Linux系统中C/C++程序的动态分配峰值memory用法

Question

I would like to know the peak dynamicly allocated memory usage (have already canceled the released memory usage) after running a C/C++ program.

1 (Initial question):

Given a C/C++ program a.out . Can any tool report the peak dynamically allocated memory usage in a way like:

>$ peak-memory ./a.out  
Peak dynamically allocated memory size: 12345678 Bytes

2 (Alternative question):

Can I insert a snippit code in the source program such that every time it is executed, it will report the current heap memory usage where I want. This looks like:

int main(){
    int *a = (int*) malloc(12);
    // some code...
    print_heap_usage();
    // other code...
}

My research:

I know I can use a wrapper function such as my_malloc and my_free that track the allocated and released memory. But it is not a practical option for other's source code when too many lines of code need to be modified. And prohibitively, this wrapper function can't handle the situation when new and delete are used.

There is one related question Get peak amount of memory used by a C program . But it's only about Windows system and doesn't specifically care about heap memory usage. Some answers indicated the using of getrusage . However, I googled and found it clearly can't tell the heap usage.

Answer 1

Either

Statistics for Memory Allocation with malloc

or

malloc_stats

Note : check the CONFORMING TO sections.

Another gimmick (in terminal):

• cat /proc/meminfo
• free (from procps package, uses /proc/meminfo, see https://gitlab.com/procps-ng/procps/-/blob/master/proc/sysinfo.c line 698 in function meminfo )