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: ?Description |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 #include "ircachecleanup.h" |
|
20 #include "ircachemgmt.h" |
|
21 #include "irdebug.h" |
|
22 |
|
23 //Constant decided on the rate of data collection in cache in a high speed connection |
|
24 /* const TUint KConstantForCleanupFrequency = KCacheLimitSize*90; */ |
|
25 //maximum time interval = 2147483648/KCacheLimitSize |
|
26 const TUint KIntervalPerByte =2048 ; |
|
27 // |
|
28 const TInt KMinCleanupInterval = 2*60*1000000;//2 mins |
|
29 const TInt KMaxCleanupInterval = 2147483647;//~36 mins for 1MB data |
|
30 |
|
31 // --------------------------------------------------------------------------- |
|
32 //Two-phased constructor. |
|
33 // --------------------------------------------------------------------------- |
|
34 // |
|
35 CIRCacheCleanup* CIRCacheCleanup::NewL(CIRCacheMgmt& aCacheDb) |
|
36 { |
|
37 IRLOG_DEBUG( "CIRCacheCleanup::NewL - Entering" ); |
|
38 CIRCacheCleanup* self = new(ELeave)CIRCacheCleanup(aCacheDb); |
|
39 CleanupStack::PushL(self); |
|
40 self->ConstructL(); |
|
41 CleanupStack::Pop(self); |
|
42 IRLOG_DEBUG( "CIRCacheCleanup::NewL - Exiting" ); |
|
43 return self; |
|
44 } |
|
45 |
|
46 // --------------------------------------------------------------------------- |
|
47 // Destructor. |
|
48 // --------------------------------------------------------------------------- |
|
49 // |
|
50 CIRCacheCleanup::~CIRCacheCleanup() |
|
51 { |
|
52 IRLOG_DEBUG( "CIRCacheCleanup::~CIRCacheCleanup - Entering" ); |
|
53 Cancel(); |
|
54 IRLOG_DEBUG( "CIRCacheCleanup::~CIRCacheCleanup - Exiting" ); |
|
55 } |
|
56 |
|
57 // --------------------------------------------------------------------------- |
|
58 //Default Constructor |
|
59 // --------------------------------------------------------------------------- |
|
60 // |
|
61 CIRCacheCleanup::CIRCacheCleanup(CIRCacheMgmt& aCacheDb): |
|
62 CTimer( CActive::EPriorityLow ), iDatabase( aCacheDb ) |
|
63 { |
|
64 IRLOG_DEBUG( "CIRCacheCleanup::CIRCacheCleanup - Entering" ); |
|
65 CActiveScheduler::Add( this ); |
|
66 IRLOG_DEBUG( "CIRCacheCleanup::CIRCacheCleanup - Exiting" ); |
|
67 } |
|
68 |
|
69 // --------------------------------------------------------------------------- |
|
70 //Second-phase constructor. |
|
71 // --------------------------------------------------------------------------- |
|
72 // |
|
73 void CIRCacheCleanup::ConstructL() |
|
74 { |
|
75 IRLOG_DEBUG( "CIRCacheCleanup::ConstructL - Entering" ); |
|
76 CTimer::ConstructL(); |
|
77 CheckStatusL(); |
|
78 IRLOG_DEBUG( "CIRCacheCleanup::ConstructL - Exiting" ); |
|
79 } |
|
80 |
|
81 // --------------------------------------------------------------------------- |
|
82 //Cleanup CacheDb if necessary |
|
83 // --------------------------------------------------------------------------- |
|
84 // |
|
85 void CIRCacheCleanup::CleanupCacheDbL() |
|
86 { |
|
87 IRLOG_DEBUG( "CIRCacheCleanup::CleanupCacheDbL - Entering" ); |
|
88 iDatabase.CheckSizeL(); |
|
89 IRLOG_DEBUG( "CIRCacheCleanup::CleanupCacheDbL - Exiting" ); |
|
90 } |
|
91 |
|
92 // --------------------------------------------------------------------------- |
|
93 //CheckStatus of CacheDb and do cleanup if necessary |
|
94 // --------------------------------------------------------------------------- |
|
95 // |
|
96 void CIRCacheCleanup::CheckStatusL() |
|
97 { |
|
98 IRLOG_DEBUG( "CIRCacheCleanup::CheckStatusL - Entering" ); |
|
99 TTimeIntervalMicroSeconds32 interval(GetCleanupInterval()); |
|
100 After(interval); |
|
101 CleanupCacheDbL(); |
|
102 IRLOG_DEBUG( "CIRCacheCleanup::CheckStatusL - Exiting" ); |
|
103 } |
|
104 |
|
105 // --------------------------------------------------------------------------- |
|
106 // CIRCacheCleanup::RunL(). |
|
107 // --------------------------------------------------------------------------- |
|
108 // |
|
109 void CIRCacheCleanup::RunL() |
|
110 { |
|
111 IRLOG_DEBUG( "CIRCacheCleanup::RunL - Entering" ); |
|
112 CheckStatusL(); |
|
113 IRLOG_DEBUG( "CIRCacheCleanup::RunL - Exiting" ); |
|
114 } |
|
115 |
|
116 // --------------------------------------------------------------------------- |
|
117 // CIRCacheCleanup::GetCleanupInterval(). |
|
118 // --------------------------------------------------------------------------- |
|
119 // |
|
120 TUint32 CIRCacheCleanup::GetCleanupInterval() |
|
121 { |
|
122 IRLOG_DEBUG( "CIRCacheCleanup::GetCleanupInterval - Entering" ); |
|
123 //formula derivation: |
|
124 //Timeinterval of cleanup (T) is inversely proportional to the cache size(S) |
|
125 //Minimum time interval for cleanup routine 2 min. |
|
126 //Maximum time interval for cleanup routine ~35mins. |
|
127 //timeintervalperbyte = (35-2)*60*1000000/1024*1024 |
|
128 //TimeInterval = timeintervalperbyte*(MaxCacheLimit-CurrentCachesize) |
|
129 |
|
130 TInt interval =KIntervalPerByte * (KCacheLimitSize - iDatabase.CacheSize()); |
|
131 //keep the value range bound |
|
132 interval = Max(interval,KMinCleanupInterval); |
|
133 interval = Min(interval,KMaxCleanupInterval); |
|
134 IRLOG_DEBUG( "CIRCacheCleanup::GetCleanupInterval - Exiting" ); |
|
135 return interval; |
|
136 } |
|