SystemCall.h

Go to the documentation of this file.

// SystemCall.h -- macro definitions for socket system calls to through formated exceptions

#ifndef SYSTEMCALL_H_
#define SYSTEMCALL_H_

#include <sstream>
#include "NetworkEx.h"


// Microsoft Windows specific information

#ifdef WIN32

#define socket_error (WSAGetLastError())

#else

#define socket_error ( errno )

#endif // WIN32


// Macros to format messages and parameters from functions
// made to operating system calls

#define NET_FORMAT_CONCATENATE(ARG) \
  "                " << (ARG) << ", // " << #ARG << "\n"

#define NET_FORMAT_END(ARG) \
  "                " << (ARG) << "  // " << #ARG

#define FORMAT_2(ARG1,ARG2) \
  "\n                (\n" << NET_FORMAT_CONCATENATE(ARG1) << NET_FORMAT_END(ARG2) \
   << "\n                )"

#define FORMAT_3(ARG1,ARG2,ARG3) \
  "\n                (\n" << NET_FORMAT_CONCATENATE(ARG1) << NET_FORMAT_CONCATENATE(ARG2) \
   << NET_FORMAT_END(ARG3) << "\n                )"

#define FORMAT_5(ARG1,ARG2,ARG3,ARG4,ARG5) \
  "\n                (\n" << NET_FORMAT_CONCATENATE(ARG1) << NET_FORMAT_CONCATENATE(ARG2) \
  << NET_FORMAT_CONCATENATE(ARG3) << NET_FORMAT_CONCATENATE(ARG4) << NET_FORMAT_END(ARG5) \
  << "\n                )"

#define FORMAT_6(ARG1,ARG2,ARG3,ARG4,ARG5,ARG6) \
  "\n                (\n" << NET_FORMAT_CONCATENATE(ARG1) << NET_FORMAT_CONCATENATE(ARG2) \
  << NET_FORMAT_CONCATENATE(ARG3) << NET_FORMAT_CONCATENATE(ARG4) << NET_FORMAT_CONCATENATE(ARG5) \
  << NET_FORMAT_END(ARG6) << "\n                )"

#define THROW_FORMATTED_ERROR(CODE,NOTE) \
{ \
        std::ostringstream stream; \
        stream << NetworkException::getErrorSymbol(NetworkException::system_call_failure) \
                   << ": " << NOTE << " [" << __FILE__ << ':' << __LINE__ << "]" << std::ends; \
        throw NetworkException(NetworkException::system_call_failure,stream.str().c_str(),CODE ); \
}

// Macros for to format messages from operating system socket errors

#define SOCKET_CALL_2(PREFIX,FUNC,ARG1,ARG2) \
{ \
        if ((PREFIX FUNC (ARG1,ARG2)) == -1) \
                THROW_FORMATTED_ERROR(socket_error, #FUNC << FORMAT_2(ARG1,ARG2) ) \
}

#define SOCKET_CALL_3(PREFIX,FUNC,ARG1,ARG2,ARG3) \
{ \
        if ((PREFIX FUNC (ARG1,ARG2,ARG3)) == -1) \
                THROW_FORMATTED_ERROR(socket_error, #FUNC << FORMAT_3(ARG1,ARG2,ARG3) ) \
}

#define SOCKET_CALL_5(PREFIX,FUNC,ARG1,ARG2,ARG3,ARG4,ARG5) \
{ \
        if ((PREFIX FUNC (ARG1,ARG2,ARG3,ARG4,ARG5)) == -1) \
                THROW_FORMATTED_ERROR(socket_error, #FUNC << FORMAT_5(ARG1,ARG2,ARG3,ARG4,ARG5) ) \
}

#define SOCKET_CALL_6(PREFIX,FUNC,ARG1,ARG2,ARG3,ARG4,ARG5,ARG6) \
{ \
        if ((PREFIX FUNC (ARG1,ARG2,ARG3,ARG4,ARG5,ARG6)) == -1) \
                THROW_FORMATTED_ERROR(socket_error, #FUNC << FORMAT_6(ARG1,ARG2,ARG3,ARG4,ARG5,ARG6) ) \
}


#endif // SYSTEMCALL_H_

---