dbgagents/trkagent/toolsstarter/toolsstarterserver/src/toolsprocess.cpp
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     1 /*
       
     2 * Copyright (c) 2009 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: 
       
    15 *
       
    16 */
       
    17 // INCLUDE FILES
       
    18 #include <e32std.h>                      
       
    19 
       
    20 #include "toolsprocess.h" 
       
    21 
       
    22 #define SafeDelete(x) { if (x) delete x; x = NULL; }
       
    23                    
       
    24 // LOCAL FUNCTION PROTOTYPES
       
    25 
       
    26 // LOCAL CONSTANTS
       
    27 
       
    28 
       
    29 //
       
    30 // CProcessTracker constructor
       
    31 //
       
    32 // Accepts CTrkDispatchLayer interface and the process ID of the
       
    33 // process to watch
       
    34 //
       
    35 CProcessTracker::CProcessTracker(CToolsProcess *aToolsProcess, TUint32 aProcessId)
       
    36     : CActive(EPriorityStandard),
       
    37       iProcessId(aProcessId),
       
    38       iToolsProcess(aToolsProcess)
       
    39 {
       
    40     CActiveScheduler::Add(this);
       
    41 
       
    42     TInt error = iProcess.Open(iProcessId);
       
    43     if (KErrNone != error)
       
    44         User::Panic(_L("Unable to open process"), __LINE__);
       
    45 }
       
    46 
       
    47 //
       
    48 // CProcessTracker destructor
       
    49 //
       
    50 CProcessTracker::~CProcessTracker()
       
    51 {
       
    52     Cancel();
       
    53     Deque();
       
    54     iProcess.Close();
       
    55 }
       
    56 
       
    57 //
       
    58 // CProcessTracker::Watch
       
    59 //
       
    60 // Watch for the process to exit
       
    61 //
       
    62 void CProcessTracker::Watch()
       
    63 {
       
    64     iProcess.Logon(iStatus);
       
    65     SetActive();
       
    66 }
       
    67 
       
    68 //
       
    69 // CProcessTracker::RunL
       
    70 //
       
    71 // Called when the process exits
       
    72 //
       
    73 void CProcessTracker::RunL()
       
    74 {
       
    75     // sometimes this is run when the process has yet to exit
       
    76     if (iProcess.ExitType() == EExitPending)
       
    77     {
       
    78         iProcess.LogonCancel(iStatus);
       
    79         Watch();
       
    80     }
       
    81     else
       
    82     {
       
    83         iToolsProcess->ProcessDied(iProcess.ExitReason());
       
    84     }
       
    85 }
       
    86 
       
    87 //
       
    88 // CProcessTracker::DoCancel
       
    89 //
       
    90 // Stop waiting for this process to exit
       
    91 //
       
    92 void CProcessTracker::DoCancel()
       
    93 {
       
    94     iProcess.LogonCancel(iStatus);
       
    95 }
       
    96 
       
    97 //
       
    98 // CToolsProcess implementation
       
    99 //
       
   100 
       
   101 TBool CToolsProcess::iFirstTimeAfterBoot = ETrue;
       
   102 //
       
   103 // CToolsProcess::NewL
       
   104 //
       
   105 CToolsProcess* CToolsProcess::NewL(const TDesC& aPath, const TDesC& aArgsUsb, const TDesC& aArgsXti)
       
   106 {
       
   107     CToolsProcess* self = new(ELeave) CToolsProcess;
       
   108     self->ConstructL(aPath, aArgsUsb, aArgsXti);
       
   109     return self;
       
   110 }
       
   111 
       
   112 //
       
   113 // CTrkEngine::NewLC
       
   114 //
       
   115 CToolsProcess* CToolsProcess::NewLC(const TDesC& aPath, const TDesC& aArgsUsb, const TDesC& aArgsXti)
       
   116 {
       
   117     CToolsProcess* self = new(ELeave) CToolsProcess;
       
   118     CleanupStack::PushL(self);
       
   119     
       
   120     self->ConstructL(aPath, aArgsUsb, aArgsXti);
       
   121     
       
   122     return self;
       
   123 }
       
   124 
       
   125 //
       
   126 // CToolsProcess::ConstructL
       
   127 // Constructor
       
   128 //
       
   129 void CToolsProcess::ConstructL(const TDesC& aPath, const TDesC& aArgsUsb, const TDesC& aArgsXti) 
       
   130 {
       
   131     iPath.Copy(aPath);
       
   132     iArgsUsb.Copy(aArgsUsb);
       
   133     iArgsXti.Copy(aArgsXti);
       
   134 }
       
   135 //
       
   136 // CToolsProcess::CToolsProcess
       
   137 // Constructor
       
   138 //
       
   139 CToolsProcess::CToolsProcess() 
       
   140             : iRunning(EFalse),
       
   141               iProcessTracker(NULL)
       
   142 {
       
   143         
       
   144 }
       
   145 
       
   146 //
       
   147 // CToolsProcess::~CToolsProcess
       
   148 // Destructor
       
   149 //
       
   150 CToolsProcess::~CToolsProcess()
       
   151 {
       
   152     SafeDelete(iProcessTracker);
       
   153     iProcess.Close();
       
   154 }
       
   155 
       
   156 //
       
   157 // CToolsProcess::Start
       
   158 //
       
   159 TInt CToolsProcess::Start(TCmdLineConnType aConnType) 
       
   160 {
       
   161     TBuf<KMaxCmdLineConnArgsLen> cmdConnArgs = _L("");
       
   162     switch (aConnType)
       
   163     {
       
   164         case EUsb:
       
   165             cmdConnArgs = iArgsUsb;
       
   166             break;
       
   167         case EXti:
       
   168             cmdConnArgs = iArgsXti;
       
   169             break;
       
   170         default:
       
   171             return KErrNotFound;
       
   172     }
       
   173   
       
   174     TInt err = KErrNone;
       
   175     // check to see if we have already launched or not.
       
   176     // We only launch the first time and we track the process that we launched
       
   177     // Also check to see if the process is already running or not.
       
   178     // User could have manually launched the application in which case the user needs to 
       
   179     // connect from the tool manually.
       
   180     if (!iRunning)
       
   181     {       
       
   182         err = iProcess.Create(iPath, cmdConnArgs);  
       
   183         if (!err)
       
   184         {
       
   185             iProcessId = iProcess.Id();     
       
   186             iProcess.Resume();        
       
   187           
       
   188         }
       
   189         if (!err)
       
   190         {
       
   191             iRunning = ETrue; //now the process is running..
       
   192         }
       
   193         
       
   194         
       
   195     }
       
   196     
       
   197     return err;
       
   198 }
       
   199 
       
   200 //
       
   201 // CToolsProcess::Stop
       
   202 //
       
   203 void CToolsProcess::Stop() 
       
   204 {
       
   205     if (iRunning)
       
   206     {
       
   207         iRunning = EFalse;
       
   208         iProcess.Kill(-1);
       
   209         iProcess.Close();
       
   210         SafeDelete(iProcessTracker);
       
   211     }
       
   212 }
       
   213 
       
   214 //
       
   215 // CToolsProcess::Stop
       
   216 //
       
   217 void CToolsProcess::ProcessDied(TInt aExitReason) 
       
   218 {
       
   219     iRunning = EFalse;
       
   220     iProcess.Close();
       
   221     SafeDelete(iProcessTracker);        
       
   222 }
       
   223