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omallocClass.cc
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1/****************************************
2* Computer Algebra System SINGULAR *
3****************************************/
4/*
5* ABSTRACT: standard version of C++-memory management alloc func
6*/
7
8#ifdef __cplusplus
9
10#include <new>
11#include <stdlib.h>
13// The C++ standard has ratified a change to the new operator.
14//
15// T *p = new T;
16//
17// Previously, if the call to new above failed, a null pointer would've been returned.
18// Under the ISO C++ Standard, an exception of type std::bad_alloc is thrown.
19// It is possible to suppress this behaviour in favour of the old style
20// by using the nothrow version.
21//
22// T *p = new (std::nothrow) T;
23//
24// So we have to overload this new also, just to be sure.
25//
26// A further interesting question is, if you don't have enough resources
27// to allocate a request for memory,
28// do you expect to have enough to be able to deal with it?
29// Most operating systems will have slowed to be unusable
30// long before the exception gets thrown.
31
32void * omallocClass::operator new(size_t size, const std::nothrow_t &) throw()
33{
34 void* addr;
35 omTypeAlloc(void*, addr, size);
36 return addr;
37}
38
39void * omallocClass::operator new[](size_t size, const std::nothrow_t &) throw()
40{
41 void* addr;
42 if (size==(size_t)0) size = (size_t)1;
43 omTypeAlloc(void*, addr, size);
44 return addr;
45}
46#endif
int size(const CanonicalForm &f, const Variable &v)
int size ( const CanonicalForm & f, const Variable & v )
Definition: cf_ops.cc:600
#define omTypeAlloc(type, addr, size)
Definition: omAllocDecl.h:208