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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* */
/* This file is part of the class library */
/* SoPlex --- the Sequential object-oriented simPlex. */
/* */
/* Copyright 1996-2022 Zuse Institute Berlin */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/* */
/* You should have received a copy of the Apache-2.0 license */
/* along with SoPlex; see the file LICENSE. If not email to soplex@zib.de. */
/* */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/**@file spxalloc.h
* @brief Memory allocation routines.
*/
#ifndef _SPXALLOC_H_
#define _SPXALLOC_H_
#include <iostream>
#include <stdlib.h>
#include <assert.h>
#include "soplex/spxdefines.h"
#include "soplex/spxout.h"
#include "soplex/exceptions.h"
namespace soplex
{
/**@name Memory allocation routines
* @ingroup Elementary
* Here we have cover functions for malloc/realloc/free, to make sure
* that we allays succeed. Otherwise an exception is thrown.
*
* We use templates to get the types right, otherwise casts would have
* been neccessary.
*/
///@{
/**@brief Allocate memory.
* @param p some pointer
* @param n the number of elements \p p will point to.
* @throw SPxMemoryException if memory could not be allocated.
*/
template <class T>
inline void spx_alloc(T& p, int n = 1)
{
assert(p == 0);
assert(n >= 0);
if(n == 0)
n = 1;
try
{
p = reinterpret_cast<T>(malloc(sizeof(*p) * (unsigned int) n));
}
catch(const std::bad_alloc&)
{
throw(SPxMemoryException("Error allocating memory"));
}
if(nullptr == p)
{
// coverity[suspicious_sizeof]
std::cerr << "EMALLC01 malloc: Out of memory - cannot allocate "
<< sizeof(*p) * (unsigned int) n << " bytes" << std::endl;
throw(SPxMemoryException("XMALLC01 malloc: Could not allocate enough memory"));
}
}
/**@brief Change amount of allocated memory.
* @param p some pointer
* @param n the number of elements p should point to.
* @throw SPxMemoryException if memory could not be allocated.
*/
template <class T>
inline void spx_realloc(T& p, int n)
{
assert(n >= 0);
/* new pointer to not lose old one in case of problems */
T pp;
if(n == 0)
n = 1;
try
{
pp = reinterpret_cast<T>(realloc(p, sizeof(*p) * (unsigned int) n));
}
catch(const std::bad_alloc&)
{
throw(SPxMemoryException("Error reallocating memory"));
}
if(0 == pp)
{
std::cerr << "EMALLC02 realloc: Out of memory - cannot allocate "
<< sizeof(*p) * (unsigned int) n << " bytes" << std::endl;
throw(SPxMemoryException("XMALLC02 realloc: Could not allocate enough memory"));
}
p = pp;
}
/// Release memory
template <class T>
inline void spx_free(T& p)
{
assert(p != 0);
free(p);
p = 0;
}
///@}
} // namespace soplex
#endif // _SPXALLOC_H_