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1 // Copyright (c) 2005-2009 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 // Sets the read position. |
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15 // |
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16 // |
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17 |
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18 inline void HIpcBuf::SetPos(TRead, TInt aPos) |
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19 { |
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20 iRPos = aPos; |
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21 } |
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22 |
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23 /** |
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24 Sets the write position. |
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25 */ |
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26 inline void HIpcBuf::SetPos(TWrite, TInt aPos) |
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27 { |
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28 iWPos = aPos; |
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29 } |
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30 |
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31 /** |
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32 @return Read position |
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33 */ |
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34 inline TInt HIpcBuf::Pos(TRead) const |
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35 { |
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36 return iRPos; |
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37 } |
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38 |
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39 /** |
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40 @return Write position |
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41 */ |
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42 inline TInt HIpcBuf::Pos(TWrite) const |
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43 { |
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44 return iWPos; |
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45 } |
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46 |
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47 /** |
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48 Moves the read position. |
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49 */ |
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50 inline TInt HIpcBuf::MovePos(TRead, TInt aOffset) |
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51 { |
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52 return iRPos += aOffset; |
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53 } |
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54 |
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55 /** |
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56 @return The difference between read and write positions. |
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57 */ |
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58 inline TInt HIpcBuf::Lag(TRead) const |
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59 { |
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60 return Ptr(ERead) - End(ERead); |
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61 } |
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62 |
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63 /** |
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64 @return The difference between the write position and the beginning of the buffer. |
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65 */ |
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66 inline TInt HIpcBuf::Lag(TWrite) const |
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67 { |
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68 return Ptr(EWrite) - iBuf.iData; |
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69 } |
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70 |
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71 inline TInt HIpcBuf::Mark(TRead) const |
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72 { |
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73 return Pos(ERead) + Lag(ERead); |
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74 } |
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75 |
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76 inline TInt HIpcBuf::Mark(TWrite) const |
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77 { |
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78 return Pos(EWrite) + Lag(EWrite); |
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79 } |