用于编写调试日志的ace log_msg.cpp库文件中的访问冲突错误

时间:2017-06-20 10:09:03

标签: c++ nullpointerexception access-violation corba ace

我有一个项目使用CORBA / ACE进行两个分布式模块之间的连接,当我将我的解决方案从MSVS2008转移到MSVS2015时,我在每次使用 ACE_DEBUG 函数时遇到了访问冲突错误项目的时候,当我按照代码时,我发现空指针错误出现在这部分代码之前:

if (tracing)
    this->start_tracing ();

这是在Log_Msg.cpp中,它是ace库的文件。以下是错误在其中生成的函数:

    ssize_t
ACE_Log_Msg::log (ACE_Log_Record &log_record,
                  int suppress_stderr)
{
  ssize_t result = 0;

  // Format the message and print it to stderr and/or ship it off to
  // the log_client daemon, and/or print it to the ostream.  Of
  // course, only print the message if "SILENT" mode is disabled.
  if (ACE_BIT_DISABLED (ACE_Log_Msg::flags_,
                        ACE_Log_Msg::SILENT))
    {
      bool tracing = this->tracing_enabled ();
      this->stop_tracing ();

#if !defined (ACE_WIN32)
      // Make this block signal-safe.
      ACE_Log_Msg_Sig_Guard sb;
#endif /* !ACE_WIN32 */

      // Do the callback, if needed, before acquiring the lock
      // to avoid holding the lock during the callback so we don't
      // have deadlock if the callback uses the logger.
      if (ACE_BIT_ENABLED (ACE_Log_Msg::flags_,
                           ACE_Log_Msg::MSG_CALLBACK)
          && this->msg_callback () != 0)
        this->msg_callback ()->log (log_record);

      // Make sure that the lock is held during all this.
      ACE_MT (ACE_GUARD_RETURN (ACE_Recursive_Thread_Mutex, ace_mon,
                                *ACE_Log_Msg_Manager::get_lock (),
                                -1));

      if (ACE_BIT_ENABLED (ACE_Log_Msg::flags_,
                           ACE_Log_Msg::STDERR)
          && !suppress_stderr) // This is taken care of by our caller.
        log_record.print (ACE_Log_Msg::local_host_,
                          ACE_Log_Msg::flags_,
                          stderr);

      if (ACE_BIT_ENABLED (ACE_Log_Msg::flags_, ACE_Log_Msg::CUSTOM) ||
          ACE_BIT_ENABLED (ACE_Log_Msg::flags_, ACE_Log_Msg::SYSLOG) ||
          ACE_BIT_ENABLED (ACE_Log_Msg::flags_, ACE_Log_Msg::LOGGER))
        {
          // Be sure that there is a message_queue_, with multiple threads.
          ACE_MT (ACE_Log_Msg_Manager::init_backend ());
        }


      if (ACE_BIT_ENABLED (ACE_Log_Msg::flags_, ACE_Log_Msg::LOGGER) ||
          ACE_BIT_ENABLED (ACE_Log_Msg::flags_, ACE_Log_Msg::SYSLOG))
        {
          result =
            ACE_Log_Msg_Manager::log_backend_->log (log_record);
        }

      if (ACE_BIT_ENABLED (ACE_Log_Msg::flags_, ACE_Log_Msg::CUSTOM) &&
          ACE_Log_Msg_Manager::custom_backend_ != 0)
        {
          result =
            ACE_Log_Msg_Manager::custom_backend_->log (log_record);
        }

      // This must come last, after the other two print operations
      // (see the <ACE_Log_Record::print> method for details).
      if (ACE_BIT_ENABLED (ACE_Log_Msg::flags_,
                           ACE_Log_Msg::OSTREAM)
          && this->msg_ostream () != 0)
        log_record.print (ACE_Log_Msg::local_host_,
                          ACE_Log_Msg::flags_,
#if defined (ACE_LACKS_IOSTREAM_TOTALLY)
                          static_cast<FILE *> (this->msg_ostream ())
#else  /* ! ACE_LACKS_IOSTREAM_TOTALLY */
                          *this->msg_ostream ()
#endif /* ! ACE_LACKS_IOSTREAM_TOTALLY */
                          );

      if (tracing)
        this->start_tracing ();
   }

  return result;
}

我使用了__try / __除了和其他异常处理程序,但我无法解决它。我在MSVS2008中没有这样的错误。也许我应该设置一些设置或添加新文件,但我不知道它是什么。

请帮帮我:(

1 个答案:

答案 0 :(得分:0)

您必须初始化ACE库。当你有一个常规的main()时,我们有一些宏来做这件事。可能你有一些特殊的主要内容,尝试在开始时调用ACE::init();,最后调用ACE::fini();。请参阅ACE_wrappers/tests/ACE_Init_Test.cpp

此外,您还必须使用Visual Studio 2015编译器编译ACE / TAO。也许直接升级到Visual Studio 2017,ACE / TAO 6.4.3 / 2.4.3支持该编译器。