Add back join of windows eventhandler threads

runtime/bin/eventhandler_win.h

 // Copyright (c) 2012, 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.
 
 #ifndef BIN_EVENTHANDLER_WIN_H_
 #define BIN_EVENTHANDLER_WIN_H_
 
 #if !defined(BIN_EVENTHANDLER_H_)
 #error Do not include eventhandler_win.h directly; use eventhandler.h instead.
 #endif
@@ skipping 245 matching lines @@
   HANDLE completion_port_;
   EventHandlerImplementation* event_handler_;
 
   OverlappedBuffer* data_ready_;  // Buffer for data ready to be read.
   OverlappedBuffer* pending_read_;  // Buffer for pending read.
   OverlappedBuffer* pending_write_;  // Buffer for pending write
 
   DWORD last_error_;
 
   ThreadId read_thread_id_;
+  HANDLE read_thread_handle_;
   bool read_thread_starting_;
   bool read_thread_finished_;
 
  private:
   void WaitForReadThreadStarted();
   void NotifyReadThreadStarted();
   void WaitForReadThreadFinished();
   void NotifyReadThreadFinished();
 
   int flags_;
@@ skipping 15 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(FileHandle);
 };
 
 
 class StdHandle : public FileHandle {
  public:
   explicit StdHandle(HANDLE handle)
       : FileHandle(handle),
         thread_id_(Thread::kInvalidThreadId),
+        thread_handle_(NULL),
         thread_wrote_(0),
         write_thread_exists_(false),
         write_thread_running_(false) {
     type_ = kStd;
   }
 
   virtual void DoClose();
   virtual intptr_t Write(const void* buffer, intptr_t num_bytes);
 
   void WriteSyncCompleteAsync();
   void RunWriteLoop();
 
  private:
   ThreadId thread_id_;
+  HANDLE thread_handle_;
   intptr_t thread_wrote_;
   bool write_thread_exists_;
   bool write_thread_running_;
 
   DISALLOW_COPY_AND_ASSIGN(StdHandle);
 };
 
 
 class DirectoryWatchHandle : public DescriptorInfoSingleMixin<Handle> {
  public:
@@ skipping 206 matching lines @@
                      OverlappedBuffer* buffer);
   void HandleIOCompletion(DWORD bytes, ULONG_PTR key, OVERLAPPED* overlapped);
 
   HANDLE completion_port() { return completion_port_; }
 
  private:
   ClientSocket* client_sockets_head_;
 
   Monitor* startup_monitor_;
   ThreadId handler_thread_id_;
+  HANDLE handler_thread_handle_;
 
   TimeoutQueue timeout_queue_;  // Time for next timeout.
   bool shutdown_;
   HANDLE completion_port_;
 
   DISALLOW_COPY_AND_ASSIGN(EventHandlerImplementation);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_EVENTHANDLER_WIN_H_