historical/toontown-classic.git/panda/include/epvector.h
2024-01-16 11:20:27 -06:00

58 lines
2.3 KiB
C++

/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file epvector.h
* @author drose
* @date 2011-12-19
*/
#ifndef EPVECTOR_H
#define EPVECTOR_H
#include "pvector.h"
#if defined(HAVE_EIGEN) && defined(_WIN32) && !defined(_WIN64) && !defined(CPPPARSER)
#include <Eigen/StdVector>
#include <initializer_list>
/**
* Unfortunately, on Windows, std::vector can't be used for classes with
* explicitly alignment requirements, due to a minor mistake in the template
* definition (one of the vector methods receives a concrete object, which the
* compiler flags as an error, even if the method is never called).
*
* As a workaround, Eigen provides their own specialization of vector, using
* their own aligned allocator. We define that here as epvector, which is
* meant to be a drop-in replacement for pvector for classes that include a
* linmath object that requires alignment. Unfortunately, this means we can't
* use the Panda allocator, so memory allocated for this vector class won't be
* tracked as part of Panda's memory tracking system. Them's the breaks,
* kids.
*/
template<class Type>
class epvector : public std::vector<Type, Eigen::aligned_allocator<Type> > {
public:
typedef Eigen::aligned_allocator<Type> allocator;
typedef std::vector<Type, allocator> base_class;
typedef typename base_class::size_type size_type;
epvector(TypeHandle type_handle = pvector_type_handle) : base_class(allocator()) { }
epvector(const epvector<Type> &copy) : base_class(copy) { }
epvector(size_type n, TypeHandle type_handle = pvector_type_handle) : base_class(n, Type(), allocator()) { }
epvector(size_type n, const Type &value, TypeHandle type_handle = pvector_type_handle) : base_class(n, value, allocator()) { }
epvector(const Type *begin, const Type *end, TypeHandle type_handle = pvector_type_handle) : base_class(begin, end, allocator()) { }
epvector(std::initializer_list<Type> init, TypeHandle type_handle = pvector_type_handle) : base_class(std::move(init), allocator()) { }
};
#else // HAVE_EIGEN
#define epvector pvector
#endif // HAVE_EIGEN
#endif