Function check_rc

tests/DCPS/MultiTopic/MultiTopicTest.cpp:309–319

const Duration_t max_wait = {10, 0};

void check_rc(ReturnCode_t ret, const char* message, const char* extra_message = 0)
{
  if (ret != RETCODE_OK) {
    std::string msg = std::string("Failed to ") + message;
    if (extra_message) {
      msg += std::string(" ") + extra_message;
    }
    msg += std::string(": ") + retcode_to_string(ret);
    throw std::runtime_error(msg);
  }
}

void waitForMatch(const DataWriter_var& dw, int count = 1)
{