kerneltest/e32test/active/t_idle.cpp
changeset 0 a41df078684a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/active/t_idle.cpp	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,169 @@
+// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "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:
+// e32test\active\t_idle.cpp
+// Overview:
+// Test the CIdle class. A CIdle and CTimer run on the same active scheduler and
+// the test displays how their callback function and RunL respectively are called.
+// API Information:
+// CIdle 
+// Details:
+// - Create and install active scheduler.
+// - Create and start a timer, add this to the active scheduler, request an event
+// after a specified interval. The timer will reschedule itself for a finite
+// number of times, then it will cancel the CIdle object and then reschedule
+// itself again and eventually it will stop the active scheduler.
+// - Create a CIdle active object, start a background task that is encapsulated in
+// callback function. The CIdle will keep reschedule itself by always returning
+// TRUE from the callback.
+// - Output some text from timer's RunL and CIdle's callback to show when they are
+// called and how they interleave.
+// Platforms/Drives/Compatibility:
+// All.
+// Assumptions/Requirement/Pre-requisites:
+// Failures and causes:
+// Base Port information:
+// 
+//
+
+#include <e32test.h>
+
+enum {EIdlePriority=1000,EMoreIdlePriority=800};
+
+class CMyRequestManager : public CActiveScheduler
+	{
+public:
+	virtual void Error(TInt anError) const;
+	};
+
+class CMyTimer : public CTimer
+	{
+public:
+	static CMyTimer* New();
+	void Start();
+	virtual void RunL();
+protected:
+	CMyTimer(TInt aPriority);
+private:
+	enum {EMaxCount=10,EStopCount=5,ETimeReq=100000};
+	TInt iCount;
+	};
+
+LOCAL_D RTest test(_L("T_IDLE"));
+LOCAL_D CIdle* MoreIdle;
+LOCAL_D TInt TheCount=0;
+
+void CMyRequestManager::Error(TInt anError) const
+//
+// Called if any Run() method leaves.
+//
+	{
+
+	test.Panic(anError,_L("CMyRequestManager::Error"));
+	}
+
+CMyTimer* CMyTimer::New()
+//
+// Create a new CMyTimer.
+//
+	{
+
+	return(new CMyTimer(EIdlePriority));
+	}
+
+CMyTimer::CMyTimer(TInt aPriority)
+//
+// Constructor
+//
+	: CTimer(aPriority),iCount(0)
+	{}
+
+void CMyTimer::Start()
+//
+// The timer has completed.
+//
+	{
+
+	TRAPD(r, ConstructL());
+	test(r==KErrNone);
+	CActiveScheduler::Add(this);
+	After(ETimeReq);
+	}
+
+void CMyTimer::RunL()
+//
+// The timer has completed.
+//
+	{
+
+	iCount++;
+	test.Printf(_L("Timer %03d\n"),iCount);
+	if (iCount==EStopCount)
+		MoreIdle->Cancel();
+	if (iCount<EMaxCount)
+		After(ETimeReq);
+	else
+		{
+		test.Printf(_L("\n"));
+		DoCancel();
+		CActiveScheduler::Stop();
+		}
+	}
+
+TInt IdleResponse(TAny*)
+//
+//	Respond to the idle callback
+//
+	{
+
+	test.Printf(_L("\rIdle response number : %6d "),++TheCount);
+	return(TRUE);
+	}
+
+TInt IdleCancel(TAny*)
+//
+//	Cancel the other idle object
+//
+	{
+
+	if (TheCount>9)
+		{
+		MoreIdle->Cancel();
+		return(FALSE);
+		}
+	return(TRUE);
+	}
+		
+GLDEF_C TInt E32Main()
+//
+// Test idle objects.
+//
+    {
+	
+	test.Title();
+	test.Start(_L("Testing idle object cancellation"));
+//
+	CMyRequestManager* pR=new CMyRequestManager;
+	test(pR!=NULL);
+	CActiveScheduler::Install(pR);
+//
+	CMyTimer* pT=CMyTimer::New();
+	pT->Start();
+	MoreIdle=CIdle::New(EIdlePriority);
+	MoreIdle->Start(&IdleResponse);
+	CActiveScheduler::Start();	
+//
+	test.End();
+	return(0);
+    }
+