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VILLASnode/include/villas/hook.h

56 lines
1.7 KiB
C

/** Hook functions
*
* Every node or path can register hook functions which is called for every
* processed sample. This can be used to debug the data flow, get statistics
* or alter the sample contents.
*
* @file
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2014-2019, Institute for Automation of Complex Power Systems, EONERC
* @license GNU General Public License (version 3)
*
* VILLASnode
*
* This program 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
* any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @addtogroup hooks User-defined hook functions
* @ingroup path
* @{
*********************************************************************************/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
enum hook_flags {
HOOK_BUILTIN = (1 << 0), /**< Should we add this hook by default to every path?. */
HOOK_PATH = (1 << 1), /**< This hook type is used by paths. */
HOOK_NODE_READ = (1 << 2), /**< This hook type is used by nodes. */
HOOK_NODE_WRITE = (1 << 3) /**< This hook type is used by nodes. */
};
enum hook_reason {
HOOK_OK,
HOOK_ERROR,
HOOK_SKIP_SAMPLE,
HOOK_STOP_PROCESSING
};
#ifdef __cplusplus
}
#endif