idlefw/hslaunch/src/hsprocessmonitor.cpp
changeset 4 1a2a00e78665
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idlefw/hslaunch/src/hsprocessmonitor.cpp	Tue Feb 02 00:23:10 2010 +0200
@@ -0,0 +1,184 @@
+/* 
+ * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description: process monitor.                 
+ *
+ */
+
+#include "hsprocessmonitor.h"
+
+// ========================= MEMBER FUNCTIONS ==================================
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::NewL()
+// Two-phased constructor
+// -----------------------------------------------------------------------------
+CHsProcessMonitor* CHsProcessMonitor::NewL( const TInt iProcessId,
+                                            MHsProcessMonitorObserver& aObserver )
+    {
+    CHsProcessMonitor* self = new ( ELeave ) CHsProcessMonitor( iProcessId,
+                                                                aObserver );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::~CHsProcessMonitor()
+// Destructor.
+// -----------------------------------------------------------------------------
+//
+CHsProcessMonitor::~CHsProcessMonitor()
+    {
+    Cancel();
+    SecureProcessHandleAsClosed();    	
+    iProcessId = KErrNotFound;
+    }
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::AttachMonitor()
+// Attach monitor
+// -----------------------------------------------------------------------------
+//
+TInt CHsProcessMonitor::AttachMonitor()
+    {   
+    SecureProcessHandleAsClosed();
+    
+    TInt error = iProcess.Open( iProcessId, EOwnerProcess );
+    
+    if( error == KErrNone )
+        {
+        iProcessHandleOpen = ETrue;
+        }
+    
+    return error;
+    }   
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::StartMonitor()
+// Start monitor
+// -----------------------------------------------------------------------------
+//
+TInt CHsProcessMonitor::StartMonitor()
+    {
+    TInt error = KErrNone;
+    
+    if( !iProcessHandleOpen )
+        {
+        error = AttachMonitor();
+        }
+    
+    if( error == KErrNone )
+        {
+        iProcess.Logon( iStatus );
+        SetActive();                
+        }
+    
+    return error;
+    }   
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::CHsProcessMonitor()
+// C++ default constructor can NOT contain any code, that might leave.
+// -----------------------------------------------------------------------------
+CHsProcessMonitor::CHsProcessMonitor( const TInt aProcessId,
+                                      MHsProcessMonitorObserver& aObserver ) :
+        CActive( EPriorityStandard ),
+        iProcessId( aProcessId ),
+        iObserver( aObserver ),
+        iProcessHandleOpen( EFalse )
+    {
+    CActiveScheduler::Add( this );
+    }
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::ConstructL()
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CHsProcessMonitor::ConstructL()
+    {    
+    }
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::RunL
+// -----------------------------------------------------------------------------
+//
+void CHsProcessMonitor::RunL()
+    {
+    iProcess.LogonCancel( iStatus );    	
+    
+    const TInt error = iStatus.Int();        
+    
+    if( error == KErrCancel )
+        {
+        }
+    else if( error == KErrNoMemory )
+        {
+        User::Leave( KErrNoMemory );
+        }
+    else
+        {
+        const TExitType exitType = iProcess.ExitType();									
+        if( exitType == EExitPending )
+            {
+            User::LeaveIfError( StartMonitor() );
+            }
+        else
+            {
+            iObserver.ProcessEnded( exitType,
+                                    iProcess.ExitReason(),
+                                    iProcess.ExitCategory() );
+            }
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::DoCancel()
+// From CActive.
+// -----------------------------------------------------------------------------
+//
+void CHsProcessMonitor::DoCancel()
+    {
+    iProcess.LogonCancel( iStatus );
+    }      
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::RunError()
+// From CActive.
+// -----------------------------------------------------------------------------
+//
+TInt CHsProcessMonitor::RunError( TInt aError )
+    {    
+    iObserver.ProcessMonitoringError( aError );
+
+    // Observer will handle error. Return green light.
+    return KErrNone;    
+    }  
+
+// -----------------------------------------------------------------------------
+// CHsProcessMonitor::SecureProcessHandleAsClosed()
+// Close process handle if open
+// -----------------------------------------------------------------------------
+//
+void CHsProcessMonitor::SecureProcessHandleAsClosed()
+    {
+    if( iProcessHandleOpen )
+        {
+        iProcess.Close();
+        iProcessHandleOpen = EFalse;
+        }
+    } 
+
+// End of File