Make Mac-port non-blocking.

runtime/bin/socket_macos.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.
 
 #if !defined(DART_IO_DISABLED)
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_MACOS)
 
 #include "bin/socket.h"
@@ skipping 81 matching lines @@
     return fd;
   }
 
   intptr_t result = TEMP_FAILURE_RETRY(
       bind(fd, &source_addr.addr, SocketAddress::GetAddrLength(source_addr)));
   if ((result != 0) && (errno != EINPROGRESS)) {
     VOID_TEMP_FAILURE_RETRY(close(fd));
     return -1;
   }
 
+  FDUtils::SetNonBlocking(fd);

[Søren Gjesse, 2016/08/04 06:35:49]

I think moving it to Create would be better - then it is only needed once. This
is what is done in the Linux version, where the OS create support a flag for
making the socket non-blocking.

[floitsch, 2016/08/04 12:17:07]

Done.

+
   return Connect(fd, addr);
 }
 
 
 intptr_t Socket::Available(intptr_t fd) {
   return FDUtils::AvailableBytes(fd);
 }
 
 
 intptr_t Socket::Read(intptr_t fd, void* buffer, intptr_t num_bytes) {
@@ skipping 513 matching lines @@
                             int interfaceIndex) {
   return JoinOrLeaveMulticast(fd, addr, interface, interfaceIndex, false);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)
 
 #endif  // !defined(DART_IO_DISABLED)