7c2415838b
* fix configure.ac to check for dlopen, introduce $(LUMIERA_PLUGIN_LIBS) * Generic pluginloader finished, all plugins get loaded and registered at start for now, it is prepared for on-demand loading and unloading but not implemented because that needs the plugindb. - plugin unloading not yet finished, this asserts at the end
104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/*
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plugin.h - Plugin loader
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Copyright (C) Lumiera.org
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2008, Christian Thaeter <ct@pipapo.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef LUMIERA_PLUGIN_H
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#define LUMIERA_PLUGIN_H
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#include "lib/psplay.h"
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#include "lib/error.h"
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#include "backend/interface.h"
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#include <stdlib.h>
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#include <nobug.h>
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/**
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* @file
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* Lumiera plugins defines 'interfaces' as shown in interface.h, the plugin system handles the loading
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* of all kinds of plugins under the hood, invoked from the interface system. Anything defined here is
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* called internally and should not be used by other parts of the application.
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*/
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LUMIERA_ERROR_DECLARE(PLUGIN_INIT);
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LUMIERA_ERROR_DECLARE(PLUGIN_DLOPEN);
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LUMIERA_ERROR_DECLARE(PLUGIN_WTF);
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LUMIERA_ERROR_DECLARE(PLUGIN_REGISTER);
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LUMIERA_ERROR_DECLARE(PLUGIN_VERSION);
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NOBUG_DECLARE_FLAG (plugin);
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/* tool macros*/
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struct lumiera_plugin_struct;
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typedef struct lumiera_plugin_struct lumiera_plugin;
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typedef lumiera_plugin* LumieraPlugin;
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enum lumiera_plugin_type;
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int
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lumiera_plugin_cmp_fn (const void* keya, const void* keyb);
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const void*
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lumiera_plugin_key_fn (const PSplaynode node);
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LumieraPlugin
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lumiera_plugin_new (const char* name);
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LumieraPlugin
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lumiera_plugin_init (LumieraPlugin self, void* handle, LumieraInterface plugin);
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LumieraPlugin
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lumiera_plugin_load (const char* plugin);
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int
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lumiera_plugin_register (LumieraPlugin);
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/**
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* discover new plugins
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* traverses the configured plugin paths and calls the callback_load function for any plugin
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* not actually loaded. If callback_load returns a plugin (and not NULL) then this is feed to
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* the callback_register function.
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*/
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int
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lumiera_plugin_discover (LumieraPlugin (*callback_load)(const char* plugin),
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int (*callback_register) (LumieraPlugin));
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/**
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* Tries to unload a plugin.
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* When the Plugin is unused, then all resources associated with it are freed and it will be removed from memory
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* @param plugin name of the plugin to be unloaded.
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* @return 0 on success, else the number if users which keeping the plugin loaded
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*/
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int
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lumiera_plugin_unload (const char* plugin);
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#endif /* LUMIERA_PLUGIN_H */
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