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1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // @file |
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15 // @internalComponent |
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16 // |
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17 // |
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18 |
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19 |
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20 #ifndef __CMEMCHUNK_ |
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21 #define __CMEMCHUNK_ |
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22 #include "rmemcell.h" |
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23 |
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24 class RMemCellList |
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25 { |
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26 public: |
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27 RMemCellList () |
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28 { |
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29 Init (); |
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30 } |
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31 RMemCellList ( RMemCell* aFirst, RMemCell* aLast ) |
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32 : iNext ( aFirst ), iLast ( aLast ) |
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33 { |
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34 |
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35 } |
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36 |
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37 void Append ( RMemCell* aPtr ); |
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38 void Append ( RMemCellList& aList ); |
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39 TInt Transfer ( RMemCellList& aList, TInt aSize ); |
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40 |
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41 void Init () |
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42 { |
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43 iNext = iLast = NULL; |
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44 } |
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45 |
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46 TBool IsEmpty () |
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47 { |
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48 return ( iNext == NULL ) ? ETrue : EFalse; |
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49 } |
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50 RMemCell* First () |
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51 { |
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52 return iNext; |
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53 } |
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54 |
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55 RMemCell* Last () |
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56 { |
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57 return iLast; |
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58 } |
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59 |
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60 private: |
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61 RMemCell* iNext; |
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62 RMemCell* iLast; |
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63 }; |
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64 |
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65 class CMemChunk : public CBase |
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66 { |
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67 public: |
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68 static CMemChunk* New ( CChunkAllocator& aAllocator, RChunkPool& aChunkPool, TInt aNumBlocks , TInt aBlockSize ); |
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69 ~CMemChunk (); |
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70 RMemCellList& List () |
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71 { |
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72 return iQueue; |
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73 } |
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74 TInt NumBlocks () |
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75 { |
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76 return iNumBlocks; |
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77 } |
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78 |
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79 private: |
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80 CMemChunk ( CChunkAllocator& aAllocator, TInt aNumBlocks ); |
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81 TAny* operator new (TUint aNumBlocks, TInt aExtra, CChunkAllocator& aAllocator ); |
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82 void operator delete ( TAny* aPtr, TInt aExtra, CChunkAllocator& aAllocator ); |
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83 void CMemChunk::operator delete ( TAny* aPtr ); |
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84 |
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85 private: |
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86 RMemCellList iQueue; |
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87 CChunkAllocator& iChunkAllocator; |
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88 TUint iNumBlocks; |
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89 }; |
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90 |
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91 #endif /*__CMEMCHUNK_*/ |