关于linux:Linux中获取当前进程的绝对路径

通过readlink的形式获取。

bool GetExePath(std::string &path){  std::string exe_path(PATH_MAX, std::string::value_type());  auto exe_path_len = readlink("/proc/self/exe", &exe_path[0], exe_path.size());  if (exe_path_len < 0) {      std::cerr << "readlink failed!, exe_path_len < 0"<< std::endl;      return false;  } else if (static_cast<size_t>(exe_path_len) >= exe_path.size()) {      std::cerr << "readlink failed!, exe_path_len >= exe_path.size()"<< std::endl;      return false;  }  exe_path.resize(exe_path_len);  auto pos = exe_path.rfind('/');  if (pos == std::string::npos) {      std::cerr << "exe_path.rfind fail!, exe_path.rfind = npos"<< std::endl;      return false;  }  path = exe_path.substr(0, pos);  return true;}