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1 // Copyright (c) 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 // |
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15 |
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16 #include "es_commsbuf_internal.h" |
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17 #include <comms-infras/commsbufasyncrequest.h> |
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18 #include "commsbufpondintf.h" |
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19 |
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20 EXPORT_C RCommsBufPond::RCommsBufPond() |
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21 :iPondImpl(NULL) |
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22 /** |
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23 The constructor |
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24 */ |
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25 { |
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26 |
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27 |
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28 } |
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29 |
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30 EXPORT_C RCommsBuf* RCommsBufPond::Alloc(TInt aSize, TInt aMinBufSize, TInt aMaxBufSize) |
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31 /** |
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32 Allocates memory for a RCommsBuf object. More than one buffer may be allocated and linked, |
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33 if the requested buffer size doesn't directly satisfy with the configured buffer sizes |
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34 |
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35 @param aSize The requested total size |
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36 @param aMinBufSize The size that the allocated buffer must atleast have |
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37 @param aMinBufSize The size that the allocated buffer can have |
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38 |
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39 @return Allocated RCommsBuf pointer on success otherwise NULL |
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40 */ |
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41 { |
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42 return iPondImpl->Alloc(aSize, aMinBufSize, aMaxBufSize); |
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43 } |
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44 |
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45 EXPORT_C TInt RCommsBufPond::BytesAvailable() const |
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46 /** |
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47 Returns the total bytes available in the available pools |
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48 */ |
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49 { |
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50 return iPondImpl->BytesAvailable(); |
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51 } |
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52 |
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53 EXPORT_C TInt RCommsBufPond::BytesAvailable(TInt aSize) const |
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54 /** |
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55 Returns the total bytes available in a pool with a given size. |
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56 */ |
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57 { |
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58 return iPondImpl->BytesAvailable(aSize); |
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59 } |
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60 |
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61 EXPORT_C TInt RCommsBufPond::NextBufSize(TInt aSize) const |
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62 /** |
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63 Returns the buffer size that is greater than the given size. |
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64 */ |
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65 { |
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66 return iPondImpl->NextBufSize(aSize); |
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67 } |
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68 |
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69 EXPORT_C TInt RCommsBufPond::LargestBufSize() const |
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70 /** |
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71 Larget buffer size available in the available pools |
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72 */ |
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73 { |
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74 return iPondImpl->LargestBufSize(); |
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75 } |
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76 |
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77 EXPORT_C TCommsBufAllocator RCommsBufPond::Allocator() |
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78 /** |
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79 Returns a handle to the allocator |
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80 */ |
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81 { |
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82 return TCommsBufAllocator(*this); |
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83 } |
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84 |
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85 EXPORT_C void RCommsBufPond::StartRequest(RCommsBufAsyncRequest& aRequest) |
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86 /** |
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87 Issue an asynchronous request to create a RCommsBufChain |
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88 |
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89 @param aRequest A new request |
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90 */ |
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91 { |
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92 iPondImpl->StartRequest(*(aRequest.iAsyncReqImpl)); |
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93 } |
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94 |
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95 EXPORT_C void RCommsBufPond::CancelRequest(RCommsBufAsyncRequest& aRequest) |
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96 /** |
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97 Cancel the issued request |
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98 |
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99 @param aRequest A request |
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100 */ |
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101 { |
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102 iPondImpl->CancelRequest(*(aRequest.iAsyncReqImpl)); |
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103 } |
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104 |
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105 |
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106 EXPORT_C RCommsBuf* RCommsBufPond::FromHandle(TInt aHandle) |
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107 /** |
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108 Constructs the RCommsBuf from the supplied handle |
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109 |
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110 TInt aHandle RShBuf handle |
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111 */ |
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112 { |
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113 return iPondImpl->FromHandle(aHandle); |
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114 } |
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115 |
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116 |
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117 /** |
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118 @purpose Writes flattened pond structure to a descriptor for transfer to a commsbufs aware driver |
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119 @param aStore Descriptor in to which the pond structure will be flattened |
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120 */ |
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121 EXPORT_C TInt RCommsBufPond::Store(TPondTransferBuf& aStore) const |
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122 { |
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123 // Just forward to the implementation of the pond |
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124 return iPondImpl->Store(aStore); |
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125 } |
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126 |