mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-16 00:00:02 +01:00
111 lines
2.5 KiB
C++
111 lines
2.5 KiB
C++
/** Path restart hook.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2019, 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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/** @addtogroup hooks Hook functions
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* @{
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*/
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#include <inttypes.h>
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#include <villas/hook.hpp>
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#include <villas/node.h>
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#include <villas/sample.h>
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namespace villas {
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namespace node {
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class RestartHook : public Hook {
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protected:
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sample *prev;
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public:
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using Hook::Hook;
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virtual void start()
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{
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assert(state == STATE_PREPARED);
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prev = nullptr;
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state = STATE_STARTED;
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}
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virtual void stop()
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{
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assert(state == STATE_STARTED);
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if (prev)
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sample_decref(prev);
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state = STATE_STOPPED;
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}
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virtual int process(sample *smp)
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{
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assert(state == STATE_STARTED);
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if (prev) {
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/* A wrap around of the sequence no should not be treated as a simulation restart */
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if (smp->sequence == 0 && prev->sequence != 0 && prev->sequence < UINT64_MAX - 16) {
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logger->warn("Simulation from node {} restarted (previous->sequence={}, current->sequence={})",
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node_name(node), prev->sequence, smp->sequence);
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smp->flags |= SAMPLE_IS_FIRST;
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/* Restart hooks */
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for (size_t i = 0; i < vlist_length(&node->in.hooks); i++) {
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Hook *k = (Hook *) vlist_at(&node->in.hooks, i);
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k->restart();
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}
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for (size_t i = 0; i < vlist_length(&node->out.hooks); i++) {
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Hook *k = (Hook *) vlist_at(&node->out.hooks, i);
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k->restart();
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}
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}
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}
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sample_incref(smp);
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if (prev)
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sample_decref(prev);
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prev = smp;
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return HOOK_OK;
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}
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};
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/* Register hook */
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static HookPlugin<RestartHook> p(
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"restart",
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"Call restart hooks for current node",
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HOOK_BUILTIN | HOOK_NODE_READ,
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1
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);
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} /* namespace node */
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} /* namespace villas */
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/** @} */
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