Symaptic: os/kernelhwsrv/kerneltest/e32test/usbho/t_usbdi/inc/BasicWatcher.h@260cb5ec6c19

     1 #ifndef __BASIC_WATCHER_H

     2 #define __BASIC_WATCHER_H

     4 /*

     5 * Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     6 * All rights reserved.

     7 * This component and the accompanying materials are made available

     8 * under the terms of the License "Eclipse Public License v1.0"

     9 * which accompanies this distribution, and is available

    10 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

    11 *

    12 * Initial Contributors:

    13 * Nokia Corporation - initial contribution.

    14 *

    15 * Contributors:

    16 *

    17 * Description:

    18 * @file BasicWatcher.h

    19 * @internalComponent

    20 *

    21 *

    22 */

    26 #include <e32base.h>

    27 #include <d32usbdi.h>

    28 #include "testdebug.h"

    30 namespace NUnitTesting_USBDI

    31 	{

    34 /**

    35 This class watches for asynchronous completions and calls back

    36 */

    37 class CBasicWatcher : public CActive

    38 	{

    39 public:

    40 	CBasicWatcher(const TCallBack& aCallBack,TInt aPriority=EPriorityStandard);

    41 	virtual ~CBasicWatcher();

    43 	void CompleteNow(TInt aCompletionCode = KErrNone);

    44 	void StartWatching();

    46 protected: // From CActive

    47 	void DoCancel();

    48 	void RunL();

    49 	TInt RunError(TInt aError);

    51 private:

    52 	TCallBack iCallBack;

    53 	TInt iCompletionCode;

    54 	};

    60 /**

    61 This class describes a watcher for resumptions of interfaces

    62 */

    63 class CInterfaceWatcher : public CActive

    64 	{

    65 public:

    66 	/**

    67 	Constructor, build

    68 	@param aInterface the usb interface to suspend

    69 	@param aCallBack the call back object to call once a resumption signal has happened

    70 	*/

    71 	CInterfaceWatcher(RUsbInterface& aInterface,const TCallBack& aCallBack)

    72 	:	CActive(EPriorityUserInput),

    73 		iUsbInterface(aInterface),

    74 		iResumeCallBack(aCallBack),

    75 		iCompletionCode(KErrNone)

    76 		{

    77 		CActiveScheduler::Add(this);

    78 		}

    80 	/**

    81 	Destructor

    82 	*/

    83 	~CInterfaceWatcher()

    84 		{

    85 		Cancel();

    86 		}

    88 	/**

    89 	Suspend the interface and watch for resumtions

    90 	*/

    91 	void SuspendAndWatch()

    92 		{

    93 		iUsbInterface.PermitSuspendAndWaitForResume(iStatus);

    94 		SetActive();

    95 		}

    97 	/**

    98 	Obtains the most recent completion code for the interface resumption

    99 	asynchronous action

   100 	@return the completion error code

   101 	*/

   102 	TInt CompletionCode() const

   103 		{

   104 		return iCompletionCode;

   105 		}

   107 protected: // From CActive

   109 	/**

   110 	*/

   111 	void DoCancel()

   112 		{

   113 		LOG_FUNC

   114 		iUsbInterface.CancelPermitSuspend();

   115 		}

   118 	/**

   119 	*/

   120 	void RunL()

   121 		{

   122 		LOG_FUNC

   123 		iCompletionCode = iStatus.Int();

   124 		User::LeaveIfError(iResumeCallBack.CallBack());

   125 		}

   127 	/**

   128 	*/

   129 	TInt RunError()

   130 		{

   131 		LOG_FUNC

   133 		return KErrNone;

   134 		}

   136 private:

   138 	/**

   139 	The USB interface resource

   140 	*/

   141 	RUsbInterface& iUsbInterface;

   143 	/**

   144 	*/

   145 	TCallBack iResumeCallBack;

   147 	/**

   148 	*/

   149 	TInt iCompletionCode;

   150 	};

   153 	}

   155 #endif

author	sl
	Tue, 10 Jun 2014 14:32:02 +0200
changeset 1	260cb5ec6c19
permissions	-rw-r--r--