Gotcha Example

cali_gotcha.cpp

ssize_t (*orig_read)(int fildes, void *buf, size_t nbyte);
ssize_t read_wrapper(int fildes, void* buf, size_t nbyte){
  cali::Annotation("bytes_read").set(nbyte);
  return orig_read(fildes, buf, nbyte);
}

struct gotcha_binding_t wrap_actions[] = {
     { "read", read_wrapper, &orig_read }
};
void init_bytecounter_tool(){
   gotcha_wrap(wrap_actions, 1, "cali_bytecounter_tool");
}