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/* -*- linux-c -*-
*
* (C) Copright IBM Corp 2004-2006
*
* 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. This
* file and program are licensed under a BSD style license. See
* the Copying file included with the OpenHPI distribution for
* full licensing terms.
*
* Authors:
* Renier Morales <renier@users.sourceforge.net>
*/
#ifndef __OH_PLUGIN_H
#define __OH_PLUGIN_H
#include <glib.h>
#include <oh_handler.h>
/*
* Plugins are kept in a list within the oh_plugins struct
*/
struct oh_plugins {
GSList *list;
GStaticRecMutex lock;
};
struct oh_plugin {
char *name; /* Name of plugin preceded by 'lib' (e.g. "libdummy"). */
/* handle returned by lt_dlopenext or 0 for static plugins */
void *dl_handle;
struct oh_abi_v2 *abi; /* pointer to associated plugin interface */
int handler_count; /* How many handlers use this plugin */
/* Synchronization - used internally by plugin interfaces below. */
GStaticRecMutex lock; /* Exclusive lock for working with plugin */
/* These are used to keep the plugin from being unloaded while it
* is being referenced.
*/
int refcount;
GStaticRecMutex refcount_lock;
};
extern struct oh_plugins oh_plugins;
/*
* Representation of a handler (plugin instance)
*/
struct oh_handlers {
GHashTable *table;
GSList *list;
GStaticRecMutex lock;
};
struct oh_handler {
unsigned int id; /* id of handler */
char *plugin_name;
GHashTable *config; /* pointer to handler configuration */
struct oh_abi_v2 *abi; /* pointer to associated plugin interface */
/*
* private pointer used by plugin implementations to distinguish
* between different instances
*/
void *hnd;
/* Synchronization - used internally by handler interfaces below. */
GStaticRecMutex lock; /* Exclusive lock for working with handler */
/* These are used to keep the handler from being destroyed while it
* is being referenced.
*/
int refcount;
GStaticRecMutex refcount_lock;
};
extern struct oh_handlers oh_handlers;
/* Finalization of plugins and handlers. */
void oh_close_handlers(void);
/* Plugin interface functions */
struct oh_plugin *oh_get_plugin(char *plugin_name);
void oh_release_plugin(struct oh_plugin *plugin);
int oh_getnext_plugin_name(char *plugin_name,
char *next_plugin_name,
unsigned int size);
int oh_load_plugin(char *plugin_name);
int oh_unload_plugin(char *plugin_name);
/* Handler (plugin instances) interface functions */
struct oh_handler *oh_get_handler(unsigned int hid);
void oh_release_handler(struct oh_handler *handler);
int oh_getnext_handler_id(unsigned int hid, unsigned int *next_hid);
SaErrorT oh_create_handler(GHashTable *handler_config, unsigned int *hid);
int oh_destroy_handler(unsigned int hid);
SaErrorT oh_discovery(void);
/* Bind abi functions into plugin */
int oh_load_plugin_functions(struct oh_plugin *plugin, struct oh_abi_v2 **abi);
#endif /*__OH_PLUGIN_H*/
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