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120 lines
5.1 KiB
120 lines
5.1 KiB
// Ceres Solver - A fast non-linear least squares minimizer
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// Copyright 2015 Google Inc. All rights reserved.
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// http://ceres-solver.org/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: keir@google.com (Keir Mierle)
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#ifndef CERES_PUBLIC_INTERNAL_PORT_H_
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#define CERES_PUBLIC_INTERNAL_PORT_H_
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// This file needs to compile as c code.
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#ifdef __cplusplus
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#include <cstddef>
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#include "ceres/internal/config.h"
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#if defined(CERES_USE_OPENMP)
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# if defined(CERES_USE_TBB) || defined(CERES_USE_CXX11_THREADS) || defined(CERES_NO_THREADS)
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# error CERES_USE_OPENMP is mutually exclusive to CERES_USE_TBB, CERES_USE_CXX11_THREADS, and CERES_NO_THREADS
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# endif
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#elif defined(CERES_USE_TBB)
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# if defined(CERES_USE_OPENMP) || defined(CERES_USE_CXX11_THREADS) || defined(CERES_NO_THREADS)
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# error CERES_USE_TBB is mutually exclusive to CERES_USE_OPENMP, CERES_USE_CXX11_THREADS and CERES_NO_THREADS
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# endif
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#elif defined(CERES_USE_CXX11_THREADS)
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# if defined(CERES_USE_OPENMP) || defined(CERES_USE_TBB) || defined(CERES_NO_THREADS)
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# error CERES_USE_CXX11_THREADS is mutually exclusive to CERES_USE_OPENMP, CERES_USE_CXX11_THREADS and CERES_NO_THREADS
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# endif
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#elif defined(CERES_NO_THREADS)
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# if defined(CERES_USE_OPENMP) || defined(CERES_USE_TBB) || defined(CERES_USE_CXX11_THREADS)
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# error CERES_NO_THREADS is mutually exclusive to CERES_USE_OPENMP, CERES_USE_TBB and CERES_USE_CXX11_THREADS
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# endif
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#else
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# error One of CERES_USE_OPENMP, CERES_USE_TBB,CERES_USE_CXX11_THREADS or CERES_NO_THREADS must be defined.
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#endif
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#if defined(CERES_TR1_MEMORY_HEADER)
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#include <tr1/memory>
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#else
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#include <memory>
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#endif
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namespace ceres {
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#if defined(CERES_TR1_SHARED_PTR)
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using std::tr1::shared_ptr;
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#else
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using std::shared_ptr;
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#endif
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// We allocate some Eigen objects on the stack and other places they
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// might not be aligned to X(=16 [SSE], 32 [AVX] etc)-byte boundaries. If we
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// have C++11, we can specify their alignment (which is desirable, as it means
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// we can safely enable vectorisation on matrices). However, the standard gives
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// wide lattitude as to what alignments are legal. It must be the case that
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// alignments up to alignof(std::max_align_t) are valid, but this might be < 16
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// on some platforms, in which case even if using C++11, on these platforms
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// we should not attempt to align to X-byte boundaries. If using < C++11,
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// we cannot specify the alignment.
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#ifdef CERES_USE_CXX11
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namespace port_constants {
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static constexpr size_t kMaxAlignBytes =
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// Work around a GCC 4.8 bug
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// (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56019) where
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// std::max_align_t is misplaced.
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#if defined (__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ == 8
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alignof(::max_align_t);
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#else
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alignof(std::max_align_t);
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#endif
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} // namespace port_constants
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#endif
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} // namespace ceres
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#endif // __cplusplus
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// A macro to signal which functions and classes are exported when
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// building a DLL with MSVC.
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//
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// Note that the ordering here is important, CERES_BUILDING_SHARED_LIBRARY
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// is only defined locally when Ceres is compiled, it is never exported to
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// users. However, in order that we do not have to configure config.h
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// separately for building vs installing, if we are using MSVC and building
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// a shared library, then both CERES_BUILDING_SHARED_LIBRARY and
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// CERES_USING_SHARED_LIBRARY will be defined when Ceres is compiled.
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// Hence it is important that the check for CERES_BUILDING_SHARED_LIBRARY
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// happens first.
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#if defined(_MSC_VER) && defined(CERES_BUILDING_SHARED_LIBRARY)
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# define CERES_EXPORT __declspec(dllexport)
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#elif defined(_MSC_VER) && defined(CERES_USING_SHARED_LIBRARY)
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# define CERES_EXPORT __declspec(dllimport)
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#else
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# define CERES_EXPORT
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#endif
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#endif // CERES_PUBLIC_INTERNAL_PORT_H_
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