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3975
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1 /*
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2 vectorbuffer.cpp
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3 yet another circle buffer
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4
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5 Markus Mertama
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6 */
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7
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8 #include"vectorbuffer.h"
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9
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10
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11
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12 void VectorPanic(TInt aErr, TInt aLine)
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13 {
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14 TBuf<64> b;
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15 b.Format(_L("vector buffer at % d "), aLine);
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16 User::Panic(b, aErr);
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17 }
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18
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19 void TNodeBuffer::TNode::Terminator(TNodeBuffer::TNode* aNode)
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20 {
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21 Mem::Copy(iSucc, &aNode, sizeof(TNode*));
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22 }
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23
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24 TInt TNodeBuffer::TNode::Size() const
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25 {
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26 return reinterpret_cast<const TUint8*>(iSucc) - Ptr();
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27 }
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28
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29 const TUint8* TNodeBuffer::TNode::Ptr() const
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30 {
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31 return reinterpret_cast<const TUint8*>(this) + sizeof(TNode);
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32 }
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33
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34 TNodeBuffer::TNode* TNodeBuffer::TNode::Empty(TUint8* aBuffer)
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35 {
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36 TNode* node = reinterpret_cast<TNode*>(aBuffer);
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37 node->iSucc = node + 1;
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38 return node;
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39 }
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40
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41 TNodeBuffer::TNode* TNodeBuffer::TNode::New(TNode* aPred, const TDesC8& aData)
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42 {
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43 TNode* node = aPred->Size() == 0 ? aPred : aPred->iSucc;
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44
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45
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46 TUint8* start = reinterpret_cast<TUint8*>(node) + sizeof(TNode);
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47 node->iSucc = reinterpret_cast<TNode*>(start + aData.Size());
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48 node->iSucc->iSucc = NULL; //terminator
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49
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50 __ASSERT_DEBUG(node->Size() == aData.Size(), VECPANIC(KErrCorrupt));
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51
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52 Mem::Copy(start, aData.Ptr(), aData.Size());
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53 return node;
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54 }
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55
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56
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57
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58
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59
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60
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61
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62 |
