1 /*

     2 * Copyright (c) 2008 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 GOOM monitor profiling

    15 *

    16 */

    17 

    18 #ifndef GOOMLOG_H_

    19 #define GOOMLOG_H_

    20 

    21 #ifdef _DEBUG

    22 

    23 #include <apgwgnam.h>

    24 

    25 #include "goomwindowgrouplist.h"

    26 

    27 const TUint KTimeBetweenMemorySamples = 100000; // In microseconds

    28 const TUint KSamplingDurationUint = 3000000;

    29 

    30 const TUint KMaxBytesOfLoggingPerSample = 20;

    31 

    32 NONSHARABLE_CLASS(CGOomLogger) : public CTimer

    33     {

    34 public:

    35     static CGOomLogger* NewL(RWsSession& aWs, RFs& aFs);

    36     

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

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

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

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

    41     void StartL();

    42     

    43 // From CTimer / CActice

    44     void RunL();

    45     void DoCancel();

    46     

    47     ~CGOomLogger();

    48     

    49     void Write(const TDesC8& aBuffer);

    50     

    51 protected:

    52     void LogApplicationIds();

    53     void LogFreeMemory();

    54     

    55     CGOomLogger(RWsSession& aWs, RFs& aFs);

    56     void ConstructL();

    57     

    58     // Duplicated functionality from GOomMonitor

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

    60     void ColapseWindowGroupTree();

    61     

    62     TUid GetUidFromWindowGroupId(TInt aWgId);

    63 

    64     RWsSession& iWs;    

    65     

    66     // Used to get a list of open applications

    67     RArray<RWsSession::TWindowGroupChainInfo> iWgIds;

    68     CApaWindowGroupName* iWgName;

    69     HBufC* iWgNameBuf;              // owned by iWgName

    70     

    71     RFs& iFs;

    72     

    73     RFile iFile;

    74     TBool iIsOpen;

    75     

    76     // The time when the logging was started

    77     TTime iStartTime;

    78     

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

    80     };

    81 

    82 #endif //_DEBUG

    83 

    84 #endif /*OOMLOG_H_*/