Re: overload operator new with a spcialized memory manager instance

Pete Becker <>
Wed, 27 Aug 2008 15:52:48 -0400
On 2008-08-27 15:25:44 -0400, "Maximus" <> said:

I am trying to find a way to overload operator new of a class to use a
specialzied memory manager. In my design multiple memory managers exist. I
need to pass the instance of a memory manager into operator new. In ANSI C,
it is quite simple, like this:

type_t* ansi_c_init(MemoryManager* m)
    type_t* a = (type_t*)->alloc_bytes(sizeof(type_t));
    a->memory_manager = m;

According to my read, the new() overload is actually a static method and can
not call any members. So my question is, it is a backward in C++? Is it even
possible to customize memory allocation with a specialized memory manager?

void *operator new(size_t size, MemoryManager& m)
// whatever

FunkyMemoryManager mm;
new (mm) int(3); // calls operator new(size_t, MemoryManager&)

Roundhouse Consulting, Ltd. ( Author of "The
Standard C++ Library Extensions: a Tutorial and Reference

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