1 /* |
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2 * Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Processor object for running thumbnail requests |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include "thumbnailrequestqueue.h" |
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20 #include "thumbnailrequestactive.h" |
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21 #include "thumbnaillog.h" |
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22 #include "OstTraceDefinitions.h" |
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23 #ifdef OST_TRACE_COMPILER_IN_USE |
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24 #include "thumbnailrequestqueueTraces.h" |
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25 #endif |
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26 |
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27 |
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28 |
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29 // ======== MEMBER FUNCTIONS ======== |
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30 |
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31 // --------------------------------------------------------------------------- |
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32 // CThumbnailRequestQueue::NewL() |
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33 // Two-phased constructor. |
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34 // --------------------------------------------------------------------------- |
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35 // |
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36 CThumbnailRequestQueue* CThumbnailRequestQueue::NewL() |
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37 { |
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38 CThumbnailRequestQueue* self = new( ELeave )CThumbnailRequestQueue(); |
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39 CleanupStack::PushL( self ); |
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40 self->ConstructL(); |
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41 CleanupStack::Pop( self ); |
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42 return self; |
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43 } |
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44 |
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45 |
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46 // --------------------------------------------------------------------------- |
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47 // CThumbnailRequestQueue::CThumbnailRequestQueue() |
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48 // C++ default constructor can NOT contain any code, that might leave. |
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49 // --------------------------------------------------------------------------- |
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50 // |
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51 CThumbnailRequestQueue::CThumbnailRequestQueue() |
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52 { |
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53 } |
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54 |
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55 |
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56 // --------------------------------------------------------------------------- |
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57 // CThumbnailRequestQueue::ConstructL() |
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58 // Symbian 2nd phase constructor can leave. |
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59 // --------------------------------------------------------------------------- |
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60 // |
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61 void CThumbnailRequestQueue::ConstructL() |
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62 { |
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63 iActiveRequests = 0; |
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64 } |
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65 |
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66 |
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67 // --------------------------------------------------------------------------- |
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68 // CThumbnailRequestQueue::~CThumbnailRequestQueue() |
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69 // Destructor. |
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70 // --------------------------------------------------------------------------- |
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71 // |
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72 CThumbnailRequestQueue::~CThumbnailRequestQueue() |
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73 { |
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74 TN_DEBUG1( "CThumbnailRequestQueue::~CThumbnailRequestQueue()"); |
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75 OstTrace0( TRACE_NORMAL, CTHUMBNAILREQUESTQUEUE_CTHUMBNAILREQUESTQUEUE, "CThumbnailRequestQueue::~CThumbnailRequestQueue" ); |
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76 |
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77 iRequests.ResetAndDestroy(); |
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78 |
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79 TN_DEBUG1( "CThumbnailRequestQueue::~CThumbnailRequestQueue() - All requests deleted"); |
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80 OstTrace0( TRACE_NORMAL, DUP1_CTHUMBNAILREQUESTQUEUE_CTHUMBNAILREQUESTQUEUE, "CThumbnailRequestQueue::~CThumbnailRequestQueue - All requests deleted" ); |
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81 } |
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82 |
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83 |
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84 // --------------------------------------------------------------------------- |
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85 // CThumbnailRequestQueue::Process() |
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86 // Activates next request if possible. |
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87 // --------------------------------------------------------------------------- |
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88 // |
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89 void CThumbnailRequestQueue::Process() |
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90 { |
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91 TN_DEBUG1( "CThumbnailRequestQueue::Process()"); |
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92 OstTrace0( TRACE_NORMAL, CTHUMBNAILREQUESTQUEUE_PROCESS, "CThumbnailRequestQueue::Process" ); |
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93 |
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94 while ( (iActiveRequests < KMaxClientRequests) && |
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95 (iRequests.Count() > iActiveRequests) ) |
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96 { |
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97 CThumbnailRequestActive* selectedRequest = NULL; |
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98 TInt priority( KMinTInt ); |
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99 TInt reqPriority; |
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100 CThumbnailRequestActive* request = NULL; |
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101 |
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102 for ( TInt i = 0; i < iRequests.Count(); i++ ) |
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103 { |
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104 request = iRequests[i]; |
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105 |
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106 // this task is not yet activated or processed |
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107 if( request && !request->RequestCompleted() && !request->IsRequestActive() ) |
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108 { |
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109 TN_DEBUG4( "CThumbnailRequestQueue::Process() - candidate at %d, id = %d, (0x%08x)", i, |
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110 request->RequestId(), |
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111 request); |
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112 OstTrace1( TRACE_NORMAL, DUP4_CTHUMBNAILREQUESTQUEUE_PROCESS, "CThumbnailRequestQueue::Process;request->RequestId()=%u", request->RequestId() ); |
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113 OstTrace1( TRACE_NORMAL, DUP5_CTHUMBNAILREQUESTQUEUE_PROCESS, "CThumbnailRequestQueue::Process;request=%o", request ); |
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114 |
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115 reqPriority = request->Priority(); |
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116 if ( reqPriority > priority ) |
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117 { |
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118 priority = reqPriority; |
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119 selectedRequest = request; |
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120 } |
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121 } |
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122 } |
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123 |
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124 // activate selected |
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125 if ( selectedRequest ) |
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126 { |
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127 TN_DEBUG1( "CThumbnailRequestQueue::Process() - starting next request"); |
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128 OstTrace0( TRACE_NORMAL, DUP1_CTHUMBNAILREQUESTQUEUE_PROCESS, "CThumbnailRequestQueue::Process - starting next request" ); |
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129 |
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130 iActiveRequests++; |
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131 |
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132 TRAPD(err, selectedRequest->StartL()); |
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133 if (err != KErrNone) |
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134 { |
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135 TN_DEBUG1( "CThumbnailRequestQueue::Process() - starting request failed"); |
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136 OstTrace0( TRACE_NORMAL, DUP2_CTHUMBNAILREQUESTQUEUE_PROCESS, "CThumbnailRequestQueue::Process - starting request failed" ); |
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137 |
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138 selectedRequest->StartError(err); |
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139 } |
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140 } |
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141 else |
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142 { |
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143 break; |
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144 } |
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145 } |
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146 |
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147 TN_DEBUG3( "CThumbnailRequestQueue::Process() end - requests: %d, active requests: %d", |
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148 iRequests.Count(), iActiveRequests ); |
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149 OstTraceExt2( TRACE_NORMAL, DUP3_CTHUMBNAILREQUESTQUEUE_PROCESS, "CThumbnailRequestQueue::Process;iRequests.Count()=%d;iActiveRequests=%d", iRequests.Count(), iActiveRequests ); |
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150 } |
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151 |
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152 |
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153 // --------------------------------------------------------------------------- |
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154 // CThumbnailRequestQueue::AddRequestL() |
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155 // Adds new request to the queue. |
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156 // --------------------------------------------------------------------------- |
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157 // |
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158 void CThumbnailRequestQueue::AddRequestL( CThumbnailRequestActive* aRequest ) |
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159 { |
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160 RemoveCompleted(NULL); |
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161 iRequests.AppendL( aRequest ); |
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162 |
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163 TN_DEBUG3( "CThumbnailRequestQueue::AddRequestL() end - requests: %d, active requests: %d", |
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164 iRequests.Count(), iActiveRequests ); |
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165 OstTraceExt2( TRACE_NORMAL, CTHUMBNAILREQUESTQUEUE_ADDREQUESTL, "CThumbnailRequestQueue::AddRequestL;iRequests.Count()=%d;iActiveRequests=%d", iRequests.Count(), iActiveRequests ); |
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166 } |
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167 |
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168 void CThumbnailRequestQueue::RemoveCompleted( CThumbnailRequestActive* aRequestAO) |
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169 { |
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170 //process completed queue and remove finished tasks |
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171 for ( TInt i = iRequests.Count() -1; i >= 0 && iRequests.Count(); i-- ) |
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172 { |
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173 CThumbnailRequestActive* request = iRequests[i]; |
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174 |
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175 // remove completed task if it's not active anymore and not this |
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176 if ( request->RequestCompleted() && !request->IsRequestActive() && aRequestAO != request) |
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177 { |
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178 // delete completed task |
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179 TN_DEBUG3( "CThumbnailRequestQueue::RemoveCompleted() - deleted id = %d (0x%08x)", request->RequestId(), request); |
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180 OstTrace1( TRACE_NORMAL, DUP1_CTHUMBNAILREQUESTQUEUE_REMOVECOMPLETED, "CThumbnailRequestQueue::RemoveCompleted;request=%o", request ); |
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181 OstTrace1( TRACE_NORMAL, DUP2_CTHUMBNAILREQUESTQUEUE_REMOVECOMPLETED, "CThumbnailRequestQueue::RemoveCompleted;request->RequestId()=%u", request->RequestId() ); |
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182 |
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183 delete request; |
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184 request = NULL; |
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185 iRequests.Remove( i ); |
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186 } |
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187 } |
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188 |
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189 if(!iRequests.Count()) |
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190 { |
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191 iRequests.Compress(); |
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192 } |
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193 |
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194 TN_DEBUG3( "CThumbnailRequestQueue::RemoveCompleted() end - requests: %d, active requests: %d", |
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195 iRequests.Count(), iActiveRequests ); |
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196 OstTraceExt2( TRACE_NORMAL, DUP3_CTHUMBNAILREQUESTQUEUE_REMOVECOMPLETED, "CThumbnailRequestQueue::RemoveCompleted;iRequests.Count()=%d;iActiveRequests=%d", iRequests.Count(), iActiveRequests ); |
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197 } |
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198 |
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199 |
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200 // --------------------------------------------------------------------------- |
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201 // CThumbnailRequestQueue::CancelRequest() |
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202 // Removes specific request from the queue. |
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203 // --------------------------------------------------------------------------- |
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204 // |
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205 TInt CThumbnailRequestQueue::CancelRequest( const TThumbnailRequestId aRequestId ) |
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206 { |
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207 TN_DEBUG2( "CThumbnailRequestQueue::CancelRequest() - request ID: %d", aRequestId); |
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208 OstTrace1( TRACE_NORMAL, CTHUMBNAILREQUESTQUEUE_CANCELREQUEST, "CThumbnailRequestQueue::CancelRequest;aRequestId=%u", aRequestId ); |
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209 |
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210 TInt res = KErrNotFound; |
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211 |
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212 for ( TInt i = iRequests.Count(); --i >= 0; ) |
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213 { |
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214 CThumbnailRequestActive* request = iRequests[i]; |
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215 if ( request->RequestId() == aRequestId ) |
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216 { |
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217 if (iRequests[i]->IsActive()) |
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218 { |
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219 // this doesn't yet actually cancel/complete the AO |
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220 iRequests[i]->AsyncCancel(); |
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221 |
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222 TN_DEBUG2( "CThumbnailRequestQueue::CancelRequest() - canceled request ID: %d", aRequestId); |
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223 OstTrace1( TRACE_NORMAL, DUP1_CTHUMBNAILREQUESTQUEUE_CANCELREQUEST, "CThumbnailRequestQueue::CancelRequest;aRequestId=%u", aRequestId ); |
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224 } |
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225 else |
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226 { |
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227 delete request; |
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228 request = NULL; |
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229 iRequests.Remove( i ); |
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230 |
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231 TN_DEBUG2( "CThumbnailRequestQueue::CancelRequest() - removed request ID: %d", aRequestId); |
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232 OstTrace1( TRACE_NORMAL, DUP2_CTHUMBNAILREQUESTQUEUE_CANCELREQUEST, "CThumbnailRequestQueue::CancelRequest;aRequestId=%u", aRequestId ); |
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233 } |
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234 |
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235 res = KErrNone; |
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236 break; |
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237 } |
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238 } |
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239 |
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240 RemoveCompleted(NULL); |
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241 |
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242 Process(); |
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243 |
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244 return res; |
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245 } |
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246 |
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247 |
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248 // --------------------------------------------------------------------------- |
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249 // CThumbnailRequestQueue::ChangeReqPriority() |
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250 // Changes priority of a request. |
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251 // --------------------------------------------------------------------------- |
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252 // |
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253 TInt CThumbnailRequestQueue::ChangePriority( const TThumbnailRequestId aRequestId, |
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254 const TInt aNewPriority ) |
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255 { |
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256 TN_DEBUG1( "CThumbnailRequestQueue::ChangePriority()"); |
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257 OstTrace0( TRACE_NORMAL, CTHUMBNAILREQUESTQUEUE_CHANGEPRIORITY, "CThumbnailRequestQueue::ChangePriority" ); |
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258 |
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259 TInt err = KErrNotFound; |
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260 const TInt count = iRequests.Count(); |
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261 |
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262 for ( TInt i( 0 ); i < count; i++ ) |
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263 { |
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264 if ( iRequests[i]->RequestId() == aRequestId ) |
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265 { |
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266 iRequests[i]->ChangePriority( aNewPriority ); |
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267 |
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268 err = KErrNone; |
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269 break; |
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270 } |
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271 } |
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272 |
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273 return err; |
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274 } |
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275 |
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276 |
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277 // --------------------------------------------------------------------------- |
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278 // CThumbnailRequestQueue::RequestComplete() |
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279 // Completes the request |
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280 // --------------------------------------------------------------------------- |
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281 // |
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282 void CThumbnailRequestQueue::RequestComplete(CThumbnailRequestActive* aRequestAO) |
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283 { |
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284 TN_DEBUG2( "CThumbnailRequestQueue::RequestComplete(0x%08x)", aRequestAO); |
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285 OstTrace1( TRACE_NORMAL, CTHUMBNAILREQUESTQUEUE_REQUESTCOMPLETE, "CThumbnailRequestQueue::RequestComplete;aRequestAO=%o", aRequestAO ); |
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286 |
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287 iActiveRequests--; |
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288 if(iActiveRequests <= -1) |
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289 { |
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290 iActiveRequests = 0; |
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291 } |
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292 |
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293 RemoveCompleted( aRequestAO ); |
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294 |
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295 Process(); |
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296 } |
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297 |
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298 |
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299 // End of file |
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