Added Socket::SetBlocking() and Socket::SetNonBlocking().

runtime/bin/socket_win.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_WINDOWS)
 
 #include "bin/builtin.h"
 #include "bin/eventhandler.h"
 #include "bin/file.h"
@@ skipping 270 matching lines @@
   ListenSocket* listen_socket = new ListenSocket(s);
   return reinterpret_cast<intptr_t>(listen_socket);
 }
 
 
 void Socket::Close(intptr_t fd) {
   ClientSocket* client_socket = reinterpret_cast<ClientSocket*>(fd);
   client_socket->Close();
 }
 
+
+static bool SetBlockingHelper(intptr_t fd, bool blocking) {
+  SocketHandle* handle = reinterpret_cast<SocketHandle*>(fd);
+  u_long iMode = blocking ? 0 : 1;
+  int status = ioctlsocket(handle->socket(), FIONBIO, &iMode);
+  if (status != NO_ERROR) {
+    Log::PrintErr("ioctlsocket FIONBIO failed: %d\n", status);
+    return false;
+  }
+  return true;
+}
+
+
+bool Socket::SetNonBlocking(intptr_t fd) {
+  return SetBlockingHelper(fd, false);
+}
+
+
+bool Socket::SetBlocking(intptr_t fd) {
+  return SetBlockingHelper(fd, true);
+}
+
 #endif  // defined(TARGET_OS_WINDOWS)