|
1 /* |
|
2 * Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Processor object for running harvester requests |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 #include "harvesterrequestqueue.h" |
|
20 #include "harvesterrequestactive.h" |
|
21 #include "harvesterlog.h" |
|
22 |
|
23 // maximum number of active client requests ( 18 burst images + 1 video ) |
|
24 const TUint KMaxClientRequests = 19; |
|
25 |
|
26 // ======== MEMBER FUNCTIONS ======== |
|
27 |
|
28 // --------------------------------------------------------------------------- |
|
29 // CHarvesterRequestQueue::NewL() |
|
30 // Two-phased constructor. |
|
31 // --------------------------------------------------------------------------- |
|
32 // |
|
33 CHarvesterRequestQueue* CHarvesterRequestQueue::NewL() |
|
34 { |
|
35 CHarvesterRequestQueue* self = new( ELeave )CHarvesterRequestQueue(); |
|
36 CleanupStack::PushL( self ); |
|
37 self->ConstructL(); |
|
38 CleanupStack::Pop( self ); |
|
39 return self; |
|
40 } |
|
41 |
|
42 |
|
43 // --------------------------------------------------------------------------- |
|
44 // CHarvesterRequestQueue::CHarvesterRequestQueue() |
|
45 // C++ default constructor can NOT contain any code, that might leave. |
|
46 // --------------------------------------------------------------------------- |
|
47 // |
|
48 CHarvesterRequestQueue::CHarvesterRequestQueue(): CActive( CActive::EPriorityStandard ) |
|
49 { |
|
50 CActiveScheduler::Add( this ); |
|
51 } |
|
52 |
|
53 |
|
54 // --------------------------------------------------------------------------- |
|
55 // CHarvesterRequestQueue::ConstructL() |
|
56 // Symbian 2nd phase constructor can leave. |
|
57 // --------------------------------------------------------------------------- |
|
58 // |
|
59 void CHarvesterRequestQueue::ConstructL() |
|
60 { |
|
61 iActiveRequests = 0; |
|
62 iShutdown = EFalse; |
|
63 } |
|
64 |
|
65 |
|
66 // --------------------------------------------------------------------------- |
|
67 // CHarvesterRequestQueue::~CHarvesterRequestQueue() |
|
68 // Destructor. |
|
69 // --------------------------------------------------------------------------- |
|
70 // |
|
71 CHarvesterRequestQueue::~CHarvesterRequestQueue() |
|
72 { |
|
73 WRITELOG( "CHarvesterRequestQueue::~CHarvesterRequestQueue()"); |
|
74 |
|
75 Cancel(); |
|
76 iRequests.ResetAndDestroy(); |
|
77 |
|
78 WRITELOG( "CHarvesterRequestQueue::~CHarvesterRequestQueue() - All requests deleted"); |
|
79 } |
|
80 |
|
81 |
|
82 // --------------------------------------------------------------------------- |
|
83 // CHarvesterRequestQueue::Process() |
|
84 // Activates next request if possible. |
|
85 // --------------------------------------------------------------------------- |
|
86 // |
|
87 void CHarvesterRequestQueue::Process() |
|
88 { |
|
89 WRITELOG( "CHarvesterRequestQueue::Process()"); |
|
90 |
|
91 if ( !IsActive() && !iShutdown && (iActiveRequests < KMaxClientRequests) ) |
|
92 { |
|
93 SetActive(); |
|
94 TRequestStatus* statusPtr = &iStatus; |
|
95 User::RequestComplete( statusPtr, KErrNone ); |
|
96 } |
|
97 } |
|
98 |
|
99 |
|
100 // --------------------------------------------------------------------------- |
|
101 // CHarvesterRequestQueue::AddRequestL() |
|
102 // Adds new request to the queue. |
|
103 // --------------------------------------------------------------------------- |
|
104 // |
|
105 void CHarvesterRequestQueue::AddRequestL( CHarvesterRequestActive* aRequest ) |
|
106 { |
|
107 WRITELOG( "CHarvesterRequestQueue::AddRequestL()"); |
|
108 |
|
109 iRequests.AppendL( aRequest ); |
|
110 } |
|
111 |
|
112 |
|
113 // --------------------------------------------------------------------------- |
|
114 // CHarvesterRequestQueue::RunL() |
|
115 // --------------------------------------------------------------------------- |
|
116 // |
|
117 void CHarvesterRequestQueue::RunL() |
|
118 { |
|
119 WRITELOG2( "CHarvesterRequestQueue::RunL() begin - requests: %d, active requests: %d", |
|
120 iRequests.Count(), iActiveRequests ); |
|
121 |
|
122 CHarvesterRequestActive* selectedRequest = NULL; |
|
123 |
|
124 for ( TInt i = 0; i < iRequests.Count(); i++ ) |
|
125 { |
|
126 CHarvesterRequestActive* request = iRequests[i]; |
|
127 |
|
128 // remove completed tasks |
|
129 if ( request->RequestCompleted() && !request->IsActive() ) |
|
130 { |
|
131 // delete completed task |
|
132 delete request; |
|
133 iRequests.Remove( i ); |
|
134 |
|
135 // correct the index so that no tasks are skipped |
|
136 i--; |
|
137 if(i <= -1) |
|
138 { |
|
139 i = -1; |
|
140 } |
|
141 |
|
142 WRITELOG( "CHarvesterRequestQueue::RunL() - removing completed request"); |
|
143 } |
|
144 // select priorised task |
|
145 else |
|
146 { |
|
147 // not yet activated |
|
148 if( !request->IsActive() ) |
|
149 { |
|
150 selectedRequest = request; |
|
151 } |
|
152 } |
|
153 } |
|
154 |
|
155 // activate selected |
|
156 if ( selectedRequest ) |
|
157 { |
|
158 iActiveRequests++; |
|
159 selectedRequest->Start(); |
|
160 } |
|
161 |
|
162 WRITELOG2( "CHarvesterRequestQueue::RunL() end - requests: %d, active requests: %d", |
|
163 iRequests.Count(), iActiveRequests ); |
|
164 |
|
165 // continue processing if needed |
|
166 if ( !iShutdown && (iActiveRequests < KMaxClientRequests) && |
|
167 (iRequests.Count() > iActiveRequests)) |
|
168 { |
|
169 SetActive(); |
|
170 TRequestStatus* statusPtr = &iStatus; |
|
171 User::RequestComplete( statusPtr, KErrNone ); |
|
172 } |
|
173 else |
|
174 { |
|
175 iRequests.Compress(); |
|
176 } |
|
177 } |
|
178 |
|
179 // --------------------------------------------------------------------------- |
|
180 // Handle any error from RunL |
|
181 // --------------------------------------------------------------------------- |
|
182 // |
|
183 TInt CHarvesterRequestQueue::RunError( TInt aError ) |
|
184 { |
|
185 WRITELOG1( "CHarvesterRequestQueue::RunError() - %d", aError); |
|
186 |
|
187 if (aError) |
|
188 { |
|
189 iActiveRequests--; |
|
190 if(iActiveRequests <= -1) |
|
191 { |
|
192 iActiveRequests = 0; |
|
193 } |
|
194 } |
|
195 |
|
196 return KErrNone; |
|
197 } |
|
198 |
|
199 // --------------------------------------------------------------------------- |
|
200 // CHarvesterRequestQueue::DoCancel() |
|
201 // --------------------------------------------------------------------------- |
|
202 // |
|
203 void CHarvesterRequestQueue::DoCancel() |
|
204 { |
|
205 WRITELOG( "CHarvesterRequestQueue::DoCancel()"); |
|
206 |
|
207 for( TInt i(0); i < iRequests.Count(); i++ ) |
|
208 { |
|
209 iRequests[i]->Cancel(); |
|
210 } |
|
211 |
|
212 iShutdown = ETrue; |
|
213 } |
|
214 |
|
215 |
|
216 // --------------------------------------------------------------------------- |
|
217 // CHarvesterRequestQueue::RequestComplete() |
|
218 // Completes the request |
|
219 // --------------------------------------------------------------------------- |
|
220 // |
|
221 void CHarvesterRequestQueue::RequestComplete() |
|
222 { |
|
223 WRITELOG( "CHarvesterRequestQueue::RequestComplete()"); |
|
224 |
|
225 iActiveRequests--; |
|
226 if(iActiveRequests <= -1) |
|
227 { |
|
228 iActiveRequests = 0; |
|
229 } |
|
230 |
|
231 WRITELOG1( "CHarvesterRequestQueue::RequestComplete() - active requests: %d", iActiveRequests ); |
|
232 |
|
233 // clean completed request and possibly process next |
|
234 if ( !IsActive() && !iShutdown ) |
|
235 { |
|
236 SetActive(); |
|
237 TRequestStatus* statusPtr = &iStatus; |
|
238 User::RequestComplete( statusPtr, KErrNone ); |
|
239 } |
|
240 } |
|
241 |
|
242 // --------------------------------------------------------------------------- |
|
243 // CHarvesterRequestQueue::ForceRequests() |
|
244 // --------------------------------------------------------------------------- |
|
245 // |
|
246 void CHarvesterRequestQueue::ForceRequests() |
|
247 { |
|
248 WRITELOG( "CHarvesterRequestQueue::ForceRequests()"); |
|
249 |
|
250 Cancel(); |
|
251 |
|
252 for ( TInt i = 0; i < iRequests.Count(); i++ ) |
|
253 { |
|
254 CHarvesterRequestActive* request = iRequests[i]; |
|
255 // remove completed tasks |
|
256 if ( request->RequestCompleted() ) |
|
257 { |
|
258 // delete completed task |
|
259 delete request; |
|
260 iRequests.Remove( i ); |
|
261 |
|
262 // correct the index so that no tasks are skipped |
|
263 i--; |
|
264 if(i <= -1) |
|
265 { |
|
266 i = -1; |
|
267 } |
|
268 } |
|
269 else |
|
270 { |
|
271 iRequests[i]->ForceHarvest(); |
|
272 } |
|
273 } |
|
274 } |
|
275 |
|
276 // End of file |