 |
*/
|
|
26 |
|
|
27 |
/**
|
|
28 |
SMap uses a binary search to perform quick lookups (finds) whilst Add and
|
|
29 |
Remove and Iterating is happening concurrently. This container is optimised
|
|
30 |
for fast lookups.
|
|
31 |
|
|
32 |
Add, Remove and Iterator check that the caller has the heavy wait Mutex lock
|
|
33 |
held.
|
|
34 |
|
|
35 |
Find methods use the fast lock whilst performing look ups.
|
|
36 |
*/
|
|
37 |
|
|
38 |
class SMap
|
|
39 |
{
|
|
40 |
public:
|
|
41 |
SMap(NFastMutex* aFastLock, DMutex* aSlowLock);
|
|
42 |
~SMap();
|
|
43 |
|
|
44 |
TInt Add(TUint aKey, TAny* aObject);
|
|
45 |
TAny* Remove(TUint aKey);
|
|
46 |
TAny* Find(TUint aKey);
|
|
47 |
|
|
48 |
FORCE_INLINE TUint Count()
|
|
49 |
{
|
|
50 |
return iCount;
|
|
51 |
}
|
|
52 |
|
|
53 |
class TEntry
|
|
54 |
{
|
|
55 |
public:
|
|
56 |
TUint iKey;
|
|
57 |
TAny* iObj;
|
|
58 |
};
|
|
59 |
|
|
60 |
/**
|
|
61 |
An iterator index.
|
|
62 |
*/
|
|
63 |
|
|
64 |
class TIterator
|
|
65 |
{
|
|
66 |
public:
|
|
67 |
FORCE_INLINE TIterator(SMap& aMap) : iMap(aMap), iPos(0)
|
|
68 |
{
|
|
69 |
}
|
|
70 |
|
|
71 |
void Reset();
|
|
72 |
|
|
73 |
TEntry* Next();
|
|
74 |
|
|
75 |
private:
|
|
76 |
SMap& iMap;
|
|
77 |
TUint iPos;
|
|
78 |
TInt iSpare1;
|
|
79 |
};
|
|
80 |
private:
|
|
81 |
FORCE_INLINE void FastLock()
|
|
82 |
{
|
|
83 |
NKern::FMWait(iFastLock);
|
|
84 |
}
|
|
85 |
|
|
86 |
FORCE_INLINE void FastUnlock()
|
|
87 |
{
|
|
88 |
NKern::FMSignal(iFastLock);
|
|
89 |
}
|
|
90 |
|
|
91 |
TUint FindIndex(TUint aKey);
|
|
92 |
|
|
93 |
private:
|
|
94 |
TUint iCount;
|
|
95 |
TEntry* iList;
|
|
96 |
NFastMutex* iFastLock;
|
|
97 |
DMutex* iSlowLock;
|
|
98 |
TInt iSpare1;
|
|
99 |
|
|
100 |
friend class TIterator;
|
|
101 |
};
|
|
102 |
|
|
103 |
|
|
104 |
|
|
105 |
#endif // SMAP_H
|