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Diffstat (limited to 'include/zmq.hpp')
| -rw-r--r-- | include/zmq.hpp | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/include/zmq.hpp b/include/zmq.hpp new file mode 100644 index 0000000..86ffff6 --- /dev/null +++ b/include/zmq.hpp @@ -0,0 +1,274 @@ +/* + 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_HPP_INCLUDED__ +#define __ZMQ_HPP_INCLUDED__ + +#include "zmq.h" + +#include <assert.h> +#include <string.h> +#include <exception> + +namespace zmq +{ + + typedef zmq_free_fn free_fn; + typedef zmq_pollitem_t pollitem_t; + + class error_t : public std::exception + { + public: + + error_t () : errnum (zmq_errno ()) {} + + virtual const char *what () const throw () + { + return zmq_strerror (errnum); + } + + private: + + int errnum; + }; + + inline int poll (zmq_pollitem_t *items_, int nitems_, long timeout_ = -1) + { + int rc = zmq_poll (items_, nitems_, timeout_); + if (rc < 0) + throw error_t (); + return rc; + } + + inline void device (int device_, void * insocket_, void* outsocket_) + { + int rc = zmq_device (device_, insocket_, outsocket_); + if (rc != 0) + throw error_t (); + } + + class message_t : private zmq_msg_t + { + friend class socket_t; + + public: + + inline message_t () + { + int rc = zmq_msg_init (this); + if (rc != 0) + throw error_t (); + } + + inline message_t (size_t size_) + { + int rc = zmq_msg_init_size (this, size_); + if (rc != 0) + throw error_t (); + } + + inline message_t (void *data_, size_t size_, free_fn *ffn_, + void *hint_ = NULL) + { + int rc = zmq_msg_init_data (this, data_, size_, ffn_, hint_); + if (rc != 0) + throw error_t (); + } + + inline ~message_t () + { + int rc = zmq_msg_close (this); + if (rc != 0) + throw error_t (); + } + + inline void rebuild () + { + int rc = zmq_msg_close (this); + if (rc != 0) + throw error_t (); + rc = zmq_msg_init (this); + if (rc != 0) + throw error_t (); + } + + 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 (); + } + + inline void rebuild (void *data_, size_t size_, free_fn *ffn_, + void *hint_ = NULL) + { + int rc = zmq_msg_close (this); + if (rc != 0) + throw error_t (); + rc = zmq_msg_init_data (this, data_, size_, ffn_, hint_); + if (rc != 0) + throw error_t (); + } + + inline void move (message_t *msg_) + { + int rc = zmq_msg_move (this, (zmq_msg_t*) msg_); + if (rc != 0) + throw error_t (); + } + + inline void copy (message_t *msg_) + { + int rc = zmq_msg_copy (this, (zmq_msg_t*) msg_); + if (rc != 0) + throw error_t (); + } + + inline void *data () + { + return zmq_msg_data (this); + } + + 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 io_threads_) + { + ptr = zmq_init (io_threads_); + if (ptr == NULL) + throw error_t (); + } + + inline ~context_t () + { + int rc = zmq_term (ptr); + assert (rc == 0); + } + + private: + + void *ptr; + + context_t (const context_t&); + void operator = (const context_t&); + }; + + class socket_t + { + public: + + inline socket_t (context_t &context_, int type_) + { + 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 operator void* () + { + return ptr; + } + + 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 getsockopt (int option_, void *optval_, + size_t *optvallen_) + { + int rc = zmq_getsockopt (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 && zmq_errno () == EAGAIN) + return false; + 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 && zmq_errno () == EAGAIN) + return false; + throw error_t (); + } + + private: + + void *ptr; + + socket_t (const socket_t&); + void operator = (const socket_t&); + }; + +} + +#endif |