topic Re: Free memory inside the enclave in Intel® Software Guard Extensions (Intel® SGX)

Free memory inside the enclave

DylanWang — Fri, 02 Jul 2021 22:36:29 GMT

Hi, Team.

I'm new to SGX.

I'm not that familiar with the memory management inside the enclave.

Since I use the C++11 feature (like unique_ptr) and class objects in my sample code, how should I free memory? For class objects, some other objects are embedded.

Sample code:

test.h

class{

private:

ClassA* ca;

unique_ptr<ClassB> cb;

unique_ptr<ClassC> cc;

}

test.cpp

ca = new ClassA*(...); // delete?

cb = make_unique<ClassB>(function(...));

cc = make_unique<ClassC>(function(...)); // Do I need to do something for this smart pointer?

Re: Free memory inside the enclave

JesusG_Intel — Tue, 06 Jul 2021 20:30:51 GMT

Hello DylanWang,

You can use delete to free up memory from the class and unique_ptrs just as you would in non-enclave code.

Refer to the SGX SDK Developer Reference Guide for your OS, section C++ Language Support, for more information.

Sincerely,

Jesus G.

Intel Customer Support

Re:Free memory inside the enclave

JesusG_Intel — Fri, 09 Jul 2021 21:25:13 GMT

This thread has been marked as answered and Intel will no longer monitor this thread. If you want a response from Intel in a follow-up question, please open a new thread.

Re: Free memory inside the enclave

DylanWang — Wed, 14 Jul 2021 22:40:11 GMT

Thanks for your reply! Got it.