private void ThrowException()
{
if (m_Dll == null)
{
return;
}
SysErrNo managedErrNo;
string sysDescription;
try {
// These methods were first added in libnserial 1.1
managedErrNo = m_Dll.netfx_errno(m_Dll.errno);
sysDescription = m_Dll.netfx_errstring(m_Dll.errno);
} catch (System.EntryPointNotFoundException) {
#if NETSTANDARD15
ThrowExceptionNetStandard();
#else
ThrowExceptionMono();
#endif
throw;
}
string libDescription = m_Dll.serial_error(m_Handle);
string description = string.Format("{0} ({1}; {2})",
libDescription, m_Dll.errno, sysDescription);
switch (managedErrNo)
{
case SysErrNo.NETFX_OK:
case SysErrNo.NETFX_EINTR:
case SysErrNo.NETFX_EAGAIN:
case SysErrNo.NETFX_EWOULDBLOCK:
// We throw here in any case, as the methods that call ThrowException don't
// expect it to return. This would mean something that needs to be debugged
// and fixed (probably in the C Interop Code).
throw new InternalApplicationException(description);
case SysErrNo.NETFX_EINVAL:
throw new ArgumentException(description);
case SysErrNo.NETFX_EACCES:
throw new UnauthorizedAccessException(description);
case SysErrNo.NETFX_ENOMEM:
throw new OutOfMemoryException(description);
case SysErrNo.NETFX_EBADF:
throw new InvalidOperationException(description);
case SysErrNo.NETFX_ENOSYS:
throw new PlatformNotSupportedException(description);
case SysErrNo.NETFX_EIO:
throw new IOException(description);
default:
throw new InvalidOperationException(description);
}
}
public UnixNativeSerial()
{
m_Dll = new SerialUnix();
m_Handle = m_Dll.serial_init();
if (m_Handle.IsInvalid) {
throw new PlatformNotSupportedException("Can't initialise platform library");
}
m_HandlePtr = m_Handle.DangerousGetHandle();
#if NETSTANDARD15
// On NetStandard 1.5, we must have proper exception handling
try {
// These methods were first added in libnserial 1.1
m_Dll.netfx_errno(0);
} catch (System.EntryPointNotFoundException) {
throw new PlatformNotSupportedException("Must have libnserial 1.1.0 or later on .NET Standard 1.5");
}
#endif
}