C++ boost测试和异步IO:地址内存访问冲突:错误地址无映射
我正在尝试为tcpip的异步i/O设置一个boost测试 发送tcp消息的我的函数:C++ boost测试和异步IO:地址内存访问冲突:错误地址无映射,c++,linux,boost-asio,boost-test,C++,Linux,Boost Asio,Boost Test,我正在尝试为tcpip的异步i/O设置一个boost测试 发送tcp消息的我的函数: int TcpClient::sendMsgToServer(string msg) { if (isConnected == true) { Logger::debug("Asynch send request for msg: " + msg, __LINE__, __FILE__); sendSequence++;
int TcpClient::sendMsgToServer(string msg) {
if (isConnected == true) {
Logger::debug("Asynch send request for msg: " + msg, __LINE__,
__FILE__);
sendSequence++;
msg.append("\r\n");
int length = msg.length() + 2; //+2 is for \r\n
char* buffer = (char*) msg.c_str();
Logger::debug(buffer, __LINE__, __FILE__);
m_Socket.async_send(boost::asio::buffer(buffer, length),
boost::bind(&fingigcc::TcpClient::sendMsgToServerErrorHandler,
this, boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
std::string sentMsg = "Sent Msg: " + msg;
Logger::debug(sentMsg, __LINE__, __FILE__);
return 0;
} else {
return -1;
}
}
void TcpClient::sendMsgToServerErrorHandler(
const boost::system::error_code& error, std::size_t bytes_transferred) {
Logger::debug("Sending complete: ", __LINE__, __FILE__);
sendResponseSequence++;
int i = error.value();
std::stringstream ss;
ss.clear();
ss << i;
Logger::debug("RESULTCODE: " + ss.str(), __LINE__, __FILE__);
if (i == 0) {
Logger::debug("RESULT: " + error.message(), __LINE__, __FILE__);
} else {
Logger::crit(error.message(), __LINE__, __FILE__);
m_Socket.close();
isConnected = false;
connectionStateChanged(isConnected);
}
}
在测试这些异步函数时,有什么我应该注意的吗
我的构建信息是:
Platform: linux
Compiler: GNU C++ version 4.7.2
STL : GNU libstdc++ version 20120920
Boost : 1.49.0
编辑: 我也尝试过以以下方式修改它..但仍然得到相同的错误:
int TcpClient::sendMsgToServer(string msg) {
if (isConnected == true) {
Logger::debug("Asynch send request for msg: " + msg, __LINE__,
__FILE__);
sendSequence++;
msg.append("\r\n");
char *buffer = new char[msg.size() + 1];
buffer[msg.size()] = 0;
memcpy(buffer, msg.c_str(), msg.size());
Logger::debug(buffer, __LINE__, __FILE__);
m_Socket.async_send(boost::asio::buffer(buffer, (msg.size() + 1)),
boost::bind(&fingigcc::TcpClient::sendMsgToServerErrorHandler,
this, boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
std::string sentMsg = "Sent Msg: " + msg;
Logger::debug(sentMsg, __LINE__, __FILE__);
return 0;
} else {
return -1;
}
}
m\u Socket.async\u send(boost::asio::buffer(buffer,length)
--但是msg
对象是本地的,它的c\u str()
结果在msg
超出范围后无效!因此您实际上向异步操作传递了一个临时缓冲区。缓冲区不会超过此操作,因此segfault是不可避免的。CommunicationRefixture的默认构造函数是否确保其c
成员指向有效对象?是的。事实上,我应该提到,如果我删除以下部分:m_Socket.async_send(boost::asio::buffer(buffer,length),boost::bind(&fingigcc::TcpClient::sendMsgToServerErrorHandler,this,boost::asio::placeholders::error,boost::asio::placeholders::bytes\u transfer));它运行没有问题。根据你的建议编辑了它。不确定我做得是否正确。但仍然得到相同的结果error@Shrouk哈桑·汗:现在看来是对的。如果你仍然遇到车祸,可能是另一次(但类似)放置。此外,检查TcpClient
实例是否比异步操作更有效。事实上,您是正确的。错误来自于在函数(此处未提及)中初始化boost::线程,该函数的有效期不足以传递给sendMsgToServer。
Platform: linux
Compiler: GNU C++ version 4.7.2
STL : GNU libstdc++ version 20120920
Boost : 1.49.0
int TcpClient::sendMsgToServer(string msg) {
if (isConnected == true) {
Logger::debug("Asynch send request for msg: " + msg, __LINE__,
__FILE__);
sendSequence++;
msg.append("\r\n");
char *buffer = new char[msg.size() + 1];
buffer[msg.size()] = 0;
memcpy(buffer, msg.c_str(), msg.size());
Logger::debug(buffer, __LINE__, __FILE__);
m_Socket.async_send(boost::asio::buffer(buffer, (msg.size() + 1)),
boost::bind(&fingigcc::TcpClient::sendMsgToServerErrorHandler,
this, boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
std::string sentMsg = "Sent Msg: " + msg;
Logger::debug(sentMsg, __LINE__, __FILE__);
return 0;
} else {
return -1;
}
}