Reuse thread when writing stdout/stderr on Windows.

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 180 matching lines @@
       handle = GetStdHandle(STD_OUTPUT_HANDLE);
       break;
     case 2:
       handle = GetStdHandle(STD_ERROR_HANDLE);
       break;
     default: UNREACHABLE();
   }
   if (handle == INVALID_HANDLE_VALUE) {
     return -1;
   }
-  FileHandle* file_handle = new FileHandle(handle);
-  if (file_handle == NULL) return -1;
-  file_handle->MarkDoesNotSupportOverlappedIO();
-  file_handle->EnsureInitialized(EventHandler::delegate());
-  return reinterpret_cast<intptr_t>(file_handle);
+  StdHandle* std_handle = new StdHandle(handle);
+  if (std_handle == NULL) return -1;
+  std_handle->MarkDoesNotSupportOverlappedIO();
+  std_handle->EnsureInitialized(EventHandler::delegate());
+  return reinterpret_cast<intptr_t>(std_handle);
 }
 
 
 intptr_t ServerSocket::Accept(intptr_t fd) {
   ListenSocket* listen_socket = reinterpret_cast<ListenSocket*>(fd);
   ClientSocket* client_socket = listen_socket->Accept();
   if (client_socket != NULL) {
     return reinterpret_cast<intptr_t>(client_socket);
   } else {
     return -1;
@@ skipping 223 matching lines @@
                     IPPROTO_TCP,
                     TCP_NODELAY,
                     reinterpret_cast<char *>(&on),
                     sizeof(on)) == 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)