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diff --git a/src/thread.hpp b/src/thread.hpp
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+/*
+    Copyright (c) 2007-2010 iMatix Corporation
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __ZMQ_THREAD_HPP_INCLUDED__
+#define __ZMQ_THREAD_HPP_INCLUDED__
+
+#include "platform.hpp"
+
+#ifdef ZMQ_HAVE_WINDOWS
+#include "windows.hpp"
+#else
+#include <pthread.h>
+#endif
+
+namespace zmq
+{
+
+    typedef void (thread_fn) (void*);
+
+    //  Class encapsulating OS thread. Thread initiation/termination is done
+    //  using special functions rather than in constructor/destructor so that
+    //  thread isn't created during object construction by accident, causing
+    //  newly created thread to access half-initialised object. Same applies
+    //  to the destruction process: Thread should be terminated before object
+    //  destruction begins, otherwise it can access half-destructed object.
+
+    class thread_t
+    {
+    public:
+
+        inline thread_t ()
+        {
+        }
+
+        //  Creates OS thread. 'tfn' is main thread function. It'll be passed
+        //  'arg' as an argument.
+        void start (thread_fn *tfn_, void *arg_);
+
+        //  Waits for thread termination.
+        void stop ();
+
+#ifdef ZMQ_HAVE_WINDOWS
+        typedef DWORD id_t;
+#else
+        typedef pthread_t id_t;
+#endif
+
+        static id_t id ();
+        static bool equal (id_t id1_, id_t id2_);
+        
+    private:
+
+#ifdef ZMQ_HAVE_WINDOWS
+        static unsigned int __stdcall thread_routine (void *arg_);
+        HANDLE descriptor;
+#else
+        static void *thread_routine (void *arg_);
+        pthread_t descriptor;
+#endif
+
+        thread_fn *tfn;
+        void *arg;
+
+        thread_t (const thread_t&);
+        void operator = (const thread_t&);
+    };
+
+}
+
+#endif