Jacob Repp

Collecting yet more references for implementing a custom heap for C++. One of the issues you run into when using a custom heap is the notion of placement new: void *operator new (size_t size, Heap &heap) { return heap.Allocate(size); }

Object allocations now appear so:

Heap local; obj *p = new (local) obj();

And when deleting the memory you must ensure that you give it back to the heap:

operator delete(p, local);

That last part makes the system less friendly. You can however override the operator new and delete for ‘obj’ and give it knoledge of a local heap.

More references:

• Memory management in C++
• C++ in action book (overloading operator new)
• Using C++ Objects in a Handle-Based

Related posts:

• Writing a replacement STL allocator
• Yes more allocator references

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