sl@0: // Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Graphics Resource - kernel extension implementation
sl@0: //
sl@0: 
sl@0: #include <kernel/kern_priv.h>
sl@0: #include "sgextensionimpl.h"
sl@0: 
sl@0: DSgExtensionImpl* TheSgExtensionImpl = NULL;
sl@0: 
sl@0: DECLARE_STANDARD_EXTENSION()
sl@0: 	{
sl@0: 	__KTRACE_OPT(KBOOT, Kern::Printf("Starting Graphics Extension"));
sl@0: 	TInt err;
sl@0: 	TheSgExtensionImpl = new DSgExtensionImpl;
sl@0: 	if (TheSgExtensionImpl)
sl@0: 		{
sl@0: 		err = TheSgExtensionImpl->Construct();
sl@0: 		if (err != KErrNone)
sl@0: 			{
sl@0: 			delete TheSgExtensionImpl;
sl@0: 			TheSgExtensionImpl = NULL;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		err = KErrNoMemory;
sl@0: 		}
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		__KTRACE_OPT(KBOOT, Kern::Printf("Error: Graphics Extension failed to start"));
sl@0: 		}
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TVersion SgExtension::Version()
sl@0: 	{
sl@0: 	return TVersion(1, 1, 1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt SgExtension::CreateResource(TUint32 aAttribs, const TDesC8& aMetaData, TInt aDataSize, DSgResource*& aResource)
sl@0: 	{
sl@0: 	if (!TheSgExtensionImpl)
sl@0: 		{
sl@0: 		__KTRACE_OPT(KPANIC, Kern::Printf("Error: Graphics Extension not ready"));
sl@0: 		return KErrNotReady;
sl@0: 		}
sl@0: 	return TheSgExtensionImpl->CreateResource(aAttribs, aMetaData, aDataSize, aResource);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt SgExtension::FindAndOpenResource(TUint64 aId, DSgResource*& aResource)
sl@0: 	{
sl@0: 	if (!TheSgExtensionImpl)
sl@0: 		{
sl@0: 		__KTRACE_OPT(KPANIC, Kern::Printf("Error: Graphics Extension not ready"));
sl@0: 		return KErrNotReady;
sl@0: 		}
sl@0: 	return TheSgExtensionImpl->FindAndOpenResource(aId, aResource);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt SgExtension::GlobalResourceCount()
sl@0: 	{
sl@0: 	if (!TheSgExtensionImpl)
sl@0: 		{
sl@0: 		__KTRACE_OPT(KPANIC, Kern::Printf("Error: Graphics Extension not ready"));
sl@0: 		return KErrNotReady;
sl@0: 		}
sl@0: 	return TheSgExtensionImpl->GlobalResourceCount();
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt SgExtension::GlobalGraphicsMemoryUsed()
sl@0: 	{
sl@0: 	if (!TheSgExtensionImpl)
sl@0: 		{
sl@0: 		__KTRACE_OPT(KPANIC, Kern::Printf("Error: Graphics Extension not ready"));
sl@0: 		return KErrNotReady;
sl@0: 		}
sl@0: 	return TheSgExtensionImpl->GlobalGraphicsMemoryUsed();
sl@0: 	}
sl@0: 
sl@0: TInt DSgExtensionImpl::Construct()
sl@0: 	{
sl@0: 	return Kern::MutexCreate(iMutex, KNullDesC8, KMutexOrdGeneral0);
sl@0: 	}
sl@0: 
sl@0: TInt DSgExtensionImpl::CreateResource(TUint32 aAttribs, const TDesC8& aMetaData, TInt aDataSize, DSgResource*& aResource)
sl@0: 	{
sl@0: 	if (aDataSize <= 0)
sl@0: 		{
sl@0: 		return KErrArgument;
sl@0: 		}
sl@0: 	DSgResourceImpl* resource = static_cast<DSgResourceImpl*>(Kern::Alloc(sizeof(DSgResourceImpl) + aMetaData.Size()));
sl@0: 	if (!resource)
sl@0: 		{
sl@0: 		return KErrNoMemory;
sl@0: 		}
sl@0:     TChunkCreateInfo info;
sl@0: 	info.iType = TChunkCreateInfo::ESharedKernelMultiple;
sl@0: 	info.iMaxSize = aDataSize;
sl@0: 	info.iOwnsMemory = ETrue;
sl@0: #ifdef __WINS__
sl@0: 	info.iMapAttr = aAttribs, 0; // suppress compiler warning: cache attribute does not apply to WINS
sl@0: #else
sl@0: 	info.iMapAttr = aAttribs & ESgResourceAttrCpuCached ? EMapAttrCachedMax : EMapAttrL1Uncached;
sl@0: #endif
sl@0: 	DChunk* chunk;
sl@0: 	TLinAddr kernAddr;
sl@0: 	TUint32 mapAttr;
sl@0: 	TInt err = Kern::ChunkCreate(info, chunk, kernAddr, mapAttr);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		Kern::Free(resource);
sl@0: 		return err;
sl@0: 		}
sl@0: 	err = Kern::ChunkCommit(chunk, 0, aDataSize);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		Kern::ChunkClose(chunk);
sl@0: 		Kern::Free(resource);
sl@0: 		return err;
sl@0: 		}
sl@0: 	Kern::MutexWait(*iMutex);
sl@0: 	new(resource) DSgResourceImpl(*this, ++iLastResourceId, aAttribs, aMetaData, chunk, aDataSize);
sl@0: 	err = iResources.InsertInOrder(resource, DSgResource::Compare);
sl@0: 	Kern::MutexSignal(*iMutex);
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		resource->Close();
sl@0: 		}
sl@0: 	aResource = (err == KErrNone ? resource : NULL);
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: TInt DSgExtensionImpl::FindAndOpenResource(TUint64 aId, DSgResource*& aResource)
sl@0: 	{
sl@0: 	if (aId == 0)
sl@0: 		{
sl@0: 		return KErrArgument;
sl@0: 		}
sl@0: 	Kern::MutexWait(*iMutex);
sl@0: 	TInt i = iResources.FindInOrder(aId, DSgResource::Compare);
sl@0: 	if (i < 0)
sl@0: 		{
sl@0: 		Kern::MutexSignal(*iMutex);
sl@0: 		return KErrNotFound;
sl@0: 		}
sl@0: 	DSgResource* resource = iResources[i];
sl@0: 	TInt err = resource->Open();
sl@0: 	Kern::MutexSignal(*iMutex);
sl@0: 	aResource = (err == KErrNone ? resource : NULL);
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: void DSgExtensionImpl::DeleteResource(DSgResource* aResource)
sl@0: 	{
sl@0: 	Kern::MutexWait(*iMutex);
sl@0: 	TInt i = iResources.FindInOrder(aResource, DSgResource::Compare);
sl@0: 	if (i >= 0)
sl@0: 		{
sl@0: 		iResources.Remove(i);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		__KTRACE_OPT(KPANIC, Kern::Printf("Error: internal state of Graphics Extension is inconsistent"));
sl@0: 		}
sl@0: 	Kern::MutexSignal(*iMutex);
sl@0: 	delete aResource;
sl@0: 	}
sl@0: 
sl@0: TInt DSgExtensionImpl::GlobalResourceCount() const
sl@0: 	{
sl@0: 	return iResources.Count();
sl@0: 	}
sl@0: 
sl@0: TInt DSgExtensionImpl::GlobalGraphicsMemoryUsed() const
sl@0: 	{
sl@0: 	TInt ret = 0;
sl@0: 	Kern::MutexWait(*iMutex);
sl@0: 	TInt n = iResources.Count();
sl@0: 	for (TInt i = 0; i < n; ++i)
sl@0: 		{
sl@0: 		ret += iResources[i]->DataChunk()->Size();
sl@0: 		}
sl@0: 	Kern::MutexSignal(*iMutex);
sl@0: 	return ret;
sl@0: 	}