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authorDavid Robillard <d@drobilla.net>2006-06-10 01:52:02 +0000
committerDavid Robillard <d@drobilla.net>2006-06-10 01:52:02 +0000
commit98fe0e7056e6697396249531785d3899f94d79be (patch)
tree233319008d4bfb6c8bdc546bdf4a81b87ecf7f3a /src/engine/PluginLibrary.h
parent6c8eaee73b0ea66216744f49b452e22e26fe83e1 (diff)
downloadingen-98fe0e7056e6697396249531785d3899f94d79be.tar.gz
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More juggling
git-svn-id: http://svn.drobilla.net/lad/grauph@15 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/engine/PluginLibrary.h')
-rw-r--r--src/engine/PluginLibrary.h100
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diff --git a/src/engine/PluginLibrary.h b/src/engine/PluginLibrary.h
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--- a/src/engine/PluginLibrary.h
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@@ -1,100 +0,0 @@
-/* This file is part of Om. Copyright (C) 2006 Dave Robillard.
- *
- * Om is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at your option) any later
- * version.
- *
- * Om 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. See the GNU General Public License for details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#ifndef PLUGINLIBRARY_H
-#define PLUGINLIBRARY_H
-
-#include <dlfcn.h>
-#include <string>
-#include <iostream>
-using std::string;
-using std::cerr; using std::endl;
-
-
-namespace Om {
-
-
-/** Representation of a shared library containing at least one Plugin.
- *
- * In the NodeFactory, this represents one loaded shared library instance,
- * which is what handle() returns.
- */
-class PluginLibrary
-{
-public:
- /** Construct a new PluginLibrary.
- *
- * Path is assumed to be the path of a valid shared library that can be
- * successfully dlopen'ed.
- */
- PluginLibrary(const string& path)
- : m_path(path), m_handle(NULL)
- {}
-
- ~PluginLibrary()
- {
- close();
- }
-
- /** Load and resolve all symbols in this shared library
- * (dlopen with RTLD_NOW).
- *
- * It is okay to call this many times, the library will only be opened
- * once.
- */
- void open()
- {
- if (m_handle == NULL) {
- dlerror();
- m_handle = dlopen(m_path.c_str(), RTLD_NOW);
- if (m_handle == NULL)
- cerr << "[PluginLibrary] Warning: Error opening shared library "
- << m_path << "(" << dlerror() << ")" << endl;
- }
- }
-
- /** Close the dynamic library.
- *
- * This can be called on an already closed PluginLibrary without problems.
- */
- void close()
- {
- if (m_handle != NULL) {
- dlerror();
- if (dlclose(m_handle))
- cerr << "[PluginLibrary] Error closing shared library " << m_path
- << "(" << dlerror() << ")" << endl;
- }
- m_handle = NULL;
- }
-
- void* handle() const { return m_handle; }
-
-private:
- // Disallow copies (undefined)
- PluginLibrary(const PluginLibrary&);
- PluginLibrary& operator=(const PluginLibrary&);
-
- string m_path;
- void* m_handle;
-};
-
-
-} // namespace Om
-
-#endif // PLUGINLIBRARY_H
-