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/*
* zmq.h
*
* ZMQ data interface
*
* Copyright © 2017-2021 Deutsches Elektronen-Synchrotron DESY,
* a research centre of the Helmholtz Association.
*
* Authors:
* 2018-2021 Thomas White <taw@physics.org>
* 2014 Valerio Mariani
* 2017 Stijn de Graaf
*
* This file is part of CrystFEL.
*
* CrystFEL is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CrystFEL 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CrystFEL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef CRYSTFEL_ZMQ_H
#define CRYSTFEL_ZMQ_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#if defined(HAVE_ZMQ)
extern struct im_zmq *im_zmq_connect(const char *zmq_address,
char **subscriptions,
int n_subscriptions,
const char *zmq_request);
extern void im_zmq_shutdown(struct im_zmq *z);
extern void *im_zmq_fetch(struct im_zmq *z, size_t *pdata_size);
#else /* defined(HAVE_ZMQ) */
static UNUSED struct im_zmq *im_zmq_connect(const char *zmq_address,
char **zmq_subscriptions,
int n_subscriptions,
const char *zmq_request) { return NULL; }
static UNUSED void im_zmq_shutdown(struct im_zmq *z) { }
static UNUSED void *im_zmq_fetch(struct im_zmq *z, size_t *psize) { *psize = 0; return NULL; }
#endif /* defined(HAVE_ZMQ) */
#endif /* CRYSTFEL_ZMQ_H */
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