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VILLASnode/include/villas/plugin.h

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C

/** Loadable / plugin support.
*
* @file
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
*********************************************************************************/
#pragma once
#include "hook.h"
#include "api.h"
#include "common.h"
#include "utils.h"
#include "fpga/ip.h"
#include "nodes/cbuilder.h"
#define REGISTER_PLUGIN(p) \
__attribute__((constructor)) static void UNIQUE(__ctor)() { \
list_push(&plugins, p); \
} \
__attribute__((destructor)) static void UNIQUE(__dtor)() { \
list_remove(&plugins, p); \
}
extern struct list plugins;
enum plugin_type {
PLUGIN_TYPE_HOOK,
PLUGIN_TYPE_NODE,
PLUGIN_TYPE_API,
PLUGIN_TYPE_FPGA_IP,
PLUGIN_TYPE_MODEL_CBUILDER
};
struct plugin {
char *name;
char *description;
void *handle;
char *path;
enum plugin_type type;
enum state state;
int (*load)(struct plugin *p);
int (*unload)(struct plugin *p);
union {
struct api_ressource api;
struct node_type node;
struct fpga_ip_type ip;
struct hook_type hook;
struct cbuilder_model cb;
};
};
/** Return a pointer to the plugin structure */
#define plugin(vt) ((struct plugin *) ((char *) (vt) - offsetof(struct plugin, api)))
#define plugin_name(vt) plugin(vt)->name
#define plugin_description(vt) plugin(vt)->description
int plugin_init(struct plugin *p);
int plugin_destroy(struct plugin *p);
int plugin_parse(struct plugin *p, config_setting_t *cfg);
int plugin_load(struct plugin *p);
int plugin_unload(struct plugin *p);
void plugin_dump(enum plugin_type type);
/** Find registered and loaded plugin with given name and type. */
struct plugin * plugin_lookup(enum plugin_type type, const char *name);