feat(physics): wire physx sdk into build

engine/third_party/physx/source/foundation/FdTempAllocator.cpp

@@ -0,0 +1,145 @@
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+//  * Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//  * Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//  * Neither the name of NVIDIA CORPORATION nor the names of its
+//    contributors may be used to endorse or promote products derived
+//    from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008-2025 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+#include "foundation/PxMath.h"
+#include "foundation/PxIntrinsics.h"
+#include "foundation/PxBitUtils.h"
+#include "foundation/PxArray.h"
+#include "foundation/PxMutex.h"
+#include "foundation/PxAtomic.h"
+#include "foundation/PxTempAllocator.h"
+
+#include "FdFoundation.h"
+
+#if PX_VC
+#pragma warning(disable : 4706) // assignment within conditional expression
+#endif
+
+physx::AllocFreeTable& getTempAllocFreeTable();
+physx::Mutex& getTempAllocMutex();
+
+namespace physx
+{
+union PxTempAllocatorChunk
+{
+	PxTempAllocatorChunk* mNext; // while chunk is free
+	PxU32 mIndex;           // while chunk is allocated
+	PxU8 mPad[16];          // 16 byte aligned allocations
+};
+namespace
+{
+typedef PxTempAllocatorChunk Chunk;
+
+const PxU32 sMinIndex = 8;  // 256B min
+const PxU32 sMaxIndex = 17; // 128kB max
+}
+
+void* PxTempAllocator::allocate(size_t size, const char* filename, PxI32 line)
+{
+	if(!size)
+		return 0;
+
+	PxU32 index = PxMax(PxHighestSetBit(PxU32(size) + sizeof(Chunk) - 1), sMinIndex);
+
+	Chunk* chunk = 0;
+	if(index < sMaxIndex)
+	{
+		Mutex::ScopedLock lock(getTempAllocMutex());
+
+		// find chunk up to 16x bigger than necessary
+		AllocFreeTable& freeTable = getTempAllocFreeTable();
+		Chunk** it = freeTable.begin() + index - sMinIndex;
+		Chunk** end = PxMin(it + 3, freeTable.end());
+		while(it < end && !(*it))
+			++it;
+
+		if(it < end)
+		{
+			// pop top off freelist
+			chunk = *it;
+			*it = chunk->mNext;
+			index = PxU32(it - freeTable.begin() + sMinIndex);
+		}
+		else
+			// create new chunk
+			chunk = reinterpret_cast<Chunk*>(PxAllocator().allocate(size_t(2 << index), filename, line));
+	}
+	else
+	{
+		// too big for temp allocation, forward to base allocator
+		chunk = reinterpret_cast<Chunk*>(PxAllocator().allocate(size + sizeof(Chunk), filename, line));
+	}
+
+	chunk->mIndex = index;
+	void* ret = chunk + 1;
+	PX_ASSERT((size_t(ret) & 0xf) == 0); // SDK types require at minimum 16 byte alignment.
+	return ret;
+}
+
+void PxTempAllocator::deallocate(void* ptr)
+{
+	if(!ptr)
+		return;
+
+	Chunk* chunk = reinterpret_cast<Chunk*>(ptr) - 1;
+	PxU32 index = chunk->mIndex;
+
+	if(index >= sMaxIndex)
+		return PxAllocator().deallocate(chunk);
+
+	Mutex::ScopedLock lock(getTempAllocMutex());
+
+	index -= sMinIndex;
+
+	AllocFreeTable& freeTable = getTempAllocFreeTable();
+
+	if(freeTable.size() <= index)
+		freeTable.resize(index + 1);
+
+	chunk->mNext = freeTable[index];
+	freeTable[index] = chunk;
+}
+
+} // namespace physx
+
+using namespace physx;
+
+void deallocateTempBufferAllocations(AllocFreeTable& mTempAllocFreeTable)
+{
+	PxAllocator alloc;
+	for(PxU32 i = 0; i < mTempAllocFreeTable.size(); ++i)
+	{
+		for(PxTempAllocatorChunk* ptr = mTempAllocFreeTable[i]; ptr;)
+		{
+			PxTempAllocatorChunk* next = ptr->mNext;
+			alloc.deallocate(ptr);
+			ptr = next;
+		}
+	}
+	mTempAllocFreeTable.reset();
+}