Can I insert checkpoints in a function, including any function it calls?

help
1

Can I insert checkpoints in a function, including any function it calls?

This looks like it has to be supported by the compiler, right?

fn check(){
   let useage = stacker.useage();
    print("stack usage {}",useage);
}

#[check_point(check())]
fn  A(){
     B();
}

fn B(){
C();
}

fn C(){

}

fn main(){
///  The check function is called back every time a function call occurs
   A(); 
/// will  print   stack usage 30,  stack usage 90,  stack usage 90
}

so i can check The current stack capacity

2

Where is this attribute coming from? It's not entirely clear what you're asking.

3

this attribute Is assuming

4

This cannot be supported, since some function called by the annotated one can be in other compilation units (or even in the external libraries).

5

The remaining stack space is currently available even if an external library is called. However, this function requires compiler support

6

I mean, it's impossible to instrument the function which is already compiled by something else.

7

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