destructor and constructor not work

[wangzhankun]

As the title described, the destructor and constructor function do not work. You can write a print in the destructor and constructor function to test.

[wangzhankun]

I‘m saying that although I use the new/delete operator, the constructor/destructor also do not work.

[jxy-s]

I'm going to need more information than this to assist.

[wangzhankun]

It's my fault. I test the new/delete again. I find only the delete operator not work.

When new an object, the constructor is invoked. But the delete will cause blue screen. I don't know how to use the delete operator and I find no example in your project.

[wangzhankun]

I write a test in your project. But also delete causes blue screen.

[jxy-s]

Ah, sorry that isn't clear. vcrtl implements a delete operator which catches this and bugchecks the system. This is an evil necessity unfortunately, and there is no way to explicitly call the overridden delete with a pool/tag and achieve the proper destruction of the object. I would prefer for that method of deletion (delete a;) not exist to avoid confusion and force explicit pool/tags. I should also apologize for leaving artifacts in alloc.hpp/cpp that are misleading.

Realistically, the safest way to approach allocations using the library is to use the tag/pool allocators objects or a container to achieve the same goal.

You can achieve the same result with a unique smart pointer:

auto a = jxy::make_unique<A, NonPagedPool, '0GAT'>();

This also gives you the convenience of RAII cleaning up the resource when it leaves scope.

Further, if you wish to detach the memory from the smart pointer then re-attach it later, these are the mechanics:

auto rawPointer = a.release();

// some place/time later...

jxy::unique_ptr<A, NonPagedPool, '0GAT'> resource;
resource.reset(rawPointer);

Finally, I'll leave this here if you must choose to use new - but again I advise use of smart pointers instead. This is the way to achieve what you want using the library:

auto a = new (NonPagedPool, '0GAT') A();
jxy::default_delete<A, NonPagedPool, '0GAT'>()(a);

[wangzhankun]

Thanks for your help