How to set a breakpoint when using a lot of RAM?

Question

C++ / C#

The program sometimes starts to take a lot of memory from the heap for a short period of time (200 megabytes for 1 second). Can I somehow stop the program on the malloc that allocates, for example, the 200th megabyte of memory

Answer 1

Custom allocators and/or condition breaks.

Answer 2

In general, if the program has a need to monitor its memory allocation, then a custom allocator is written and used in the program.
Those. you write your malloc and free with blackjack and other functionality you need - if you don't want to give more than 200MB per second - don't give it, if you don't want to allocate more than 1GB - don't allocate, etc.