Example of using backtrace functions

backtrace.txt

// Example of how to use GCC backtrace functions (in a plugin).

#include <cstdlib>

extern "C" int backtrace(void **frame_list, int size);
extern "C" char ** backtrace_symbols(void * const *frame_list, int size);

// ...

{
  TSDebug(PIName, "Stack Dump:");

  void *frame_list[200];
  int num_frames = backtrace(frame_list, 200);
  if (num_frames > 0) {
    char **names = backtrace_symbols(frame_list, num_frames);
    char **save_names = names;

    do {
      TSDebug(PIName, *(names++));
    } while (--num_frames);

    free(save_names);
  }
}

// https://www.gnu.org/software/libc/manual/html_node/Backtraces.html