// Copyright (c) 1997-2009 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\system\t_nanowait.cpp

// Overview:

// Test Kernal::NanoWait() against the FastCounter.

// API Information:

// NTimer

// Details:

// - Start one 100 msec NanoWait delay and verify that the 

// delay time is correct.

// Platforms/Drives/Compatibility:

// All.

// Assumptions/Requirement/Pre-requisites:

// Failures and causes:

// Base Port information:

// 

//

#include <e32test.h>

#include <e32uid.h>

#include <e32hal.h>

#include <hal.h>

#include "d_nanowait.h"

RTest test(_L("t_nanowait"));

RNanoWait nanowait;

TBool PauseOnError = 0;

#define GETCH()		(PauseOnError&&test.Getch())

#define TEST(c)		((void)((c)||(test.Printf(_L("Failed at line %d\n"),__LINE__),GETCH(),test(0),0)))

#define CHECK(c)	((void)(((c)==0)||(test.Printf(_L("Error %d at line %d\n"),(c),__LINE__),GETCH(),test(0),0)))

#ifdef __WINS__

#define TESTTIME(v,min,max) test.Printf(_L("Expected range [%d,%d]\n"),min,max+1)

#else

#define TESTTIME(v,min,max) TEST(v>=min && v<max)

#endif

const TPtrC KLddFileName=_L("D_NANOWAIT.LDD");

GLDEF_C TInt E32Main()

//

// Test NanoWait() delays

//

    {

    // To use in command line

    	TBool pause = EFalse;

    TBuf<256> cmdline;

	User::CommandLine(cmdline);

	if( cmdline == _L("-p"))

		{

			pause = ETrue;			

		}

	test.Title();

	test.Start(_L("Load D_NanoWait.LDD"));

	TInt r=User::LoadLogicalDevice(KLddFileName);

	TEST(r==KErrNone || r==KErrAlreadyExists);

	test.Next(_L("Test NanoWait delay"));

	r=nanowait.Open();

	CHECK(r);

	TInt requested = 100000000;  // nsec = 100 msec

	TUint32 startTick;

	TUint32 endTick;

	TInt nanokernel_tick_period;

	HAL::Get(HAL::ENanoTickPeriod, nanokernel_tick_period );

	nanokernel_tick_period *= 1000; 	// convert from micro sec to nsec

	test.Printf(_L("Test parameters: total requested:%d nsec\n"), requested);

	startTick = User::NTickCount();

	r=nanowait.StartNanoWait(1, requested);

	endTick = User::NTickCount();

	startTick *= nanokernel_tick_period;	// in nsec

	endTick   *= nanokernel_tick_period;	// in nsec

	TInt measured  = endTick-startTick;

	TInt diff = measured - requested;

	test.Printf(_L("Requested delay:%10d nsec\n"), requested);

	test.Printf(_L("Measured delay :%10d nsec\n"), measured);

	test.Printf(_L("Difference     :%10d nsec\n"), diff);

	test.End();

	if( pause )

		{

		test.Printf(_L("Press any key\n"));

		test.Getch();	

		}

	return(KErrNone);

    }