C++ "automatic" memory management

enables you to be able to be worry-free about memory leaks

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Usage:

1 header include only.

Derive your classes from MemObject.

MemRegistry::obliviate(); // before program exit

Use other classes as

Derived<Other>* pointer = new Derived<Other>();
Other* pointerToOther = pointer->get();

see Test Application.

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Example:

#include "MemoryManagement/mm.hpp"

// derive your classes from MemObject

int main()
{
	// your code

	MemRegistry::obliviate();		// before program exit
}

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You can still delete your objects before program exit when you like if you like, nothing extra to consider; but for other classes objects delete the Derived<Other>* pointer (not the get()ten one).

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You can request a MemType by MemTypeProvider::requestMemType() and MemRegistry::switchType(MemType& toSwitchTo, bool oneTimeOnly = true) until possible MemRegistry::revokeType() (when oneTimeOnly = false) to bin your new objects into a group which you can MemRegistry::forget(MemType&) on a whim when you don't need this batch anymore or leave that up to MemRegistry::obliviate(). MemRegistry::forget(memTypeObject) does MemTypeProvider::returnMemType(memTypeObject) which puts memTypeObject back in the pool of possible provided MemType, do not reuse a returned MemType object; you may MemTypeProvider::reuseReturnedMemTypes = false; to prevent returned memTypeObject be put back in the pool which eliminates some computation and space used, see Note further below about amount of available MemType.

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Overhead:

• spatial:
  [sizeof(1 pointer), sizeof(size_t), sizeof(unsigned long long), compiler-dependant base class management bytes] per new during runtime + some fixed bytes + some bytes per many new (due to STL containers dynamic memory) until program exit
• computational:
  few operations when new and few when you delete, some more when forgetting and obliviateing

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Note:
Requested MemTypes might deplenish, check if yourMemType.isInvalid(), after 2^64 - 1 requests.

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Thread-Safety:
To use MemObject-derived classes from threads, explicitly pass a MemType unique to a thread to the constructor of MemObject for derived classes instantiated on that thread; see Test Application.

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Test Application tested with Visual Studio 2022 with C++ 20 on Windows 11.