equal
deleted
inserted
replaced
|
1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of the License "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // |
|
15 |
|
16 |
|
17 |
|
18 /** |
|
19 @file |
|
20 @internalComponent |
|
21 */ |
|
22 |
|
23 #ifndef MTHRASH_H |
|
24 #define MTHRASH_H |
|
25 |
|
26 class DThrashMonitor |
|
27 { |
|
28 public: |
|
29 |
|
30 DThrashMonitor(); |
|
31 void Start(); |
|
32 TInt ThrashLevel(); |
|
33 TInt SetThresholds(TUint thrashing, TUint good); |
|
34 |
|
35 void NotifyStartPaging(); // The current thread has started a paging operation |
|
36 void NotifyEndPaging(); // The current thread has completed a paging operation |
|
37 |
|
38 private: |
|
39 |
|
40 enum TCount |
|
41 { |
|
42 ECountThreadsPaging, |
|
43 EMaxCount |
|
44 }; |
|
45 |
|
46 struct TCountData |
|
47 { |
|
48 TInt iCount; // Current value of counter |
|
49 TUint32 iLastUpdateTime; // Time counter was last updated |
|
50 TInt64 iTotal; // Accumulator for ticks * value |
|
51 TInt iAverage; // Average value of counter for last time period * 100 |
|
52 }; |
|
53 |
|
54 private: |
|
55 |
|
56 void UpdateCount(TCount aCount, TInt aDelta); |
|
57 void RecalculateThrashLevel(); // Update internal state, called periodically from timer DFC |
|
58 static void UpdateDfcFunc(TAny* aPtr); |
|
59 |
|
60 private: |
|
61 |
|
62 TBool iRunning; |
|
63 NTimer iUpdateTimer; |
|
64 TDfc iUpdateDfc; |
|
65 TUint32 iLastUpdateTime; |
|
66 NFastMutex iMutex; |
|
67 |
|
68 TInt iThrashLevel; |
|
69 TBool iIsThrashing; |
|
70 TInt iThresholdThrashing; |
|
71 TInt iThresholdGood; |
|
72 |
|
73 TCountData iCount[EMaxCount]; |
|
74 }; |
|
75 |
|
76 extern DThrashMonitor TheThrashMonitor; |
|
77 |
|
78 #endif |