1 // getstack.cpp

     2 // 

     3 // Copyright (c) 2007 - 2010 Accenture. All rights reserved.

     4 // This component and the accompanying materials are made available

     5 // under the terms of the "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 // Accenture - Initial contribution

    11 //

    12 

    13 #include "getstack.h"

    14 #include <fshell/memoryaccess.h>

    15 

    16 

    17 CCommandBase* CCmdGetStack::NewLC()

    18 	{

    19 	CCmdGetStack* self = new(ELeave) CCmdGetStack();

    20 	CleanupStack::PushL(self);

    21 	self->BaseConstructL();

    22 	return self;

    23 	}

    24 

    25 CCmdGetStack::~CCmdGetStack()

    26 	{

    27 	}

    28 

    29 CCmdGetStack::CCmdGetStack()

    30 	{

    31 	}

    32 

    33 const TDesC& CCmdGetStack::Name() const

    34 	{

    35 	_LIT(KName, "getstack");

    36 	return KName;

    37 	}

    38 

    39 void CCmdGetStack::DoRunL()

    40 	{

    41 	RMemoryAccess memoryAccess;

    42 	TInt err = RMemoryAccess::LoadDriver();

    43 	if ((err == KErrNone) || (err == KErrAlreadyExists))

    44 		{

    45 		User::LeaveIfError(memoryAccess.Open());

    46 		CleanupClosePushL(memoryAccess);

    47 		}

    48 	else

    49 		{

    50 		User::LeaveIfError(err);

    51 		}

    52 	RThread thread;

    53 	User::LeaveIfError(thread.Open(iThreadId));

    54 	CleanupClosePushL(thread);

    55 

    56 	RFile file;

    57 	User::LeaveIfError(file.Create(FsL(), iFileName, EFileWrite | EFileStream));

    58 	CleanupClosePushL(file);

    59 

    60 	TThreadStackInfo stackInfo;

    61 	User::LeaveIfError(thread.StackInfo(stackInfo));

    62 	const TInt stackSize = stackInfo.iBase - stackInfo.iLimit;

    63 

    64 	const TInt KBufSize = 4096; // The largest amount RMemoryAccess allows us to copy in one go.

    65 	HBufC8* stackBuf = HBufC8::NewLC(KBufSize);

    66 	TPtr8 stackBufPtr(stackBuf->Des());

    67 

    68 	TThreadMemoryAccessParamsBuf accessParamsBuf;

    69 	TThreadMemoryAccessParams& accessParams = accessParamsBuf();

    70 	accessParams.iId = (TInt)thread.Id().Id();

    71 

    72 	TInt numBytesRead = 0;

    73 	while (numBytesRead < stackSize)

    74 		{

    75 		accessParams.iAddr = (TUint8*)stackInfo.iLimit + numBytesRead;

    76 		accessParams.iSize = Min(KBufSize, stackSize - numBytesRead);

    77 		stackBufPtr.Zero();

    78 		User::LeaveIfError(memoryAccess.GetThreadMem(accessParamsBuf, stackBufPtr));

    79 		User::LeaveIfError(file.Write(*stackBuf));

    80 		numBytesRead += stackBuf->Length();

    81 		}

    82 

    83 	CleanupStack::PopAndDestroy(4, &memoryAccess);

    84 	}

    85 

    86 void CCmdGetStack::ArgumentsL(RCommandArgumentList& aArguments)

    87 	{

    88 	_LIT(KArgFileName, "file_name");

    89 	aArguments.AppendFileNameL(iFileName, KArgFileName);

    90 

    91 	_LIT(KArgThreadId, "thread_id");

    92 	aArguments.AppendUintL(iThreadId, KArgThreadId);

    93 	}

    94 

    95 

    96 #ifdef EXE_BUILD

    97 EXE_BOILER_PLATE(CCmdGetStack)

    98 #endif

    99