Added nonblocking flag check on create file in windows impl.

Author: Patrick Dwyer

src/jtermios/windows/JTermiosImpl.java

@@ -137,7 +137,11 @@ public void open(String filename, int flags) throws Fail {
 						if (!filename.startsWith("\\\\"))
 							filename = "\\\\.\\" + filename;
 
-						m_Comm = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, 0, null, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, null);
+						int openFlags = FILE_ATTRIBUTE_NORMAL;
+						if (((m_OpenFlags & O_NONBLOCK) != 0) || ((m_OpenFlags & O_NDELAY) != 0)) {
+							openFlags = FILE_FLAG_OVERLAPPED;
+						}
+						m_Comm = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, 0, null, OPEN_EXISTING, openFlags, null);
 
 						if (INVALID_HANDLE_VALUE == m_Comm) {
 							if (GetLastError() == ERROR_FILE_NOT_FOUND)
@@ -224,7 +228,7 @@ public void close() {
 
 					if (m_WriteCancelObject != null && m_WriteCancelObject != NULL && m_WriteCancelObject != INVALID_HANDLE_VALUE)
 						CloseHandle(m_WriteCancelObject);
-					m_ReadCancelObject = null;
+					m_WriteCancelObject = null;
 				}
 
 				if (WaitCommEventCancelObject != null)

src/jtermios/windows/WinAPI.java

@@ -309,6 +309,7 @@ public interface Windows_kernel32_lib extends StdCallLibrary {
 	public static final int SETBREAK = 8;
 	public static final int CLRBREAK = 9;
 
+	public static final int FILE_ATTRIBUTE_NORMAL = 0x00000080;
 	public static final int FILE_FLAG_WRITE_THROUGH = 0x80000000;
 	public static final int FILE_FLAG_OVERLAPPED = 0x40000000;
 	public static final int FILE_FLAG_NO_BUFFERING = 0x20000000;