Init

2025-11-28 23:13:44 +05:30
commit a3a8e79709
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--- a/physx/source/foundation/include/PsAlloca.h
+++ b/physx/source/foundation/include/PsAlloca.h
@ -0,0 +1,76 @@
+//
+// 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) 2008-2021 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 PSFOUNDATION_PSALLOCA_H
+#define PSFOUNDATION_PSALLOCA_H
+
+#include "PsTempAllocator.h"
+
+namespace physx
+{
+namespace shdfnd
+{
+template <typename T, typename Alloc = TempAllocator>
+class ScopedPointer : private Alloc
+{
+  public:
+	~ScopedPointer()
+	{
+		if(mOwned)
+			Alloc::deallocate(mPointer);
+	}
+
+	operator T*() const
+	{
+		return mPointer;
+	}
+
+	T* mPointer;
+	bool mOwned;
+};
+
+} // namespace shdfnd
+} // namespace physx
+
+/*! Stack allocation for \c count instances of \c type. Falling back to temp allocator if using more than 1kB. */
+#ifdef __SPU__
+#define PX_ALLOCA(var, type, count) type* var = reinterpret_cast<type*>(PxAlloca(sizeof(type) * (count)))
+#else
+#define PX_ALLOCA(var, type, count)                                                                                    \
+	physx::shdfnd::ScopedPointer<type> var;                                                                            \
+	{                                                                                                                  \
+		uint32_t size = sizeof(type) * (count);                                                                        \
+		var.mOwned = size > 1024;                                                                                      \
+		if(var.mOwned)                                                                                                 \
+			var.mPointer = reinterpret_cast<type*>(physx::shdfnd::TempAllocator().allocate(size, __FILE__, __LINE__)); \
+		else                                                                                                           \
+			var.mPointer = reinterpret_cast<type*>(PxAlloca(size));                                                    \
+	}
+#endif
+#endif // #ifndef PSFOUNDATION_PSALLOCA_H