c++ - How are malloc and free implemented? -

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I want to implement my own dynamic memory management system so that it can add new features that can be used in C ++ memory Let's help in the management.

I use Windows (XP) and Linux (Ubuntu) to implement tasks like 'Molk' and 'Free'. I think I have to use the lowest level system call.

For Windows, I've got the task: GetProcessHeap, HeapAlloc, HeapCreate, HeapDestroy and HeapFree.

For Linux, I have no system call for heap management

edit:
C ++ garbage collector and trash The collector does not provide, Linux, Molok and system calls for free? Is slow. Some allocation is easy to free, but the allocation is that a garbage collector is needed.

I want to implement these functions and add new features:
* Whenever called free (), check whether the indicator falls under the heap.
* Help with garbage collection. I have to store some information about allocated blocks.
* Use Multiple Stacks (Hepcat / Hypdstore on Windows) I can quickly remove an entire heap with my allocated blocks.

On Linux, Maulok and Free System are not saying Receives malloc / free memory from the kernel, and with the brk system call as well as receiving anonymous memory with mmap - and malloc, increasing the data segment and shrinking it (If it can be) manage memory in those areas, some basic information can be found in any great context.


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