sensorservices/sensorserver/src/server/sensrvtimer.cpp
changeset 0 4e1aa6a622a0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sensorservices/sensorserver/src/server/sensrvtimer.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,139 @@
+/*
+* Copyright (c) 2006 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:  Generic sensor server timer
+*
+*/
+
+
+#include "sensrvdefines.h"
+#include "sensrvtimer.h"
+#include "sensrvtrace.h"
+
+// -----------------------------------------------------------------------------
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CSensrvTimer* CSensrvTimer::NewL(MSensrvTimerCallback& aCallback,
+                                 const TTimeIntervalMicroSeconds32& aMaxTime,
+                                 TInt aTimerId)
+    {
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::NewL(0x%x, %d, %d)" ), &aCallback, aMaxTime.Int(), aTimerId ) );
+
+    CSensrvTimer* self = new (ELeave) CSensrvTimer(aCallback, aMaxTime, aTimerId);
+    CleanupStack::PushL(self);
+    self->ConstructL(); // Base call, needed or will KERN-EXEC 0 at ::After()
+    CleanupStack::Pop(self); 
+
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::NewL - return 0x%x" ), self ) );
+
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// Constructor with callback class as a parameter.
+// -----------------------------------------------------------------------------
+//
+CSensrvTimer::CSensrvTimer(MSensrvTimerCallback& aCallback, 
+                           const TTimeIntervalMicroSeconds32& aMaxTime,
+                           TInt aTimerId)
+        : CTimer(EPriorityHigh), 
+          iCallback(aCallback),
+          iMaximumTime(aMaxTime),
+          iTimerId(aTimerId)
+    {
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::CSensrvTimer()" ) ) );
+
+    // Nothing to do
+    
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::CSensrvTimer - return" ) ) );
+    }
+
+// -----------------------------------------------------------------------------
+// Destructor.
+// -----------------------------------------------------------------------------
+//
+CSensrvTimer::~CSensrvTimer()
+    {
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::~CSensrvTimer()" ) ) );
+    
+    Cancel();
+    
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::~CSensrvTimer - return" ) ) );
+    }
+
+// -----------------------------------------------------------------------------
+// Start the timer to complete after the specified number of microseconds.
+// If the duration is zero, then timer is set to predefined maximum value.
+// -----------------------------------------------------------------------------
+//
+void CSensrvTimer::Set(const TTimeIntervalMicroSeconds32& aInterval)
+    {
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::Set(%d)" ), aInterval.Int() ) );
+
+    if (CActiveScheduler::Current())
+        {
+        if (!IsAdded())
+            {
+            CActiveScheduler::Add(this);
+            }
+        
+        // If the timer is already running, cancel it... 
+        if (IsActive())
+            {
+            Cancel();
+            }
+            
+        // ...and set the new timer. If timer has specified maximum time, enforce that.
+        if ( iMaximumTime.Int() != 0 && (0 == aInterval.Int() || aInterval > iMaximumTime) ) 
+            {
+            // Maximum time has been specified, and interval parameter is such that 
+            // it should be enforced
+            After(iMaximumTime);
+            
+            COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::Set - Using Maximum time %d" ), iMaximumTime.Int() ) );
+            }
+        else if ( iMaximumTime.Int() == 0 && aInterval.Int() == 0 )
+            {
+            // No maximum time specified and interval calls for infinite duration.
+            // --> Do not set the timer at all.
+            }
+        else
+            {    
+            // Otherwise just set the time to specified interval.
+            After(aInterval);
+            }
+        }
+    else
+        {
+        COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::Set - Scheduler not active, set ignored" ) ) );
+        // If there are loaded plugins when shutting down the server, timer setting does occur
+        }    
+
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::Set - return" ) ) );
+    }
+
+// -----------------------------------------------------------------------------
+// RunL() function will be run after the specified system time expires,
+// i.e. time is set by After() method,
+// -----------------------------------------------------------------------------
+void CSensrvTimer::RunL()
+    {
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::RunL()" )) );
+
+    iCallback.TimerFired(iTimerId);
+
+    COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTimer::RunL - return" ) ) );
+    }
+
+//  End of File