#include <unistd.h>#include <fstream>#include <iostream>#include <string>
#include "bcc_version.h"#include "BPF.h"//detach_kprobe
const std::string BPF_PROGRAM = R"(int my_tcp_send(struct pt_regs *ctx) {    bpf_trace_printk("my_tcp_send hook !\n");  return 0;})";

int main() {  ebpf::BPF bpf;  auto init_res = bpf.init(BPF_PROGRAM);  if (!init_res.ok()) {    std::cerr << init_res.msg() << std::endl;    return 1;  }
  std::ifstream pipe("/sys/kernel/debug/tracing/trace_pipe");  std::string line;     std::cout << "Starting HelloWorld with BCC " << LIBBCC_VERSION << std::endl;   auto attach_res = bpf.attach_kprobe("tcp_sendmsg", "my_tcp_send");  if (!attach_res.ok()) {    std::cerr << attach_res.msg() << std::endl;    return 1;  }
  while (true) {    if (std::getline(pipe, line)) {      std::cout << line << std::endl;      // Detach the probe if we got at least one line.      // auto detach_res = bpf.detach_kprobe(clone_fnname);      // if (!detach_res.ok()) {      //   std::cerr << detach_res.msg() << std::endl;      //   return 1;      // }      // break;    } else {      std::cout << "Waiting for a sys_clone event" << std::endl;      sleep(1);    }  }
  return 0;}