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// Copyright (c) 2002-2009 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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// f32\sfile\sf_thread.cpp
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//
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//
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#include "sf_std.h"
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#include <u32exec.h>
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#include "sf_file_cache.h"
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#define __CHECK_DRVNUM(d) {__ASSERT_DEBUG(d>=EDriveA && d<=EDriveZ,Fault(EFsThreadBadDrvNum));}
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#ifdef __X86__
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const TInt KRequestThreadStackSize = 0x4000;
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#else
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const TInt KRequestThreadStackSize = 0x3000;
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#endif
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const TInt KFinaliseTimerPeriod = 10 * 1000 * 1000; // default 10S finalisation timeout
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TFsDriveThread FsThreadManager::iFsThreads[KMaxDrives];
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TUint FsThreadManager::iMainId=0;
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CDisconnectThread* FsThreadManager::iDisconnectThread=NULL;
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TUint FsThreadManager::iDisconnectThreadId=0;
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TFsDriveThread::TFsDriveThread()
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//
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//
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//
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:iIsAvailable(EFalse),iIsSync(EFalse),iThread(NULL),iId(0),iIsHung(EFalse),iMediaChangePending(EFalse)
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{
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TInt r=iFSLock.CreateLocal();
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__ASSERT_ALWAYS(r==KErrNone,Fault(EFsThreadConstructor));
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}
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TFsPluginThread::TFsPluginThread()
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//
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//
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//
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:iIsAvailable(ETrue),iThread(NULL),iId(0)
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{
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TInt r=iPluginLock.CreateLocal();
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iDriveNumber= KMaxDrives+1;
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__ASSERT_ALWAYS(r==KErrNone,Fault(EFsThreadConstructor));
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}
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TInt FsThreadManager::CreateDisconnectThread()
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//
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// Called just once at startup
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//
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{
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__PRINT(_L("Create disconnect thread"));
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TRAPD(r,iDisconnectThread=CDisconnectThread::NewL());
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if(r!=KErrNone)
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return(r);
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TRAP(r,iDisconnectThreadId=iDisconnectThread->StartL());
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if(r!=KErrNone)
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{
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delete(iDisconnectThread);
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iDisconnectThread=NULL;
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iDisconnectThreadId=0;
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}
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__THRD_PRINT2(_L("iDisconnectThread=0x%x id=0x%x"),iDisconnectThread,iDisconnectThreadId);
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return(r);
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}
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TBool FsThreadManager::IsDisconnectThread()
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//
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// Return ETrue if the calling thread is the disconnect thread
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//
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{
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return(iDisconnectThreadId==RThread().Id());
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}
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TInt FsThreadManager::InitDrive(TInt aDrvNumber,TBool aIsSync)
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//
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// Create a drive thread
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// Should only by called from main file server thread with drive thread unavailable
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//
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//
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{
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__PRINT1(_L("FsThreadManager::InitDrive() drive=%d"),aDrvNumber);
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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__ASSERT_ALWAYS(!t.iIsAvailable,Fault(EThreadManagerInitDrive));
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t.iIsSync=ETrue;
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return ChangeSync(aDrvNumber, aIsSync);
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}
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TInt FsThreadManager::ChangeSync(TInt aDrvNumber,TBool aIsSync)
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//
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// Change if a drive is syncronouse after it has been inishalised.
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// Should be called from the main thread.
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// Any pending oporations will be compleated.
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//
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{
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__PRINT1(_L("FsThreadManager::ChangeSync() drive=%d"),aDrvNumber);
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__CHECK_DRVNUM(aDrvNumber);
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__CHECK_MAINTHREAD();
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LockDrive(aDrvNumber);
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TFsDriveThread& t=FsThreadManager::GetFsDriveThread(aDrvNumber);
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TInt r=KErrNone;
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if (aIsSync!=t.iIsSync)
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{
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if (!aIsSync)
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{
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if(!t.iThread)
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{
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TRAP(r,t.iThread=CDriveThread::NewL());
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if(r!=KErrNone)
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{
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UnlockDrive(aDrvNumber);
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return(r);
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}
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}
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TRAP(r,t.iId=t.iThread->StartL(aDrvNumber));
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__THRD_PRINT2(_L("Starting thread 0x%x returned %d"),&t,r);
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if(r!=KErrNone)
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aIsSync=ETrue;
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else
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{
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t.iIsSync=EFalse;
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__THRD_PRINT1(_L("drive thread id=0x%x"),t.iId);
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}
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}
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if (aIsSync)
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{
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if (t.iThread)
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{
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t.iThread->CompleteAllRequests(KErrNotReady);
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t.iThread->iExit=ETrue;
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t.iThread=NULL;
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}
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t.iIsSync=ETrue;
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}
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}
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if (r==KErrNone)
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t.iIsAvailable=ETrue;
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UnlockDrive(aDrvNumber);
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return r;
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}
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void FsThreadManager::CloseDrive(TInt aDrvNumber)
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//
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// Close a drive thread
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// Assumes already locked or safe
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// If file system in not synchronous then should be called from a drive thread request
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//
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{
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__PRINT1(_L("FsThreadManager::CloseDrive() drive=%d"),aDrvNumber);
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__CHECK_DRVNUM(aDrvNumber);
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// no need to cancel requests if synchronous since queued
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if(!FsThreadManager::IsDriveSync(aDrvNumber,EFalse))
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{
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CDriveThread* pT=NULL;
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TInt r=FsThreadManager::GetDriveThread(aDrvNumber,&pT);
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__ASSERT_ALWAYS(r==KErrNone && pT,Fault(EDismountFsDriveThread));
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pT->CompleteAllRequests(KErrNotReady);
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}
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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__ASSERT_ALWAYS(t.iIsAvailable,Fault(EFsThreadDriveClose1));
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if(!t.iIsSync)
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{
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__ASSERT_ALWAYS(FsThreadManager::IsDriveThread(aDrvNumber,EFalse),Fault(EFsThreadDriveClose2));
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StopFinalisationTimer(aDrvNumber);
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// drive thread will exit when request completed
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t.iThread->iExit=ETrue;
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// Ensure that subsequent remounts use a new thread AND a new CDriveThread object -
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// re-use of the CDriveThread object can lead to deadlock while both old & new threads are active.
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t.iThread = NULL;
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// Empty the closed file queue for this drive before the thread ends and the CDriveThread object
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// is deleted because the closed file queue contains a list of CFileCache objects which will
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// call CRequestThread::RemoveTimer() when closed
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TClosedFileUtils::Remove(aDrvNumber);
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}
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else
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{
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__CHECK_MAINTHREAD();
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t.iIsSync=EFalse;
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}
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t.iIsAvailable=EFalse;
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t.iId=0;
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}
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TBool FsThreadManager::IsDriveAvailable(TInt aDrvNumber,TBool aIsLock)
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//
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//
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//
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{
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__CHECK_DRVNUM(aDrvNumber);
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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if(aIsLock)
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t.iFSLock.Wait();
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TBool b=t.iIsAvailable;
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if(aIsLock)
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t.iFSLock.Signal();
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__THRD_PRINT2(_L("drive thread %d iIsAvailable=%d"),aDrvNumber,b);
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return(b);
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}
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TBool FsThreadManager::IsDriveSync(TInt aDrvNumber,TBool aLock)
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//
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//
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//
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{
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__CHECK_DRVNUM(aDrvNumber);
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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if(aLock)
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t.iFSLock.Wait();
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TBool b=(t.iIsAvailable&&t.iIsSync);
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if(aLock)
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t.iFSLock.Signal();
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__THRD_PRINT2(_L("drive thread %d iIsSync=%d"),aDrvNumber,b);
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return(b);
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}
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TInt FsThreadManager::GetDriveThread(TInt aDrvNumber, CDriveThread** aDrvThread)
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//
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// Assumes locked or called from the drive thread
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//
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{
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__CHECK_DRVNUM(aDrvNumber);
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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*aDrvThread=NULL;
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TInt r=KErrNone;
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if(!t.iIsAvailable)
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r=KErrNotReady;
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else if(t.iIsSync)
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r=KErrAccessDenied;
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else
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{
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*aDrvThread=t.iThread;
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__ASSERT_DEBUG(*aDrvThread,Fault(EFsThreadGetThread));
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}
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__THRD_PRINT4(_L("GetDriveThread(%d) r %d id=0x%x *aDrvThread=0x%x"),aDrvNumber, r, t.iId, *aDrvThread);
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return r;
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}
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void FsThreadManager::LockDrive(TInt aDrvNumber)
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//
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// Lock the TFsDriveThread object for the aDrvNumber drive
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//
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{
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__CHECK_DRVNUM(aDrvNumber);
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__THRD_PRINT1(_L("FsThreadManager::LockDrive(%d)"),aDrvNumber);
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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t.iFSLock.Wait();
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}
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void FsThreadManager::UnlockDrive(TInt aDrvNumber)
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//
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// Unlock the TFsDriveThread object for the aDrvNumber drive
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//
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{
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__CHECK_DRVNUM(aDrvNumber);
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__THRD_PRINT1(_L("FsThreadManager::UnlockDrive(%d)"),aDrvNumber);
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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t.iFSLock.Signal();
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}
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void FsThreadManager::SetDriveHung(TInt aDrvNumber, TBool aIsHung)
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{
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if (aDrvNumber < EDriveA || aDrvNumber > EDriveZ)
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return;
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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// quick exit if hung state not changing or drive thread not available
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if ((!t.iIsAvailable) || (t.iIsHung == aIsHung))
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return;
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t.iFSLock.Wait();
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// Don't clear the hung state if this is a synchronous request
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// and the drive is asynchronous - we need to wait for whatever
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// asynchronous request caused the hang to complete first.
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TUint id=RThread().Id();
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TBool isDriveThread = t.iIsSync || (!t.iIsSync && t.iId == id);
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__THRD_PRINT3(_L("Set %d Hung %d. Is Drive thread %d"), aDrvNumber, aIsHung, isDriveThread);
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if (!aIsHung && !isDriveThread)
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{
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t.iFSLock.Signal();
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return;
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}
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t.iIsHung = aIsHung;
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// if we're no longer hung, see if there's a media change pending
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// and if so issue one now
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TBool mediaChangePending = EFalse;
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if(!aIsHung)
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{
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mediaChangePending = t.iMediaChangePending;
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t.iMediaChangePending = EFalse;
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}
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t.iFSLock.Signal();
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// If the drive is now hung we must complete all requests in the drive thread's
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// queue - and all subsequent requests - with KErrNotReady to prevent deadlock.
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// For example, the notifier server may try to access the loader but one of the
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// requests in the queue may already belong to the loader.
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if (aIsHung && t.iThread)
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t.iThread->CompleteClientRequests(KErrNotReady);
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if(mediaChangePending)
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FsNotify::DiskChange(aDrvNumber);
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}
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TBool FsThreadManager::IsDriveHung(TInt aDrvNumber)
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{
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if (aDrvNumber < EDriveA || aDrvNumber > EDriveZ)
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return EFalse;
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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// __THRD_PRINT3(_L("Is %d Hung = %d"), aDrvNumber, t.iIsHung);
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return t.iIsHung;
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}
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// If the drive is hung, then don't complete any disk change
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// notifications until the request causing the hang completes.
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void FsThreadManager::SetMediaChangePending(TInt aDrvNumber)
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{
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if (aDrvNumber < EDriveA || aDrvNumber > EDriveZ)
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return;
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TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
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if (!t.iIsAvailable)
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return;
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t.iFSLock.Wait();
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|
359 |
t.iMediaChangePending = ETrue;
|
|
|
360 |
t.iFSLock.Signal();
|
|
|
361 |
}
|
|
|
362 |
|
|
|
363 |
void FsThreadManager::SetMainThreadId()
|
|
|
364 |
//
|
|
|
365 |
// called at file server startup, assumes called from main file server thread
|
|
|
366 |
//
|
|
|
367 |
{
|
|
|
368 |
iMainId=RThread().Id();
|
|
|
369 |
__THRD_PRINT1(_L("Main thread id = 0x%x"),iMainId);
|
|
|
370 |
}
|
|
|
371 |
|
|
|
372 |
TBool FsThreadManager::IsDriveThread(TInt aDrvNumber,TBool aIsLock)
|
|
|
373 |
//
|
|
|
374 |
// Return ETrue if the calling thread is the aDrvNumber drive thread
|
|
|
375 |
//
|
|
|
376 |
{
|
|
|
377 |
__CHECK_DRVNUM(aDrvNumber);
|
|
|
378 |
TFsDriveThread& t=GetFsDriveThread(aDrvNumber);
|
|
|
379 |
TUint id=RThread().Id();
|
|
|
380 |
if(aIsLock)
|
|
|
381 |
t.iFSLock.Wait();
|
|
|
382 |
TBool b = t.iIsAvailable && (!t.iIsSync && t.iId==id || t.iIsSync);
|
|
|
383 |
if(aIsLock)
|
|
|
384 |
t.iFSLock.Signal();
|
|
|
385 |
return(b);
|
|
|
386 |
}
|
|
|
387 |
|
|
|
388 |
TBool FsThreadManager::IsMainThread()
|
|
|
389 |
//
|
|
|
390 |
// Returns ETrue if calling thread is same as main file server thread
|
|
|
391 |
//
|
|
|
392 |
{
|
|
|
393 |
return((TUint)(RThread().Id())==iMainId);
|
|
|
394 |
}
|
|
|
395 |
|
|
|
396 |
|
|
|
397 |
void FsThreadManager::StartFinalisationTimer(TInt aDrvNumber)
|
|
|
398 |
{
|
|
|
399 |
if (aDrvNumber < EDriveA || aDrvNumber > EDriveZ)
|
|
|
400 |
return;
|
|
|
401 |
|
|
|
402 |
// If the message could cause disk modification, make sure that the finalisation
|
|
|
403 |
// timer is queued so that we can mark the disk consistent at some point in the future
|
|
|
404 |
CDriveThread* driveThread=NULL;
|
|
|
405 |
TInt r = GetDriveThread(aDrvNumber, &driveThread);
|
|
|
406 |
if(r == KErrNone && driveThread != NULL)
|
|
|
407 |
driveThread->StartFinalisationTimer();
|
|
|
408 |
}
|
|
|
409 |
|
|
|
410 |
void FsThreadManager::StopFinalisationTimer(TInt aDrvNumber)
|
|
|
411 |
{
|
|
|
412 |
if (aDrvNumber < EDriveA || aDrvNumber > EDriveZ)
|
|
|
413 |
return;
|
|
|
414 |
|
|
|
415 |
// If the message could cause disk modification, make sure that the finalisation
|
|
|
416 |
// timer is queued so that we can mark the disk consistent at some point in the future
|
|
|
417 |
CDriveThread* dT=NULL;
|
|
|
418 |
TInt r = GetDriveThread(aDrvNumber, &dT);
|
|
|
419 |
if(r == KErrNone && dT != NULL)
|
|
|
420 |
{
|
|
|
421 |
dT->StopFinalisationTimer();
|
|
|
422 |
}
|
|
|
423 |
}
|
|
|
424 |
|
|
|
425 |
CRequestThread::CRequestThread()
|
|
|
426 |
//
|
|
|
427 |
//
|
|
|
428 |
//
|
|
|
429 |
:iList(_FOFF(CFsRequest,iLink))
|
|
|
430 |
{
|
|
|
431 |
//iRequest=NULL;
|
|
|
432 |
//iIsWaiting=EFalse;
|
|
|
433 |
iExit=EFalse;
|
|
|
434 |
}
|
|
|
435 |
|
|
|
436 |
TInt CRequestThread::Initialise()
|
|
|
437 |
//
|
|
|
438 |
// Initialise
|
|
|
439 |
//
|
|
|
440 |
{
|
|
|
441 |
TInt r=iListLock.CreateLocal();
|
|
|
442 |
return(r);
|
|
|
443 |
}
|
|
|
444 |
|
|
|
445 |
CRequestThread::~CRequestThread()
|
|
|
446 |
//
|
|
|
447 |
//
|
|
|
448 |
//
|
|
|
449 |
{
|
|
|
450 |
__ASSERT_ALWAYS(iList.IsEmpty(),Fault(ERequestThreadDestructor));
|
|
|
451 |
iListLock.Close();
|
|
|
452 |
|
|
|
453 |
if(iThread.Handle() != 0)
|
|
|
454 |
{
|
|
|
455 |
iThread.Close();
|
|
|
456 |
}
|
|
|
457 |
delete iTimer;
|
|
|
458 |
}
|
|
|
459 |
|
|
|
460 |
LOCAL_C TInt ThreadFunction(TAny* aPtr)
|
|
|
461 |
//
|
|
|
462 |
//
|
|
|
463 |
//
|
|
|
464 |
{
|
|
|
465 |
__THRD_PRINT(_L("ThreadFunction()"));
|
|
|
466 |
User::SetCritical(User::ESystemCritical);
|
|
|
467 |
CRequestThread* pT=(CRequestThread*)aPtr;
|
|
|
468 |
TInt r = pT->ThreadFunction();
|
|
|
469 |
delete pT;
|
|
|
470 |
return r;
|
|
|
471 |
}
|
|
|
472 |
|
|
|
473 |
void CRequestThread::CompleteAllRequests(TInt aValue)
|
|
|
474 |
{
|
|
|
475 |
__THRD_PRINT(_L("CRequestThread::CompleteAllRequests()"));
|
|
|
476 |
iListLock.Wait();
|
|
|
477 |
while(!iList.IsEmpty())
|
|
|
478 |
{
|
|
|
479 |
CFsRequest* pR=iList.First();
|
|
|
480 |
pR->iLink.Deque();
|
|
|
481 |
iListLock.Signal();
|
|
|
482 |
pR->Complete(aValue);
|
|
|
483 |
iListLock.Wait();
|
|
|
484 |
}
|
|
|
485 |
iListLock.Signal();
|
|
|
486 |
__THRD_PRINT(_L("all requests completed"));
|
|
|
487 |
}
|
|
|
488 |
|
|
|
489 |
TInt CRequestThread::ThreadFunction()
|
|
|
490 |
//
|
|
|
491 |
// entry point for the thread
|
|
|
492 |
//
|
|
|
493 |
{
|
|
|
494 |
iTimer = CFsDeltaTimer::New(*this, EPriorityLess);
|
|
|
495 |
if (iTimer == NULL)
|
|
|
496 |
{
|
|
|
497 |
RThread::Rendezvous(KErrNoMemory);
|
|
|
498 |
return(KErrNone);
|
|
|
499 |
}
|
|
|
500 |
iTimer->iStatus = KErrNotReady;
|
|
|
501 |
|
|
|
502 |
CTrapCleanup* trapHandler=CTrapCleanup::New();
|
|
|
503 |
if (trapHandler==NULL)
|
|
|
504 |
{
|
|
|
505 |
RThread::Rendezvous(KErrNoMemory);
|
|
|
506 |
delete iTimer;
|
|
|
507 |
return(KErrNone);
|
|
|
508 |
}
|
|
|
509 |
|
|
|
510 |
RThread::Rendezvous(KErrNone);
|
|
|
511 |
|
|
|
512 |
TInt err = DoThreadInitialise();
|
|
|
513 |
if(err != KErrNone)
|
|
|
514 |
{
|
|
|
515 |
delete trapHandler;
|
|
|
516 |
return(KErrNone);
|
|
|
517 |
}
|
|
|
518 |
|
|
|
519 |
iExit=EFalse;
|
|
|
520 |
iIsWaiting=EFalse;
|
|
|
521 |
// start receiving
|
|
|
522 |
Receive();
|
|
|
523 |
CompleteAllRequests(KErrNotReady);
|
|
|
524 |
|
|
|
525 |
delete trapHandler;
|
|
|
526 |
return(KErrNone);
|
|
|
527 |
}
|
|
|
528 |
|
|
|
529 |
TInt CRequestThread::DoThreadInitialise()
|
|
|
530 |
{
|
|
|
531 |
return KErrNone;
|
|
|
532 |
}
|
|
|
533 |
|
|
|
534 |
TInt CRequestThread::DoStart(RThread& aThread)
|
|
|
535 |
//
|
|
|
536 |
// create thread and return handle
|
|
|
537 |
// necessary for client to close thread handle if successful
|
|
|
538 |
//
|
|
|
539 |
{
|
|
|
540 |
TInt r=aThread.Create(KNullDesC,::ThreadFunction,KRequestThreadStackSize,NULL,(TAny*)this);
|
|
|
541 |
__PRINT1(_L("CRequestThread::DoStart() r=%d"),r);
|
|
|
542 |
if(r!=KErrNone)
|
|
|
543 |
return(r);
|
|
|
544 |
TRequestStatus status;
|
|
|
545 |
aThread.Rendezvous(status);
|
|
|
546 |
if(status==KRequestPending)
|
|
|
547 |
{
|
|
|
548 |
aThread.SetPriority(EPriorityLess);
|
|
|
549 |
aThread.Resume();
|
|
|
550 |
}
|
|
|
551 |
else
|
|
|
552 |
{
|
|
|
553 |
aThread.Kill(0);
|
|
|
554 |
}
|
|
|
555 |
User::WaitForRequest(status);
|
|
|
556 |
r = status.Int();
|
|
|
557 |
if(r!=KErrNone)
|
|
|
558 |
aThread.Close();
|
|
|
559 |
else
|
|
|
560 |
iThread = aThread;
|
|
|
561 |
|
|
|
562 |
return(r);
|
|
|
563 |
}
|
|
|
564 |
|
|
|
565 |
|
|
|
566 |
void CRequestThread::Receive()
|
|
|
567 |
//
|
|
|
568 |
// Receive and process requests
|
|
|
569 |
//
|
|
|
570 |
{
|
|
|
571 |
FOREVER
|
|
|
572 |
{
|
|
|
573 |
iListLock.Wait();
|
|
|
574 |
if(!iList.IsEmpty())
|
|
|
575 |
{
|
|
|
576 |
iRequest=iList.First();
|
|
|
577 |
iRequest->iLink.Deque();
|
|
|
578 |
__THRD_PRINT(_L("CRequestThread::Receive() dequeing"));
|
|
|
579 |
iListLock.Signal();
|
|
|
580 |
}
|
|
|
581 |
else
|
|
|
582 |
{
|
|
|
583 |
iIsWaiting=ETrue;
|
|
|
584 |
iRequest = NULL; // set to NULL so we can distinguish between a timer and a request signal
|
|
|
585 |
iListLock.Signal();
|
|
|
586 |
__THRD_PRINT(_L("CRequestThread::Receive() waiting"));
|
|
|
587 |
User::WaitForAnyRequest();
|
|
|
588 |
iIsWaiting=EFalse; // force main thread to post new requests on queue to avoid suspending this thread unnecessarily
|
|
|
589 |
}
|
|
|
590 |
__THRD_PRINT2(_L("received req 0x%x, func 0x%x"),iRequest, iRequest ? iRequest->Operation()->iFunction : -1);
|
|
|
591 |
|
|
|
592 |
iTimer->RunL();
|
|
|
593 |
|
|
|
594 |
if (iRequest)
|
|
|
595 |
iRequest->Process();
|
|
|
596 |
|
|
|
597 |
if(iExit)
|
|
|
598 |
break;
|
|
|
599 |
}
|
|
|
600 |
|
|
|
601 |
}
|
|
|
602 |
|
|
|
603 |
void CRequestThread::Deliver(CFsRequest* aRequest,TBool aIsFront, TBool aLowPriority)
|
|
|
604 |
//
|
|
|
605 |
// Deliver a request to the list from calling thread
|
|
|
606 |
// Write request directly to current request if thread is waiting
|
|
|
607 |
//
|
|
|
608 |
{
|
|
|
609 |
__THRD_PRINT4(_L("Deliver req %08x to threadId %lx aIsFront=%d iIsWaiting=%d"), aRequest, iThread.Id().Id(), aIsFront, iIsWaiting);
|
|
|
610 |
iListLock.Wait();
|
|
|
611 |
if (iList.IsEmpty())
|
|
|
612 |
{
|
|
|
613 |
// if this is a low priority request (and this is the only request in the queue),
|
|
|
614 |
// reduce the thread's priority to EPriorityAbsoluteBackground
|
|
|
615 |
if (iLowPriority != aLowPriority)
|
|
|
616 |
{
|
|
|
617 |
__THRD_PRINT(_L("LOWERING THREAD PRIORITY"));
|
|
|
618 |
iThread.SetPriority(aLowPriority?EPriorityAbsoluteBackground:EPriorityLess);
|
|
|
619 |
iLowPriority = aLowPriority;
|
|
|
620 |
}
|
|
|
621 |
}
|
|
|
622 |
else
|
|
|
623 |
{
|
|
|
624 |
// there's more than one request in the queue, so rather than go throught the entire queue
|
|
|
625 |
// to determine what the thread's priority should be, assume that it should be "high"
|
|
|
626 |
if (iLowPriority)
|
|
|
627 |
{
|
|
|
628 |
iThread.SetPriority(EPriorityLess);
|
|
|
629 |
iLowPriority = EFalse;
|
|
|
630 |
}
|
|
|
631 |
}
|
|
|
632 |
|
|
|
633 |
if(iIsWaiting)
|
|
|
634 |
{
|
|
|
635 |
// the request thread must be waiting on the iWaitLock
|
|
|
636 |
iIsWaiting=EFalse;
|
|
|
637 |
iListLock.Signal();
|
|
|
638 |
iRequest=aRequest;
|
|
|
639 |
|
|
|
640 |
iThread.RequestSignal();
|
|
|
641 |
}
|
|
|
642 |
else
|
|
|
643 |
{
|
|
|
644 |
if(aIsFront)
|
|
|
645 |
iList.AddFirst(*aRequest);
|
|
|
646 |
else
|
|
|
647 |
iList.AddLast(*aRequest);
|
|
|
648 |
iListLock.Signal();
|
|
|
649 |
}
|
|
|
650 |
|
|
|
651 |
|
|
|
652 |
}
|
|
|
653 |
|
|
|
654 |
void CRequestThread::DeliverFront(CFsRequest* aRequest)
|
|
|
655 |
//
|
|
|
656 |
//
|
|
|
657 |
//
|
|
|
658 |
{
|
|
|
659 |
Deliver(aRequest,ETrue);
|
|
|
660 |
}
|
|
|
661 |
|
|
|
662 |
void CRequestThread::DeliverBack(CFsRequest* aRequest, TBool aLowPriority)
|
|
|
663 |
//
|
|
|
664 |
//
|
|
|
665 |
//
|
|
|
666 |
{
|
|
|
667 |
Deliver(aRequest,EFalse,aLowPriority);
|
|
|
668 |
}
|
|
|
669 |
|
|
|
670 |
|
|
|
671 |
|
|
|
672 |
CFsDeltaTimer* CRequestThread::Timer()
|
|
|
673 |
{
|
|
|
674 |
__ASSERT_ALWAYS(iTimer,Fault(ERequestThreadNotInitialised));
|
|
|
675 |
return iTimer;
|
|
|
676 |
}
|
|
|
677 |
|
|
|
678 |
|
|
|
679 |
CDriveThread::CDriveThread()
|
|
|
680 |
: iFinaliseTimer(FinaliseTimerEvent, this)
|
|
|
681 |
{
|
|
|
682 |
}
|
|
|
683 |
|
|
|
684 |
CDriveThread* CDriveThread::NewL()
|
|
|
685 |
//
|
|
|
686 |
//
|
|
|
687 |
//
|
|
|
688 |
{
|
|
|
689 |
__PRINT(_L("CDriveThread::NewL()"));
|
|
|
690 |
CDriveThread* pT=new(ELeave) CDriveThread;
|
|
|
691 |
TInt r=pT->Initialise();
|
|
|
692 |
if(r!=KErrNone)
|
|
|
693 |
{
|
|
|
694 |
delete(pT);
|
|
|
695 |
User::Leave(r);
|
|
|
696 |
}
|
|
|
697 |
return(pT);
|
|
|
698 |
}
|
|
|
699 |
|
|
|
700 |
TUint CDriveThread::StartL(TInt aDrvNumber)
|
|
|
701 |
//
|
|
|
702 |
//
|
|
|
703 |
//
|
|
|
704 |
{
|
|
|
705 |
__PRINT1(_L("CDriveThread::StartL() on drive %d"),aDrvNumber);
|
|
|
706 |
iDriveNumber=aDrvNumber;
|
|
|
707 |
RThread t;
|
|
|
708 |
User::LeaveIfError(DoStart(t));
|
|
|
709 |
TUint id=t.Id();
|
|
|
710 |
return(id);
|
|
|
711 |
}
|
|
|
712 |
|
|
|
713 |
TInt CDriveThread::DoThreadInitialise()
|
|
|
714 |
//
|
|
|
715 |
// Initialise function for the drive thread
|
|
|
716 |
// - Renames the thread to contain the drive number.
|
|
|
717 |
// - Note: Drive mappings are not available at this time, so we can't show the actual drive letter.
|
|
|
718 |
//
|
|
|
719 |
{
|
|
|
720 |
__PRINT1(_L("CDriveThread::DoThreadInitialise() on drive %d"), iDriveNumber);
|
|
|
721 |
|
|
|
722 |
TBuf<16> name;
|
|
|
723 |
name.Format(_L("DriveThread_%02d"), iDriveNumber);
|
|
|
724 |
return(RThread::RenameMe(name));
|
|
|
725 |
}
|
|
|
726 |
|
|
|
727 |
void CDriveThread::CompleteSessionRequests(CSessionFs* aSession, TInt aValue)
|
|
|
728 |
//
|
|
|
729 |
//
|
|
|
730 |
//
|
|
|
731 |
{
|
|
|
732 |
__THRD_PRINT1(_L("CDriveThread::CompleteSessionReqeusts() drive=%d"),iDriveNumber);
|
|
|
733 |
iListLock.Wait();
|
|
|
734 |
TDblQueIter<CFsRequest> q(iList);
|
|
|
735 |
CFsRequest* pR;
|
|
|
736 |
while((pR=q++)!=NULL)
|
|
|
737 |
{
|
|
|
738 |
if(pR->Session()==aSession)
|
|
|
739 |
{
|
|
|
740 |
pR->iLink.Deque();
|
|
|
741 |
iListLock.Signal();
|
|
|
742 |
pR->Complete(aValue);
|
|
|
743 |
iListLock.Wait();
|
|
|
744 |
// set iterator back to head of queue in case Complete() has itself removed requests from the queue
|
|
|
745 |
q.SetToFirst();
|
|
|
746 |
}
|
|
|
747 |
}
|
|
|
748 |
iListLock.Signal();
|
|
|
749 |
__THRD_PRINT(_L("session requests completed"));
|
|
|
750 |
}
|
|
|
751 |
|
|
|
752 |
|
|
|
753 |
void CDriveThread::CompleteReadWriteRequests()
|
|
|
754 |
{
|
|
|
755 |
__THRD_PRINT1(_L("CDriveThread::CompleteReadWriteRequests() drive=%d"),iDriveNumber);
|
|
|
756 |
|
|
|
757 |
iListLock.Wait();
|
|
|
758 |
|
|
|
759 |
TDblQueIter<CFsRequest> q(iList);
|
|
|
760 |
CFsRequest* pR;
|
|
|
761 |
while((pR=q++)!=NULL)
|
|
|
762 |
{
|
|
|
763 |
TInt func = pR->Operation()->Function();
|
|
|
764 |
if (func == EFsFileRead || func == EFsFileWrite || func == EFsFileWriteDirty)
|
|
|
765 |
{
|
|
|
766 |
pR->iLink.Deque();
|
|
|
767 |
pR->Complete(KErrNotReady);
|
|
|
768 |
}
|
|
|
769 |
}
|
|
|
770 |
iListLock.Signal();
|
|
|
771 |
|
|
|
772 |
__THRD_PRINT(_L("file read/write requests completed"));
|
|
|
773 |
}
|
|
|
774 |
|
|
|
775 |
/*
|
|
|
776 |
This function is called by FsThreadManager::SetDriveHung() and attempts to purge the request queue
|
|
|
777 |
of all requests which MIGHT belong to the critical notifier server (or to the loader) to avoid causing
|
|
|
778 |
a deadlock when calling the server.
|
|
|
779 |
|
|
|
780 |
All requests are completed with KErrNotReady apart from :
|
|
|
781 |
- EFsFileWriteDirty requests, to avoid losing dirty data
|
|
|
782 |
- KDispatchObjectClose requests as they are raised by the file server only and therefore cannot belong to the critical notifier server
|
|
|
783 |
- EFsFileSubClose requests, to avoid closing files containing dirty data. These requests have their message completed
|
|
|
784 |
so that clients are unblocked, but the request itself is not processed until later. (If the request WAS processed
|
|
|
785 |
and completed, then this might result in the CFileCB and CMountCB object being deleted, leading to problems
|
|
|
786 |
dereferencing invalid pointers).
|
|
|
787 |
*/
|
|
|
788 |
void CDriveThread::CompleteClientRequests(TInt aValue)
|
|
|
789 |
{
|
|
|
790 |
__THRD_PRINT1(_L("CDriveThread::CompleteClientRequests() drive=%d"),iDriveNumber);
|
|
|
791 |
|
|
|
792 |
iListLock.Wait();
|
|
|
793 |
|
|
|
794 |
TDblQueIter<CFsRequest> q(iList);
|
|
|
795 |
CFsRequest* pR;
|
|
|
796 |
while((pR=q++)!=NULL)
|
|
|
797 |
{
|
|
|
798 |
TInt func = pR->Operation()->Function();
|
|
|
799 |
if(func == EFsFileSubClose)
|
|
|
800 |
{
|
|
|
801 |
TInt msgHandle = pR->Message().Handle();
|
|
|
802 |
if ((msgHandle != KLocalMessageHandle) && (msgHandle != 0))
|
|
|
803 |
pR->Message().Complete(KErrNone);
|
|
|
804 |
}
|
|
|
805 |
else if (func != EFsFileWriteDirty && func != KDispatchObjectClose)
|
|
|
806 |
{
|
|
|
807 |
pR->iLink.Deque();
|
|
|
808 |
iListLock.Signal();
|
|
|
809 |
pR->Complete(aValue);
|
|
|
810 |
iListLock.Wait();
|
|
|
811 |
}
|
|
|
812 |
}
|
|
|
813 |
iListLock.Signal();
|
|
|
814 |
|
|
|
815 |
__THRD_PRINT(_L("client read requests completed"));
|
|
|
816 |
}
|
|
|
817 |
|
|
|
818 |
TBool CDriveThread::IsRequestWriteable()
|
|
|
819 |
//
|
|
|
820 |
// return if current request may cause write to disk
|
|
|
821 |
// must be called from drive thread
|
|
|
822 |
//
|
|
|
823 |
{
|
|
|
824 |
__ASSERT_ALWAYS(FsThreadManager::IsDriveThread(iDriveNumber,EFalse),Fault(EDriveThreadWriteable));
|
|
|
825 |
return(iRequest->Operation()->IsWrite());
|
|
|
826 |
}
|
|
|
827 |
|
|
|
828 |
TBool CDriveThread::IsSessionNotifyUser()
|
|
|
829 |
//
|
|
|
830 |
// return if request's session has notify user set
|
|
|
831 |
// must be called from drive thread and request have a session set
|
|
|
832 |
//
|
|
|
833 |
{
|
|
|
834 |
__ASSERT_ALWAYS(FsThreadManager::IsDriveThread(iDriveNumber,EFalse),Fault(EDriveThreadNotifyUser1));
|
|
|
835 |
// NB For read-ahead or a flush-dirty write request generated by the file cache, the session will be NULL:
|
|
|
836 |
// in this case assume that notify user is set (as it's the safest option)
|
|
|
837 |
CSessionFs* session = iRequest->Session();
|
|
|
838 |
return session ? session->GetNotifyUser() : ETrue;
|
|
|
839 |
}
|
|
|
840 |
|
|
|
841 |
void CDriveThread::StartFinalisationTimer()
|
|
|
842 |
{
|
|
|
843 |
if(IsProxyDrive(iDriveNumber))
|
|
|
844 |
iFinaliseTimer.Start(this, KFinaliseTimerPeriod);
|
|
|
845 |
}
|
|
|
846 |
|
|
|
847 |
|
|
|
848 |
void CDriveThread::StopFinalisationTimer()
|
|
|
849 |
{
|
|
|
850 |
iFinaliseTimer.Stop();
|
|
|
851 |
}
|
|
|
852 |
|
|
|
853 |
TInt CDriveThread::FinaliseTimerEvent(TAny* aSelfP)
|
|
|
854 |
{
|
|
|
855 |
CDriveThread& self = *(CDriveThread*)aSelfP;
|
|
|
856 |
|
|
|
857 |
TDrive& drive = TheDrives[self.iDriveNumber];
|
|
|
858 |
if(drive.IsMounted() && drive.CurrentMount().LockStatus() == 0)
|
|
|
859 |
{
|
|
|
860 |
// Ignore the error here, as there's nothing we can do about it...
|
|
|
861 |
(void)drive.FinaliseMount(RFs::EFinal_RW);
|
|
|
862 |
}
|
|
|
863 |
|
|
|
864 |
return KErrNone;
|
|
|
865 |
}
|
|
|
866 |
|
|
|
867 |
|
|
|
868 |
CDisconnectThread::~CDisconnectThread()
|
|
|
869 |
//
|
|
|
870 |
//
|
|
|
871 |
//
|
|
|
872 |
{
|
|
|
873 |
if(iRequest)
|
|
|
874 |
delete(iRequest);
|
|
|
875 |
}
|
|
|
876 |
|
|
|
877 |
|
|
|
878 |
CDisconnectThread* CDisconnectThread::NewL()
|
|
|
879 |
//
|
|
|
880 |
//
|
|
|
881 |
//
|
|
|
882 |
{
|
|
|
883 |
__THRD_PRINT(_L("CDisconnectThread::NewL()"));
|
|
|
884 |
CDisconnectThread* pT=new(ELeave) CDisconnectThread;
|
|
|
885 |
TInt r=pT->Initialise();
|
|
|
886 |
if(r!=KErrNone)
|
|
|
887 |
{
|
|
|
888 |
delete(pT);
|
|
|
889 |
User::Leave(r);
|
|
|
890 |
}
|
|
|
891 |
return(pT);
|
|
|
892 |
}
|
|
|
893 |
|
|
|
894 |
TUint CDisconnectThread::StartL()
|
|
|
895 |
//
|
|
|
896 |
//
|
|
|
897 |
//
|
|
|
898 |
{
|
|
|
899 |
__PRINT(_L("CDisconnectThread::StartL()"));
|
|
|
900 |
iRequest = new(ELeave) CFsInternalRequest;
|
|
|
901 |
__THRD_PRINT1(_L("internal request = 0x%x"),iRequest);
|
|
|
902 |
iRequest->Set(CancelSessionOp,NULL);
|
|
|
903 |
|
|
|
904 |
RThread t;
|
|
|
905 |
TInt r=DoStart(t);
|
|
|
906 |
if(r!=KErrNone)
|
|
|
907 |
{
|
|
|
908 |
delete(iRequest);
|
|
|
909 |
iRequest=NULL;
|
|
|
910 |
User::Leave(r);
|
|
|
911 |
}
|
|
|
912 |
iRequest->SetThreadHandle(t.Handle());
|
|
|
913 |
__THRD_PRINT1(_L("CDisconnect::StartL() handle=%d"),t.Handle());
|
|
|
914 |
iRequest->SetAllocated();
|
|
|
915 |
TUint id=t.Id();
|
|
|
916 |
return(id);
|
|
|
917 |
}
|
|
|
918 |
|
|
|
919 |
|
|
|
920 |
CPluginThread::CPluginThread(CFsPlugin& aPlugin)
|
|
|
921 |
: iPlugin(aPlugin)
|
|
|
922 |
{
|
|
|
923 |
/** @prototype */
|
|
|
924 |
iOperationLock.Close();
|
|
|
925 |
}
|
|
|
926 |
|
|
|
927 |
|
|
|
928 |
CPluginThread* CPluginThread::NewL(CFsPlugin& aPlugin)
|
|
|
929 |
{
|
|
|
930 |
__PRINT(_L("CPluginThread::NewL()"));
|
|
|
931 |
CPluginThread* pT=new(ELeave) CPluginThread(aPlugin);
|
|
|
932 |
TInt r=pT->Initialise();
|
|
|
933 |
|
|
|
934 |
/** @prototype */
|
|
|
935 |
if(r == KErrNone)
|
|
|
936 |
r=pT->iOperationLock.CreateLocal(0);
|
|
|
937 |
|
|
|
938 |
if(r!=KErrNone)
|
|
|
939 |
{
|
|
|
940 |
delete(pT);
|
|
|
941 |
User::Leave(r);
|
|
|
942 |
}
|
|
|
943 |
return(pT);
|
|
|
944 |
}
|
|
|
945 |
|
|
|
946 |
TUint CPluginThread::StartL()
|
|
|
947 |
{
|
|
|
948 |
__PRINT(_L("CPluginThread::StartL()"));
|
|
|
949 |
RThread t;
|
|
|
950 |
User::LeaveIfError(DoStart(t));
|
|
|
951 |
TUint id=t.Id();
|
|
|
952 |
return(id);
|
|
|
953 |
}
|
|
|
954 |
|
|
|
955 |
void CPluginThread::CompleteSessionRequests(CSessionFs* aSession, TInt aValue)
|
|
|
956 |
{
|
|
|
957 |
__THRD_PRINT(_L("CPluginThread::CompleteSessionReqeusts()"));
|
|
|
958 |
iListLock.Wait();
|
|
|
959 |
TDblQueIter<CFsRequest> q(iList);
|
|
|
960 |
CFsRequest* pR;
|
|
|
961 |
while((pR=q++)!=NULL)
|
|
|
962 |
{
|
|
|
963 |
if(pR->Session()==aSession)
|
|
|
964 |
{
|
|
|
965 |
pR->iLink.Deque();
|
|
|
966 |
pR->Complete(aValue);
|
|
|
967 |
}
|
|
|
968 |
}
|
|
|
969 |
iListLock.Signal();
|
|
|
970 |
__THRD_PRINT(_L("session requests completed"));
|
|
|
971 |
}
|
|
|
972 |
|
|
|
973 |
TInt CPluginThread::DoThreadInitialise()
|
|
|
974 |
{
|
|
|
975 |
__PRINT(_L("CPluginThread::DoThreadInitialise()"));
|
|
|
976 |
TRAPD(err, iPlugin.InitialiseL());
|
|
|
977 |
|
|
|
978 |
return err;
|
|
|
979 |
}
|
|
|
980 |
|
|
|
981 |
/** @prototype */
|
|
|
982 |
void CPluginThread::OperationLockWait()
|
|
|
983 |
{
|
|
|
984 |
iOperationLock.Wait();
|
|
|
985 |
}
|
|
|
986 |
|
|
|
987 |
/** @prototype */
|
|
|
988 |
void CPluginThread::OperationLockSignal()
|
|
|
989 |
{
|
|
|
990 |
iOperationLock.Signal();
|
|
|
991 |
}
|
|
|
992 |
|
|
|
993 |
// Class TTickCountQue
|
|
|
994 |
/**
|
|
|
995 |
@internalComponent
|
|
|
996 |
@released
|
|
|
997 |
|
|
|
998 |
Constructs an empty list header
|
|
|
999 |
*/
|
|
|
1000 |
TTickCountQue::TTickCountQue()
|
|
|
1001 |
{}
|
|
|
1002 |
|
|
|
1003 |
|
|
|
1004 |
|
|
|
1005 |
|
|
|
1006 |
/**
|
|
|
1007 |
@internalComponent
|
|
|
1008 |
@released
|
|
|
1009 |
|
|
|
1010 |
Adds the specified list element.
|
|
|
1011 |
|
|
|
1012 |
The element is added into the list in order of its tick count.
|
|
|
1013 |
|
|
|
1014 |
@param aRef The list element to be inserted.
|
|
|
1015 |
*/
|
|
|
1016 |
void TTickCountQue::Add(TTickCountQueLink& aRef)
|
|
|
1017 |
{
|
|
|
1018 |
TTickCountQueLink* currentLink = (TTickCountQueLink*)(iHead.iNext);
|
|
|
1019 |
TTickCountQueLink* addLink = &aRef;
|
|
|
1020 |
|
|
|
1021 |
while ( (currentLink != (TTickCountQueLink*)&iHead) &&
|
|
|
1022 |
(((TInt)(addLink->iTickCount - currentLink->iTickCount)) >= 0)
|
|
|
1023 |
)
|
|
|
1024 |
{
|
|
|
1025 |
currentLink = (TTickCountQueLink*)currentLink->iNext;
|
|
|
1026 |
}
|
|
|
1027 |
|
|
|
1028 |
addLink->Enque(currentLink->iPrev);
|
|
|
1029 |
}
|
|
|
1030 |
|
|
|
1031 |
|
|
|
1032 |
|
|
|
1033 |
|
|
|
1034 |
/**
|
|
|
1035 |
@internalComponent
|
|
|
1036 |
@released
|
|
|
1037 |
|
|
|
1038 |
Removes the first list element from the linked list if its tick count
|
|
|
1039 |
is prior to the current tick count.
|
|
|
1040 |
|
|
|
1041 |
@param aTickCount The current tick count.
|
|
|
1042 |
|
|
|
1043 |
@return A pointer to the element removed from the linked list. This is NULL
|
|
|
1044 |
if the first element has yet to expire or the queue is empty.
|
|
|
1045 |
*/
|
|
|
1046 |
TTickCountQueLink* TTickCountQue::RemoveFirst(TUint aTickCount)
|
|
|
1047 |
{
|
|
|
1048 |
TTickCountQueLink* firstLink = (TTickCountQueLink*)iHead.iNext;
|
|
|
1049 |
|
|
|
1050 |
if (((TInt)(firstLink->iTickCount - aTickCount)) <= 0)
|
|
|
1051 |
{
|
|
|
1052 |
return RemoveFirst();
|
|
|
1053 |
}
|
|
|
1054 |
else
|
|
|
1055 |
{
|
|
|
1056 |
return NULL;
|
|
|
1057 |
}
|
|
|
1058 |
}
|
|
|
1059 |
|
|
|
1060 |
|
|
|
1061 |
/**
|
|
|
1062 |
@internalComponent
|
|
|
1063 |
@released
|
|
|
1064 |
|
|
|
1065 |
Removes the first list element from the linked list, if any.
|
|
|
1066 |
|
|
|
1067 |
@return A pointer to the element removed from the linked list. This is NULL,
|
|
|
1068 |
if the queue is empty.
|
|
|
1069 |
*/
|
|
|
1070 |
TTickCountQueLink* TTickCountQue::RemoveFirst()
|
|
|
1071 |
{
|
|
|
1072 |
TTickCountQueLink* firstLink = (TTickCountQueLink*)iHead.iNext;
|
|
|
1073 |
|
|
|
1074 |
if (firstLink != (TTickCountQueLink*)&iHead)
|
|
|
1075 |
{
|
|
|
1076 |
firstLink->Deque();
|
|
|
1077 |
return firstLink;
|
|
|
1078 |
}
|
|
|
1079 |
|
|
|
1080 |
return NULL;
|
|
|
1081 |
}
|
|
|
1082 |
|
|
|
1083 |
|
|
|
1084 |
|
|
|
1085 |
|
|
|
1086 |
/**
|
|
|
1087 |
@internalComponent
|
|
|
1088 |
@released
|
|
|
1089 |
|
|
|
1090 |
Gets a pointer to the first list element in the doubly linked list.
|
|
|
1091 |
|
|
|
1092 |
@return A pointer to the first list element in the doubly linked list. If
|
|
|
1093 |
the list is empty, this pointer is not necessarily NULL and must not
|
|
|
1094 |
be assumed to point to a valid object.
|
|
|
1095 |
*/
|
|
|
1096 |
TTickCountQueLink* TTickCountQue::First() const
|
|
|
1097 |
{
|
|
|
1098 |
#if defined (_DEBUG)
|
|
|
1099 |
__DbgTestEmpty();
|
|
|
1100 |
#endif
|
|
|
1101 |
return((TTickCountQueLink*)iHead.iNext);
|
|
|
1102 |
}
|
|
|
1103 |
|
|
|
1104 |
|
|
|
1105 |
|
|
|
1106 |
|
|
|
1107 |
|
|
|
1108 |
CFsDeltaTimer* CFsDeltaTimer::New(CRequestThread& aRequestThread, TInt aPriority)
|
|
|
1109 |
{
|
|
|
1110 |
TTimeIntervalMicroSeconds32 tickPeriod;
|
|
|
1111 |
UserHal::TickPeriod(tickPeriod);
|
|
|
1112 |
|
|
|
1113 |
CFsDeltaTimer* timer = new CFsDeltaTimer(aRequestThread, aPriority, tickPeriod.Int());
|
|
|
1114 |
if (timer == NULL)
|
|
|
1115 |
return NULL;
|
|
|
1116 |
|
|
|
1117 |
if (timer->iTimer.CreateLocal() != KErrNone ||
|
|
|
1118 |
timer->iLock.CreateLocal() != KErrNone)
|
|
|
1119 |
{
|
|
|
1120 |
delete timer;
|
|
|
1121 |
return NULL;
|
|
|
1122 |
}
|
|
|
1123 |
|
|
|
1124 |
return timer;
|
|
|
1125 |
}
|
|
|
1126 |
|
|
|
1127 |
CFsDeltaTimer::CFsDeltaTimer(CRequestThread& aRequestThread, TInt /*aPriority*/, TInt aTickPeriod) :
|
|
|
1128 |
iRequestThread(aRequestThread), iTickPeriod(aTickPeriod)
|
|
|
1129 |
{
|
|
|
1130 |
iThreadId = RThread().Id();
|
|
|
1131 |
}
|
|
|
1132 |
|
|
|
1133 |
/**
|
|
|
1134 |
Destructor.
|
|
|
1135 |
|
|
|
1136 |
Frees all resources before destruction of the object. Specifically, it cancels
|
|
|
1137 |
any outstanding timer requests generated by the RTimer object and then deletes
|
|
|
1138 |
all timed event entries from the timed event queue.
|
|
|
1139 |
|
|
|
1140 |
@see RTimer
|
|
|
1141 |
|
|
|
1142 |
@publishedAll
|
|
|
1143 |
@released
|
|
|
1144 |
*/
|
|
|
1145 |
CFsDeltaTimer::~CFsDeltaTimer()
|
|
|
1146 |
{
|
|
|
1147 |
Cancel();
|
|
|
1148 |
|
|
|
1149 |
while (!iQueue.IsEmpty())
|
|
|
1150 |
{
|
|
|
1151 |
iQueue.First()->Deque();
|
|
|
1152 |
}
|
|
|
1153 |
|
|
|
1154 |
iLock.Close();
|
|
|
1155 |
iTimer.Close();
|
|
|
1156 |
}
|
|
|
1157 |
|
|
|
1158 |
|
|
|
1159 |
/**
|
|
|
1160 |
Start the timer.
|
|
|
1161 |
|
|
|
1162 |
@see RTimer
|
|
|
1163 |
|
|
|
1164 |
@publishedAll
|
|
|
1165 |
@released
|
|
|
1166 |
*/
|
|
|
1167 |
void CFsDeltaTimer::Start(TThreadTimer& aEntry, TTimeIntervalMicroSeconds32 aTime)
|
|
|
1168 |
{
|
|
|
1169 |
iLock.Wait();
|
|
|
1170 |
|
|
|
1171 |
// must be already running on this thread or not running at all
|
|
|
1172 |
ASSERT(aEntry.iRequestThread == NULL || aEntry.iRequestThread == &iRequestThread);
|
|
|
1173 |
|
|
|
1174 |
// attach the entry to this thread
|
|
|
1175 |
aEntry.iRequestThread = &iRequestThread;
|
|
|
1176 |
|
|
|
1177 |
// Remove the entry from the list (if it's already queued)
|
|
|
1178 |
// and then add it again in the correct order
|
|
|
1179 |
aEntry.iLink.Deque();
|
|
|
1180 |
QueueLong(TTimeIntervalMicroSeconds(MAKE_TINT64(0, aTime.Int())), aEntry);
|
|
|
1181 |
|
|
|
1182 |
iLock.Signal();
|
|
|
1183 |
}
|
|
|
1184 |
|
|
|
1185 |
void CFsDeltaTimer::Stop(TThreadTimer& aEntry)
|
|
|
1186 |
{
|
|
|
1187 |
iLock.Wait();
|
|
|
1188 |
|
|
|
1189 |
aEntry.iLink.Deque();
|
|
|
1190 |
aEntry.iRequestThread = NULL;
|
|
|
1191 |
|
|
|
1192 |
iLock.Signal();
|
|
|
1193 |
}
|
|
|
1194 |
|
|
|
1195 |
|
|
|
1196 |
TInt CFsDeltaTimer::QueueLong(TTimeIntervalMicroSeconds aTimeInMicroSeconds, TThreadTimer& aEntry)
|
|
|
1197 |
{
|
|
|
1198 |
const TInt64 timeInTicks = (aTimeInMicroSeconds.Int64() + iTickPeriod - 1) / iTickPeriod;
|
|
|
1199 |
|
|
|
1200 |
TInt timeInTicks32 = I64LOW(timeInTicks);
|
|
|
1201 |
|
|
|
1202 |
// We are using deltas on tick values, hence using maximum signed number of ticks
|
|
|
1203 |
if (I64HIGH(timeInTicks) || (timeInTicks32 < 0))
|
|
|
1204 |
{
|
|
|
1205 |
return KErrOverflow;
|
|
|
1206 |
}
|
|
|
1207 |
|
|
|
1208 |
// Make sure we queue for at least one tick
|
|
|
1209 |
if (timeInTicks32 == 0)
|
|
|
1210 |
{
|
|
|
1211 |
timeInTicks32 = 1;
|
|
|
1212 |
}
|
|
|
1213 |
|
|
|
1214 |
// Calculate tick count for new entry
|
|
|
1215 |
aEntry.iLink.iTickCount = User::TickCount() + timeInTicks32;
|
|
|
1216 |
|
|
|
1217 |
// Add this entry at the right spot
|
|
|
1218 |
iQueue.Add(aEntry.iLink);
|
|
|
1219 |
|
|
|
1220 |
// we only need to re-start the timer if we've added an entry to the head of the queue
|
|
|
1221 |
// or the timer is not already running
|
|
|
1222 |
if (&aEntry.iLink == iQueue.First() || iStatus == KRequestPending)
|
|
|
1223 |
Activate();
|
|
|
1224 |
|
|
|
1225 |
return KErrNone;
|
|
|
1226 |
}
|
|
|
1227 |
|
|
|
1228 |
void CFsDeltaTimer::Activate()
|
|
|
1229 |
//
|
|
|
1230 |
// Queue a request on the timer.
|
|
|
1231 |
//
|
|
|
1232 |
{
|
|
|
1233 |
if (RThread().Id() != iThreadId)
|
|
|
1234 |
{
|
|
|
1235 |
iRestartNeeded = ETrue;
|
|
|
1236 |
iRequestThread.iThread.RequestSignal();
|
|
|
1237 |
return;
|
|
|
1238 |
}
|
|
|
1239 |
|
|
|
1240 |
if (iStatus == KRequestPending)
|
|
|
1241 |
Cancel();
|
|
|
1242 |
|
|
|
1243 |
if (!iQueue.IsEmpty() && !iQueueBusy)
|
|
|
1244 |
{
|
|
|
1245 |
const TInt ticksToWait = iQueue.First()->iTickCount - User::TickCount();
|
|
|
1246 |
|
|
|
1247 |
if (ticksToWait > 0)
|
|
|
1248 |
{
|
|
|
1249 |
iTimer.AfterTicks(iStatus, ticksToWait);
|
|
|
1250 |
}
|
|
|
1251 |
else
|
|
|
1252 |
{
|
|
|
1253 |
TRequestStatus* status = &iStatus;
|
|
|
1254 |
User::RequestComplete(status, KErrNone);
|
|
|
1255 |
}
|
|
|
1256 |
}
|
|
|
1257 |
}
|
|
|
1258 |
|
|
|
1259 |
|
|
|
1260 |
|
|
|
1261 |
void CFsDeltaTimer::RunL()
|
|
|
1262 |
//
|
|
|
1263 |
// Call all zero delta callbacks
|
|
|
1264 |
{
|
|
|
1265 |
// if still running and no restart needed, then there's nothing to do
|
|
|
1266 |
if (iStatus == KRequestPending && !iRestartNeeded)
|
|
|
1267 |
return;
|
|
|
1268 |
|
|
|
1269 |
|
|
|
1270 |
iLock.Wait();
|
|
|
1271 |
|
|
|
1272 |
// Queue busy
|
|
|
1273 |
iQueueBusy = ETrue;
|
|
|
1274 |
|
|
|
1275 |
// Whilst the list of expired timers is being processed, time will pass and
|
|
|
1276 |
// the tick count may have increased such that there are now more expired
|
|
|
1277 |
// timers. Loop until we have either emptied the queue or can wait for a
|
|
|
1278 |
// timer exipration in the future.
|
|
|
1279 |
if (iStatus == KErrNone)
|
|
|
1280 |
{
|
|
|
1281 |
iStatus = KErrNotReady;
|
|
|
1282 |
while (!iQueue.IsEmpty())
|
|
|
1283 |
{
|
|
|
1284 |
// Calculate how long till first timer expires
|
|
|
1285 |
const TUint tickCount = User::TickCount();
|
|
|
1286 |
|
|
|
1287 |
// If the first timer is yet to expire, wait some more
|
|
|
1288 |
if (((TInt)(iQueue.First()->iTickCount - tickCount)) > 0)
|
|
|
1289 |
{
|
|
|
1290 |
break;
|
|
|
1291 |
}
|
|
|
1292 |
|
|
|
1293 |
// Remove entry before callback to prevent re-entrancy issues
|
|
|
1294 |
TTickCountQueLink* entry = iQueue.RemoveFirst();
|
|
|
1295 |
|
|
|
1296 |
// Iterate through the timers we know have expired based on the
|
|
|
1297 |
// last calculation of delta
|
|
|
1298 |
while (entry)
|
|
|
1299 |
{
|
|
|
1300 |
TThreadTimer* threadTimer = reinterpret_cast<TThreadTimer*>(PtrSub(entry, _FOFF(TThreadTimer, iLink)));
|
|
|
1301 |
threadTimer->iRequestThread = NULL; // indicate timer not running
|
|
|
1302 |
|
|
|
1303 |
// Make callback. This could go reentrant on Queue[Long]() or Remove().
|
|
|
1304 |
iLock.Signal();
|
|
|
1305 |
threadTimer->iCallBack.CallBack();
|
|
|
1306 |
iLock.Wait();
|
|
|
1307 |
|
|
|
1308 |
// Remove the next expired entry, if any
|
|
|
1309 |
entry = iQueue.RemoveFirst(tickCount);
|
|
|
1310 |
}
|
|
|
1311 |
}
|
|
|
1312 |
}
|
|
|
1313 |
|
|
|
1314 |
// Queue idle
|
|
|
1315 |
iQueueBusy = EFalse;
|
|
|
1316 |
|
|
|
1317 |
|
|
|
1318 |
// Requeue timer if queue isn't empty
|
|
|
1319 |
Activate();
|
|
|
1320 |
|
|
|
1321 |
iRestartNeeded = EFalse;
|
|
|
1322 |
|
|
|
1323 |
iLock.Signal();
|
|
|
1324 |
}
|
|
|
1325 |
|
|
|
1326 |
void CFsDeltaTimer::Cancel()
|
|
|
1327 |
{
|
|
|
1328 |
if (iStatus == KRequestPending)
|
|
|
1329 |
{
|
|
|
1330 |
iTimer.Cancel();
|
|
|
1331 |
User::WaitForRequest(iStatus);
|
|
|
1332 |
}
|
|
|
1333 |
}
|
|
|
1334 |
|
|
|
1335 |
|
|
|
1336 |
|
|
|
1337 |
TThreadTimer::TThreadTimer(TInt (*aCallBackFunction)(TAny*),TAny* aPtr) :
|
|
|
1338 |
iCallBack(aCallBackFunction, aPtr),
|
|
|
1339 |
iRequestThread(NULL)
|
|
|
1340 |
{
|
|
|
1341 |
};
|
|
|
1342 |
|
|
|
1343 |
|
|
|
1344 |
void TThreadTimer::Start(CRequestThread* aRequestThread, TTimeIntervalMicroSeconds32 aTime)
|
|
|
1345 |
{
|
|
|
1346 |
ASSERT(aRequestThread);
|
|
|
1347 |
|
|
|
1348 |
// NB: There are no locks here, so we have to be aware that CFsDeltaTimer::RunL()
|
|
|
1349 |
// may be running in another thread and set iRequestThread to NULL
|
|
|
1350 |
CRequestThread* requestThread = iRequestThread;
|
|
|
1351 |
if (!requestThread) // if not already running, use caller's request thread
|
|
|
1352 |
requestThread = aRequestThread;
|
|
|
1353 |
|
|
|
1354 |
|
|
|
1355 |
__ASSERT_DEBUG(requestThread->Timer(),Fault(ERequestThreadNotInitialised));
|
|
|
1356 |
requestThread->Timer()->Start(*this, aTime);
|
|
|
1357 |
}
|
|
|
1358 |
|
|
|
1359 |
|
|
|
1360 |
void TThreadTimer::Stop()
|
|
|
1361 |
{
|
|
|
1362 |
// NB: There are no locks here, so we have to be aware that CFsDeltaTimer::RunL()
|
|
|
1363 |
// may be running in another thread and set iRequestThread to NULL
|
|
|
1364 |
CRequestThread* requestThread = iRequestThread;
|
|
|
1365 |
if (requestThread)
|
|
|
1366 |
requestThread->Timer()->Stop(*this);
|
|
|
1367 |
}
|
|
|
1368 |
|
|
|
1369 |
|