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95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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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
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* as published by the Free Software Foundation; either version 2
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* of the 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef BACKENDS_PLUGINS_ELF_PROVIDER_H
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#define BACKENDS_PLUGINS_ELF_PROVIDER_H
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#include "common/scummsys.h"
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#if defined(DYNAMIC_MODULES) && defined(USE_ELF_LOADER)
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#include "backends/plugins/elf/elf-loader.h"
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#include "common/fs.h"
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/**
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* ELFPlugin
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*
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* Objects of this class are returned when the PluginManager calls
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* getPlugins() on an ELFPluginProvider. An intermediary class for
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* dealing with plugin files, ELFPlugin is responsible for creating/destroying
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* a DLObject that handles the opening/loading/unloading of the plugin file whose
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* path in the target backend's file system is "_filename".
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*/
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class ELFPlugin : public DynamicPlugin {
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protected:
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typedef const char *(*CharFunc)();
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DLObject *_dlHandle;
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void *_dso_handle;
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virtual VoidFunc findSymbol(const char *symbol);
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public:
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ELFPlugin(const Common::String &filename) :
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DynamicPlugin(filename),
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_dlHandle(0),
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_dso_handle(0) {
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}
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virtual ~ELFPlugin() {
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if (_dlHandle)
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unloadPlugin();
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}
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virtual DLObject *makeDLObject() = 0;
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virtual bool loadPlugin();
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virtual void unloadPlugin();
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void trackSize();
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};
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template<class T>
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class TemplatedELFPlugin : public ELFPlugin {
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public:
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TemplatedELFPlugin(const Common::String &filename) :
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ELFPlugin(filename) {
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}
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virtual DLObject *makeDLObject() {
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return new T();
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}
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};
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class ELFPluginProvider : public FilePluginProvider {
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protected:
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virtual Plugin *createPlugin(const Common::FSNode &node) const = 0;
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virtual PluginList getPlugins();
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bool isPluginFilename(const Common::FSNode &node) const;
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};
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#endif // defined(DYNAMIC_MODULES) && defined(USE_ELF_LOADER)
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#endif /* BACKENDS_PLUGINS_ELF_PROVIDER_H */
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