Initial commit:

PhysX 3.4.0 Update @ 21294896
APEX 1.4.0 Update @ 21275617

[CL 21300167]

1 files changed, 157 insertions, 0 deletions

diff --git a/PhysX_3.4/Source/Common/src/CmFlushPool.h b/PhysX_3.4/Source/Common/src/CmFlushPool.h
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+++ b/PhysX_3.4/Source/Common/src/CmFlushPool.h
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+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2008-2016 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
+
+
+#ifndef PX_PHYSICS_COMMON_FLUSHPOOL
+#define PX_PHYSICS_COMMON_FLUSHPOOL
+
+#include "foundation/Px.h"
+#include "PsUserAllocated.h"
+#include "CmPhysXCommon.h"
+#include "PsMutex.h"
+#include "PsArray.h"
+#include "PsBitUtils.h"
+
+/*
+Pool used to allocate variable sized tasks. It's intended to be cleared after a short period (time step).
+*/
+
+namespace physx
+{
+namespace Cm
+{
+	static const PxU32 sSpareChunkCount = 2;
+
+	class FlushPool
+	{
+		PX_NOCOPY(FlushPool)
+	public:
+		FlushPool(PxU32 chunkSize) : mChunks(PX_DEBUG_EXP("FlushPoolChunk")), mChunkIndex(0), mOffset(0), mChunkSize(chunkSize)
+		{
+			mChunks.pushBack(static_cast<PxU8*>(PX_ALLOC(mChunkSize, "PxU8")));
+		}
+
+		~FlushPool()
+		{
+			for (PxU32 i = 0; i < mChunks.size(); ++i)
+				PX_FREE(mChunks[i]);
+		}
+
+		// alignment must be a power of two
+		void* allocate(PxU32 size, PxU32 alignment=16)
+		{
+			Ps::Mutex::ScopedLock lock(mMutex);
+			return allocateNotThreadSafe(size, alignment);
+		}
+
+		// alignment must be a power of two
+		void* allocateNotThreadSafe(PxU32 size, PxU32 alignment=16)
+		{
+			PX_ASSERT(shdfnd::isPowerOfTwo(alignment));
+			PX_ASSERT(size <= mChunkSize && !mChunks.empty());
+			
+			// padding for alignment
+			size_t unalignedStart = reinterpret_cast<size_t>(mChunks[mChunkIndex]+mOffset);
+			PxU32 pad = PxU32(((unalignedStart+alignment-1)&~(size_t(alignment)-1)) - unalignedStart);
+
+			if (mOffset + size + pad > mChunkSize)
+			{
+				mChunkIndex++;
+				mOffset = 0;
+				if (mChunkIndex >= mChunks.size())
+					mChunks.pushBack(static_cast<PxU8*>(PX_ALLOC(mChunkSize, "PxU8")));
+
+				// update padding to ensure new alloc is aligned
+				unalignedStart = reinterpret_cast<size_t>(mChunks[mChunkIndex]);
+				pad = PxU32(((unalignedStart+alignment-1)&~(size_t(alignment)-1)) - unalignedStart);
+			}
+
+			void* ptr = mChunks[mChunkIndex] + mOffset + pad;
+			PX_ASSERT((reinterpret_cast<size_t>(ptr)&(size_t(alignment)-1)) == 0);
+			mOffset += size + pad;
+			return ptr;
+		}
+
+		void clear(PxU32 spareChunkCount = sSpareChunkCount)
+		{
+			Ps::Mutex::ScopedLock lock(mMutex);
+			
+			clearNotThreadSafe(spareChunkCount);
+		}
+
+		void clearNotThreadSafe(PxU32 spareChunkCount = sSpareChunkCount)
+		{
+			PX_UNUSED(spareChunkCount);
+
+			//release memory not used previously
+			PxU32 targetSize = mChunkIndex+sSpareChunkCount;
+			while (mChunks.size() > targetSize)
+				PX_FREE(mChunks.popBack());
+
+			mChunkIndex = 0;
+			mOffset = 0;
+		}
+
+		void resetNotThreadSafe()
+		{
+			PxU8* firstChunk = mChunks[0];
+
+			for (PxU32 i = 1; i < mChunks.size(); ++i)
+				PX_FREE(mChunks[i]);
+
+			mChunks.clear();
+			mChunks.pushBack(firstChunk);
+			mChunkIndex = 0;
+			mOffset = 0;
+		}
+
+		void lock()
+		{
+			mMutex.lock();
+		}
+
+		void unlock()
+		{
+			mMutex.unlock();	
+		}
+
+	private:
+		Ps::Mutex mMutex;
+		Ps::Array<PxU8*> mChunks;
+		PxU32 mChunkIndex;
+		PxU32 mOffset;
+		PxU32 mChunkSize;
+	};
+
+	
+} // namespace Cm
+
+}
+
+#endif