1 files changed, 276 insertions, 0 deletions
diff --git a/cpp/zmq.hpp b/cpp/zmq.hpp
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+++ b/cpp/zmq.hpp
@@ -0,0 +1,276 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    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_HPP_INCLUDED__
+#define __ZMQ_HPP_INCLUDED__
+
+#include "zmq.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <exception>
+
+namespace zmq
+{
+
+    typedef zmq_free_fn free_fn;
+
+    enum message_type_t
+    {
+        message_data = 1 << 0,
+        message_gap = 1 << ZMQ_GAP,
+        message_delimiter = 1 << ZMQ_DELIMITER
+    };
+
+    //  The class masquerades POSIX-style errno error as a C++ exception.
+    class error_t : public std::exception
+    {
+    public:
+
+        error_t () : errnum (errno) {}
+
+        virtual const char *what () const throw ()
+        {
+            return strerror (errnum);
+        }
+
+    private:
+
+        int errnum;
+    };
+
+    //  A message. Caution: Don't change the body of the message once you've
+    //  copied it - the behaviour is undefined. Don't change the body of the
+    //  received message either - other threads may be accessing it in parallel.
+
+    class message_t : private zmq_msg_t
+    {
+        friend class socket_t;
+
+    public:
+
+        //  Creates message size_ bytes long.
+        inline message_t (size_t size_ = 0)
+        {
+            int rc = zmq_msg_init_size (this, size_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        //  Creates message from the supplied buffer. 0MQ takes care of
+        //  deallocating the buffer once it is not needed. The deallocation
+        //  function is supplied in ffn_ parameter. If ffn_ is NULL, no
+        //  deallocation happens - this is useful for sending static buffers.
+        inline message_t (void *data_, size_t size_, 
+            free_fn *ffn_)
+        {
+            int rc = zmq_msg_init_data (this, data_, size_, ffn_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        //  Destroys the message.
+        inline ~message_t ()
+        {
+            int rc = zmq_msg_close (this);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        //  Destroys old content of the message and allocates buffer for the
+        //  new message body. Having this as a separate function allows user
+        //  to reuse once-allocated message for multiple times.
+        inline void rebuild (size_t size_)
+        {
+            int rc = zmq_msg_close (this);
+            if (rc != 0)
+                throw error_t ();
+            rc = zmq_msg_init_size (this, size_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        //  Same as above, however, the message is rebuilt from the supplied
+        //  buffer. See appropriate constructor for discussion of buffer
+        //  deallocation mechanism.
+        inline void rebuild (void *data_, size_t size_, free_fn *ffn_)
+        {
+            int rc = zmq_msg_close (this);
+            if (rc != 0)
+                throw error_t ();
+            rc = zmq_msg_init_data (this, data_, size_, ffn_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        //  Moves the message content from one message to the another. If the
+        //  destination message have contained data prior to the operation
+        //  these get deallocated. The source message will contain 0 bytes
+        //  of data after the operation.
+        inline void move_to (message_t *msg_)
+        {
+            int rc = zmq_msg_move (this, (zmq_msg_t*) msg_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        //  Copies the message content from one message to the another. If the
+        //  destination message have contained data prior to the operation
+        //  these get deallocated.
+        inline void copy_to (message_t *msg_)
+        {
+            int rc = zmq_msg_copy (this, (zmq_msg_t*) msg_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        //  Returns message type.
+        inline message_type_t type ()
+        {
+            return (message_type_t) (1 << zmq_msg_type (this));
+        }
+
+        //  Returns pointer to message's data buffer.
+        inline void *data ()
+        {
+            return zmq_msg_data (this);
+        }
+
+        //  Returns the size of message data buffer.
+        inline size_t size ()
+        {
+            return zmq_msg_size (this);
+        }
+
+    private:
+
+        //  Disable implicit message copying, so that users won't use shared
+        //  messages (less efficient) without being aware of the fact.
+        message_t (const message_t&);
+        void operator = (const message_t&);
+    };
+
+    class context_t
+    {
+        friend class socket_t;
+
+    public:
+
+        inline context_t (int app_threads_, int io_threads_)
+        {
+            ptr = zmq_init (app_threads_, io_threads_);
+            if (ptr == NULL)
+                throw error_t ();
+        }
+
+        inline ~context_t ()
+        {
+            int rc = zmq_term (ptr);
+            assert (rc == 0);
+        }
+
+    private:
+
+        void *ptr;
+
+        //  Disable copying.
+        context_t (const context_t&);
+        void operator = (const context_t&);
+    };
+
+    class socket_t
+    {
+    public:
+
+        inline socket_t (context_t &context_, int type_ = 0)
+        {
+            ptr = zmq_socket (context_.ptr, type_);
+            if (ptr == NULL)
+                throw error_t ();
+        }
+
+        inline ~socket_t ()
+        {
+            int rc = zmq_close (ptr);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        inline void setsockopt (int option_, const void *optval_,
+            size_t optvallen_)
+        {
+            int rc = zmq_setsockopt (ptr, option_, optval_, optvallen_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        inline void bind (const char *addr_)
+        {
+            int rc = zmq_bind (ptr, addr_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        inline void connect (const char *addr_)
+        {
+            int rc = zmq_connect (ptr, addr_);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        inline bool send (message_t &msg_, int flags_ = 0)
+        {
+            int rc = zmq_send (ptr, &msg_, flags_);
+            if (rc == 0)
+                return true;
+            if (rc == -1 && errno == EAGAIN)
+                return false;
+            throw error_t ();
+        }
+
+        inline void flush ()
+        {
+            int rc = zmq_flush (ptr);
+            if (rc != 0)
+                throw error_t ();
+        }
+
+        inline bool recv (message_t *msg_, int flags_ = 0)
+        {
+            int rc = zmq_recv (ptr, msg_, flags_);
+            if (rc == 0)
+                return true;
+            if (rc == -1 && errno == EAGAIN)
+                return false;
+            throw error_t ();
+        }
+
+    private:
+
+        void *ptr;
+
+        //  Disable copying.
+        socket_t (const socket_t&);
+        void operator = (const socket_t&);
+    };
+
+}
+
+#endif