kerneltest/e32test/timestamp/t_timestamp.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 16:24:37 +0300
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// Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//  
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// This test checks the accuracy if NKern::Timestamp (in SMP systems) or
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// NKern::Fastcounter (in unicore), when low power modes are being selected
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// during idle.
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// Platforms requiring this test need to provide a d_timestamp.pdd which
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// implements the functions required to test the accurary. If no pdd is 
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// supplied the test is skipped and claims to succeed.
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// Overview:
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//-------------------------------------------------------------------------------------------
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//! @SYMTestCaseID				KBASE-t_timestamp-2706
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//! @SYMTestCaseDesc			verifying that NKern::Timestamp/FastCounter works correctly 
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//!                             accross low power modes
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//! @SYMPREQ					417-52765
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//! @SYMTestPriority			High
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//! @SYMTestActions				
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//! 1. This test harness first gets information about NKern::Timestamp or
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//!     NKern::FastCounter in particular its frequency. It also obtains
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//!     the following constants: Number of timer to run the test, number
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//!     of retries before giving up if no low power modes are detected,
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//!     and acceptable error percent. Length in nanokernel ticks of each cycle
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//! 2. Then it measures the timestamp before and after a time interval 
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//!    controlled by NTimerIntervalInS (constant is in seconds)
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//!    2.1 If in period of KTimerInterval a low power mode was entered and 
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//!        the timer underlying NKern::Timestamp had to be restated then before
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//!        and after time is stored. The cycle is considered successful.
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//! 3. If KNMaxentries occur with no successful entries the test fails
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//! 4. If any valid entry has an interval as measured with NKern::Timestamp that
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//!    is outside KNErrPercent of the same interval as measured with nanokernel 
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//!    ticks then the test fails
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//! 5. If KNValidRuns valid cycles have an acceptable error the test succeeds
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//! 
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//! @SYMTestExpectedResults 
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//!     test passed
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//-------------------------------------------------------------------------------------------
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#include <e32std.h>
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#include <e32base.h>
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#include <e32debug.h>
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#define __E32TEST_EXTENSION__
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#include <e32test.h>
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#include <hal.h>
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#include <u32hal.h>
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#include <e32svr.h>
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#include "d_timestamp.h"
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_LIT(KTimestampTestLddFileName,"D_TIMESTAMP.LDD");
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_LIT(KTimestampTestPddFileName,"D_TIMESTAMP.PDD");
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RTest test(_L("T_TIMESTAMP"));
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LOCAL_C void UnloadDrivers()
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	{
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    test.Printf(_L("Unloading LDD\n"));
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	TInt r=User::FreeLogicalDevice(RTimestampTest::Name());
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    test_KErrNone(r);
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	TName pddName(RTimestampTest::Name());
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	_LIT(KPddWildcardExtension,".*");
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	pddName.Append(KPddWildcardExtension);
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	TFindPhysicalDevice findPD(pddName);
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	TFullName findResult;
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	r=findPD.Next(findResult);
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	while (r==KErrNone)
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		{
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        test.Printf(_L("Unloading PDD: %S\n"),&findResult);
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		r=User::FreePhysicalDevice(findResult);
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        test_KErrNone(r);
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		findPD.Find(pddName); // Reset the find handle now that we have deleted something from the container.
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		r=findPD.Next(findResult);
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		} 
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	}
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GLDEF_C TInt E32Main()
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    {
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    TBool dontFail = (User::CommandLineLength()!=0);
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    test.Title();
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    test.Start(_L("Timestamp accuracy test"));
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    TInt r;
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    TRequestStatus st;
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    r = User::LoadPhysicalDevice(KTimestampTestPddFileName);
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    if (KErrNotFound == r)
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        {
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        test.Printf(_L("No timestamp pdd, test skipped\n"));
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        test.End(); // skip test if this platform does not supply a PDD
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        return 0;
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diff changeset
   108
        }
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parents:
diff changeset
   109
    
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parents:
diff changeset
   110
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diff changeset
   111
	r=User::LoadLogicalDevice(KTimestampTestLddFileName);
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parents:
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   112
	test(r==KErrNone || r==KErrAlreadyExists);
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parents:
diff changeset
   113
    
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   114
    RTimestampTest ldd;
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   115
    r = ldd.Open();
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parents:
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   116
    test_KErrNone(r);
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parents:
diff changeset
   117
    
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   118
    test.Next(_L("Get timestamp frequency"));
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   119
    STimestampTestConfig info;
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   120
    r = ldd.Config(info);
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   121
    test_KErrNone(r);
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   122
    
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   123
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   124
    TUint retries = 0;
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   125
    TUint validruns = 0;
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parents:
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   126
    
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   127
    test.Next(_L("Get nanotick frequency"));
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parents:
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   128
	TInt tickPeriod = 0;
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   129
	r = HAL::Get(HAL::ENanoTickPeriod, tickPeriod);
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   130
    test_KErrNone(r);
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parents:
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   131
    test.Printf(_L(" tick period in uS== %d\n"), tickPeriod);
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   132
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   133
    TInt ticks = info.iTimerDurationS*1000000/tickPeriod;
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   134
    TUint64 expected = info.iTimerDurationS*info.iFreq;
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   135
    TUint64 acceptError = info.iErrorPercent*expected/100;
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parents:
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   136
    
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   137
    test.Printf(_L("running at %dHz for %d interations, each lasting %d seconds and with %d retries\n"),
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parents:
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   138
                info.iFreq,
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parents:
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   139
                info.iIterations,
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   140
                info.iTimerDurationS,
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   141
                info.iRetries
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   142
        );
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   143
    
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   144
    test.Printf(_L("expecting %lu with up to %lu error\n"),expected,acceptError);
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diff changeset
   145
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   146
    test.Next(_L("test timer interval"));
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parents:
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   147
    STimestampResult result;
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parents:
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   148
    STimestampResult* validResults = new STimestampResult[info.iIterations];
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parents:
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   149
    memset(&validResults[0],0,sizeof(validResults));
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   150
    ldd.Start(st,ticks);
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   151
    User::WaitForRequest(st);
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parents:
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   152
    test_KErrNone(st.Int());
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parents:
diff changeset
   153
    
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parents:
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   154
    FOREVER
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parents:
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   155
        {
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parents:
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   156
        ldd.WaitOnTimer(st,result);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   157
        User::WaitForRequest(st);
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parents:
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   158
        test_KErrNone(st.Int());
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   159
        TUint64 error = (result.iDelta>expected) ? result.iDelta-expected : expected - result.iDelta;
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diff changeset
   160
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   161
        if (error < acceptError)
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parents:
diff changeset
   162
            {
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parents:
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   163
            test.Printf(_L("Got %lu expected %lu, LPM Entered:%d, error %lu is OK \n"),
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parents:
diff changeset
   164
                        result.iDelta,expected,result.iLPMEntered,error);
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diff changeset
   165
            }
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parents:
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   166
        else 
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parents:
diff changeset
   167
            {
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parents:
diff changeset
   168
            test.Printf(_L("Got %lu expected %lu, LPM Entered:%d, error %lu is BAD\n"),
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parents:
diff changeset
   169
                        result.iDelta,expected,result.iLPMEntered,error);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   170
            if (!dontFail) 
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parents:
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   171
                {
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parents:
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   172
                delete [] validResults;
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parents:
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   173
                ldd.Close();
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parents:
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   174
                UnloadDrivers();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   175
                test(error < acceptError);
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parents:
diff changeset
   176
                }
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   177
            }
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parents:
diff changeset
   178
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diff changeset
   179
        if (result.iLPMEntered)
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parents:
diff changeset
   180
            {
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parents:
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   181
            retries = 0;
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parents:
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   182
            validResults[validruns] = result;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   183
            if (++validruns==info.iIterations) break;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   184
            }
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parents:
diff changeset
   185
        else
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   186
            {
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   187
            retries++;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   188
            if (retries==info.iRetries) 
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parents:
diff changeset
   189
                {
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   190
                test.Printf(_L("several retries with no power mode entry ... aborting ...\n"));
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   191
                ldd.Close();
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parents:
diff changeset
   192
                delete [] validResults;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   193
                UnloadDrivers();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   194
                test_Compare(retries,<,info.iRetries);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   195
                }
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parents:
diff changeset
   196
            
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parents:
diff changeset
   197
            }
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parents:
diff changeset
   198
        }
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   199
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parents:
diff changeset
   200
    delete [] validResults;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   201
    ldd.Close();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   202
    UnloadDrivers();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   203
    test.End();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   204
	return(0);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   205
    }