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Diffstat (limited to 'extern/ceres/include/ceres/internal/scoped_ptr.h')
| -rw-r--r-- | extern/ceres/include/ceres/internal/scoped_ptr.h | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/extern/ceres/include/ceres/internal/scoped_ptr.h b/extern/ceres/include/ceres/internal/scoped_ptr.h deleted file mode 100644 index fa0ac25a031..00000000000 --- a/extern/ceres/include/ceres/internal/scoped_ptr.h +++ /dev/null @@ -1,310 +0,0 @@ -// Ceres Solver - A fast non-linear least squares minimizer -// Copyright 2015 Google Inc. All rights reserved. -// http://ceres-solver.org/ -// -// 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 Google Inc. 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 AND CONTRIBUTORS "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. -// -// Author: jorg@google.com (Jorg Brown) -// -// This is an implementation designed to match the anticipated future TR2 -// implementation of the scoped_ptr class, and its closely-related brethren, -// scoped_array, scoped_ptr_malloc, and make_scoped_ptr. - -#ifndef CERES_PUBLIC_INTERNAL_SCOPED_PTR_H_ -#define CERES_PUBLIC_INTERNAL_SCOPED_PTR_H_ - -#include <assert.h> -#include <stdlib.h> -#include <cstddef> -#include <algorithm> - -namespace ceres { -namespace internal { - -template <class C> class scoped_ptr; -template <class C, class Free> class scoped_ptr_malloc; -template <class C> class scoped_array; - -template <class C> -scoped_ptr<C> make_scoped_ptr(C *); - -// A scoped_ptr<T> is like a T*, except that the destructor of -// scoped_ptr<T> automatically deletes the pointer it holds (if -// any). That is, scoped_ptr<T> owns the T object that it points -// to. Like a T*, a scoped_ptr<T> may hold either NULL or a pointer to -// a T object. Also like T*, scoped_ptr<T> is thread-compatible, and -// once you dereference it, you get the threadsafety guarantees of T. -// -// The size of a scoped_ptr is small: sizeof(scoped_ptr<C>) == sizeof(C*) -template <class C> -class scoped_ptr { - public: - // The element type - typedef C element_type; - - // Constructor. Defaults to intializing with NULL. - // There is no way to create an uninitialized scoped_ptr. - // The input parameter must be allocated with new. - explicit scoped_ptr(C* p = NULL) : ptr_(p) { } - - // Destructor. If there is a C object, delete it. - // We don't need to test ptr_ == NULL because C++ does that for us. - ~scoped_ptr() { - enum { type_must_be_complete = sizeof(C) }; - delete ptr_; - } - - // Reset. Deletes the current owned object, if any. - // Then takes ownership of a new object, if given. - // this->reset(this->get()) works. - void reset(C* p = NULL) { - if (p != ptr_) { - enum { type_must_be_complete = sizeof(C) }; - delete ptr_; - ptr_ = p; - } - } - - // Accessors to get the owned object. - // operator* and operator-> will assert() if there is no current object. - C& operator*() const { - assert(ptr_ != NULL); - return *ptr_; - } - C* operator->() const { - assert(ptr_ != NULL); - return ptr_; - } - C* get() const { return ptr_; } - - // Comparison operators. - // These return whether a scoped_ptr and a raw pointer refer to - // the same object, not just to two different but equal objects. - bool operator==(const C* p) const { return ptr_ == p; } - bool operator!=(const C* p) const { return ptr_ != p; } - - // Swap two scoped pointers. - void swap(scoped_ptr& p2) { - C* tmp = ptr_; - ptr_ = p2.ptr_; - p2.ptr_ = tmp; - } - - // Release a pointer. - // The return value is the current pointer held by this object. - // If this object holds a NULL pointer, the return value is NULL. - // After this operation, this object will hold a NULL pointer, - // and will not own the object any more. - C* release() { - C* retVal = ptr_; - ptr_ = NULL; - return retVal; - } - - private: - C* ptr_; - - // google3 friend class that can access copy ctor (although if it actually - // calls a copy ctor, there will be a problem) see below - friend scoped_ptr<C> make_scoped_ptr<C>(C *p); - - // Forbid comparison of scoped_ptr types. If C2 != C, it totally doesn't - // make sense, and if C2 == C, it still doesn't make sense because you should - // never have the same object owned by two different scoped_ptrs. - template <class C2> bool operator==(scoped_ptr<C2> const& p2) const; - template <class C2> bool operator!=(scoped_ptr<C2> const& p2) const; - - // Disallow evil constructors - scoped_ptr(const scoped_ptr&); - void operator=(const scoped_ptr&); -}; - -// Free functions -template <class C> -inline void swap(scoped_ptr<C>& p1, scoped_ptr<C>& p2) { - p1.swap(p2); -} - -template <class C> -inline bool operator==(const C* p1, const scoped_ptr<C>& p2) { - return p1 == p2.get(); -} - -template <class C> -inline bool operator==(const C* p1, const scoped_ptr<const C>& p2) { - return p1 == p2.get(); -} - -template <class C> -inline bool operator!=(const C* p1, const scoped_ptr<C>& p2) { - return p1 != p2.get(); -} - -template <class C> -inline bool operator!=(const C* p1, const scoped_ptr<const C>& p2) { - return p1 != p2.get(); -} - -template <class C> -scoped_ptr<C> make_scoped_ptr(C *p) { - // This does nothing but to return a scoped_ptr of the type that the passed - // pointer is of. (This eliminates the need to specify the name of T when - // making a scoped_ptr that is used anonymously/temporarily.) From an - // access control point of view, we construct an unnamed scoped_ptr here - // which we return and thus copy-construct. Hence, we need to have access - // to scoped_ptr::scoped_ptr(scoped_ptr const &). However, it is guaranteed - // that we never actually call the copy constructor, which is a good thing - // as we would call the temporary's object destructor (and thus delete p) - // if we actually did copy some object, here. - return scoped_ptr<C>(p); -} - -// scoped_array<C> is like scoped_ptr<C>, except that the caller must allocate -// with new [] and the destructor deletes objects with delete []. -// -// As with scoped_ptr<C>, a scoped_array<C> either points to an object -// or is NULL. A scoped_array<C> owns the object that it points to. -// scoped_array<T> is thread-compatible, and once you index into it, -// the returned objects have only the threadsafety guarantees of T. -// -// Size: sizeof(scoped_array<C>) == sizeof(C*) -template <class C> -class scoped_array { - public: - // The element type - typedef C element_type; - - // Constructor. Defaults to intializing with NULL. - // There is no way to create an uninitialized scoped_array. - // The input parameter must be allocated with new []. - explicit scoped_array(C* p = NULL) : array_(p) { } - - // Destructor. If there is a C object, delete it. - // We don't need to test ptr_ == NULL because C++ does that for us. - ~scoped_array() { - enum { type_must_be_complete = sizeof(C) }; - delete[] array_; - } - - // Reset. Deletes the current owned object, if any. - // Then takes ownership of a new object, if given. - // this->reset(this->get()) works. - void reset(C* p = NULL) { - if (p != array_) { - enum { type_must_be_complete = sizeof(C) }; - delete[] array_; - array_ = p; - } - } - - // Get one element of the current object. - // Will assert() if there is no current object, or index i is negative. - C& operator[](std::ptrdiff_t i) const { - assert(i >= 0); - assert(array_ != NULL); - return array_[i]; - } - - // Get a pointer to the zeroth element of the current object. - // If there is no current object, return NULL. - C* get() const { - return array_; - } - - // Comparison operators. - // These return whether a scoped_array and a raw pointer refer to - // the same array, not just to two different but equal arrays. - bool operator==(const C* p) const { return array_ == p; } - bool operator!=(const C* p) const { return array_ != p; } - - // Swap two scoped arrays. - void swap(scoped_array& p2) { - C* tmp = array_; - array_ = p2.array_; - p2.array_ = tmp; - } - - // Release an array. - // The return value is the current pointer held by this object. - // If this object holds a NULL pointer, the return value is NULL. - // After this operation, this object will hold a NULL pointer, - // and will not own the object any more. - C* release() { - C* retVal = array_; - array_ = NULL; - return retVal; - } - - private: - C* array_; - - // Forbid comparison of different scoped_array types. - template <class C2> bool operator==(scoped_array<C2> const& p2) const; - template <class C2> bool operator!=(scoped_array<C2> const& p2) const; - - // Disallow evil constructors - scoped_array(const scoped_array&); - void operator=(const scoped_array&); -}; - -// Free functions -template <class C> -inline void swap(scoped_array<C>& p1, scoped_array<C>& p2) { - p1.swap(p2); -} - -template <class C> -inline bool operator==(const C* p1, const scoped_array<C>& p2) { - return p1 == p2.get(); -} - -template <class C> -inline bool operator==(const C* p1, const scoped_array<const C>& p2) { - return p1 == p2.get(); -} - -template <class C> -inline bool operator!=(const C* p1, const scoped_array<C>& p2) { - return p1 != p2.get(); -} - -template <class C> -inline bool operator!=(const C* p1, const scoped_array<const C>& p2) { - return p1 != p2.get(); -} - -// This class wraps the c library function free() in a class that can be -// passed as a template argument to scoped_ptr_malloc below. -class ScopedPtrMallocFree { - public: - inline void operator()(void* x) const { - free(x); - } -}; - -} // namespace internal -} // namespace ceres - -#endif // CERES_PUBLIC_INTERNAL_SCOPED_PTR_H_ |