Re: Systemtap Probe C++ new and delete Operator

[Felix Lu <flu at redhat dot com>]

----- Original Message -----
> From: "Andy Librian" <andy.librian@kmklabs.com>
> To: systemtap@sourceware.org
> Sent: Wednesday, 3 August, 2016 11:05:33 PM
> Subject: Systemtap Probe C++ new and delete Operator
> 
> Hi,
> 
> I'm curious if Systemtap can probe C++ new and delete operator. Maybe like:

This can be done like this if you have dwarf debugging info installed:

test.cpp:
int main(int argc, char** argv) {
  int* x = new int[256];
  int* y = new int;
  delete[] x;
  int* z = new int;
  delete y;
  return 0;
}

$ g++ test.cpp
$ stap -e 'probe process("a.out").library("libstdc++.so.6").{function("operator new"), function("operator delete")} {println(ppfunc())}'
operator new
operator new
operator delete
operator new
operator delete

You can take a look at man stapprobes for more information.

> 
> probe process(PATH).function("__1c2n6FI_pv_") {
> }
> 
> I'm trying to find the source of memory leak using this approach:
> 
> https://blogs.oracle.com/openomics/entry/investigating_memory_leaks_with_dtrace
> 
> 
> Regards,
> 
> Andy Librian.
> KMK Online.
> 

- Felix