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omallocClass.h
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#ifndef OMALLOCCLASS_H
#define OMALLOCCLASS_H
/****************************************
* Computer Algebra System SINGULAR *
****************************************/
/*
* ABSTRACT: standard version of C++-memory management alloc func
*/
#ifdef __cplusplus
#include <new>
#include <stdlib.h>
#include "omalloc/omConfig.h"
#ifdef HAVE_OMALLOC
#include "omalloc/omalloc.h"
class omallocClass
{
public:
/* We define those, so that our values of
OM_TRACK and OM_CHECK are used */
void* operator new ( size_t size )
#ifndef __GNUC__
throw (std::bad_alloc)
#endif
{
void* addr;
omTypeAlloc(void*, addr, size);
return addr;
}
void operator delete ( void* block )
#ifndef __GNUC__
throw ()
#endif
{
omFree( block );
}
void* operator new[] ( size_t size )
#ifndef __GNUC__
throw (std::bad_alloc)
#endif
{
void* addr;
if (size==(size_t)0) size = (size_t)1;
omTypeAlloc(void*, addr, size);
return addr;
}
void operator delete[] ( void* block )
#ifndef __GNUC__
throw ()
#endif
{
omfree( block );
}
// The C++ standard has ratified a change to the new operator.
//
// T *p = new T;
//
// Previously, if the call to new above failed, a null pointer would've been returned.
// Under the ISO C++ Standard, an exception of type std::bad_alloc is thrown.
// It is possible to suppress this behaviour in favour of the old style
// by using the nothrow version.
//
// T *p = new (std::nothrow) T;
//
// So we have to overload this new also, just to be sure.
//
// A further interesting question is, if you don't have enough resources
// to allocate a request for memory,
// do you expect to have enough to be able to deal with it?
// Most operating systems will have slowed to be unusable
// long before the exception gets thrown.
void * operator new(size_t size, const std::nothrow_t &) throw();
void * operator new[](size_t size, const std::nothrow_t &) throw();
};
#endif
#endif
#endif
size
int size(const CanonicalForm &f, const Variable &v)
int size ( const CanonicalForm & f, const Variable & v )
Definition cf_ops.cc:600
omallocClass
Definition omallocClass.h:20
omfree
#define omfree(addr)
Definition omAllocDecl.h:237
omFree
#define omFree(addr)
Definition omAllocDecl.h:261
omTypeAlloc
#define omTypeAlloc(type, addr, size)
Definition omAllocDecl.h:208
omalloc.h
block
#define block
Definition scanner.cc:646