mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
72e627b327
The functions now look like this int node_read(struct node *n, struct sample *smps[], unsigned cnt, unsigned *release); int node_write(struct node *n, struct sample *smps[], unsigned cnt, unsigned *release); This commit enables nodes to control how many samples will be released by the framework through *release
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/** Node-type for shared memory communication.
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*
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* @file
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* @author Georg Martin Reinke <georg.reinke@rwth-aachen.de>
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* @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASnode
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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/**
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* @ingroup node
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* @addtogroup shmem_node Shared memory node type
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* @{
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*/
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#pragma once
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#include <villas/node.h>
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#include <villas/memory.h>
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#include <villas/pool.h>
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#include <villas/queue.h>
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#include <villas/config.h>
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#include <villas/shmem.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Node-type for shared memory communication.
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* @see node_type
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*/
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struct shmem {
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const char* out_name; /**< Name of the shm object for the output queue. */
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const char* in_name; /**< Name of the shm object for the input queue. */
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struct shmem_conf conf; /**< Interface configuration struct. */
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char **exec; /**< External program to execute on start. */
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struct shmem_int intf; /**< Shmem interface */
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};
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/** @see node_type::print */
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char * shmem_print(struct node *n);
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/** @see node_type::parse */
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int shmem_parse(struct node *n, json_t *cfg);
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/** @see node_type::start */
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int shmem_start(struct node *n);
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/** @see node_type::stop */
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int shmem_stop(struct node *n);
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/** @see node_type::read */
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int shmem_read(struct node *n, struct sample *smps[], unsigned cnt, unsigned *release);
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/** @see node_type::write */
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int shmem_write(struct node *n, struct sample *smps[], unsigned cnt, unsigned *release);
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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