1 /*

     2 * Copyright (c) 2006 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:  Logging functionality for OOM monitor profiling.

    15 *

    16 */

    17 

    18 

    19 #ifndef OOMLOG_H_

    20 #define OOMLOG_H_

    21 

    22 #ifdef _DEBUG

    23 

    24 #include <apgwgnam.h>

    25 

    26 #include "oomwindowgrouplist.h"

    27 

    28 const TUint KTimeBetweenMemorySamples = 100000; // In microseconds

    29 const TUint KSamplingDurationUint = 3000000;

    30 

    31 const TUint KMaxBytesOfLoggingPerSample = 20;

    32 

    33 NONSHARABLE_CLASS(COomLogger) : public CTimer

    34     {

    35 public:

    36     static COomLogger* NewL(RWsSession& aWs, RFs& aFs);

    37     

    38     // Start logging the available memory every n micro seconds

    39     // Firstly a list of the app IDs is written to the log (foreground app first)

    40     // Note that the log is created in memory (to a pre-allocated buffer) and flushed out after it is complete

    41     // the samples are saved in CSV format so that they can easily be cut and pasted to plot graphs etc.

    42     void StartL();

    43     

    44 // From CTimer / CActice

    45     void RunL();

    46     void DoCancel();

    47     

    48     ~COomLogger();

    49     

    50     void Write(const TDesC8& aBuffer);

    51     

    52 protected:

    53     void LogApplicationIds();

    54     void LogFreeMemory();

    55     

    56     COomLogger(RWsSession& aWs, RFs& aFs);

    57     void ConstructL();

    58     

    59     // Duplicated functionality from OomMonitor

    60     // Duplicated because it was messy to reuse it and to minimise changes to OOM monitor during development of new features

    61     void ColapseWindowGroupTree();

    62     

    63     TUid GetUidFromWindowGroupId(TInt aWgId);

    64 

    65     RWsSession& iWs;    

    66     

    67     // Used to get a list of open applications

    68     RArray<RWsSession::TWindowGroupChainInfo> iWgIds;

    69     CApaWindowGroupName* iWgName;

    70     HBufC* iWgNameBuf;              // owned by iWgName

    71     

    72     RFs& iFs;

    73     

    74     RFile iFile;

    75     TBool iIsOpen;

    76     

    77     // The time when the logging was started

    78     TTime iStartTime;

    79     

    80     TBuf8<(KSamplingDurationUint / KTimeBetweenMemorySamples) * KMaxBytesOfLoggingPerSample> iWriteBuffer;

    81     };

    82 

    83 #endif //_DEBUG

    84 

    85 #endif /*OOMLOG_H_*/