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https://git.rwth-aachen.de/acs/public/villas/node/
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83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
/** Loadable / plugin support.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2016, Institute for Automation of Complex Power Systems, EONERC
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* This file is part of VILLASnode. All Rights Reserved. Proprietary and confidential.
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* Unauthorized copying of this file, via any medium is strictly prohibited.
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*********************************************************************************/
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#include "plugin.h"
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int plugin_init(struct plugin *p, char *name, char *path)
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{
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p->name = strdup(name);
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p->path = strdup(path);
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p->state = PLUGIN_STATE_UNLOADED;
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}
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int plugin_load(struct plugin *p)
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{
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p->handle = dlopen(p->path, RTLD_NOW);
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if (!p->path)
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return -1;
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p->state = PLUGIN_STATE_LOADED;
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return 0;
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}
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int plugin_unload(struct plugin *p)
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{
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int ret;
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if (p->state != PLUGIN_STATE_LOADED)
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return -1;
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ret = dlclose(p->handle);
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if (ret)
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return -1;
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p->state = UNLOADED;
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return 0;
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}
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int plugin_destroy(struct plugin *p)
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{
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if (p->state == PLUGIN_STATE_LOADED)
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plugin_unload(p);
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free(p->name);
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free(p->path);
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}
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int plugin_parse(struct plugin *p, config_setting_t *lcs)
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{
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const char *path;
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path = config_setting_get_string(cfg);
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if (!path)
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cerror(cfg, "Setting 'plugin' must be a string.");
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p->
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handle = dlopen(path, RTLD_NOW);
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if (!handle)
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error("Failed to load plugin %s", dlerror());
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list_push_back(&cfg->plugins, handle);
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}
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return 0;
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}
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struct plugin * plugin_lookup(char *name, enum plugin_types type)
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{
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list_foreach(struct plugin *l, &plugins) {
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if (l->type == type && strcmp(l->name, name) == 0)
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return l
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}
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return NULL;
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}
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